scholarly journals Development of patient specific, realistic, and reusable video assisted thoracoscopic surgery simulator using 3D printing and pediatric computed tomography images

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dayeong Hong ◽  
HaeKang Kim ◽  
Taehun Kim ◽  
Yong-Hee Kim ◽  
Namkug Kim
Keyword(s):  
Computed Tomography ◽  
Mechanical Properties ◽  
Fused Deposition Modeling ◽  
Thoracoscopic Surgery ◽  
Clinical Situation ◽  
Patient Specific ◽  
Fused Deposition ◽  
Video Assisted ◽  
Computed Tomography Images ◽  
Video Assisted Thoracoscopic Surgery

AbstractHerein, realistic and reusable phantoms for simulation of pediatric lung video-assisted thoracoscopic surgery (VATS) were proposed and evaluated. 3D-printed phantoms for VATS were designed based on chest computed tomography (CT) data of a pediatric patient with esophageal atresia and tracheoesophageal fistula. Models reflecting the patient-specific structure were fabricated based on the CT images. Appropriate reusable design, realistic mechanical properties with various material types, and 3D printers (fused deposition modeling (FDM) and PolyJet printers) were used to represent the realistic anatomical structures. As a result, the phantom printed by PolyJet reflected closer mechanical properties than those of the FDM phantom. Accuracies (mean difference ± 95 confidence interval) of phantoms by FDM and PolyJet were 0.53 ± 0.46 and 0.98 ± 0.55 mm, respectively. Phantoms were used by surgeons for VATS training, which is considered more reflective of the clinical situation than the conventional simulation phantom. In conclusion, the patient-specific, realistic, and reusable VATS phantom provides a better understanding the complex anatomical structure of a patient and could be used as an educational phantom for esophageal structure replacement in VATS.

scholarly journals Effect of Porosity on Mechanical Properties of 3D Printed Polymers: Experiments and Micromechanical Modeling Based on X-Ray Computed Tomography Analysis

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1154 ◽  
Author(s):  
Wang ◽  
Zhao ◽  
Fuh ◽  
Lee
Keyword(s):  
Computed Tomography ◽  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Fused Deposition Modeling ◽  
Micromechanical Model ◽  
Micromechanical Modeling ◽  
X Ray ◽  
Fused Deposition ◽  
3D Printed ◽  
X Ray Computed

Additive manufacturing (commonly known as 3D printing) is defined as a family of technologies that deposit and consolidate materials to create a 3D object as opposed to subtractive manufacturing methodologies. Fused deposition modeling (FDM), one of the most popular additive manufacturing techniques, has demonstrated extensive applications in various industries such as medical prosthetics, automotive, and aeronautics. As a thermal process, FDM may introduce internal voids and pores into the fabricated thermoplastics, giving rise to potential reduction on the mechanical properties. This paper aims to investigate the effects of the microscopic pores on the mechanical properties of material fabricated by the FDM process via experiments and micromechanical modeling. More specifically, the three-dimensional microscopic details of the internal pores, such as size, shape, density, and spatial location were quantitatively characterized by X-ray computed tomography (XCT) and, subsequently, experiments were conducted to characterize the mechanical properties of the material. Based on the microscopic details of the pores characterized by XCT, a micromechanical model was proposed to predict the mechanical properties of the material as a function of the porosity (ratio of total volume of the pores over total volume of the material). The prediction results of the mechanical properties were found to be in agreement with the experimental data as well as the existing works. The proposed micromechanical model allows the future designers to predict the elastic properties of the 3D printed material based on the porosity from XCT results. This provides a possibility of saving the experimental cost on destructive testing.

scholarly journals Lymphangioleiomyomatosis Unusual Cause of Spontaneous Pneumothorax

2021 ◽  
Vol 11 (6) ◽  
pp. 226-230
Author(s):  
Lamya Al Aamri ◽  
Raafat Dahrouj ◽  
Nasser Al Awaid
Keyword(s):  
Tuberous Sclerosis ◽  
Tuberous Sclerosis Complex ◽  
Thoracoscopic Surgery ◽  
Inherited Disease ◽  
Multisystem Disease ◽  
Video Assisted ◽  
Computed Tomography Images ◽  
Pulmonary Lymphangioleiomyomatosis ◽  
Premenopausal Female ◽  
Video Assisted Thoracoscopic Surgery

Lymphangioleiomyomatosis (LAM) is a rare multisystem disease, predominately affect premenopausal female. LAM could be an inherited disease associated with Tuberous Sclerosis Complex syndrome or sporadic. Most common pulmonary symptoms are dyspnea and pneumothorax. We report 31- year female, presented with right-side pneumothorax chest drainage was inserted. Further investigation revealed multiple cystic lesions in chest computed tomography images suggestive of LAM disease. She underwent video-assisted thoracoscopic surgery (VATs) to obtain a lung biopsy. Histopathology lung tissue confirms pulmonary Lymphangioleiomyomatosis. Key words: Lymphangioleiomyomatosis; Tuberous Sclerosis Complex syndrome; video-assisted thoracoscopic surgery.

scholarly journals Pulmonary nodule localization guided by computed tomography using a nitinol guidewire before video-assisted thoracoscopic surgery

2019 ◽  
Vol 52 (4) ◽  
pp. 242-244
Author(s):  
Tiago Kojun Tibana ◽  
Tony Rocha de Carvalho ◽  
Adalberto Arão Filho ◽  
Edson Marchiori ◽  
Thiago Franchi Nunes
Keyword(s):  
Computed Tomography ◽  
Pulmonary Nodule ◽  
Thoracoscopic Surgery ◽  
Video Assisted ◽  
Video Assisted Thoracoscopic Surgery
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