Yahya Paksoy - Academia.edu (original) (raw)

Papers by Yahya Paksoy

Journal of Ultrasound in Medicine Official Journal of the American Institute of Ultrasound in Medicine, Aug 1, 2003

Objective. The purpose of this study was to investigate the scolicidal effect of intracystic inje... more Objective. The purpose of this study was to investigate the scolicidal effect of intracystic injection of benzimidazolic solutions in naturally infected sheep with hydatid disease. Methods. Twenty-four sheep with 37 hydatid cysts were included in this study for percutaneous treatment with benzimidazolic solutions. The animals were divided into 3 groups: group I, treatment group with mebendazole; group II, treatment group with albendazole; and group III, control group with distilled water. All solutions were given percutaneously under sonographic guidance. Cyst contents were aspirated with a needle, and then scolicidal solutions were injected into the cysts; reaspiration was not done. Routine follow-up sonographic images were taken on the 15th day after treatment, then once per month for 3 months, and then at 3-month intervals thereafter. At the 1-month follow-up, the percutaneous aspirate yielded orange juice-like material containing necrotic debris without living scolices. Results. Sonography showed a reduction in cyst size in the benzimidazolic groups (groups I and II) and progressive changes in echo patterns. An anaphylactic reaction was observed during the procedure in 1 animal. After 12 months of sonographic follow-up, the animals in all groups were killed, and macroscopic and microscopic changes in tissue samples were evaluated. At autopsy, no cysts with living scolices were found in the benzimidazolic groups, and the appearance of the treated cysts was different from that of those in the control group. Microscopic examination showed the degeneration, necrosis, and thickening of the cyst walls in the treatment groups. Conclusions. Intracystic injection of benzimidazolic solutions as scolicidal agents may be used for percutaneous treatment of hepatic hydatid cysts in sheep.

Turkiye Klinikleri Journal of Medical Sciences, 1996

Acta Neurologica Belgica, 2015

American Journal of Neuroradiology

We attempted to identify the cause of abnormal venous flow seen during arterial MR angiography in... more We attempted to identify the cause of abnormal venous flow seen during arterial MR angiography in the inferior petrosal sinus by use of in three female patients (aged 51, 48, and 70 years, respectively).

Acta Neurologica Belgica, 2015

Journal of applied clinical medical physics / American College of Medical Physics, 2015

The purpose of our study was to investigate the effect of iterative reconstruction (IR) as a dose... more The purpose of our study was to investigate the effect of iterative reconstruction (IR) as a dose reduction system on the image quality (IQ) of the adult head computed tomography (CT) at various low-dose levels, and to identify ways of setting the amount of dose reduction. We performed two noncontrast low-dose (LD) adult head CT protocols modified by lowering the tube current with IR which were decided in the light of a group of phantom studies. Two groups of patients, each 100 underwent noncontrast head CT with LD-I and LD-II, respectively. These groups were compared with 100 consecutive standard dose (STD) adult head CT protocol in terms of quantitative and qualitative IQ. The signal-to-noise ratio (SNR) of the white matter (WM) and gray matter (GM) and contrast-to-noise ratio (CNR) values in the LD groups were higher than the STD group. The differences were statistically significant. When the STD and the LD groups were compared qualitatively, no significant differences were found...

Annals of vascular surgery, 2005

A 20-year-old pregnant woman was admitted to our department with symptoms of deep venous thrombos... more A 20-year-old pregnant woman was admitted to our department with symptoms of deep venous thrombosis in the left lower extremity and excessive lumbar pain. Low-molecular-weight heparin was administered. She recovered with this treatment, however, severe lumbar pain continued. A lumbar magnetic resonance image showed dilated epidural veins compressing the roots and acute thrombosis of the inferior vena cava extending to renal veins. During the same period she had acute deep venous thrombosis in her right leg. An urgent venous thrombectomy was performed. Sciatica and deep venous thrombosis resolved after the operation. Low-molecular-weight heparin was administered until the end of her pregnancy.

Canadian journal of surgery. Journal canadien de chirurgie, 2001

To investigate the effect of percutaneous drainage on liver hydatid cysts. A retrospective case s... more To investigate the effect of percutaneous drainage on liver hydatid cysts. A retrospective case study. Department of Surgery, Selçuk University, Konya, Turkey. Forty-five patients with 83 liver hydatid cysts (types I and II according to the classification of Gharbi and colleagues) followed up for a mean of 30 months (range from 14 to 36 months). The cysts were drained percutaneously with ultrasonographic guidance and then irrigated with 0.05% silver nitrate solution through a fine needle. Albendazole was administered 48 hours before percutaneous drainage and for 2 months after the procedure to prevent the implantation of spilled scolices. Complications of the procedure, decrease in size of the cyst cavity, recurrence and dissemination of the cysts. All the cysts were treated successfully by percutaneous drainage. Anaphylactic shock developed in 1 (2.2 %) patient, and mild allergic reactions were observed in 2 (4.4 %) patients during the interventional procedure. Follow-up ultrasonog...

Turkiye Klinikleri Journal of Medical Sciences, 2012

ABSTRACT Cutis tricolor is a skin disorder characterized by the coexistence of congenital hypo-an... more ABSTRACT Cutis tricolor is a skin disorder characterized by the coexistence of congenital hypo-and hyperpigmented maculer lesions, in close proximity to each other on a background of normal skin. Cutis tricolor parvimaculata describes the form consisting of smaller spots. These skin macules are called twin spotting and represent a part of a neurocutaneous malformation syndrome. Cut is tricolor may accompany various multisystem birth defects including craniofacial and brain abnormalities. It must be distinguished from other neurocutaneous syndromes such as tuberous sclerosis and neurofibromatosis. We described cutis tricolor parvimaculata in a 3-year-old girl, the reported youngest patient in the literature, with diffuse pigmentary spotting on the skin, facial anomalies, developmental delay and brain involvement.

The Turkish journal of pediatrics

Epstein-Barr virus is an infection that is known as infectious mononucleosis. Even though the cen... more Epstein-Barr virus is an infection that is known as infectious mononucleosis. Even though the central nervous system is not a primary region of involvement of this disease, neurological complications are reported rarely. In this case report, we evaluated a 15-month-old male who presented to the pediatric neurology clinic due to high fever and a neurologic attack. His serological tests and radiological examinations (magnetic resonance imaging (MRI), MR spectroscopy (MRS), diffusion-weighted imaging (DWI) and MR perfusion) were consistent with Epstein-Barr virus encephalitis, which is a very rare complication of infectious mononucleosis. Additionally, we discuss the MRI, MRS, DWI and MR perfusion findings of our case, which were different from other cases reported in the literature.

AJNR. American journal of neuroradiology, 2003

We attempted to identify the cause of abnormal venous flow seen during arterial MR angiography in... more We attempted to identify the cause of abnormal venous flow seen during arterial MR angiography in the inferior petrosal sinus by use of in three female patients (aged 51, 48, and 70 years, respectively). Arterial 3D time-of-flight MR angiography was performed with a tilted optimized nonsaturating excitation pulse sequence (TR/TE, 31/7; flip angle, 20 degrees; section thickness, 65 mm; effective thickness, 1 mm; number of sections, 1 to 2); no magnetization transfer pulse sequence was used. Contrast-enhanced 3D MR angiography of the neck was performed with a 3D fast low-angle shot pulse sequence (TR/TE, 4.6/1.8; flip angle, 40 to 45 degrees; section thickness, 80 mm; intersection gap, 1.5 mm; acquisition matrix, 180 x 256; acquisition time, 27 s) on a system with a whole-body coil. In all three patients, 3D time-of-flight MR angiography revealed abnormal vascular signal originating from the left cavernous sinus, continuing through the inferior petrosal sinus, and ending in the proxim...

Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine, 2003

The purpose of this study was to investigate the scolicidal effect of intracystic injection of be... more The purpose of this study was to investigate the scolicidal effect of intracystic injection of benzimidazolic solutions in naturally infected sheep with hydatid disease. Twenty-four sheep with 37 hydatid cysts were included in this study for percutaneous treatment with benzimidazolic solutions. The animals were divided into 3 groups: group I, treatment group with mebendazole; group II, treatment group with albendazole; and group III, control group with distilled water. All solutions were given percutaneously under sonographic guidance. Cyst contents were aspirated with a needle, and then scolicidal solutions were injected into the cysts; reaspiration was not done. Routine follow-up sonographic images were taken on the 15th day after treatment, then once per month for 3 months, and then at 3-month intervals thereafter. At the 1-month follow-up, the percutaneous aspirate yielded orange juice-like material containing necrotic debris without living scolices. Sonography showed a reductio...

Journal of Medical Imaging and Radiation Oncology, 2014

To determine the diagnostic accuracy of diffusion-weighted magnetic resonance imaging (DW-MRI) fo... more To determine the diagnostic accuracy of diffusion-weighted magnetic resonance imaging (DW-MRI) for the pre-operative assessment of patients with endometrial carcinoma and to assess myometrial and cervical invasion as well as pelvic lymph node metastasis. Fifty-eight women who underwent surgery for histopathologically confirmed endometrial carcinoma were included in the current study. Prior to surgery, patients were evaluated using pelvic DW-MRI and gadolinium-enhanced T1-weighted imaging (Gd-T1WI). Gd-T1WI was evaluated together with T2-weighted images. DW-MR images were obtained in the axial plane using echo-planar spin-echo pulse sequences with different b factors. Endometrial carcinomas were observed as areas of increased intensity on DW-MRI images, and their intensity was compared with the surrounding hypo-intense myometrium. Pre-operative DW-MRI and Gd-T1WI results were compared with post-operative histopathological findings that served as reference standards. The sensitivity, specificity, positive (PPV) and negative predictive values (NPV), and diagnostic accuracy of DW-MRI for differentiation between superficial myometrial invasion and deep myometrial invasion were 85%, 89%, 81%, 92% and 88%, respectively. The sensitivity, specificity and diagnostic accuracy rates were 82%, 91% and 89.6% for cervical invasion and 100%, 96% and 96.5% for pelvic lymph node metastasis, respectively. The sensitivity, specificity, PPV and NPV, and diagnostic accuracy of Gd-T1WI for differentiation between superficial myometrial invasion and deep myometrial invasion were 85%, 81.5%, 71%, 91% and 83%, respectively. The sensitivity, specificity and diagnostic accuracy were 73%, 89% and 86% for cervical invasion, respectively. These findings suggest that DW-MRI may be a good diagnostic tool with high sensitivity and specificity for assessing myometrial invasion and detecting tumour extension. We suggest that DW-MRI should be considered as a routine part of the pre-operative pelvic MRI in all patients with endometrial carcinoma.

International Journal of Morphology, 2013

ULUSOY, M.; KIVRAK, A. S.; UYSAL, I. I.; KARABULUT, A. K.; PAKSOY, Y. & FAZLIOGULLARI, Z. Develop... more ULUSOY, M.; KIVRAK, A. S.; UYSAL, I. I.; KARABULUT, A. K.; PAKSOY, Y. & FAZLIOGULLARI, Z. Developmental anomalies of bronchial tree: A multidetector computerized tomography study. Int. J. Morphol., 31(3):1049-1055, 2013.

The Turkish journal of pediatrics

Takayasu arteritis (TA) is a large vessel vasculitis that involves the aorta, its major branches ... more Takayasu arteritis (TA) is a large vessel vasculitis that involves the aorta, its major branches and pulmonary arteries. Diagnosis of TA during childhood remains challenging due to the non-specific symptoms. We report a four-year-old girl presenting with fever, fatigue, weight loss, and elbow pain who was later diagnosed as childhood TA. On admission, she had fever, hypertension, decreased pulses, bruits, hepatosplenomegaly, and increased erythrocyte sedimentation rate and C-reactive protein level. Computed tomography angiography showed luminal narrowing and wall thickening in ascending aorta, brachiocephalic, left common carotid and left vertebral arteries and descending aorta. Oral corticosteroid (prednisone, 2 mg/kg/day) was instituted, later followed by oral methotrexate (12.5 mg/m2/week). TA is rare in children; however, childhood TA must be considered in children who present with non-specific systemic symptoms, hypertension and increased acute phase reactants.

Journal of Neuroradiology, 2013

Diagnostic and Interventional Radiology, 2012

There are two well-known indications for first-pass perfusion in the literature. First is the eva... more There are two well-known indications for first-pass perfusion in the literature. First is the evaluation of myocardial ischemia, and the other is the evaluation of tumor vascularity. Our aim was to assess the value of a first-pass contrast bolus tracking sequence (FPCBTS) for cases unrelated to these pathologies. A total of 35 patients (age range, 1 day to 66 years; mean age, 10.4±19.2 years; median age, 4.5 months) with suspected congenital (n=31) and acquired (n=4) heart and great vessel disease were included in the study. All the patients underwent cardiac magnetic resonance imaging (MRI) and FPCBTS, and 20 patients underwent contrast enhanced magnetic resonance angiography (CE-MRA). We used cardiac MRI and CEMRA for anatomic evaluation and FPCBTS for dynamic flow evaluation. Truncus arteriosus, double outlet right ventricle, tetralogy of Fallot, corrected transposition of great arteries, atrial and ventricular septal defect, aortic rupture, cardiac hydatid cyst, tricuspid atresia, anomalous pulmonary venous return, and interrupted aorta were detected using the technique described here. Septal defects in six patients and atrial aneurysm in two patients were excluded. The shunt gap and flow direction of the septal defects, a ruptured wall in a dissected aorta, a hydatid cyst, and the atrial relationship in two cases with paracardiac masses were diagnosed easily using this dynamic evaluation technique. FPCBTS can be performed in addition to cardiac MRI and CEMRA to reveal flow dynamics and morphology.

Spine, 2003

Patients with cervicobrachial pain were examined in detail with special attention to vertebral ar... more Patients with cervicobrachial pain were examined in detail with special attention to vertebral artery loop formation. To determine the incidence, short-time natural course and response to a conservative approach to vertebral artery loop formation in a group of patients with cervicobrachial pain. Vertebral artery loop formation is reported to be a rare cause of cervicobrachial neuralgia, discovered incidentally during the search for its cause. It can be congenital or acquired, occurring equally in both sexes. Surgical decompression has been the preferred method in the majority of reported cases, with favorable results. One hundred seventy-three patients with cervicobrachial pain were examined in a period of 7 months using physical examination, radiography, and magnetic resonance imaging with or without angiography. Thirteen patients with a mean age of 43.9 +/- 13.5 years were diagnosed with vertebral artery loop formation. The most common level was C6-C7. Four patients presented with loop formation at two levels. None of the patients had symptoms attributable to intervertebral disc pathology. The complaints were in accordance with the level of the vascular pathology. Complete relief or decrease in pain was observed in all patients with the conservative approach. In patients with cervicobrachialgic symptoms and without established discopathy, during the examination of sagittal magnetic resonance images, vertebral artery loop formation should be kept in mind, and in suspected cases, the vertebral artery should be visualized using three-dimensional time of flight magnetic resonance angiography. Vertebral artery-nerve root relation should also be demonstrated using the multiplanar reformatting method from time of flight images. A conservative course of treatment has a favorable outcome.

Diagnostic and Interventional Radiology, 2011

Journal of Ultrasound in Medicine Official Journal of the American Institute of Ultrasound in Medicine, Aug 1, 2003

Objective. The purpose of this study was to investigate the scolicidal effect of intracystic inje... more Objective. The purpose of this study was to investigate the scolicidal effect of intracystic injection of benzimidazolic solutions in naturally infected sheep with hydatid disease. Methods. Twenty-four sheep with 37 hydatid cysts were included in this study for percutaneous treatment with benzimidazolic solutions. The animals were divided into 3 groups: group I, treatment group with mebendazole; group II, treatment group with albendazole; and group III, control group with distilled water. All solutions were given percutaneously under sonographic guidance. Cyst contents were aspirated with a needle, and then scolicidal solutions were injected into the cysts; reaspiration was not done. Routine follow-up sonographic images were taken on the 15th day after treatment, then once per month for 3 months, and then at 3-month intervals thereafter. At the 1-month follow-up, the percutaneous aspirate yielded orange juice-like material containing necrotic debris without living scolices. Results. Sonography showed a reduction in cyst size in the benzimidazolic groups (groups I and II) and progressive changes in echo patterns. An anaphylactic reaction was observed during the procedure in 1 animal. After 12 months of sonographic follow-up, the animals in all groups were killed, and macroscopic and microscopic changes in tissue samples were evaluated. At autopsy, no cysts with living scolices were found in the benzimidazolic groups, and the appearance of the treated cysts was different from that of those in the control group. Microscopic examination showed the degeneration, necrosis, and thickening of the cyst walls in the treatment groups. Conclusions. Intracystic injection of benzimidazolic solutions as scolicidal agents may be used for percutaneous treatment of hepatic hydatid cysts in sheep.

Turkiye Klinikleri Journal of Medical Sciences, 1996

Acta Neurologica Belgica, 2015

American Journal of Neuroradiology

We attempted to identify the cause of abnormal venous flow seen during arterial MR angiography in... more We attempted to identify the cause of abnormal venous flow seen during arterial MR angiography in the inferior petrosal sinus by use of in three female patients (aged 51, 48, and 70 years, respectively).

Acta Neurologica Belgica, 2015

Journal of applied clinical medical physics / American College of Medical Physics, 2015

The purpose of our study was to investigate the effect of iterative reconstruction (IR) as a dose... more The purpose of our study was to investigate the effect of iterative reconstruction (IR) as a dose reduction system on the image quality (IQ) of the adult head computed tomography (CT) at various low-dose levels, and to identify ways of setting the amount of dose reduction. We performed two noncontrast low-dose (LD) adult head CT protocols modified by lowering the tube current with IR which were decided in the light of a group of phantom studies. Two groups of patients, each 100 underwent noncontrast head CT with LD-I and LD-II, respectively. These groups were compared with 100 consecutive standard dose (STD) adult head CT protocol in terms of quantitative and qualitative IQ. The signal-to-noise ratio (SNR) of the white matter (WM) and gray matter (GM) and contrast-to-noise ratio (CNR) values in the LD groups were higher than the STD group. The differences were statistically significant. When the STD and the LD groups were compared qualitatively, no significant differences were found...

Annals of vascular surgery, 2005

A 20-year-old pregnant woman was admitted to our department with symptoms of deep venous thrombos... more A 20-year-old pregnant woman was admitted to our department with symptoms of deep venous thrombosis in the left lower extremity and excessive lumbar pain. Low-molecular-weight heparin was administered. She recovered with this treatment, however, severe lumbar pain continued. A lumbar magnetic resonance image showed dilated epidural veins compressing the roots and acute thrombosis of the inferior vena cava extending to renal veins. During the same period she had acute deep venous thrombosis in her right leg. An urgent venous thrombectomy was performed. Sciatica and deep venous thrombosis resolved after the operation. Low-molecular-weight heparin was administered until the end of her pregnancy.

Canadian journal of surgery. Journal canadien de chirurgie, 2001

To investigate the effect of percutaneous drainage on liver hydatid cysts. A retrospective case s... more To investigate the effect of percutaneous drainage on liver hydatid cysts. A retrospective case study. Department of Surgery, Selçuk University, Konya, Turkey. Forty-five patients with 83 liver hydatid cysts (types I and II according to the classification of Gharbi and colleagues) followed up for a mean of 30 months (range from 14 to 36 months). The cysts were drained percutaneously with ultrasonographic guidance and then irrigated with 0.05% silver nitrate solution through a fine needle. Albendazole was administered 48 hours before percutaneous drainage and for 2 months after the procedure to prevent the implantation of spilled scolices. Complications of the procedure, decrease in size of the cyst cavity, recurrence and dissemination of the cysts. All the cysts were treated successfully by percutaneous drainage. Anaphylactic shock developed in 1 (2.2 %) patient, and mild allergic reactions were observed in 2 (4.4 %) patients during the interventional procedure. Follow-up ultrasonog...

Turkiye Klinikleri Journal of Medical Sciences, 2012

ABSTRACT Cutis tricolor is a skin disorder characterized by the coexistence of congenital hypo-an... more ABSTRACT Cutis tricolor is a skin disorder characterized by the coexistence of congenital hypo-and hyperpigmented maculer lesions, in close proximity to each other on a background of normal skin. Cutis tricolor parvimaculata describes the form consisting of smaller spots. These skin macules are called twin spotting and represent a part of a neurocutaneous malformation syndrome. Cut is tricolor may accompany various multisystem birth defects including craniofacial and brain abnormalities. It must be distinguished from other neurocutaneous syndromes such as tuberous sclerosis and neurofibromatosis. We described cutis tricolor parvimaculata in a 3-year-old girl, the reported youngest patient in the literature, with diffuse pigmentary spotting on the skin, facial anomalies, developmental delay and brain involvement.

The Turkish journal of pediatrics

Epstein-Barr virus is an infection that is known as infectious mononucleosis. Even though the cen... more Epstein-Barr virus is an infection that is known as infectious mononucleosis. Even though the central nervous system is not a primary region of involvement of this disease, neurological complications are reported rarely. In this case report, we evaluated a 15-month-old male who presented to the pediatric neurology clinic due to high fever and a neurologic attack. His serological tests and radiological examinations (magnetic resonance imaging (MRI), MR spectroscopy (MRS), diffusion-weighted imaging (DWI) and MR perfusion) were consistent with Epstein-Barr virus encephalitis, which is a very rare complication of infectious mononucleosis. Additionally, we discuss the MRI, MRS, DWI and MR perfusion findings of our case, which were different from other cases reported in the literature.

AJNR. American journal of neuroradiology, 2003

We attempted to identify the cause of abnormal venous flow seen during arterial MR angiography in... more We attempted to identify the cause of abnormal venous flow seen during arterial MR angiography in the inferior petrosal sinus by use of in three female patients (aged 51, 48, and 70 years, respectively). Arterial 3D time-of-flight MR angiography was performed with a tilted optimized nonsaturating excitation pulse sequence (TR/TE, 31/7; flip angle, 20 degrees; section thickness, 65 mm; effective thickness, 1 mm; number of sections, 1 to 2); no magnetization transfer pulse sequence was used. Contrast-enhanced 3D MR angiography of the neck was performed with a 3D fast low-angle shot pulse sequence (TR/TE, 4.6/1.8; flip angle, 40 to 45 degrees; section thickness, 80 mm; intersection gap, 1.5 mm; acquisition matrix, 180 x 256; acquisition time, 27 s) on a system with a whole-body coil. In all three patients, 3D time-of-flight MR angiography revealed abnormal vascular signal originating from the left cavernous sinus, continuing through the inferior petrosal sinus, and ending in the proxim...

Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine, 2003

The purpose of this study was to investigate the scolicidal effect of intracystic injection of be... more The purpose of this study was to investigate the scolicidal effect of intracystic injection of benzimidazolic solutions in naturally infected sheep with hydatid disease. Twenty-four sheep with 37 hydatid cysts were included in this study for percutaneous treatment with benzimidazolic solutions. The animals were divided into 3 groups: group I, treatment group with mebendazole; group II, treatment group with albendazole; and group III, control group with distilled water. All solutions were given percutaneously under sonographic guidance. Cyst contents were aspirated with a needle, and then scolicidal solutions were injected into the cysts; reaspiration was not done. Routine follow-up sonographic images were taken on the 15th day after treatment, then once per month for 3 months, and then at 3-month intervals thereafter. At the 1-month follow-up, the percutaneous aspirate yielded orange juice-like material containing necrotic debris without living scolices. Sonography showed a reductio...

Journal of Medical Imaging and Radiation Oncology, 2014

To determine the diagnostic accuracy of diffusion-weighted magnetic resonance imaging (DW-MRI) fo... more To determine the diagnostic accuracy of diffusion-weighted magnetic resonance imaging (DW-MRI) for the pre-operative assessment of patients with endometrial carcinoma and to assess myometrial and cervical invasion as well as pelvic lymph node metastasis. Fifty-eight women who underwent surgery for histopathologically confirmed endometrial carcinoma were included in the current study. Prior to surgery, patients were evaluated using pelvic DW-MRI and gadolinium-enhanced T1-weighted imaging (Gd-T1WI). Gd-T1WI was evaluated together with T2-weighted images. DW-MR images were obtained in the axial plane using echo-planar spin-echo pulse sequences with different b factors. Endometrial carcinomas were observed as areas of increased intensity on DW-MRI images, and their intensity was compared with the surrounding hypo-intense myometrium. Pre-operative DW-MRI and Gd-T1WI results were compared with post-operative histopathological findings that served as reference standards. The sensitivity, specificity, positive (PPV) and negative predictive values (NPV), and diagnostic accuracy of DW-MRI for differentiation between superficial myometrial invasion and deep myometrial invasion were 85%, 89%, 81%, 92% and 88%, respectively. The sensitivity, specificity and diagnostic accuracy rates were 82%, 91% and 89.6% for cervical invasion and 100%, 96% and 96.5% for pelvic lymph node metastasis, respectively. The sensitivity, specificity, PPV and NPV, and diagnostic accuracy of Gd-T1WI for differentiation between superficial myometrial invasion and deep myometrial invasion were 85%, 81.5%, 71%, 91% and 83%, respectively. The sensitivity, specificity and diagnostic accuracy were 73%, 89% and 86% for cervical invasion, respectively. These findings suggest that DW-MRI may be a good diagnostic tool with high sensitivity and specificity for assessing myometrial invasion and detecting tumour extension. We suggest that DW-MRI should be considered as a routine part of the pre-operative pelvic MRI in all patients with endometrial carcinoma.

International Journal of Morphology, 2013

ULUSOY, M.; KIVRAK, A. S.; UYSAL, I. I.; KARABULUT, A. K.; PAKSOY, Y. & FAZLIOGULLARI, Z. Develop... more ULUSOY, M.; KIVRAK, A. S.; UYSAL, I. I.; KARABULUT, A. K.; PAKSOY, Y. & FAZLIOGULLARI, Z. Developmental anomalies of bronchial tree: A multidetector computerized tomography study. Int. J. Morphol., 31(3):1049-1055, 2013.

The Turkish journal of pediatrics

Takayasu arteritis (TA) is a large vessel vasculitis that involves the aorta, its major branches ... more Takayasu arteritis (TA) is a large vessel vasculitis that involves the aorta, its major branches and pulmonary arteries. Diagnosis of TA during childhood remains challenging due to the non-specific symptoms. We report a four-year-old girl presenting with fever, fatigue, weight loss, and elbow pain who was later diagnosed as childhood TA. On admission, she had fever, hypertension, decreased pulses, bruits, hepatosplenomegaly, and increased erythrocyte sedimentation rate and C-reactive protein level. Computed tomography angiography showed luminal narrowing and wall thickening in ascending aorta, brachiocephalic, left common carotid and left vertebral arteries and descending aorta. Oral corticosteroid (prednisone, 2 mg/kg/day) was instituted, later followed by oral methotrexate (12.5 mg/m2/week). TA is rare in children; however, childhood TA must be considered in children who present with non-specific systemic symptoms, hypertension and increased acute phase reactants.

Journal of Neuroradiology, 2013

Diagnostic and Interventional Radiology, 2012

There are two well-known indications for first-pass perfusion in the literature. First is the eva... more There are two well-known indications for first-pass perfusion in the literature. First is the evaluation of myocardial ischemia, and the other is the evaluation of tumor vascularity. Our aim was to assess the value of a first-pass contrast bolus tracking sequence (FPCBTS) for cases unrelated to these pathologies. A total of 35 patients (age range, 1 day to 66 years; mean age, 10.4±19.2 years; median age, 4.5 months) with suspected congenital (n=31) and acquired (n=4) heart and great vessel disease were included in the study. All the patients underwent cardiac magnetic resonance imaging (MRI) and FPCBTS, and 20 patients underwent contrast enhanced magnetic resonance angiography (CE-MRA). We used cardiac MRI and CEMRA for anatomic evaluation and FPCBTS for dynamic flow evaluation. Truncus arteriosus, double outlet right ventricle, tetralogy of Fallot, corrected transposition of great arteries, atrial and ventricular septal defect, aortic rupture, cardiac hydatid cyst, tricuspid atresia, anomalous pulmonary venous return, and interrupted aorta were detected using the technique described here. Septal defects in six patients and atrial aneurysm in two patients were excluded. The shunt gap and flow direction of the septal defects, a ruptured wall in a dissected aorta, a hydatid cyst, and the atrial relationship in two cases with paracardiac masses were diagnosed easily using this dynamic evaluation technique. FPCBTS can be performed in addition to cardiac MRI and CEMRA to reveal flow dynamics and morphology.

Spine, 2003

Patients with cervicobrachial pain were examined in detail with special attention to vertebral ar... more Patients with cervicobrachial pain were examined in detail with special attention to vertebral artery loop formation. To determine the incidence, short-time natural course and response to a conservative approach to vertebral artery loop formation in a group of patients with cervicobrachial pain. Vertebral artery loop formation is reported to be a rare cause of cervicobrachial neuralgia, discovered incidentally during the search for its cause. It can be congenital or acquired, occurring equally in both sexes. Surgical decompression has been the preferred method in the majority of reported cases, with favorable results. One hundred seventy-three patients with cervicobrachial pain were examined in a period of 7 months using physical examination, radiography, and magnetic resonance imaging with or without angiography. Thirteen patients with a mean age of 43.9 +/- 13.5 years were diagnosed with vertebral artery loop formation. The most common level was C6-C7. Four patients presented with loop formation at two levels. None of the patients had symptoms attributable to intervertebral disc pathology. The complaints were in accordance with the level of the vascular pathology. Complete relief or decrease in pain was observed in all patients with the conservative approach. In patients with cervicobrachialgic symptoms and without established discopathy, during the examination of sagittal magnetic resonance images, vertebral artery loop formation should be kept in mind, and in suspected cases, the vertebral artery should be visualized using three-dimensional time of flight magnetic resonance angiography. Vertebral artery-nerve root relation should also be demonstrated using the multiplanar reformatting method from time of flight images. A conservative course of treatment has a favorable outcome.

Diagnostic and Interventional Radiology, 2011