Efficacy of Automated Supplying Artery Tracking Software Using Multidetector-Row Computed Tomography Images for Emergent Transcatheter Arterial Embolization

摘要

Purpose To assess the reliability of a prototype automated supplying artery tracking software (ASATS) using multidetector-row CT (MDCT) images in emergent TAE. Materials and Methods Consecutive 53 patients underwent 57 sessions of emergent TAE during 7?months. Twenty-one cases were excluded due to a lack of CT data ( n ?=?12) or negative angiographic findings ( n ?=?9). Remaining 34 sessions of TAE and MDCT images in 32 patients (mean age 62.9?years; age range 37–92?years) were enrolled. ASATS was retrospectively conducted for the identification of supplying arteries which were confirmed with angiography (automated method). Manual modification was added as needed (semi-automated method). Two observers independently reviewed the MDCT images to detect supplying arteries (manual method). Detectability of supplying artery and time to analysis were compared among the automated, semi-automated, and manual methods by both observers. Results A total of 64 bleeding sites were demonstrated on angiography. The detectability was 28 (43.8%) for automated method, 53 (82.8%) for semi-automated method, 55 (85.9%) for observer 1, and 58 (90.6%) for observer 2. Detectability of semi-automated method was significantly better than of automated method ( P ?=?0.000) and comparable with manual method by both observers ( P ?=?0.193 and 0.081). Average time to analysis was 185.4?s for automated method, 297.2?s for semi-automated method, 186.2?s for observer 1, and 243.7?s for observer 2. Conclusion ASATS has a sufficient ability to identify supplying arteries of bleeding by adding manual modification as needed and can be used for emergent TAE. Level of Evidence Level 4, Case Control Study.