Nguyen-Kim L, Fargeot C, Beaussier H, Payen S, Chiras J
Pharmacy Department, AGEPS, AP-HP, Paris, France.
Interv Neuroradiol. 2013 Jun;19(2):173-9. doi: 10.1177/159101991301900205. Epub 2013 May 21.
This study aimed to evaluate the protection granted by a simple device (X'TENS(®), Thiebaud, France) and to provide operators with information on the performance of this new device, which has not yet been assessed. Our assumption is that this device efficiently reduces the radiation dose to the operator. In a prospective clinical study, the radiation dose the operator's hand receives has been assessed using a specific sensor (UNFOR Instrument). Each patient included in the study was to receive at least two injections of cement during the procedure. Exposure was measured with and without the range extender. The data collected were then processed using a Wilcoxon matched pairs test. During 14 interventions, 20 vertebrae were treated with both procedures. Eleven women and three men were included. Seven patients underwent vertebroplasty for metastatic lesions and seven for osteoporotic lesions, bone fractures or vertebral compressions. The average injection time was 1.35 minutes with the device and 1.20 without (p=0.75). The dose to the hand per ml injected was 111.37 vs. 166.91 (p<0.05). Theoretically, the protection granted by the range extender depends on the length of the device. Our results are consistent with the inverse-square law. However, the variations in our results indicate that a proper and rigorous use is mandatory for the device to be effective. Given that radioprotection during fluoroscopy procedures is a frequently raised issue, the need for information for a safer practice increases likewise.
本研究旨在评估一种简单设备（X'TENS(®)，法国蒂埃博公司）所提供的防护作用，并向操作人员提供有关这种尚未经过评估的新设备性能的信息。我们的假设是，该设备能有效降低操作人员所受的辐射剂量。在一项前瞻性临床研究中，使用一种特殊传感器（UNFOR仪器）对操作人员手部所接受的辐射剂量进行了评估。研究纳入的每位患者在手术过程中至少接受两次骨水泥注射。在使用和不使用延长器的情况下测量辐射暴露情况。然后使用Wilcoxon配对检验对收集到的数据进行处理。在14次干预过程中，两种操作方法均治疗了20个椎体。纳入了11名女性和3名男性。7例患者因转移性病变接受椎体成形术，7例因骨质疏松性病变、骨折或椎体压缩接受手术。使用该设备时平均注射时间为1.35分钟，不使用时为1.20分钟（p = 0.75）。每注射1毫升时手部所接受的剂量分别为111.37和166.91（p<0.05）。从理论上讲，延长器所提供的防护作用取决于设备的长度。我们的结果与平方反比定律相符。然而，我们结果的变化表明，要使该设备有效，必须正确且严格地使用。鉴于透视检查过程中的辐射防护是一个经常被提及的问题，同样也越来越需要获取信息以实现更安全的操作。
