Kier R, Herfkens R J, Blinder R A, Leight G S, Utz J A, Silverman P M
AJR Am J Roentgenol. 1986 Sep;147(3):497-500. doi: 10.2214/ajr.147.3.497.
The ability of MRI to detect parathyroid gland enlargement was assessed using 1.5-T systems and surface coil reception. Nine patients with primary hyperparathyroidism were studied before surgical neck exploration. Five-millimeter-thick axial images were obtained from the thyroid cartilage to the sternal notch. Both T1 and T2 contrast-weighted spin-echo sequences were performed in most cases. MRI correctly identified six out of seven parathyroid adenomas. In the false-negative case, T2 contrast-weighted sequences were not performed for technical reasons. In the one case of surgically proven parathyroid hyperplasia, a lesion identified by MRI as a parathyroid adenoma coincided at surgery with the largest of three hyperplastic parathyroid glands. A single case demonstrated a potential pitfall in the search for ectopic parathyroid glands: A large colloid cyst in the posterior portion of the thyroid gland showed signal characteristics indistinguishable from a parathyroid adenoma. The enlarged parathyroid glands were best visualized on T2 contrast-weighted sequences, with the lesions demonstrating greater signal than surrounding tissues.
使用1.5-T系统和表面线圈接收装置评估MRI检测甲状旁腺肿大的能力。对9例原发性甲状旁腺功能亢进患者在颈部手术探查前进行了研究。从甲状软骨至胸骨切迹获取5毫米厚的轴向图像。大多数情况下均进行了T1和T2对比加权自旋回波序列检查。MRI正确识别出了7例甲状旁腺腺瘤中的6例。在假阴性病例中，由于技术原因未进行T2对比加权序列检查。在1例经手术证实的甲状旁腺增生病例中，MRI识别为甲状旁腺腺瘤的病变在手术中与三个增生甲状旁腺中最大的那个相吻合。1例病例显示在寻找异位甲状旁腺时存在一个潜在陷阱：甲状腺后部的一个大胶体囊肿显示出与甲状旁腺腺瘤无法区分的信号特征。肿大的甲状旁腺在T2对比加权序列上显示最佳，病变的信号高于周围组织。
