Hidajat N, Wust P, Felix R, Schröder R
Zentrale Abt. für Diagn. und Interv. Radiologie, Krankenhaus Peine.
Rofo. 2006 Feb;178(2):185-90. doi: 10.1055/s-2005-858789.
To determine the values of effective dose and partial body dose for the radiologist and the assistant during transarterial chemoembolization (TACE) of hepatocellular carcinoma (HCC) und to compare the doses with the dose limits.
In 65 TACE of HCC cases, values of various surface doses for the radiologist and the assistant were measured. The measurements were performed with the help of thermoluminescence dosemeters (TLD) that were attached to the eyebrows, over the lobes of the thyroid gland, to the breasts, abdomen and symphysis, and to the hands and the lower legs. The measured surface dose values were used as indicators of the exposure of the organs and tissues located near the surface, i. e. eye lens, thyroid gland, breast, testes and tibia. They were also seen as conservative estimations of tissues deep inside the body and the extremities.
The highest surface dose for the radiologist was measured at the lower leg (0.58 +/- 0.28 mSv) and the highest surface dose for the assistant was measured at the right lower leg (0.24 +/- 0.20 mSv) since it was closer to the tube than the left side, followed by the dose values at the also unprotected areas of the eyebrows, lobes of the thyroid gland and the hands. The estimated value of the effective dose was 0.06 +/- 0.03 mSv for the radiologist and 0.04 +/- 0.01 mSv for the assistant. With regard to the relationship between the dose limits according to the German X-ray regulation and the measured values and with regard to the maximum possible number of interventions per year, the partial body dose of the red bone marrow in the lower leg provided the greatest limitation, followed by the partial body dose of the muscle in the lower leg and the effective dose.
In order to meet the dose limits, especially the lower leg should be protected, and the effective dose should also be reduced.
确定肝细胞癌（HCC）经动脉化疗栓塞术（TACE）过程中放射科医生和助手的有效剂量及局部身体剂量值，并将这些剂量与剂量限值进行比较。
对65例HCC患者进行TACE时，测量了放射科医生和助手的各种体表剂量值。测量借助热释光剂量计（TLD）进行，这些剂量计分别贴于眉部、甲状腺叶上方、胸部、腹部和耻骨联合处、手部及小腿。所测体表剂量值用作体表附近器官和组织（即晶状体、甲状腺、乳房、睾丸和胫骨）受照情况的指标。它们也被视为对体内深部组织和四肢剂量的保守估计。
放射科医生体表最高剂量出现在小腿（0.58±0.28 mSv），助手体表最高剂量出现在右小腿（0.24±0.20 mSv），因为右小腿比左侧更靠近球管，其次是眉部、甲状腺叶和手部等同样未受防护区域的剂量值。放射科医生的有效剂量估计值为0.06±0.03 mSv，助手为0.04±0.01 mSv。就德国X射线法规规定的剂量限值与测量值的关系以及每年最大可能的干预次数而言，小腿红骨髓的局部身体剂量限制最大，其次是小腿肌肉的局部身体剂量和有效剂量。
为满足剂量限值，尤其应保护小腿，同时也应降低有效剂量。
