Chongqing Universal Hongling Medical Imaging Diagnostic Center, Yuzhong, Chongqing 400000, China.
Contrast Media Mol Imaging. 2022 Aug 4;2022:1479416. doi: 10.1155/2022/1479416. eCollection 2022.
Pancreatic cancer is a common gastrointestinal tumor with increasing morbidity and mortality, and it is difficult to differentiate it from chronic mass pancreatitis. F-18-fluorodeoxyglucose positron emission tomography/computed tomography (F-FDG PET/CT) can be used for diagnosis of pancreatic cancer, staging, radiotherapy planning, evaluation of efficacy and recurrence, and differentiation from posttreatment fibrosis but the sensitivity and specificity of diagnosis of chronic pancreatitis are poor. Magnetic resonance imaging (MRI) not only shows the morphology, location, and size of organs and lesions but also has the advantages of low radiation, high soft tissue contrast, and multiparameter imaging, which can help determine the nature of occupying pancreatic lesions. In this study, the watershed algorithm (WA) was used to segment the abdominal images to extract images of pancreatic cancer cells and to compare the value of F-FDG PET/CT combined with MRI in the diagnosis of pancreatic occupying lesions.
胰腺癌是一种常见的消化道肿瘤，发病率和死亡率呈上升趋势，且难以与慢性肿块性胰腺炎相鉴别。18F-氟代脱氧葡萄糖正电子发射断层扫描/计算机断层扫描（F-FDG PET/CT）可用于诊断胰腺癌、分期、放疗计划、疗效和复发评估，并可与治疗后纤维化相鉴别，但对慢性胰腺炎的诊断敏感性和特异性较差。磁共振成像（MRI）不仅能显示器官和病变的形态、位置和大小，而且具有辐射低、软组织对比度高、多参数成像等优点，有助于确定占位性胰腺病变的性质。本研究采用分水岭算法（WA）对腹部图像进行分割，提取胰腺癌细胞图像，并比较 F-FDG PET/CT 联合 MRI 在诊断胰腺占位性病变中的价值。
