Pancreatic-phase versus portal vein-phase helical CT of the pancreas: Optimal temporal window for evaluation of pancreatic adenocarcinoma
Pancreatic-phase versus portal vein-phase helical CT of the pancreas: Optimal temporal window for evaluation of pancreatic adenocarcinoma
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DOI：
10.2214/ajr.172.3.10063844
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发表时间：
1999-03-01
影响因子：
5
通讯作者：
Mueller, PR
中科院分区：
文献类型：
--
作者：
Boland, GW;O'Malley, ME;Mueller, PR
OBJECTIVE.我们的目的是使用螺旋CT胰腺期和门静脉期胰腺癌，邻近正常胰腺，和关键血管结构的增强衰减值进行比较。对41例经手术病理证实的胰腺癌患者行螺旋CT双期薄层动态增强扫描，胰腺期和门静脉期扫描延迟分别为40秒和70秒，计算正常胰腺、胰腺肿瘤、腹腔轴、上级肠系膜动脉、上级肠系膜静脉、脾静脉和门静脉。使用感兴趣区域评估定量值。胰腺期（57 H）肿瘤和正常胰腺之间增强的平均差异显著大于门静脉期（35 H）（p =.0001）。胰腺期所有重要血管结构的增强值也明显大于门静脉期（p
OBJECTIVE. Our objective was to use helical CT to compare the enhancement attenuation values of pancreatic adenocarcinoma, adjacent normal pancreas, and critical vascular structures during the pancreatic phase and portal vein phase.SUBJECTS AND METHODS. Forty-one patients with pathologically proven pancreatic adenocarcinoma underwent dual-phase thin-section dynamic helical CT using a pancreatic-phase and portal vein-phase protocol, The scan delay after initiation of the contrast bolus was 40 sec for the pancreatic phase and 70 sec for the portal vein phase, Attenuation values after IV contrast administration were calculated during both phases of scanning for normal pancreas, pancreatic tumor, celiac axis, superior mesenteric artery, superior mesenteric vein, splenic vein, and portal vein. Quantitative values were assessed using regions of interest.RESULTS. Mean differences of enhancement between tumor and normal pancreas were significantly greater in the pancreatic phase (57 H) than the portal vein phase (35 H) (p =.0001). Enhancement values of all the critical vascular structures were also significantly greater in the pancreatic phase than the portal vein phase (p