Koch Vitali, Loos Gerald, Gruenewald Leon D, Eichler Katrin, Booz Christian, D'Angelo Tommaso, Yel Ibrahim, Mahmoudi Scherwin, Martin Simon S, Harth Marc, Albrecht Moritz H, Zangos Stephan, Bernatz Simon, Thalhammer Axel, Scholtz Jan-Erik, Vogl Thomas J, Gruber-Rouh Tatjana
Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Frankfurt am Main, Germany.
Department of Biomedical Sciences and Morphological and Functional Imaging, University Hospital Messina, Messina, Italy.
Eur J Radiol Open. 2022 Jun 16;9:100427. doi: 10.1016/j.ejro.2022.100427. eCollection 2022.
To assess the diagnostic precision of three different workstations for measuring thoracic aortic aneurysms (TAAs) in vivo and ex vivo using either pre-interventional computed tomography angiography scans (CTA) or a specifically designed phantom model.
This retrospective study included 23 patients with confirmed TAA on routinely performed CTAs. In addition to phantom tube diameters, one experienced blinded radiologist evaluated the dimensions of TAAs on three different workstations in two separate rounds. Precision was assessed by calculating measurement errors. In addition, correlation analysis was performed using Pearson correlation.
Measurements acquired at the Siemens workstation deviated by 3.54% (range, 2.78-4.03%; = 0.14) from the true size, those at General Electric by 4.05% (range, 1.46-7.09%; < 0.0001), and at TeraRecon by 4.86% (range, 3.22-6.45%; < 0.0001). Accordingly, Siemens provided the most precise workstation at simultaneously most fluctuating values (scattering of 4.46%). TeraRecon had the smallest fluctuation (scattering of 2.83%), but the largest deviation from the true size of the phantom. The workstation from General Electric showed a scattering of 2.94%. The highest overall correlation between the 1st and 2nd rounds was observed with measurements from Siemens (r = 0.898), followed by TeraRecon (r = 0.799), and General Electric (r = 0.703). Repetition of measurements reduced processing times by 40% when using General Electric, by 20% with Siemens, and by 18% with TeraRecon.
In conclusion, all three workstations facilitated precise assessment of dimensions in the majority of cases at simultaneously high reproducibility, ensuring accurate pre-interventional planning of thoracic endovascular aortic repair.
使用介入前计算机断层血管造影扫描（CTA）或专门设计的体模模型，评估三种不同工作站在体内和体外测量胸主动脉瘤（TAA）的诊断精度。
这项回顾性研究纳入了23例在常规CTA检查中确诊为TAA的患者。除了体模管直径外，一名经验丰富的盲法放射科医生在两个不同的回合中，在三个不同的工作站上评估TAA的尺寸。通过计算测量误差来评估精度。此外，使用Pearson相关性进行相关性分析。
在西门子工作站获得的测量值与真实尺寸的偏差为3.54%（范围为2.78 - 4.03%；P = 0.14），在通用电气工作站为4.05%（范围为1.46 - 7.09%；P < 0.0001），在TeraRecon工作站为4.86%（范围为3.22 - 6.45%；P < 0.0001）。因此，西门子提供了最精确的工作站，同时测量值波动最大（离散度为4.46%）。TeraRecon的波动最小（离散度为2.83%），但与体模真实尺寸的偏差最大。通用电气的工作站离散度为2.94%。第一轮和第二轮测量之间的总体相关性最高的是西门子的测量值（r = 0.898），其次是TeraRecon（r = 0.799），通用电气（r = 0.703）。使用通用电气时，重复测量使处理时间减少了40%，使用西门子时减少了20%，使用TeraRecon时减少了18%。
总之，所有三个工作站在大多数情况下都有助于精确评估尺寸，同时具有高再现性，确保了胸主动脉腔内修复术前的准确规划。
