【摘要】 目的评价头颈部肿块在增强ＭＲＩ上的表现。方法２５例头颈部肿块经病理和随访证实者１７例。所有病例均行普通ＳＥＴ１加权平扫（ＴＲ／ＴＥ＝５００～６００／３０）和增强ＳＥＴ１加权扫描（ＴＲ／ＴＥ＝３００～５００／３０）。结果与平扫ＭＲＩ相比，ＧｄＤＴＰＡ静脉注入后，在ＳＥＴ１加权像上共２３例肿块有增强表现（２３／２５）。病变增强方式有均匀增强（１０／２３）和不均匀增强（１３／２３）两种。１６例头颈部肿块的病变范围在ＧｄＤＴＰＡ注入后清晰显示。结论使用ＧｄＤＴＰＡ后，头颈部肿块性病变增强的各种形态学表现与其内部结构密切相关。增强ＭＲＩ在显示病变内部结构和范围，评价复发性病变方面优于平扫ＭＲＩ。更多还原

【Abstract】 Objective To evaluate mass lesions of the head and neck with enhanced (Gd DTPA) MR imaging. Methods twenty five of patients (13 males and 12 females; mean: 46.9 years) suffered from mass lesions of the head and neck inspected with Gd DTPA MR imaging, 17 cases were certificated histopathologically and followed up. The examinations of all patients were carried out with plain T1 weighted spin echo sequences (TR/TE=500 600/30), and Gd DTPA enhanced T1 weighted spin echo sequences (TR/TE=300 500/30). Results Comparing with plain MR imaging, 23 mass lesions were stained on SE T1 weighted images (23/25) after intravenous administration of Gd DTPA. The enhanced patterns of these lesions might be divided into homogeneous (10/23) and inhomogeneous (13/23). Gd DTPA was helpful in delineating extent of 16 mass lesions. Conclusion The various morphologic manifestations of enhanced lesions have close relations with their own intimate structures. The enhanced MR imaging is superior to plain MR imaging on displaying the inner structure and extent of diseases and estimating the recurrent lesions.更多还原