摘要
目的：探讨胰腺癌磁共振弥散加权成像（DWI）中b值的最佳选择范围。方法：对73例检查者（胰腺癌41例，正常胰腺32例）进行MRI平扫及不同b值组合[（0，50）、（0，400）、（0，700）、（0，1000）s/mm2]的DWI扫描，对胰腺癌的表观弥散系数（Apparent diffusion coefficient，ADC）图进行评分，并分别测量胰腺癌肿、癌周胰腺及正常胰腺组织ADC值。结果：b值组合为（0，400）s/mm2时病变图像质量评分最高。不同b值组合，胰腺癌的ADC值与正常胰腺及癌周胰腺组织间具有统计学差异。结论：b值组合为（0，400）s/mm2时ADC图中病变显示清楚、伪影较少，有利于胰腺癌的诊断。
Abstract
Objective: To investigate the best b value for pancreatic cancer with DWI. Methods: Routine MR, DWI with different combination of b values [(0, 50), (0, 400), (0, 700), (0, 1000)s/mm2] were obtained in 73 cases(41 pancreatic cancer, 32 normal). The maps and the value of ADC in pancreatic cancer, tissue near the cancer, normal pancreatic tissue were analyzed and measured respectively. Results: The high image quality of ADC was the combination of (0, 400)s/mm2. There was a significant difference among tissue near the cancer, normal pancreatic tissue and pancreatic cancer. Conclusion: The （0，400）s/mm2 is the best b value for pancreatic cancer with DWI.
关键词
胰腺肿瘤 /
磁共振成像 /
弥散
Key words
Pancreatic neoplasms /
Diffusion magnetic resonance imaging
郭 立;杨达宽;袁曙光;闫 东;王家平.
胰腺癌磁共振弥散成像中b值的选择[J]. 中国临床医学影像杂志. 2010, 21(2): 87-89
GUO Li;YANG Da-kuan;YUAN Shu-guang;YAN Dong;WANG Jia-ping.
The best b value of MR diffusion-weighted imaging for pancreatic cancer[J]. Journal of China Clinic Medical Imaging. 2010, 21(2): 87-89
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