Low-dose cone-beam CT for gastric volumetry in endoscopic sleeve gastroplasty.

IF 3.6 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Ilaria Nacci, Roberto Moretti, Andrea Morasca, Valerio Pontecorvi, Cristiano Spada, Evis Sala, Ivo Boškoski
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引用次数: 0

Abstract

The study aimed to evaluate the feasibility of using cone-beam computed tomography (CBCT) for gastric volume assessment before and after endoscopic sleeve gastroplasty (ESG), focusing on patient radiation dose. Ten patients scheduled for ESG were prospectively enrolled. Each patient underwent three CBCT scans under anesthesia: two scans following CO2 insufflation of the gastric lumen-one pre-ESG and one post-ESG-and a third scan post-ESG after gastric distension with Gastrografin. Image quality was evaluated for its adequacy in generating three-dimensional reconstructions and calculating gastric volumes. Dose-area product was recorded for each scan and used to estimate the effective dose (ED) via Monte Carlo simulations using the PCXMC rotational model. Although image quality did not match conventional computed tomography (CT), it was sufficient for three-dimensional reconstruction and gastric volume measurements. The median ED was 4.2 mSv for pre-ESG scans with CO2 insufflation, 4.2 mSv for post-ESG scans with CO2 insufflation, and 4.8 mSv for post-ESG scans with Gastrografin. CBCT provided satisfactory image quality for gastric volumetry at relatively low radiation doses, with ED being approximately 50% of that of conventional CT. This preliminary feasibility study suggests that CBCT could be a useful tool for planning ESG and assessing post-procedural outcomes. RELEVANCE STATEMENT: Low-dose CBCT provided sufficient image quality for gastric volumetry in a small cohort of patients undergoing ESG, reducing radiation exposure by approximately 50% compared to conventional CT. This investigational technique enables seamless intraoperative imaging that could improve planning and evaluation of endoscopic bariatric procedures. KEY POINTS: CBCT allowed gastric volumetric assessment at a relatively low radiation dose. Scans with CO2 insufflation delivered lower radiation doses than scans with Gastrografin. Scans with CO2 insufflation showed superior image quality compared to scans with Gastrografin. CBCT could be a valuable tool for planning ESG and evaluating outcomes.

本研究旨在评估锥束计算机断层扫描(CBCT)在内镜下套管胃成形术(ESG)前后胃容量评估的可行性,重点关注患者的辐射剂量。前瞻性纳入10例计划进行ESG的患者。每位患者在麻醉下进行了三次CBCT扫描:两次扫描是在胃腔内注入二氧化碳后进行的,一次是在esg前,一次是在esg后,第三次扫描是在胃膨松素胃膨胀后进行的。评估图像质量是否足以产生三维重建和计算胃体积。记录每次扫描的剂量面积积,并使用PCXMC旋转模型通过蒙特卡罗模拟估计有效剂量(ED)。虽然图像质量与传统的计算机断层扫描(CT)不匹配,但它足以用于三维重建和胃体积测量。esg前扫描加CO2注入的中位ED为4.2 mSv, esg后扫描加CO2注入的中位ED为4.2 mSv, esg后扫描加Gastrografin的中位ED为4.8 mSv。在相对较低的辐射剂量下,CBCT为胃容量测量提供了令人满意的图像质量,ED约为常规CT的50%。这项初步的可行性研究表明,CBCT可能是规划ESG和评估手术后结果的有用工具。相关声明:在一小群接受ESG的患者中,低剂量CBCT为胃容量测量提供了足够的图像质量,与传统CT相比,减少了约50%的辐射暴露。这项研究技术使术中成像无缝,可以改善内窥镜减肥手术的计划和评估。重点:CBCT允许在相对低的辐射剂量下评估胃容量。与胃grafin扫描相比,CO2充气扫描的辐射剂量更低。与胃grafin扫描相比,CO2填充扫描显示出更好的图像质量。CBCT可能是规划ESG和评估结果的宝贵工具。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
European Radiology Experimental
European Radiology Experimental Medicine-Radiology, Nuclear Medicine and Imaging
CiteScore
6.70
自引率
2.60%
发文量
56
审稿时长
18 weeks
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