Advantage Of Intraoperative Guidance By Preoperative CT Angiogram Fusion In Endovascular Aortic Repair
Masato Hayakawa, Shizuko Iwasa, Hiroyuki Tsukui.
Hokkaido Cardiovascular Hospital, Sapporo City, Japan.
OBJECTIVE: To evaluate advantages of preoperative CT angiography (CTA) image fusion with live fluoroscopy during endovascular aortic repair.
METHODS: From February to July 2016, 3 procedures (TEVAR: 1, EVAR: 2) were performed in standard angiography room without CTA fusion (Group NF). After August 2016, 8 procedures (TEVAR: 2, EVAR: 6) were performed using CTA fusion with live fluoroscopy (Discovery IGS 730; GE Healthcare, England) in a hybrid room (Group F). Procedure time, fluoroscopy time, radiation exposure, and dosage of contrast agent were compared between two groups.
RESULTS: All patients in both groups underwent endovascular aortic repair successfully. There were no significant differences between two groups (Group NF vs. Group F) in procedure time (66.7 + 5.8 minutes vs. 96.9 + 36.1 minutes, p=0.056), fluoroscopy time (13.03±2.95 minutes vs. 22.44±9.76 minutes, P=0.147), and radiation exposure (296.0 + 258.3 mGy vs. 345.3 + 209.6 mGy, p=0.766). However, dosage of contrast agent was significantly decreased in Group F (142.5 + 75.9 ml vs. 67.3 + 25.0 ml, p<0.05).
CONCLUSIONS: Preoperative CTA image fusion with live fluoroscopy is significantly reduced dosage of contrast agent for endovascular aortic repair.
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