Gianfelice D, Lepanto L, Perreault P, Chartrand-Lefebvre C, Milette P C
Department of Diagnostic Radiology, Centre hospitalier de l'Université de Montréal, Hôpital Saint-Luc, Quebec, Canada.
J Vasc Interv Radiol. 2000 Oct;11(9):1217-21. doi: 10.1016/s1051-0443(07)61367-0.
To assess if the learning process associated with computed tomography fluoroscopy (CTF) technology influences procedure and fluoroscopy times for percutaneous biopsy procedures.
Prospective analysis of the initial 250 consecutive patients who underwent percutaneous biopsy with use of a CT scanner equipped with rapid image reconstruction and fluoroscopic capabilities in a 24-month period. All procedures were performed with both continuous and spot fluoroscopic technique, with typical radiation parameters of 50 mA, 120 kV, and a 10-mm-slice thickness. The procedures were all performed by a single experienced interventional radiologist to limit the variables of physician expertise, interventional materials used, and biopsy approach. The subject group was divided into five equal consecutive groups of 50 patients. In each subgroup, the authors recorded mean lesion size, success, and complication rates, as well as mean procedure and fluoroscopy times.
The five subgroups were similar patient populations as documented by the absence of statistically significant differences when comparing mean lesion size, procedure success, and complication rates (P > .05; ANOVA test). A statistically significant decrease in mean fluoroscopy (groups 1-5: 50.26 vs 45.24 vs 33.86 vs 32.68 vs 25.8 sec/patient) and mean procedure times (groups 1-5: 30.08 vs 27.9 vs 26.34 vs 25.6 vs 21.6 min/patient) was recorded between the patient subgroups (P < .0001; ANOVA test).
The learning process associated with CTF technology impacts procedure parameters by decreasing both mean procedure and fluoroscopy times, thereby increasing patient turnover and decreasing radiation exposure to the patient and the operator.
评估与计算机断层扫描透视（CTF）技术相关的学习过程是否会影响经皮活检手术的操作时间和透视时间。
对在24个月期间使用配备快速图像重建和透视功能的CT扫描仪进行经皮活检的连续250例初诊患者进行前瞻性分析。所有手术均采用连续透视和点透视技术，典型的辐射参数为50 mA、120 kV和10 mm层厚。所有手术均由一名经验丰富的介入放射科医生进行，以限制医生专业知识、所用介入材料和活检方法等变量。研究对象分为连续五组，每组50例患者。在每个亚组中，作者记录了平均病变大小、成功率和并发症发生率，以及平均操作时间和透视时间。
五个亚组的患者群体相似，比较平均病变大小、手术成功率和并发症发生率时无统计学显著差异（P > .05；方差分析检验）。在患者亚组之间记录到平均透视时间（第1 - 5组：50.26 vs 45.24 vs 33.86 vs 32.68 vs 25.8秒/患者）和平均操作时间（第1 - 5组：30.08 vs 27.9 vs 26.34 vs 25.6 vs 21.6分钟/患者）有统计学显著下降（P < .0001；方差分析检验）。
与CTF技术相关的学习过程通过缩短平均操作时间和透视时间来影响手术参数，从而增加患者周转率并减少患者和操作者的辐射暴露。
