Gaa J, Wieder H, Schwaiger M, Rummeny E J
Institut für Röntgendiagnostik, Klinikum rechts der Isar, Technische Universität München.
Chirurg. 2005 Jun;76(6):525-6, 528-34. doi: 10.1007/s00104-005-1031-0.
Cross-sectional imaging modalities such as ultrasound, computed tomography (CT), magnetic resonance imaging (MRI), and Positron emission tomography (PET)/CT have benefited from rapid technical advances in recent years. In patients with colorectal tumors, multislice CT is the standard technique for preoperative evaluation and follow-up. It is faster than single-slice helical CT and allows for excellent 3D imaging of liver anatomy and tumor volumetry. The most accurate technique for detecting and characterizing focal liver lesions is MRI using state-of-the-art scanners and liver-specific contrast agents and should be used for preoperative evaluation of all possible surgical candidates. Whole-body FDG-PET and PET/CT are most useful in the detection of extrahepatic disease and may alter clinical management in up to 20% of patients by detecting extrahepatic spread of disease.
近年来，超声、计算机断层扫描（CT）、磁共振成像（MRI）以及正电子发射断层显像（PET）/CT等横断面成像技术受益于快速的技术进步。对于结直肠肿瘤患者，多层螺旋CT是术前评估和随访的标准技术。它比单层螺旋CT速度更快，能够对肝脏解剖结构和肿瘤容积进行出色的三维成像。检测和鉴别肝脏局灶性病变最准确的技术是使用先进扫描仪和肝脏特异性造影剂的MRI，应用于所有可能的手术候选者的术前评估。全身氟代脱氧葡萄糖（FDG）-PET和PET/CT在检测肝外疾病方面最有用，通过检测疾病的肝外扩散，可能会改变高达20%患者的临床治疗方案。
