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Novel Resectable Myocardial Model Using Hybrid Three-Dimensional Printing and Silicone Molding for Mock Myectomy for Apical Hypertrophic Cardiomyopathy

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Abstract
Objective: We implemented a novel resectable myocardial model for mock myectomy using a hybrid method of threedimensional (3D) printing and silicone molding for patients with apical hypertrophic cardiomyopathy (ApHCM). Materials and Methods: From January 2019 through May 2020, 3D models from three patients with ApHCM were generated using the end-diastolic cardiac CT phase image. After computer-aided designing of measures to prevent structural deformation during silicone injection into molding, 3D printing was performed to reproduce anatomic details and molds for the left ventricular (LV) myocardial mass. We compared the myocardial thickness of each cardiac segment and the LV myocardial mass and cavity volumes between the myocardial model images and cardiac CT images. The surgeon performed mock surgery, and we compared the volume and weight of the resected silicone and myocardium. Results: During the mock surgery, the surgeon could determine an ideal site for the incision and the optimal extent of myocardial resection. The mean differences in the measured myocardial thickness of the model (0.3, 1.0, 6.9, and 7.3 mm in the basal, midventricular, apical segments, and apex, respectively) and volume of the LV myocardial mass and chamber (36.9 mL and 14.8 mL, 2.9 mL and-9.4 mL, and 6.0 mL and-3.0 mL in basal, mid-ventricular and apical segments, respectively) were consistent with cardiac CT. The volume and weight of the resected silicone were similar to those of the resected myocardium (6 mL [6.2 g] of silicone and 5 mL [5.3 g] of the myocardium in patient 2; 12 mL [12.5 g] of silicone and 11.2 mL [11.8 g] of the myocardium in patient 3). Conclusion: Our 3D model created using hybrid 3D printing and silicone molding may be useful for determining the extent of surgery and planning surgery guided by a rehearsal platform for ApHCM.
Author(s)
김우일임민제장유정구현정강준원정성호양동현
Issued Date
2021
Type
Article
Keyword
Apical hypertrophic cardiomyopathyMock surgerySilicone moldingThree-dimensional(3D) printingTransapical myectomy
DOI
10.3348/kjr.2020.1164
URI
https://oak.ulsan.ac.kr/handle/2021.oak/8013
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_nrf_kci_oai_kci_go_kr_ARTI_9798756&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Novel%20Resectable%20Myocardial%20Model%20Using%20Hybrid%20Three-Dimensional%20Printing%20and%20Silicone%20Molding%20for%20Mock%20Myectomy%20for%20Apical%20Hypertrophic%20Cardiomyopathy&offset=0&pcAvailability=true
Publisher
KOREAN JOURNAL OF RADIOLOGY
Location
대한민국
Language
영어
ISSN
1229-6929
Citation Volume
22
Citation Number
7
Citation Start Page
1054
Citation End Page
1065
Appears in Collections:
Medicine > Medicine
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