MAGNETIC-RESONANCE-IMAGING VERSUS COMPUTED-TOMOGRAPHY IN THE EVALUATION OF SOFT-TISSUE TUMORS OF THE EXTREMITIES
MAGNETIC-RESONANCE-IMAGING VERSUS COMPUTED-TOMOGRAPHY IN THE EVALUATION OF SOFT-TISSUE TUMORS OF THE EXTREMITIES
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DOI：
10.1097/00000658-198704000-00002
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发表时间：
1987-04-01
影响因子：
9
通讯作者：
ROSENBERG, SA
中科院分区：
文献类型：
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作者：
CHANG, AE;MATORY, YL;ROSENBERG, SA
对20例四肢软组织肿瘤患者进行了前瞻性评估，包括磁共振成像（MRI）和计算机断层扫描（CT）扫描，并随后与手术结果进行解剖学相关性分析。MRI和CT在评估肿瘤与主要神经血管（分别为80%和70%）和骨骼（分别为80%和75%）结构关系方面的准确率相似。MRI采用T2加权自旋回波（SE）（p2 < 0.002）和反转恢复（IR）（p2 < 0.005）序列时，在显示肿瘤与肌肉的对比方面明显优于CT。MRI和CT在显示肿瘤与脂肪的对比方面具有可比性。MRI在T1加权SE序列（p2 < 0.001）和T2加权SE序列（p2 < 0.001）上显示肿瘤与血管的对比度优于CT。在新鲜肿瘤和正常组织样本上测量T1和T2值，并使用等信号轮廓图预测不同MRI脉冲序列上的相对对比度。MRI在四肢软组织肿瘤的评估中似乎比CT有几个优势。
Twenty patients with extremity soft tissue tumors were prospectively evaluated with magnetic resonance imaging (MRI) and computed tomography (CT) scans with subsequent anatomic correlation of surgical findings. MRI and CT had a similar percentage of accuracy in assessing tumor relationship with major neurovascular (80% and 70%, respectively) and skeletal (80% and 75%, respectively) structures. MRI was significantly better than CT in displaying contrast between tumor and muscle when using the T2 weighted spin echo (SE) (p2 < 0.002) and inversion recovery (IR) (p2 < 0.005) pulse sequences. MRI and CT were comparable in demonstrating contrast between tumor and fat. The contrast between tumor and vessel was better displayed by MRI compared with CT when using the T1 weighted SE (p2 < 0.001) and T2 weighted SE (p2 < 0.001) pulse sequences. T1 and T2 values were measured on fresh tumor and normal tissue samples and were used to predict relative contrast on different MRI pulse sequences using isosignal contour plots. MRI appears to offer several advantages over CT in the evaluation of extremity soft tissue tumors.