Magnusson A, Radecka E, Lönnemark M, Raland H
Department of Diagnostic Radiology, Uppsala University Hospital, Uppsala, Sweden.
Acta Radiol. 2005 Aug;46(5):505-9. doi: 10.1080/02841850510021508.
To evaluate a new adjunctive guidance device, a puncture guide, constructed to simplify computed tomography (CT)-guided punctures and to make the procedure more accurate and safe.
17 patients referred for CT-guided punctures were included in the study. There were 10 thoracic and 7 abdominal or pelvic lesions with a mean maximum diameter of 29 +/- 18 mm. All punctures were performed using a laser guide combined with the new device. The needle guide created a streak artefact in the image, indicating the needle path.
The puncture was successful at the first attempt in 15 of the 17 patients. The artefact was visible in all patients, and in the majority there was a distinct artefact reaching from the entry point to the lesion. The deviation between the angle of the streak artefact and the final angle of the needle was 1.1 degrees.
The benefits of the puncture guide were the artefact pointing at the target, the needle support, and accuracy when performing CT-guided punctures.
评估一种新型辅助引导装置——穿刺导向器，其旨在简化计算机断层扫描（CT）引导下的穿刺操作，并使该过程更准确、安全。
17名因CT引导下穿刺而被转诊的患者纳入本研究。有10个胸部病变和7个腹部或盆腔病变，平均最大直径为29±18毫米。所有穿刺均使用激光导向器结合新装置进行。针导向器在图像中产生条纹伪影，指示针的路径。
17名患者中有15名首次穿刺成功。所有患者均可看到伪影，且大多数患者有从进针点到病变的明显伪影。条纹伪影角度与针的最终角度之间的偏差为1.1度。
穿刺导向器的优点在于伪影指向目标、对针的支撑以及在进行CT引导下穿刺时的准确性。
