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目的探讨介入微导管技术中DSA的质量控制。方法常规Seldinger导管法,选择好DSA技术参数、高压注射器参数,常规呼吸训练及心理护理,利用“路径图”(roadmap)技术,将微导管超选至靶血管,进行造影及栓塞治疗时,对其DSA图像质量进行评价。结果检查151例病例(上腹部128例,胸部16例,头面部5例,盆腔2例),620个曝光采集序列(sequences),洗印966幅图像,图像质量优秀的497个序列,占80.2%;图像质量良好的109个序列,占17.5%;图像质量差的9个序列,占1.45%;造影失败5个序列,占0.86%。结论不同的病例、部位的图像采集应用不同的技术参数;使用非离子型造影剂有利于提高检查图像质量;肺部DSA要利用密度补偿;手推造影要注意压力控制、手脚配合及采集蒙片时机;术中护理与呼吸训练必不可少。
Objective To investigate the quality control of DSA in interventional microcatheter. Methods Conventional Seldinger’s catheter method was used to select DSA parameters, high-pressure syringe parameters, routine breathing training and psychological nursing. Using “roadmap” technique, the microcatheter was superselected to the target vessel for angiography and embolization. Its DSA image quality is evaluated. Results A total of 497 sequences with an average of 80% accuracy were examined in 151 cases (128 in the upper abdomen, 16 in the chest, 5 in the head and face, 2 in the pelvis), 620 exposure sequences, 109 images with good image quality accounted for 17.5%, 9 images with poor image quality accounted for 1.45%, and 5 sequences with failed imaging accounted for 0.86%. CONCLUSIONS: Different technical parameters should be used for image acquisition in different cases and locations. Using non-ionic contrast agent is helpful to improve the quality of examination images. DSA in lungs should be compensated by density. Pressure control, hand-foot coordination and collection of mask Timing; Intraoperative care and breathing training are essential.