scholarly journals Multimaterial and multicolor 3D-printed model in training of transnasal endoscopic surgery for pituitary adenoma

2019 ◽  
Vol 47 (6) ◽  
pp. E21
Author(s):  
Jia-Ping Zheng ◽  
Chu-Zhong Li ◽  
Guo-Qiang Chen
Keyword(s):  
Pituitary Adenoma ◽  
Surgical Training ◽  
Endoscopic Surgery ◽  
Preoperative Planning ◽  
Anatomical Structures ◽  
Vidian Nerve ◽  
Anatomical Teaching ◽  
Neuroimaging Data ◽  
3D Printed ◽  
Transnasal Endoscopic Surgery

OBJECTIVEThe aim of the present study was to investigate the practical value of a multimaterial and multicolor 3D-printed model in anatomical teaching, surgical training, and preoperative planning of transnasal endoscopic surgery for pituitary adenoma.METHODSMultimodality neuroimaging data were obtained in a 42-year-old healthy male volunteer and a 40-year-old female patient with an invasive nonfunctional pituitary adenoma. Three 3D-printed models were produced: a monomaterial and monocolor model, a monomaterial and multicolor model, and a multimaterial and multicolor model. The effects on anatomical teaching and surgical training for exposing the vidian nerve were assessed by 12 residents, and the training effect was validated on cadavers. The practical values for preoperative planning were evaluated by 6 experienced neurosurgeons. All evaluations were based on 5-point Likert questionnaires.RESULTSThe multimaterial and multicolor model was superior to the monomaterial models in surgical training for exposing the vidian nerve (Fisher test; p < 0.05). In addition, the multimaterial and multicolor model was superior to the monomaterial models in anatomical teaching and preoperative planning (Friedman test; p < 0.05).CONCLUSIONSMultimaterial and multicolor 3D printing technology makes it convenient and efficient to produce a practical model for simulating individualized and complex anatomical structures in the sellar region. Furthermore, the multimaterial model can provide a more realistic manipulative experience for surgical training and facilitate the preoperative planning.

scholarly journals Complications caused by excessive hemostatic tamponade in the removed tumor area in transnasal endoscopic surgery of pituitary adenoma

2020 ◽  
Vol 22 (1) ◽  
pp. 21-30
Author(s):  
D. N. Andreev ◽  
M. A. Kutin ◽  
P. L. Kalinin ◽  
A. N. Shkarubo ◽  
B. A. Kadashev ◽  
...  
Keyword(s):  
Pituitary Adenoma ◽  
Medical Research ◽  
Endoscopic Surgery ◽  
Neurological Disorders ◽  
World Literature ◽  
Mass Effect ◽  
Neurological Status ◽  
National Medical ◽  
Transnasal Endoscopic Surgery ◽  
Tumor Area

The phenomena of the mass effect of hemostatic material in the removed tumor area without the presence of a hematoma that causes or worsens the patient’s neurological status after surgery are difficult to diagnose and, with untimely help, causes irreversible neurological disorders. In world literature, we have found isolated sources describing similar complications. In the article, we present 7 clinical cases recorded from 2005 to 2019 in N. N. Burdenko National Medical Research Center of Neurosurgery and own experience in solving these difficult problems.

Isolated sphenoethmoid recess poiyps

1998 ◽  
Vol 112 (7) ◽  
pp. 660-663 ◽  
Author(s):  
Dharambir S. Sethi ◽  
David P. C. Lau ◽  
Lincoln W. J. Chee ◽  
Vincent Chong
Keyword(s):  
Computed Tomography ◽  
Pituitary Adenoma ◽  
Magnetic Resonance ◽  
Mr Imaging ◽  
Endoscopic Surgery ◽  
Inflammatory Disease ◽  
Sphenoid Sinus ◽  
The Other ◽  
Ectopic Pituitary Adenoma ◽  
Transnasal Endoscopic Surgery

AbstractIsolated sphenoethmoid recess (SER) polyps are rare. They usually arise from the sphenoid sinus. We report six patients with SER polyps as the only abnormal clinical finding at initial presentation. All cases were investigated with outpatient biopsy and computed tomography (CT) or magnetic resonance (MR) imaging. Pre-operative histology revealed three cases of inflammatory disease, two cases with inverted papilloma, and one case of an ectopic pituitary adenoma arising from the sphenoid sinus. One of the inflammatory polyps arose directly from the mucosa around the sphenoid ostium. The other five cases involved the sphenoid sinus. Except for the ectopic pituitary adenoma all the polyps were managed by transnasal endoscopic surgery. We emphasize that isolated SER polyps may signify existing sphenoid pathology and a pre-operative biopsy is valuable for planning surgery.

scholarly journals Transnasal endoscopic surgery of sphenoid meningocele associated with pituitary adenoma. A case report

2021 ◽  
Author(s):  
Vlastimil Novak ◽  
Lumir Hrabalek ◽  
Jiri Hoza ◽  
Lucie Tuckova ◽  
Daniel Pohlodek
Keyword(s):  
Case Report ◽  
Pituitary Adenoma ◽  
Endoscopic Surgery ◽  
Transnasal Endoscopic Surgery

CLINICAL SIGNIFICANCE OF TRANSNASAL ENDOSCOPIC SURGERY IN THE TREATMENT OF CHILDREN WITH LOCALIZED PARAMENINGEAL SARCOMAS

2017 ◽  
Vol 4 (3) ◽  
pp. 214-225
Author(s):  
O. A. Merkulov ◽  
T. V. Gorbunova ◽  
D. A. Buletov ◽  
V. G. Polyakov
Keyword(s):  
Clinical Significance ◽  
Endoscopic Surgery ◽  
Transnasal Endoscopic Surgery

scholarly journals 3D-printed models for periacetabular osteotomy surgical planning

2021 ◽  
Author(s):  
B Keegan Markhardt ◽  
Matthew A Beilfuss ◽  
Scott J Hetzel ◽  
David C Goodspeed ◽  
Andrea M Spiker
Keyword(s):  
Radiation Dose ◽  
Blood Loss ◽  
Surgical Planning ◽  
Preoperative Planning ◽  
Periacetabular Osteotomy ◽  
Total Blood Loss ◽  
Preoperative Imaging ◽  
Total Blood ◽  
Patient Age ◽  
3D Printed

Abstract The purpose of this study was to determine the feasibility and clinical benefits of using 3D-printed hemipelvis models for periacetabular osteotomy preoperative planning in the treatment of hip dysplasia. This retrospective study included 28 consecutive cases in 26 patients, with two bilateral cases, who underwent periacetabular osteotomy between January 2017 and February 2020 and had routine radiographs, CT and MR imaging. Of these, 14 cases [mean patient age 30.7 (SD 8.4) years, 11 female] had routine preoperative imaging, and 14 cases [mean patient age 28.0 (SD 8.7) years, 13 female] had routine preoperative imaging and creation of a full-scale 3D-printed hemipelvis model from the CT data. The expected surgical cuts were performed on the 3D-printed models. All patients underwent Bernese periacetabular osteotomy. Operative times, including time to achieve proper acetabular position and total periacetabular osteotomy time, fluoroscopy radiation dose and estimated total blood loss were compiled. ANOVA compared outcome variables between the two patient groups, controlling for possible confounders. On average, patients who had additional preoperative planning using the 3D-printed model had a 5.5-min reduction in time to achieve proper acetabular position and a 14.5-min reduction in total periacetabular osteotomy time; however, these changes were not statistically significant (P = 0.526 and 0.151, respectively). No significant difference was identified in fluoroscopy radiation dose or total blood loss. Detailed surgical planning for periacetabular osteotomy using 3D-printed models is feasible using widely available and affordable technology and shows promise to improve surgical efficiency.

scholarly journals Regional education on endoscopic surgery using a teleconference system with high-quality video via the internet: Saga surgical videoconferences

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Tatsuya Manabe ◽  
Mitsuhiro Takasaki ◽  
Takao Ide ◽  
Kenji Kitahara ◽  
Seiji Sato ◽  
...  
Keyword(s):  
Endoscopic Surgery ◽  
Educational System ◽  
High Speed ◽  
The Internet ◽  
Web Conferencing ◽  
High Quality ◽  
Anatomical Structures ◽  
Quality Video ◽  
High Quality Video ◽  
Conferencing System

Abstract Background Effective education about endoscopic surgery (ES) is greatly needed for unskilled surgeons, especially at low-volume institutions, to maintain the safety of patients. We have tried to establish the remote educational system using videoconference system through the internet for education about ES to surgeons belonging to affiliate institutions. The aim of this manuscript was to report the potential to establish a comfortable remote educational system and to debate its advantages. Methods We established a local remote educational conference system by combining the use of a general web conferencing system and a synchronized remote video playback system with annotation function through a high-speed internet. Results During 2014–2019, we conducted 14 videoconferences to review and improve surgeons’ skills in performing ES at affiliated institutions. At these conferences, while an uncut video of ES that had been performed at one of the affiliated institutions was shown, the surgical procedure was discussed frankly, and expert surgeons advised improvements. The annotation system is useful for easy, prompt recognition among the audience regarding anatomical structures and procedures that are difficult to explain verbally. Conclusions This system is of low initial cost and offers easy participation and high-quality videos. It would therefore be a useful tool for regional ES education.

scholarly journals Validation study of 3D-printed anatomical models using 2 PLA printers for preoperative planning in trauma surgery, a human cadaver study

2018 ◽  
Vol 45 (6) ◽  
pp. 1013-1020 ◽  
Author(s):  
Lars Brouwers ◽  
Arno Teutelink ◽  
Fiek A. J. B. van Tilborg ◽  
Mariska A. C. de Jongh ◽  
Koen W. W. Lansink ◽  
...  
Keyword(s):  
Validation Study ◽  
Preoperative Planning ◽  
Trauma Surgery ◽  
Cadaver Study ◽  
Human Cadaver ◽  
Anatomical Models ◽  
3D Printed ◽  
Human Cadaver Study

On the suitability of Thiel cadavers for natural orifice transluminal endoscopic surgery (NOTES): surgical training, feasibility studies, and anatomical education

2014 ◽  
Vol 29 (3) ◽  
pp. 737-746 ◽  
Author(s):  
Andrea Porzionato ◽  
Lino Polese ◽  
Emanuele Lezoche ◽  
Veronica Macchi ◽  
Giovanni Lezoche ◽  
...  
Keyword(s):  
Surgical Training ◽  
Endoscopic Surgery ◽  
Feasibility Studies ◽  
Natural Orifice

scholarly journals Biomaterials – Novel Advances in Nasal Medical Implants, 3D Printing Applications

2021 ◽  
pp. 52-64
Author(s):  
T. M. Amulya ◽  
K. G. Siree ◽  
T. M. Pramod Kumar ◽  
M. B. Bharathi ◽  
K. Divith ◽  
...  
Keyword(s):  
3D Printing ◽  
Tissue Loss ◽  
Medical Implants ◽  
Anatomical Structures ◽  
Regulatory Aspects ◽  
3D Printed ◽  
Targeting Ability ◽  
Soft Tissue Loss ◽  
Biodegradable Biomaterials ◽  
High Degree

The scope and applications of biomaterials have spread out throughout a broad spectrum. Particularly in pharmacy, biomaterials are an attractive choice because they can be modified to decrease toxicity, increase the targeting ability among many other aspects of drug delivery. Extensive studies have led to the development of many metal-based, ceramic, biocompatible and biodegradable biomaterials for medical purposes among many others. The utilization of 3D printing in this discipline is a very novel research subject with infinite potential. Personalized and customized nasal implants are a great option to increase patient compliance and 3D printed accurate anatomical structures are rendered to be effective tools of learning. One of the disadvantages of biomaterial-based implants is the formation of a thick fibrous capsule formation around the implant, others being breakage, soft tissue loss and so on. Regulatory aspects are less explored for nasal implants. 3D printing is a unique technique that allows for a high degree of customisation in pharmacy, dentistry and in designing of medical devices. Current research in 3D printing indicates towards reproducing an organ in the form of a chip; paving the way for more studies and opportunities to perfecting the existing technique.

3D Printing of Medical Models: A Literature Review

2017 ◽  
Author(s):  
Xingjian Wei ◽  
Li Zeng ◽  
Zhijian Pei
Keyword(s):  
3D Printing ◽  
Literature Review ◽  
Medical Curriculum ◽  
Industrial Applications ◽  
Physical Models ◽  
Research Directions ◽  
Anatomical Structures ◽  
Medical Models ◽  
3D Printed ◽  
Anatomy Teaching

Medical models are physical models of human or animal anatomical structures such as skull and heart. Such models are used in simulation and planning of complex surgeries. They can also be utilized for anatomy teaching in medical curriculum. Traditionally, medical models are fabricated by paraffin wax or silicone casting. However, this method is time-consuming, of low quality, and not suitable for personalization. Recently, 3D printing technologies are used to fabricate medical models. Various applications of 3D printed medical models in surgeries and anatomy teaching have been reported, and their advantages over traditional medical models have been well-documented. However, 3D printing of medical models bears some special challenges compared to industrial applications of 3D printing. This paper reviews more than 50 publications on 3D printing of medical models between 2006 and 2016, and discusses knowledge gaps and potential research directions in this field.

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