采用直接和间接测量方法评估孕妇腹部透视手术的皮肤剂量

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-09-05 DOI:10.1016/j.radphyschem.2025.113294

W.N.A.W. Ghazali, N.M. Noor, A.A. Zurihanaz, N.H.A. Rashid, M.S. Khaidzir, N. Shamshurim

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引用次数: 0

摘要

在复杂的介入放射（IR）过程中的辐射暴露通常很高，特别是在孕妇中。通过确定患者的峰值皮肤剂量（PSD）值来监测患者的术后状况是很重要的。然而，直接测量需要更长的时间来获得该值。本研究旨在通过直接和间接测量评估妊娠患者腹部手术期间PSD的准确性。使用热释光剂量计（TLDs）、Gafchromic LDV1薄膜和剂量监测软件（GE DoseWatch）进行PSD测量。采用20组tld和21 cm × 30 cm LDV1薄膜进行直接测量；贴在病人皮肤上，朝向x射线管。患者使用Philips Allura Xper FD20/15扫描仪进行腹部手术。使用GE DoseWatch实时模拟间接PSD测量。tld的PSD分布非常低，为290.23 mGy，偏差为15.11%，而LDV1 Film和GE Dosewatch的PSD值分别为341.88 mGy和345.44 mGy，误差为±1.03%。在红外中，PSD测量的不确定度约为±25%或更小。测定患者PSD值最准确的方法是Gafchromic LDV1 Film。辐射剂量监测系统的值与变色LDV1薄膜的值相当，有可容忍的偏差。因此，剂量监测系统（GE DoseWatch）和tld是确定无Gafchromic LDV1膜患者PSD值的可靠方法。然而，tld需要对方法进行一些修改，并且有必要在照射期间覆盖整个光束。尽管这是一个涉及孕妇的高风险手术，但患者的PSD值几乎为0.2Gy，比早期短暂性红斑症状的阈值（2Gy）低10%。

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Skin dose assessment using direct and indirect measurement for pregnant patient undergoing abdominal fluoroscopy procedure

Radiation exposure during complex Interventional Radiology (IR) procedures is often high, particularly in pregnant patients. It is important to monitor the patient's post-procedure condition by determining their Peak Skin Dose (PSD) value. However, direct measurements require a longer time to obtain the value. This study aimed to assess the accuracy of PSD in pregnant patients during abdominal procedures using direct and indirect measurements. PSD measurements were performed using thermoluminescent dosimeters (TLDs), Gafchromic LDV1 Film and Dose Monitoring Software (GE DoseWatch). Direct measurements were conducted using 20 sets of TLDs and a 21 cm × 30 cm LDV1 Film; placed on the patient's skin towards the X-ray tube. The patient underwent an abdominal procedure by using a Philips Allura Xper FD20/15 scanner. Indirect PSD measurements were simulated instantaneously using a GE DoseWatch. PSD distribution of TLDs revealed to be very low which is 290.23 mGy with deviation of 15.11 %, while PSD value for LDV1 Film and GE Dosewatch were 341.88 mGy and 345.44 mGy respectively with ±1.03 % percentage difference. An uncertainty of approximately ±25 % or less can be considered acceptable for PSD measurements in IR. The most accurate method for determining the PSD Value in patients is the Gafchromic LDV1 Film. The values of the radiation dose monitoring systems are comparable to those of the Gafchromic LDV1 Film, with a tolerable deviation. Thus, the dose monitoring system (GE DoseWatch) and the TLDs are reliable for determining the PSD Value for patients in the absence of Gafchromic LDV1 Film. However, the TLDs need to have some modifications to the methodology, and it is necessary to cover the whole beam during irradiation. Even though it is a high-risk procedure involving pregnant patients, PSD value for the patient was almost 0.2Gy, which is 10 % lower than the threshold value for early transient erythema symptoms (2Gy).

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.