| CT导向下经皮肺穿刺活检术低剂量扫描的可行性研究 |
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| 引用本文： | 张雅萍,赵振华,王伯胤. CT导向下经皮肺穿刺活检术低剂量扫描的可行性研究[J]. 中国现代医生, 2011, 49(11): 52-54 |
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| 作者姓名： | 张雅萍 赵振华 王伯胤 |
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| 作者单位： | 浙江省绍兴市人民医院放射科,浙江绍兴,312000 |
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| 基金项目： | 卫生部医药卫生科技发展研究中心 |
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| 摘 要： | 目的探讨低剂量CT扫描在CT导向下经皮肺穿刺活检术中的应用价值。方法把80例CT导向下经皮肺穿刺活检术患者随机分成两组，A组40例行常规剂量（130kV，100mA）扫描，B组40例行低剂量（130kV，20mA）扫描，分别记录容积CT剂量指数（cTDIv01），并计算剂量长度积（DLP）。统计两组相关指标：平均穿刺时间、活检阳性率、肺内针道出血发生率及气胸发生率。对两种不同扫描参数的x线辐射剂量和相关指标进行统计学分析。结果B组的CTDIvol为（2．12±0．15）mGy，DLP为（43．06±3．25）mGy·cm，分别为A组的19．67％和19．02％，两组问的差异有统计学意义。两组的平均穿刺时间、活检阳性率、肺内针道出血及气胸发生率无显著性差异。B组在病灶的毛刺、钙化数目等细节显示方面不如A组，且在纵隔窗观察时，B组图像纵隔及胸壁结构的噪声较A组增大；上述两种情况对病灶穿刺过程影响不大。结论CT导向下经皮肺穿刺活检术低剂量扫描（130kV、20mA）既能保证穿刺成功和穿刺安全，又能显著减少患者的辐射剂量，是一种可行的方法。
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| 关 键 词： | 肺穿刺活检术 低剂量 体层摄影术 x线计算机 |
The Feasibility Study of Low Dose CT Scan during CT-guided Percutaneous Lung Biopsy |
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| ZHANG Yaping,ZHAO Zhenhua,WANG Boyin. The Feasibility Study of Low Dose CT Scan during CT-guided Percutaneous Lung Biopsy[J]. , 2011, 49(11): 52-54 |
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| Authors: | ZHANG Yaping ZHAO Zhenhua WANG Boyin |
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| Affiliation: | ZHANG Yaping ZHAO Zhenhua WANG Boyin Department of Radiology,Shaoxing City People's Hospital,Shaoxing 312000,China |
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| Abstract: | Objective To discuss the value of low dose CT scan during CT-guided percutaneous lung biopsy.Methods 80 cases of CT-guided percutaneous lung biopsy were divided into two groups,each having 40 cases.Group A underwent routine dose(130kV,100mA) CT scan while group B underwent low dose(130kV,20mA) CT scan.Volume CT dose index was recorded and dose length product was calculated.Positive rate of biopsy,mean puncture time,incidence of intrapulmonary hemorrhage and incidence of pneumothorax were also calculated.Sta... |
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| Keywords: | Lung biopsy Low dose Tomography X-ray computed |
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