Takagi R, Amano Y, Uchiyama N, Hayashi H, Teramoto A, Kumazaki T
Nippon Medical School, Department of Radiology.
Nihon Igaku Hoshasen Gakkai Zasshi. 2001 Mar;61(4):169-71.
The purpose of this study was to determine the value of multiphase helical CT (MHCT) in the diagnosis of pituitary microadenoma. Twenty-two patients with clinically suspected microadenoma were examined. Coronal pre-contrast CT was initially carried out. Three series of helical scanning using 1-mm collimation, 1-mm/s table speed, and 1-mm interval reconstruction covering the entire pituitary gland were performed with an intravenous injection of contrast medium. Immediately after MHCT, delayed CECT was performed. Twenty microadenomas (3-10 mm, mean: 5.5 mm) were surgically confirmed. MHCT could depict all 20 tumors, while pre-contrast CT and delayed CECT showed 4 and 12 of 20 tumors, respectively. MHCT was useful in the diagnosis of pituitary microadenoma owing to its high spatial resolution and extensive coverage.
本研究的目的是确定多期螺旋CT（MHCT）在垂体微腺瘤诊断中的价值。对22例临床怀疑为微腺瘤的患者进行了检查。首先进行冠状位平扫CT。静脉注射造影剂后，采用1毫米准直、1毫米/秒的床速和1毫米间隔重建，对整个垂体进行了3组螺旋扫描。MHCT后立即进行延迟增强CT（CECT）。手术证实有20个微腺瘤（3 - 10毫米，平均：5.5毫米）。MHCT能显示全部20个肿瘤，而平扫CT和延迟CECT分别显示20个肿瘤中的4个和12个。由于其高空间分辨率和广泛的覆盖范围，MHCT在垂体微腺瘤的诊断中很有用。
