ISSN 1004-4140
CN 11-3017/P
王策, 周凤云, 轩艳姣, 等. 患者双下肢X射线一次性曝光中性腺受照剂量测量与分析[J]. CT理论与应用研究(中英文), xxxx, x(x): 1-6. DOI: 10.15953/j.ctta.2023.171.
引用本文: 王策, 周凤云, 轩艳姣, 等. 患者双下肢X射线一次性曝光中性腺受照剂量测量与分析[J]. CT理论与应用研究(中英文), xxxx, x(x): 1-6. DOI: 10.15953/j.ctta.2023.171.
WANG C, ZHOU F Y, XUAN Y J, et al. Measurement and Analysis of Gonadal Irradiation Dose During Singe-shot X-ray Exposure of Both Lower Limbs[J]. CT Theory and Applications, xxxx, x(x): 1-6. DOI: 10.15953/j.ctta.2023.171. (in Chinese).
Citation: WANG C, ZHOU F Y, XUAN Y J, et al. Measurement and Analysis of Gonadal Irradiation Dose During Singe-shot X-ray Exposure of Both Lower Limbs[J]. CT Theory and Applications, xxxx, x(x): 1-6. DOI: 10.15953/j.ctta.2023.171. (in Chinese).

患者双下肢X射线一次性曝光中性腺受照剂量测量与分析

Measurement and Analysis of Gonadal Irradiation Dose During Singe-shot X-ray Exposure of Both Lower Limbs

  • 摘要: 目的:探讨双下肢数字化X射线摄影中患者性腺的体表摄入剂量(ESD)与性别、年龄、身高和体重等生理参数之间的关系,探讨一次性曝光全幅长板成像的辐射剂量在临床的可行性。方法:前瞻性收集双下肢负重位患者300例,其中男性129例,女性171例。收集双下肢正位和正侧位扫描的患者,摄片时分别在患者的两侧性腺部位设置(TLD)探测器,曝光后使用RGD-3B型热释光剂量仪对其测读,得出相应的剂量值并分析。结果:全副长板成人模式的3次曝光剂量(正位+双侧位)为(1281±202)μGy,是单次曝光剂量(429±99)μGy的3倍左右,3次曝光的剂量(正位+双侧位)显著低于国际规定的辐射剂量;使用多元线性回归分析表明只有身高和体重是性腺辐射剂量的影响因素,而与性别和年龄无关。在儿童扫描参数下,身高<160 cm的DES剂量为(359±27)μGy,身高>160 cm的ESD剂量为(627±155)μGy,有显著的统计学差异;在成人模式下,身高和体重并不影响ESD剂量。结论:本研究表明单次曝光技术行负重位双下肢全长扫描时性腺的受照剂量与身高和体重有关。性腺所受剂量在安全范围内,一次曝光全副长板的辐射剂量在临床实践中可行。

     

    Abstract: Objective: To investigate the relationship between body surface ingestion dose (ESD) of gonads and physiological parameters such as sex, age, height, and weight in digital X-ray exposure of both lower limbs and to explore the feasibility of full-width long-plate imaging with single-dose radiation exposure. Methods: A total of 300 patients at a weight-bearing position of both lower limbs were prospectively enrolled in a hospital in Beijing, including 129 males and 171 females. The TLD detectors were set at the gonads on both sides of the patient during scanning. After exposure, the TLD detectors were measured with an RGD-3B thermoluminescence dosimeter, and the corresponding dose values were obtained and analyzed. Results: The average triple exposure dose (AP + bilateral view) in the full-length plate adult mode was (1281±202) µGy, which was approximately three times the single exposure dose (429±99) µGy. The triple exposure dose (AP + bilateral view) was significantly lower than the radiation dose recommended by international standards. Multiple linear regression analysis showed that only height and weight affected gonadal radiation dose. Under the scanning parameters of children, the ESD dose was (359±27) µGy and (627±155) µGy when the height was less or more than 160 cm, respectively, with a significant statistical difference. In adult mode, height and weight did not affect the ESD dose. Conclusions: This study showed that the exposure dose of gonads during full-length scanning of both lower limbs in a weight-bearing position with a single exposure was affected by height and weight. The dose received by the gonads was within the safe range, and a single exposure of the full-length plate radiation dose is feasible in clinical practice.

     

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