使用放射性色（Gafchromic）胶片评估腹盆部栓塞期间患者的皮肤峰值剂量。

Assessment of patient's peak skin dose during abdominopelvic embolization using radiochromic (Gafchromic) films.

机构信息

EA 2415, department of radiology, Nîmes university hospital, medical imaging group Nîmes, CHU de Nîmes, boulevard Prof. Robert-Debré, 30029 Nîmes cedex, France.

出版信息

Diagn Interv Imaging. 2018 May;99(5):321-329. doi: 10.1016/j.diii.2017.12.008. Epub 2018 Feb 1.

DOI:10.1016/j.diii.2017.12.008

PMID:29396087

Abstract

PURPOSE

To assess the value of the routine use of radiochromic films in abdominopelvic embolization procedures to improve patient follow-up.

METHODS

A total of 55 patients who underwent transcatheter abdominopelvic embolization were prospectively included. Six types of procedures were evaluated including hepatic chemoembolization (HCE), gonadal veins embolization (GVE), uterine elective embolization (UEE), uterine urgent embolization (UUE), abdominal elective embolization (AEE), and abdominal urgent embolization (AUE). Dosimetric indicators (DIs) such as air-kerma (AK) and kerma-area-product (KAP) were collected and peak skin dose (PSD) was measured with radiochromic films. Correlations between PSD and DIs were searched for.

RESULTS

The mean (±standard deviation [SD]) PSD for the various procedures were: 1033±502 mGy for HCE; 476±271 mGy for GVE; 460±171 mGy for UEE; 531±263 mGy for UUE; 708±896 mGy for AEE; 683±392 mGy for AUE. Strong correlations were observed between PSD and DIs (r=0.974 for AK and r=0.925 for KAP). PSD was>2Gy in one procedure and all procedures (7/132) procedures resulted in AK>2Gy, mostly for HCE and AEE.

CONCLUSION

Dosimetry using radiochromic film is only appropriate for HCE, AEE and AUE, whereas dose-mapping systems present a more suitable solution for all embolizations including those with AK that occasionally exceed 2Gy.

摘要

目的

评估放射性色带胶片在腹盆动脉栓塞术中的常规使用价值，以改善患者随访。

方法

前瞻性纳入 55 例接受经导管腹盆动脉栓塞术的患者。评估了六种类型的手术，包括肝化疗栓塞术（HCE）、性腺静脉栓塞术（GVE）、子宫择期栓塞术（UEE）、子宫紧急栓塞术（UUE）、腹部择期栓塞术（AEE）和腹部紧急栓塞术（AUE）。收集空气比释动能（AK）和比释动能面积乘积（KAP）等剂量学指标（DI），并用放射性色带胶片测量峰值皮肤剂量（PSD）。寻找 PSD 与 DI 之间的相关性。

结果

各种手术的平均（±标准差[SD]）PSD 分别为：HCE 为 1033±502 mGy；GVE 为 476±271 mGy；UEE 为 460±171 mGy；UUE 为 531±263 mGy；AEE 为 708±896 mGy；AUE 为 683±392 mGy。PSD 与 DI 之间存在很强的相关性（AK 为 r=0.974，KAP 为 r=0.925）。一次手术 PSD>2Gy，所有手术（7/132）均导致 AK>2Gy，主要发生在 HCE 和 AEE 中。