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Solitary pulmonary nodules:quantitative investigation with dynamic MRI
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF RADIOLOGY
- Issue:
- 7
- DOI:
- 10.3760/j.issn:1005-1201.2002.07.004
- Key Word:
- 硬币病变,肺;磁共振成像;图像增强
Abstract： 目的探讨动态增强MRI对孤立性肺结节性质的鉴别诊断价值.方法用动态增强MRI对44例孤立性肺结节的增强模式进行定量分析.在动态增强时间-信号强度曲线基础上,测量病灶的最大增强线性斜率(SS)、强化峰值(PH),以及在增强后1、2、4 min时的信号强度改变率(E1、E2及E4). 结果恶性结节和炎症性结节较结核球有更高的SS[(4.44±1.40) %/s、(3.99±0.71)%/s、 (0.86±0.37)%/s, P<0.001 ]和PH(99.49±20.52、108.20±11.90、14.12±5.92, P<0.001); 炎症性结节在4 min时信号强度改变率E4高于恶性结节[(120.02±6.95) %与 (67.03±18.04)%, P<0.001].结论动态增强MRI能反映病灶的血供信息,为孤立性肺结节性质的鉴别诊断提供证据.
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