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摘要目的前瞻性评估双回波化学位移MR成像用化学位移比(CSR)和信号强度指数(SII)鉴别成人胸腺增生和前纵隔肿瘤的能力和限制,并提出每项指标的最佳临界值,观
Abstract Objective To prospectively evaluate the ability and limitations of double-wave chemical shift MR imaging in differentiating thymus hyperplasia and anterior mediastinal tumors using chemical shift ratio (CSR) and signal intensity index (SII), and to propose the optimal critical value for each index, View