Wiesinger B, Kirchner S, Blumenstock G, Herz K, Schmehl J, Claussen C D, Wiskirchen J
Diagnostische und Interventionelle Radiologie, Eberhard-Karls-Universitätsklinikum Tübingen.
Rofo. 2013 Feb;185(2):153-9. doi: 10.1055/s-0032-1330276. Epub 2012 Nov 29.
Comparison of dose area products (DAP) in diagnostic angiography procedures between an image intensifier (II) and a flat panel detector (FPD) angiography system and the evaluation of DAP/body mass index (BMI) dependency.
An image intensifier system or a flat panel detector system was used to perform 571 diagnostic angiographies (n = 328 and n = 243, respectively) of 5 different types: peripheral arterial, venous, single leg, abdominal and upper extremity. The results were retrospectively analyzed. The DAP, fluoroscopy time (t) and the number of series of the respective interventions as calculated by the respective machines was compared for all interventions and for the respective subtypes and machines. The BMI dependency was calculated separately for both machines for all interventions by subdividing the patients into 6 BMI classes defined by the WHO.
The average DAP for all diagnostic interventions was 1958.9 cGy×cm2 (t = 384.6 s, n = 7.85 series) for the II and 2927.4 cGy×cm2 (t = 267.4 s, n = 7.02 series) for the FPD. Group-dependent differences ranged between + 21 and + 252 % when using the FPD system. After time standardization, the respective increases were found to be 120 % for the FPD system. The DAPs increased considerably in patients with higher BMIs (766.7 cGy × cm2 - 6892.6 cGy × cm2, II machine, 950.5 cGy × cm2 - 12 487.7 cGy × cm2, FPD machine) with a greater DAP gain seen for the FPD. The average duration of the interventions was higher using the II machine.
The use of an FPD system led to higher DAP values compared to the II system in diagnostic angiographic procedures. In addition, increased BMI values led to higher DAPs, especially for the FPD machine. However, the average fluoroscopy times were shorter.
比较影像增强器（II）血管造影系统和平板探测器（FPD）血管造影系统在诊断性血管造影术中的剂量面积乘积（DAP），并评估DAP与体重指数（BMI）的相关性。
使用影像增强器系统或平板探测器系统对5种不同类型（外周动脉、静脉、单腿、腹部和上肢）的患者进行571例诊断性血管造影（分别为n = 328例和n = 243例）。对结果进行回顾性分析。比较所有干预措施以及各亚型和设备的DAP、透视时间（t）和各设备计算得出的相应干预系列数。通过将患者分为世界卫生组织定义的6个BMI类别，分别计算两种设备所有干预措施的BMI相关性。
II设备所有诊断性干预的平均DAP为1958.9 cGy×cm²（t = 384.6秒，n = 7.85个系列），FPD设备为2927.4 cGy×cm²（t = 267.4秒，n = 7.02个系列）。使用FPD系统时，组间差异在+21%至+252%之间。时间标准化后，FPD系统的相应增幅为120%。BMI较高的患者DAP显著增加（II设备为766.7 cGy×cm² - 6892.6 cGy×cm²，FPD设备为950.5 cGy×cm² - 12487.7 cGy×cm²），FPD的DAP增幅更大。使用II设备时干预的平均持续时间更长。
在诊断性血管造影术中，与II系统相比，使用FPD系统会导致更高的DAP值。此外，BMI值升高会导致更高的DAP，尤其是对于FPD设备。然而，平均透视时间更短。
