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CLCULATION OF PATIENT DOSES USING A HUMAN VOXEL PHANTOM OF VARIABLE DIAMETER

机译：使用可变直径人类体素幻像计算患者剂量

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摘要

The voxel phantom Golem was used for the dosimetric part of the EU research project `Predicivity and Optimisation in Medical Radiation Protection'. A risk-related dose quantity, H_Golem, was evaluated using calcualted organ equivalent dose conversion coefficients and entrance air kerma values measured during the clinical examinations. Two types of examinations were consdiered: chest PA examinations, which were performed in 16 grousp invovling different speed classes, mean optical densities, tube voltages and methods of scatter reduction; and lumber spine AP examinations, for whcih four different combinations of speed class and tube voltage were used. For the chest examinations, the expected effects of different examination techniques are clearly mirrored by the dosimetric results. For the lumbar spine examinations, part of the expected results was concealed by the uwanted influence of the patient diametrs on the doses, which could be partially eliminated by adapting the voxel phantom to differetn sizes.
机译：体素幻影Golem被用作欧盟研究项目“医疗辐射防护的精确性和优化”的剂量学部分。使用计算得出的器官当量剂量转换系数和临床检查期间测得的入口空气比释动能值，评估了与风险有关的剂量H_Golem。考虑了两种类型的检查：胸部PA检查，以16种团块进行，涉及不同的速度等级，平均光密度，管电压和散射减少方法；和木材脊柱AP检查，使用了速度等级和管电压的四种不同组合。对于胸部检查，剂量学结果清楚地反映了不同检查技术的预期效果。对于腰椎检查，患者直径对剂量的不利影响掩盖了部分预期结果，可以通过使体素体模适应不同的大小来部分消除。

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