Wang C K, Kuo Y T, Liu G C, Tsai K B, Huang Y S
Department of Radiology, Kaohsiung Medical University, Taiwan, ROC.
J Comput Assist Tomogr. 2000 Nov-Dec;24(6):872-7. doi: 10.1097/00004728-200011000-00009.
Our goal was to determine whether dynamic MR subtraction images could be used to detect and stage gastric tumors.
Dynamic MR subtraction images were prospectively performed in 20 patients without gastric lesions and in 39 patients with gastric tumors. The flat- or depressed-type early gastric cancers were excluded. The MR findings were assessed for layered pattern of the normal gastric wall, detectability of tumors, enhanced pattern of tumor, and depth of the tumor invasion. Surgical specimens were obtained from 30 of the patients with tumors, and histopathologic sections were made in the dynamic MR scanning direction.
The three-layered structure of the normal gastric wall was apparent in more of the dynamic MR subtraction images (60%) than of the nonsubtraction images (30%) in the control group. All 39 gastric tumors were detected by MRI. The intact inner layers overlying stromal tumors and outer layers interrupted by advanced gastric cancers were clear on the subtracted images. MRI accurately T-staged 88% of the gastric cancers.
Dynamic MR subtraction images can be used to identify gastric tumors and to stage gastric cancers.
我们的目标是确定动态磁共振减影图像是否可用于检测胃肿瘤并进行分期。
对20例无胃病变患者和39例胃肿瘤患者前瞻性地进行了动态磁共振减影成像。排除了平坦型或凹陷型早期胃癌。评估磁共振成像结果，包括正常胃壁的分层模式、肿瘤的可检测性、肿瘤的强化模式以及肿瘤浸润深度。从30例肿瘤患者中获取手术标本，并在动态磁共振扫描方向制作组织病理学切片。
在对照组中，正常胃壁的三层结构在更多的动态磁共振减影图像（60%）中比非减影图像（30%）中更明显。所有39例胃肿瘤均通过磁共振成像检测到。在减影图像上，基质瘤上方完整的内层和进展期胃癌中断的外层清晰可见。磁共振成像准确地对88%的胃癌进行了T分期。
动态磁共振减影图像可用于识别胃肿瘤并对胃癌进行分期。
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