Application of 3D printing technology for pre-operative evaluation, education and informed consent in pediatric retroperitoneal tumors (original) (raw)
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Pediatric Reports, 2022
Background: In cases with solid tumors, preoperative radiological investigations provide valuable information on the anatomy of the tumor and the adjoining structures, thus helping in operative planning. However, due to a two-dimensional view in these investigations, a detailed spatial relationship is difficult to decipher. In contrast, three-dimensional (3D) printing technology provides a precise topographic view to perform safe surgical resections of these tumors. This systematic review aimed to summarize and analyze current evidence on the utility of 3D printing in pediatric extra-cranial solid tumors. Methods: The present study was registered on PROSPERO—international prospective register of systematic reviews (registration number: CRD42020206022). PubMed, Embase, SCOPUS, and Google Scholar databases were explored with appropriate search criteria to select the relevant studies. Data were extracted to study the bibliographic information of each article, the number of patients in ...
3D Printing in Neurosurgical Oncology: a systematic review
JBNC - JORNAL BRASILEIRO DE NEUROCIRURGIA
Additive manufacturing (AM) or 3D printing consists of a technology capable of producing elaborate objects, being a quick method of developing prototypes or products. Specifically, in Oncologic Neurosurgery, AM is useful in training and improving surgical techniques, as in understanding the tumor and its relationships with adjacent structures. However, despite recent advances, the applicability and use of 3D printing in this specialty are still not well established. Thus, this study aims to review and analyze the main applications of this technology in Oncology Neurosurgery. For this, a systematic review was carried out using the appropriate terms in the PubMed and SciELO databases from July to December 2021. The articles were classified according to their applicability in Education and Simulation and/or Surgical Planning. Positive results were found in both aspects, with benefits for patients and the surgical team. In this sense, AM has been shown to promote an experience before surgery, helping to predict the risk of resection, in addition to significantly improving the understanding of the condition and the procedure. It is concluded that more studies addressing the use of this technology should be encouraged, especially concerning long-term outcomes and benefits within the subspecialty.
Use of a three-dimensional printed anatomical model for tumor management in a pediatric patient
SAGE Open Medical Case Reports, 2020
The purpose of this study was to investigate the usage of an anatomical model to improve surgical planning of a complex schwannoma resection. As advancements in additive manufacturing continue to prosper, new applications of this valuable technology are being implemented in the medical field. One of the most recent applications has been in the development of patient-specific anatomical models for unique clinical education as well as for preoperative planning. In this case, a multidisciplinary team with expertise in research, three-dimensional printing, and medicine was formed to develop a three-dimensional printed model that could be used to help plan the reduction of a tumor from the cervical spine of a pediatric patient. Image segmentation and stereolithography creation were accomplished using Mimics and 3-matic, respectively. Models were developed on two different printer types to view different aspects of the region of interest. Reports from the operating surgeon indicated that ...
Value of 3D printing for the comprehension of surgical anatomy
Surgical Endoscopy, 2017
for the anatomical understanding and the pre-operative planning of the scheduled procedure were addressed. Results The visual and tactile inspection of 3D models allowed the best anatomical understanding, with faster and clearer comprehension of the surgical anatomy. As expected, less experienced medical students perceived the highest benefit (53.9% ± 4.14 of correct answers with 3D-printed models, compared to 53.4 % ± 4.6 with virtual models and 45.5% ± 4.6 with MDCT), followed by surgeons and radiologists. The average time spent by participants in 3D model assessing was shorter (60.67 ± 25.5 s) than the one of the corresponding virtual 3D reconstruction (70.8 ± 28.18 s) or conventional MDCT scan (127.04 ± 35.91 s). Conclusions 3D-printed models help to transfer complex anatomical information to clinicians, resulting useful in the pre-operative planning, for intra-operative navigation and for surgical training purposes.
Applied Sciences, 2021
Primary bone sarcomas are rare tumors and surgical resection in combination with chemo and radiation therapy is the mainstay of treatment. Some specific anatomical sites still represent a reconstructive challenge due to their complex three-dimensional anatomy. In recent years, patient specific instruments along with 3D printing technology has come to represent innovative techniques in orthopaedic oncology. We retrospectively reviewed 23 patients affected by primary bone sarcoma treated with patient-specific instruments and 3D printing custom made prostheses. At follow up after approximately two years, the infection rate was 26%, mechanical complication rate 13%, and local recurrence rate 13% (with a five-years implant survival rate of 74%). Based on our experience, patient-specific instruments and 3D custom-made prostheses represents a reliable and safe technique for improving the accuracy of resection of primary bone tumour, with a particular use in pelvic surgery ameliorating func...
Desktop 3D Printing: Key for Surgical Navigation in Acral Tumors?
Applied Sciences
Surgical navigation techniques have shown potential benefits in orthopedic oncologic surgery. However, the translation of these results to acral tumor resection surgeries is challenging due to the large number of joints with complex movements of the affected areas (located in distal extremities). This study proposes a surgical workflow that combines an intraoperative open-source navigation software, based on a multi-camera tracking, with desktop three-dimensional (3D) printing for accurate navigation of these tumors. Desktop 3D printing was used to fabricate patient-specific 3D printed molds to ensure that the distal extremity is in the same position both in preoperative images and during image-guided surgery (IGS). The feasibility of the proposed workflow was evaluated in two clinical cases (soft-tissue sarcomas in hand and foot). The validation involved deformation analysis of the 3D-printed mold after sterilization, accuracy of the system in patient-specific 3D-printed phantoms, ...
3D Printing in Medicine; Application in Intracranial Tumours in Southern Nigeria
Journal of advances in medicine and medical research, 2022
Background: The pituitary gland is a small bean-shaped gland situated at the base of the brain. Pituitary-based tumors are neuroendocrine tumours affecting the pituitary gland. Imaging of the pituitary gland involves the use of computed tomography and magnetic resonance imaging. 3D reconstruction of data from CT images can be converted into 3D and then made into a live anatomical model using a 3D printer. The objective and aim of this study are to demonstrate that findings from CT scan images can be used to generate 3D printed specific models for patients and clinicians. Methods: Patient-specific models for three clinical cases were segmented using a segmentation application to isolate the mass and the bone. The process involved image acquisition from a cross-sectional imaging to segmentation of the acquired DICOM image into a 3D model followed by file and model correction for final print, this is then followed on to slicing with the selection of 3D printing material as well as appropriate settings, this is then concluded with the actual print, print accuracy, and cost analysis. Results: Segmentation of the region of interest took about 45 to 90 minutes with the majority of the Original Research Article
The Annals of thoracic surgery, 2016
Three-dimensional (3D) printing of anatomic models for complex surgical cases improves patient and resident education, operative team planning, and guides the operation. Our group describes two additional dimensions. The process of 5-dimensional (5D) printing was developed for surgical planning. Pretreatment computed tomography and positron emission tomography scans were reformatted and fused. Selected anatomy from these studies, along with posttreatment computed tomography and magnetic resonance images, were coregistered and segmented. This fused anatomy was converted into stereolithography files for 3D printing. A patient presenting with a complex thoracic tumor was selected for 5D printing. 3D and 5D models were prepared to allow surgical teams to directly evaluate and compare the added benefits of information provided by printing in 5 dimensions. Printing 5D models in patients with complex thoracic pathology facilitates surgical planning, selecting margins for resection, anticip...