Hisao Ogata - Academia.edu (original) (raw)

Papers by Hisao Ogata

Modern Plastic Surgery, 2013

Complete surgical excision of venous malformations (VMs) is frequently complicated by massive ble... more Complete surgical excision of venous malformations (VMs) is frequently complicated by massive bleeding and nerve damage, particularly in the cervicofacial area. This report describes a novel technique for the resection of cervicofacial VMs using the LigaSure TM (Valleylab, Tyco International Healthcare, Boulder, CO) vessel sealing system. We report three cases of VM excision using this vessel sealing system, and recorded intraoperative and postoperative blood loss, operative time, and postoperative complications. In all cases employing the Ligasure TM , perioperative blood loss was less than 600 ml, no patients developed postoperative hematomas or other bleeding complications, and no patients developed a facial palsy even if the VM was located close to the facial nerve. LigaSure TM provides excellent hemostasis with few complications when used for cervicofacial VMs.

Journal of Cranio Maxillo Facial Surgery Official Publication of the European Association For Cranio Maxillo Facial Surgery, Dec 1, 2010

We treat hemifacial microsomia with a combination of surgery and orthodontic treatment during the... more We treat hemifacial microsomia with a combination of surgery and orthodontic treatment during the growth period, resulting in early improvement in facial asymmetry and the induction of normal growth. We previously used gradual distraction of the mandibular ramus for Pruzansky's type II classification (Pruzansky, 1969). In type II cases, the maxilla should also be treated actively as, using this technique, improvement of the occlusal plane is difficult to achieve, resulting in a cross bite and difficulties in post-operative orthodontic treatment-especially in older patients. Morphologically, the mandibular angle region of the operative side is flat, and the angle of the mouth remains elevated. We performed mandibular-driven simultaneous maxillo-mandibular distraction while the occlusion was maintained using intermaxillary anchorage. However, mandibular-driven distraction tended to elongate the face because the mandible only elongated downwards and the mandibular ramus did not reach the glenoid. Furthermore, external distraction devices produce significant distress for patients until removal of the device and cause scars on the face. We developed a new internal distraction device with a variable angle and performed maxillary-driven simultaneous maxillo-mandibular distraction using this device. The result was morphologically satisfactory and solved the above problems. Because the patient was in the growth period, careful follow-up and induction to normal growth were important while the inferior growth of the affected side was monitored.

Cleft Palate Craniofac J, 2010

... 2007;50:1187–1192. Natsume N, Tsukawaki T, Kuno J, Kurita K, Kawai T. Survey of patients with... more ... 2007;50:1187–1192. Natsume N, Tsukawaki T, Kuno J, Kurita K, Kawai T. Survey of patients with oblique facial clefts in Japan. Int J Oral Maxillofac Surg. 1999;28:53–55. Sasaki K, Togashi S, Harasumi T, Endo T, Nakayama Y. Rare craniofacial cleft: three cases. J Jpn PRS. ...

Plastic and Reconstructive Surgery, Jun 1, 2008

The present study was performed to quantitatively analyze the three-dimensional morphology of the... more The present study was performed to quantitatively analyze the three-dimensional morphology of the nasal septa of patients with alveolar and alveolopalatal clefts. Twenty-five unilateral complete cleft lip patients with alveolar clefts only (alveolar cleft group) and 35 unilateral complete cleft lip patients with alveolar and palatal clefts (alveolar and palatal cleft group) were included in the study. Although no patient in either group had undergone alveoloplasty, all patients had undergone palatoplasty. The degree of nasal septum deviation was studied for each patient at three different depths along the anteroposterior axis using three-dimensional computed tomographic data; the data were compared between the two groups to elucidate whether the difference in cleft type affects the morphologic patterns of the nasal septum. The nasal septa of the alveolar and palatal cleft group patients presented more uneven morphologic patterns than those of the alveolar cleft group patients. In the alveolar cleft group, the nasal septa did not present significantly different degrees of deviation at their anterior and posterior parts. In the alveolar and palatal cleft group, however, the posterior parts of the nasal septa presented greater deviation than the anterior parts. In the alveolar and palatal cleft group, furthermore, a significant correlation was observed between the severity of the cleft and the degree of the nasal septum deviation. The nasal septa present different three-dimensional morphologic patterns between the patients with alveolar clefts only and those with alveolopalatal clefts. This difference should be considered when performing surgical treatments for these patients.

Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons, 2004

Platelets containing a number of growth factors (platelet-derived growth factor [PDGF], transform... more Platelets containing a number of growth factors (platelet-derived growth factor [PDGF], transforming growth factor-beta [TGF-beta], etc) can be obtained in high concentrations through centrifugal separation and are used in clinical applications as platelet-rich plasma (PRP). However, only a few studies have been conducted on the growth factors present in PRP. In this study, we focused on the concentrations of growth factors in PRP and clarified the influence of using antiplatelet substances in the process of platelet concentration to improve the concentration rate of growth factors in PRP. We made platelet pellets from whole blood obtained from humans with or without some antiplatelet substances (prostaglandin E1, aspirin, apyrase). Platelet pellets were resuspended in phosphate-buffered saline as platelet resuspensions. We measured PDGF and TGF-beta1 concentrations in the samples. In measurements, we had the samples treated to release growth factors from platelets to measure accura...

Lecture Notes in Computer Science, 2009

Detection of a hand holding a cellular phone was developed to recognize whether someone is using ... more Detection of a hand holding a cellular phone was developed to recognize whether someone is using a cellular phone while operating an automated teller machine (ATM). The purpose is to prevent money transfer fraud. Since a victim is told a bogus reason to transfer money and how to operate the machine through a cellular phone, detecting a working cellular phone

ABSTRACT This paper presents a new type ATM called image-ATM and an image workflow system develop... more ABSTRACT This paper presents a new type ATM called image-ATM and an image workflow system developed for banking applications. The system including the image-ATM captures the paper forms brought by the clients at the very front-end, identifies the type of forms, and recognizes the data on the form automatically. The image-ATM can accept over 400 different kinds of forms. The system is presently in operation at some of the Japanese major banks. They could reduce considerable human workforce for their branch offices by introducing the image workflow system and by centralizing the back-office work at a few operation centers. Technically, form recognition, especially form type identification, was one of the keys for this success. This paper discusses a method for form type identification and its technical issues.

A method for street number matching in Japanese address recognition is presented. This method use... more A method for street number matching in Japanese address recognition is presented. This method uses the knowledge about the number expression formats, which is represented by the expression patterns of street numbers. The expression patterns are composed of character class symbols which represent numerals and delimiter characters. By matching the expression patterns against the character candidates in the lattice which is the result of character recognition, the class symbol lattice is generated. In the class symbol lattice, the numeral and delimiter character candidates are replaced by the corresponding class symbol. An experiment using 6,136 expression patterns showed that 93% of street numbers on the test mail-pieces were correctly recognized

Journal of Craniofacial Surgery, 2015

Simulated craniomaxillofacial surgery is critical for planning the procedure, shortening operativ... more Simulated craniomaxillofacial surgery is critical for planning the procedure, shortening operative time, and practicing the procedure. However, typical models are expensive, given their solid materials, and the surgical sensations do not accurately reflect the procedure performed using human bone. To solve these problems, a new solid salt model has been developed. Stereolithography data was generated using computed tomography data, and a salt model was created using a 3D inkjet printer. By extracting specific data for elements such as the teeth and mandibular canal, these elements were highlighted in the solid model using different colored material. Also, we compared the maximum load and plastic deformation of the salt model, a stereolithographic resin model, and a pig limb. The salt model had similar tenacity to bone, and the risk of damage to the teeth and inferior alveolar nerve was easily confirmed. The material cost of the salt model is extremely low, and the salt model may provide a more accurate sensation of cutting human bone. Thus, this model is useful for both simulated operation and practice for inexperienced surgeons.

Clinical ophthalmology (Auckland, N.Z.), 2014

Currently, only a few reports have recommended surgery as a suitable treatment for blepharoptosis... more Currently, only a few reports have recommended surgery as a suitable treatment for blepharoptosis associated with myasthenia gravis. The present study aims to introduce our surgical criteria, surgical options, outcomes, and precautions for medically refractory myasthenic blepharoptosis. Eight patients who failed to respond to at least 2 years of medical treatment and who underwent blepharoptosis surgery, from January 2008 to December 2011, were enrolled in this study. Medical records, photographs, and questionnaire results regarding postoperative status were evaluated. Of the eleven procedures performed, four involved frontal suspension, four involved external levator advancement, one involved nonincisional transconjunctival levator advancement, and two involved subbrow blepharoplasty with orbicularis oculi muscle tucking. The margin reflex distance improved postoperatively in seven patients. Seven patients had very minimal scarring, and one had minimal scarring. Five patients showe...

Scandinavian journal of plastic and reconstructive surgery and hand surgery / Nordisk plastikkirurgisk forening [and] Nordisk klubb for handkirurgi, 2009

For the repair of syndactyly of the foot, skin grafting is often used to close the skin defect, b... more For the repair of syndactyly of the foot, skin grafting is often used to close the skin defect, but open treatment is not common. However, with grafting, an additional scar at the donor site and patchwork-like scar at the recipient site are inevitable. Our aim was to describe the process of epithelialisation and define the indications for open treatment of syndactyly of the foot. The open treatment was used on 16 webs. The texture of epithelialised surface resembled volar skin; the visible scar was mainly at the dorsal edge; and web creep occurred predominantly on the volar side and resembled the natural slope of the commissure. Open treatment is better than skin grafting because of better match of texture without a patchwork-like scar, and it is indicated in cases of simple incomplete syndactyly of the foot that extends proximal to the distal interphalangeal joint.

Plastic and reconstructive surgery, 2007

As the nasal platform, the piriform margin is considered the most important nasal structure. An i... more As the nasal platform, the piriform margin is considered the most important nasal structure. An insufficient bony structure has been suggested to be the major factor in secondary nasal deformities such as the "depressed alar base." It is unclear, however, how the piriform margin is depressed or how bony depression influences nasal shape. Using cone beam computed tomography, the anteroposterior positions of the cleft-side piriform margin and alar base were compared with those of the noncleft side in 52 postoperative unilateral cleft lip patients with no alveolar bone graft. Patients were divided based on cleft type into either the unilateral cleft lip, alveolus, and palate group or the unilateral cleft lip and alveolus group. In all cases, the cleft-side piriform margin was depressed. The anteroposterior position of the alar base was related to the piriform depression in both groups. However, in contrast with bony depression, the cleft-side alar base was located more anteri...

Plastic Surgery: An International Journal, 2013

Annals of Maxillofacial Surgery, 2013

The goals of treatment for hemifacial microsomia include horizontalization of occlusal plane and ... more The goals of treatment for hemifacial microsomia include horizontalization of occlusal plane and acquisition of facial symmetry. Although horizontalization of occlusal plane can be easily achieved, facial symmetry, particularly in relation to mandibular contour, can be difficult to attain. Soft tissue is generally reconstructed to correct facial asymmetry, and no studies have described correction of facial asymmetry through skeletal reconstruction. A 12-year-old girl presented with grade IIb right-sided hemifacial microsomia. She was treated using Nakajima's angle-variable internal distraction (NAVID) system for mandibular body distraction. Following treatment, appropriate facial symmetry was achieved, and the patient was extremely satisfied with the results. Thus, we successfully treated the present patient by our novel method involving distraction osteogenesis. This method was effective and useful for several reasons including; the changes were not accompanied by postoperative tissue absorption, donor sites were not involved, and the treatment outcome could be reevaluated by adjusting distraction while the patient's appearance was being remodeled.

International Journal of Pediatric Otorhinolaryngology, 2013

To evaluate the effect of diagnostic and operative time on velopharyngeal closure in submucosal c... more To evaluate the effect of diagnostic and operative time on velopharyngeal closure in submucosal cleft palate (SMCP). SMCP patients treated at the Keio University School of Medicine from 1986 to 2011 were enrolled as subjects. Clinical data were obtained, including patient sex, age at diagnosis, and operative age, occasion of diagnosis, accompanying deformities, speech test results before and 6 months after palatoplasty, and pharyngeal flap usage after palatoplasty. Data were available for 16 patients, with a mean diagnostic age of 51.1 months (range: 0-132 months). The clinical presentations were bifid uvula in 4 patients and speech dysfunction in 11. The cases suspected from bifid uvula were diagnosed significantly earlier than those with speech dysfunction (19.5 versus 56.8 months, p<0.01). Velopharyngeal closure was improved in 6 cases, and the average age of these patients at surgery was significantly lower than that of the other patients (46.7 versus 79.8 months, p<0.05). A pharyngeal flap was performed in 7 cases (43.8%). The pharyngeal flap usage rate in cleft palate patients other than those with SMCP was significantly lower than that of SMCP patients (3.5% versus 43.8%, p<0.01). Early discovery and surgical correction is vital for improving postoperative speech outcomes in SMCP patients. This requires educating physicians about SMCP and future studies regarding simple and effective SMCP screening methods.

Document Recognition and Retrieval X, 2003

ABSTRACT This paper presents a new type ATM called image-ATM and an image workflow system develop... more ABSTRACT This paper presents a new type ATM called image-ATM and an image workflow system developed for banking applications. The system including the image-ATM captures the paper forms brought by the clients at the very front-end, identifies the type of forms, and recognizes the data on the form automatically. The image-ATM can accept over 400 different kinds of forms. The system is presently in operation at some of the Japanese major banks. They could reduce considerable human workforce for their branch offices by introducing the image workflow system and by centralizing the back-office work at a few operation centers. Technically, form recognition, especially form type identification, was one of the keys for this success. This paper discusses a method for form type identification and its technical issues.

Journal of plastic surgery and hand surgery, 2013

The present study aims to elucidate the relationship between preoperative deviation patterns of f... more The present study aims to elucidate the relationship between preoperative deviation patterns of fractured zygomas and treatment outcomes. Forty-five randomly selected patients with tri-pod type zygoma fractures were classified into a medial rotation group and a lateral rotation group, depending on preoperative deviation patterns. A minimum of 6 months after the operation, symmetry of the cheek was evaluated by three plastic surgeons using a VAS system. The evaluated scores were compared between the two groups. Furthermore, simulation of postoperative secondary deformity was performed by applying hypothetically defined relapse forces on CAD models produced by referring to the CT data of 20 patients. The deviation values obtained by the simulation were compared between the two groups. The results demonstrate that VAS scores were higher for the lateral rotation group than for the medial rotation group and that the deviation values were higher for the medial rotation group than for the ...

Modern Plastic Surgery, 2013

Complete surgical excision of venous malformations (VMs) is frequently complicated by massive ble... more Complete surgical excision of venous malformations (VMs) is frequently complicated by massive bleeding and nerve damage, particularly in the cervicofacial area. This report describes a novel technique for the resection of cervicofacial VMs using the LigaSure TM (Valleylab, Tyco International Healthcare, Boulder, CO) vessel sealing system. We report three cases of VM excision using this vessel sealing system, and recorded intraoperative and postoperative blood loss, operative time, and postoperative complications. In all cases employing the Ligasure TM , perioperative blood loss was less than 600 ml, no patients developed postoperative hematomas or other bleeding complications, and no patients developed a facial palsy even if the VM was located close to the facial nerve. LigaSure TM provides excellent hemostasis with few complications when used for cervicofacial VMs.

Journal of Cranio Maxillo Facial Surgery Official Publication of the European Association For Cranio Maxillo Facial Surgery, Dec 1, 2010

We treat hemifacial microsomia with a combination of surgery and orthodontic treatment during the... more We treat hemifacial microsomia with a combination of surgery and orthodontic treatment during the growth period, resulting in early improvement in facial asymmetry and the induction of normal growth. We previously used gradual distraction of the mandibular ramus for Pruzansky's type II classification (Pruzansky, 1969). In type II cases, the maxilla should also be treated actively as, using this technique, improvement of the occlusal plane is difficult to achieve, resulting in a cross bite and difficulties in post-operative orthodontic treatment-especially in older patients. Morphologically, the mandibular angle region of the operative side is flat, and the angle of the mouth remains elevated. We performed mandibular-driven simultaneous maxillo-mandibular distraction while the occlusion was maintained using intermaxillary anchorage. However, mandibular-driven distraction tended to elongate the face because the mandible only elongated downwards and the mandibular ramus did not reach the glenoid. Furthermore, external distraction devices produce significant distress for patients until removal of the device and cause scars on the face. We developed a new internal distraction device with a variable angle and performed maxillary-driven simultaneous maxillo-mandibular distraction using this device. The result was morphologically satisfactory and solved the above problems. Because the patient was in the growth period, careful follow-up and induction to normal growth were important while the inferior growth of the affected side was monitored.

Cleft Palate Craniofac J, 2010

... 2007;50:1187–1192. Natsume N, Tsukawaki T, Kuno J, Kurita K, Kawai T. Survey of patients with... more ... 2007;50:1187–1192. Natsume N, Tsukawaki T, Kuno J, Kurita K, Kawai T. Survey of patients with oblique facial clefts in Japan. Int J Oral Maxillofac Surg. 1999;28:53–55. Sasaki K, Togashi S, Harasumi T, Endo T, Nakayama Y. Rare craniofacial cleft: three cases. J Jpn PRS. ...

Plastic and Reconstructive Surgery, Jun 1, 2008

The present study was performed to quantitatively analyze the three-dimensional morphology of the... more The present study was performed to quantitatively analyze the three-dimensional morphology of the nasal septa of patients with alveolar and alveolopalatal clefts. Twenty-five unilateral complete cleft lip patients with alveolar clefts only (alveolar cleft group) and 35 unilateral complete cleft lip patients with alveolar and palatal clefts (alveolar and palatal cleft group) were included in the study. Although no patient in either group had undergone alveoloplasty, all patients had undergone palatoplasty. The degree of nasal septum deviation was studied for each patient at three different depths along the anteroposterior axis using three-dimensional computed tomographic data; the data were compared between the two groups to elucidate whether the difference in cleft type affects the morphologic patterns of the nasal septum. The nasal septa of the alveolar and palatal cleft group patients presented more uneven morphologic patterns than those of the alveolar cleft group patients. In the alveolar cleft group, the nasal septa did not present significantly different degrees of deviation at their anterior and posterior parts. In the alveolar and palatal cleft group, however, the posterior parts of the nasal septa presented greater deviation than the anterior parts. In the alveolar and palatal cleft group, furthermore, a significant correlation was observed between the severity of the cleft and the degree of the nasal septum deviation. The nasal septa present different three-dimensional morphologic patterns between the patients with alveolar clefts only and those with alveolopalatal clefts. This difference should be considered when performing surgical treatments for these patients.

Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons, 2004

Platelets containing a number of growth factors (platelet-derived growth factor [PDGF], transform... more Platelets containing a number of growth factors (platelet-derived growth factor [PDGF], transforming growth factor-beta [TGF-beta], etc) can be obtained in high concentrations through centrifugal separation and are used in clinical applications as platelet-rich plasma (PRP). However, only a few studies have been conducted on the growth factors present in PRP. In this study, we focused on the concentrations of growth factors in PRP and clarified the influence of using antiplatelet substances in the process of platelet concentration to improve the concentration rate of growth factors in PRP. We made platelet pellets from whole blood obtained from humans with or without some antiplatelet substances (prostaglandin E1, aspirin, apyrase). Platelet pellets were resuspended in phosphate-buffered saline as platelet resuspensions. We measured PDGF and TGF-beta1 concentrations in the samples. In measurements, we had the samples treated to release growth factors from platelets to measure accura...

Lecture Notes in Computer Science, 2009

Detection of a hand holding a cellular phone was developed to recognize whether someone is using ... more Detection of a hand holding a cellular phone was developed to recognize whether someone is using a cellular phone while operating an automated teller machine (ATM). The purpose is to prevent money transfer fraud. Since a victim is told a bogus reason to transfer money and how to operate the machine through a cellular phone, detecting a working cellular phone

ABSTRACT This paper presents a new type ATM called image-ATM and an image workflow system develop... more ABSTRACT This paper presents a new type ATM called image-ATM and an image workflow system developed for banking applications. The system including the image-ATM captures the paper forms brought by the clients at the very front-end, identifies the type of forms, and recognizes the data on the form automatically. The image-ATM can accept over 400 different kinds of forms. The system is presently in operation at some of the Japanese major banks. They could reduce considerable human workforce for their branch offices by introducing the image workflow system and by centralizing the back-office work at a few operation centers. Technically, form recognition, especially form type identification, was one of the keys for this success. This paper discusses a method for form type identification and its technical issues.

A method for street number matching in Japanese address recognition is presented. This method use... more A method for street number matching in Japanese address recognition is presented. This method uses the knowledge about the number expression formats, which is represented by the expression patterns of street numbers. The expression patterns are composed of character class symbols which represent numerals and delimiter characters. By matching the expression patterns against the character candidates in the lattice which is the result of character recognition, the class symbol lattice is generated. In the class symbol lattice, the numeral and delimiter character candidates are replaced by the corresponding class symbol. An experiment using 6,136 expression patterns showed that 93% of street numbers on the test mail-pieces were correctly recognized

Journal of Craniofacial Surgery, 2015

Simulated craniomaxillofacial surgery is critical for planning the procedure, shortening operativ... more Simulated craniomaxillofacial surgery is critical for planning the procedure, shortening operative time, and practicing the procedure. However, typical models are expensive, given their solid materials, and the surgical sensations do not accurately reflect the procedure performed using human bone. To solve these problems, a new solid salt model has been developed. Stereolithography data was generated using computed tomography data, and a salt model was created using a 3D inkjet printer. By extracting specific data for elements such as the teeth and mandibular canal, these elements were highlighted in the solid model using different colored material. Also, we compared the maximum load and plastic deformation of the salt model, a stereolithographic resin model, and a pig limb. The salt model had similar tenacity to bone, and the risk of damage to the teeth and inferior alveolar nerve was easily confirmed. The material cost of the salt model is extremely low, and the salt model may provide a more accurate sensation of cutting human bone. Thus, this model is useful for both simulated operation and practice for inexperienced surgeons.

Clinical ophthalmology (Auckland, N.Z.), 2014

Currently, only a few reports have recommended surgery as a suitable treatment for blepharoptosis... more Currently, only a few reports have recommended surgery as a suitable treatment for blepharoptosis associated with myasthenia gravis. The present study aims to introduce our surgical criteria, surgical options, outcomes, and precautions for medically refractory myasthenic blepharoptosis. Eight patients who failed to respond to at least 2 years of medical treatment and who underwent blepharoptosis surgery, from January 2008 to December 2011, were enrolled in this study. Medical records, photographs, and questionnaire results regarding postoperative status were evaluated. Of the eleven procedures performed, four involved frontal suspension, four involved external levator advancement, one involved nonincisional transconjunctival levator advancement, and two involved subbrow blepharoplasty with orbicularis oculi muscle tucking. The margin reflex distance improved postoperatively in seven patients. Seven patients had very minimal scarring, and one had minimal scarring. Five patients showe...

Scandinavian journal of plastic and reconstructive surgery and hand surgery / Nordisk plastikkirurgisk forening [and] Nordisk klubb for handkirurgi, 2009

For the repair of syndactyly of the foot, skin grafting is often used to close the skin defect, b... more For the repair of syndactyly of the foot, skin grafting is often used to close the skin defect, but open treatment is not common. However, with grafting, an additional scar at the donor site and patchwork-like scar at the recipient site are inevitable. Our aim was to describe the process of epithelialisation and define the indications for open treatment of syndactyly of the foot. The open treatment was used on 16 webs. The texture of epithelialised surface resembled volar skin; the visible scar was mainly at the dorsal edge; and web creep occurred predominantly on the volar side and resembled the natural slope of the commissure. Open treatment is better than skin grafting because of better match of texture without a patchwork-like scar, and it is indicated in cases of simple incomplete syndactyly of the foot that extends proximal to the distal interphalangeal joint.

Plastic and reconstructive surgery, 2007

As the nasal platform, the piriform margin is considered the most important nasal structure. An i... more As the nasal platform, the piriform margin is considered the most important nasal structure. An insufficient bony structure has been suggested to be the major factor in secondary nasal deformities such as the "depressed alar base." It is unclear, however, how the piriform margin is depressed or how bony depression influences nasal shape. Using cone beam computed tomography, the anteroposterior positions of the cleft-side piriform margin and alar base were compared with those of the noncleft side in 52 postoperative unilateral cleft lip patients with no alveolar bone graft. Patients were divided based on cleft type into either the unilateral cleft lip, alveolus, and palate group or the unilateral cleft lip and alveolus group. In all cases, the cleft-side piriform margin was depressed. The anteroposterior position of the alar base was related to the piriform depression in both groups. However, in contrast with bony depression, the cleft-side alar base was located more anteri...

Plastic Surgery: An International Journal, 2013

Annals of Maxillofacial Surgery, 2013

The goals of treatment for hemifacial microsomia include horizontalization of occlusal plane and ... more The goals of treatment for hemifacial microsomia include horizontalization of occlusal plane and acquisition of facial symmetry. Although horizontalization of occlusal plane can be easily achieved, facial symmetry, particularly in relation to mandibular contour, can be difficult to attain. Soft tissue is generally reconstructed to correct facial asymmetry, and no studies have described correction of facial asymmetry through skeletal reconstruction. A 12-year-old girl presented with grade IIb right-sided hemifacial microsomia. She was treated using Nakajima's angle-variable internal distraction (NAVID) system for mandibular body distraction. Following treatment, appropriate facial symmetry was achieved, and the patient was extremely satisfied with the results. Thus, we successfully treated the present patient by our novel method involving distraction osteogenesis. This method was effective and useful for several reasons including; the changes were not accompanied by postoperative tissue absorption, donor sites were not involved, and the treatment outcome could be reevaluated by adjusting distraction while the patient's appearance was being remodeled.

International Journal of Pediatric Otorhinolaryngology, 2013

To evaluate the effect of diagnostic and operative time on velopharyngeal closure in submucosal c... more To evaluate the effect of diagnostic and operative time on velopharyngeal closure in submucosal cleft palate (SMCP). SMCP patients treated at the Keio University School of Medicine from 1986 to 2011 were enrolled as subjects. Clinical data were obtained, including patient sex, age at diagnosis, and operative age, occasion of diagnosis, accompanying deformities, speech test results before and 6 months after palatoplasty, and pharyngeal flap usage after palatoplasty. Data were available for 16 patients, with a mean diagnostic age of 51.1 months (range: 0-132 months). The clinical presentations were bifid uvula in 4 patients and speech dysfunction in 11. The cases suspected from bifid uvula were diagnosed significantly earlier than those with speech dysfunction (19.5 versus 56.8 months, p<0.01). Velopharyngeal closure was improved in 6 cases, and the average age of these patients at surgery was significantly lower than that of the other patients (46.7 versus 79.8 months, p<0.05). A pharyngeal flap was performed in 7 cases (43.8%). The pharyngeal flap usage rate in cleft palate patients other than those with SMCP was significantly lower than that of SMCP patients (3.5% versus 43.8%, p<0.01). Early discovery and surgical correction is vital for improving postoperative speech outcomes in SMCP patients. This requires educating physicians about SMCP and future studies regarding simple and effective SMCP screening methods.

Document Recognition and Retrieval X, 2003

ABSTRACT This paper presents a new type ATM called image-ATM and an image workflow system develop... more ABSTRACT This paper presents a new type ATM called image-ATM and an image workflow system developed for banking applications. The system including the image-ATM captures the paper forms brought by the clients at the very front-end, identifies the type of forms, and recognizes the data on the form automatically. The image-ATM can accept over 400 different kinds of forms. The system is presently in operation at some of the Japanese major banks. They could reduce considerable human workforce for their branch offices by introducing the image workflow system and by centralizing the back-office work at a few operation centers. Technically, form recognition, especially form type identification, was one of the keys for this success. This paper discusses a method for form type identification and its technical issues.

Journal of plastic surgery and hand surgery, 2013

The present study aims to elucidate the relationship between preoperative deviation patterns of f... more The present study aims to elucidate the relationship between preoperative deviation patterns of fractured zygomas and treatment outcomes. Forty-five randomly selected patients with tri-pod type zygoma fractures were classified into a medial rotation group and a lateral rotation group, depending on preoperative deviation patterns. A minimum of 6 months after the operation, symmetry of the cheek was evaluated by three plastic surgeons using a VAS system. The evaluated scores were compared between the two groups. Furthermore, simulation of postoperative secondary deformity was performed by applying hypothetically defined relapse forces on CAD models produced by referring to the CT data of 20 patients. The deviation values obtained by the simulation were compared between the two groups. The results demonstrate that VAS scores were higher for the lateral rotation group than for the medial rotation group and that the deviation values were higher for the medial rotation group than for the ...