双能CT对孤立性肺结节的诊断价值

Radiologic Practice(2011)

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Abstract
目的:探讨双能CT对孤立性肺结节(SPN)的诊断价值。方法:采用双能CT(管电压为80和140 kVp)对水模、体模、47例平扫CT无明显钙化的SPN(恶性31例,良性16例)进行扫描,测量其CT值变化,计算病灶内钙质含量,比较良恶性SPN的CT值变化及钙质含量。结果:良性SPN的CT值变化中位数为5 HU,恶性SPN为4 HU;良恶性SPN的CT值变化[良性(5.9±16.1)HU,恶性(4.7±11.2)HU]及钙质含量[良性(12.1±11.7)mg/ml,恶性(10.5±9.2)mg/ml]差异均无显著性意义(P>0.05)。结论:对于常规平扫CT无明显钙化的SPN,双能CT并未能为其定性诊断提供更多帮助。
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Key words
solitary,Pulmonary nodules,X-ray computed,Tomography
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