| 张国晋,曹云太,张婧,赵志勇,张文娟,黄乐乐,周俊林.局灶性机化性肺炎及周围型肺癌能谱CT表现[J].中国医学影像技术,2020,36(9):1330~1334 |
| 局灶性机化性肺炎及周围型肺癌能谱CT表现 |
| Spectral CT findings of focal organizing pneumonia and peripheral lung cancer |
| 投稿时间：2019-11-14 修订日期：2020-04-27 |
| DOI：10.13929/j.issn.1003-3289.2020.09.014 |
| 中文关键词: 肺肿瘤 肺炎 诊断,鉴别 体层摄影术,X线计算机 能谱成像 |
| 英文关键词:lung neoplasms pneumonia diagnosis, differential tomography, X-ray computed spectral imaging |
| 基金项目:甘肃省医学影像重点实验室开放基金项目（GSYX202010）、兰州市人才创新创业项目（2016-RC-58）。 |
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| 中文摘要: |
| 目的 观察局灶性机化性肺炎（FOP）和周围型肺癌（PLC）的能谱CT表现。方法 回顾性分析40例经病理证实的FOP（FOP组）和60例PLC患者（PLC组），均接受胸部双期能谱CT检查。测量并记录病灶动脉期及静脉期单能量图像CT40~100 keV值（HU）、碘（水）值、水（碘）值及有效原子序数，绘制相应能谱曲线，计算能谱曲线斜率（λHU）；比较2组各定量参数的差异。结果 2组患者年龄、性别、临床症状、病灶大小及位置差异均无统计学意义（P均>0.05）。PLC组动脉期CT40 keV、CT50 keV、CT60 keV及CT 70 keV值、λ70 keV、碘（水）值、有效原子序数均高于FOP组（t=3.46、3.08、3.08、2.03、2.32、2.69、2.73，P均<0.05）；静脉期CT40 keV、CT50 keV、CT60 keV及CT 70 keV值、λ70 keV、碘（水）值、有效原子序数均低于FOP组（t=-3.51、-3.82、-3.01、-2.30、-2.76、-2.40、-2.43，P均<0.05）；其余动脉期及静脉期能谱参数值组间差异均无统计学意义（P均>0.05）。结论 FOP与PLC能谱CT表现存在一定差异，可为鉴别诊断提供参考。 |
| 英文摘要: |
| Objective To observe the energy spectral CT manifestations of focal organizing pneumonia (FOP) and peripheral lung cancer (PLC). Methods Data of 40 patients with FOP (FOP group) and 60 patients with PLC (PLC group) confirmed by pathology who underwent chest dual-phase energy spectral CT were retrospectively analyzed. CT40~100 keV values on single energy images, iodine concentration, water concentration and effective atomic number at arterial and venous phase of lesions were measured and recorded, respectively. The corresponding energy spectral curve was drawn, and the slope of the curve was calculated. The quantitative parameters were compared between 2 groups. Results There was no statistically differences of patients' age, gender, clinical symptoms nor lesions' size or location between 2 groups (all P>0.05). CT40 keV, CT50 keV, CT60 keV and CT70 keV values, λ70 keV, iodine concentration, effective atomic number at arterial phase in PLC group were all higher than those in FOP group (t=3.46, 3.08, 3.08, 2.03, 2.32, 2.69, 2.73, all P<0.05), while at venous phase in PLC group were all lower than those in FOP group (t=-3.51, -3.82, -3.01, -2.30, -2.76, -2.40, -2.43, all P<0.05). No statistical difference of other energy spectrum parameters at arterial phase or venous phase was found between 2 groups (all P>0.05). Conclusion Energy spectral CT findings of FOP and PLC had certain difference, providing references for differential diagnosis of FOP and PLC. |
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