Waggershauser T, Herrmann K, Schätzl M, Reiser M
Institut für Radiologische Diagnostik, Klinikum Grosshadern, Ludwig-Maximilians-Universität München.
Radiologe. 1995 Mar;35(3):148-51.
In angiographic and interventional procedures the often long fluoroscopy times add a great deal to the total patient dose. The new Multistar T.O.P. (Siemens) is equipped with various features for dose reduction. In this study pulsed fluoroscopy was tested versus standard continuous fluoroscopy and supervisions.
Fluoroscopy with 3, 7.5, and 15 pulses/s in the Multistar T.O.P. were compared to standard fluoroscopy and to reduced-dose supervision in a human pelvic phantom. The skin entry dose and pelvic dose were continuously registered.
The supervision mode used 58% of the dose used in continuous fluoroscopy. Pulsed fluoroscopy with 15 pulses/s required 54%, 7.5 pulses/s 27% and 3 pulses/s. These provide adequate image quality with only 10% of the standard dose.
It was possible to save up to 90% of the fluoroscopy dose in interventions and angiographies when using the new pulsed fluoromodes available in the Multistar T.O.P.
在血管造影和介入手术中，通常较长的透视时间会使患者的总剂量大幅增加。新型Multistar T.O.P.（西门子）具备多种降低剂量的功能。在本研究中，对脉冲透视与标准连续透视及监测进行了测试。
在人体盆腔模型中，将Multistar T.O.P.中每秒3、7.5和15次脉冲的透视与标准透视及低剂量监测进行比较。持续记录皮肤入射剂量和盆腔剂量。
监测模式使用的剂量为连续透视所用剂量的58%。每秒15次脉冲的脉冲透视需要54%的剂量，每秒7.5次脉冲需要27%的剂量，每秒3次脉冲需要[此处原文未提及具体数据]。这些在仅用标准剂量的10%时就能提供足够的图像质量。
在使用Multistar T.O.P.中可用的新型脉冲透视模式时，在介入手术和血管造影中最多可节省90%的透视剂量。
