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首页> 外文期刊>Academic radiology >3D-CT volumetry of the lung using multidetector row CT: comparison with pulmonary function tests.
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3D-CT volumetry of the lung using multidetector row CT: comparison with pulmonary function tests.

机译：使用多排行CT的3D-CT肺部容积检查：与肺功能测试的比较。

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RATIONALE AND OBJECTIVES: The aim of this study was to evaluate the accuracy of measurements of lung volumes reconstructed using three-dimensional computed tomographic (CT) imaging from thin-section multidetector-row CT images compared to standard pulmonary function testing. MATERIALS AND METHODS: Preoperative three-dimensional CT images and pulmonary function test results of 64 patients with solitary pulmonary nodules who were considered candidates for lung resection were reviewed. On the three-dimensional CT images, total lung capacity (TLC(CTV)), emphysematous lung capacity (ELC(CTV)), and normal lung capacity (NLC(CTV)) were calculated. Total lung capacity (TLC), vital capacity, and forced expiratory volume in 1 second were measured using spirometry. RESULTS: There was a strong positive correlation between estimated TLC(CTV) and measured TLC values (r = 0.87, P < .001). Estimated ELC(CTV) at the threshold value of -900 Hounsfield units was negatively correlated with forced expiratory volume in 1 second (r = -0.56, P < .001). NLC(CTV) values were more strongly correlated with vital capacity values than TLC(CTV) values (r = 0.74, P < .001). CONCLUSIONS: Lung volume calculated using three-dimensional CT volumetry was well correlated with lung volume measured using spirometry. Three-dimensional CT volumetry can be used to evaluate pulmonary function.
机译：理由和目的：这项研究的目的是评估与标准肺功能测试相比，使用薄层多排行CT图像的三维计算机断层扫描（CT）成像重建的肺容积测量的准确性。材料与方法：回顾了64例孤立肺结节患者的术前三维CT图像和肺功能检查结果，这些患者被认为是肺切除的候选人。在三维CT图像上，计算了总肺容量（TLC（CTV）），气肿性肺容量（ELC（CTV））和正常肺容量（NLC（CTV））。使用肺量测定法测量1秒钟内的总肺活量（TLC），肺活量和强制呼气量。结果：估算的TLC（CTV）与测得的TLC值之间存在很强的正相关性（r = 0.87，P <.001）。在-900 Hounsfield单位的阈值处估计的ELC（CTV）与1秒内的呼气量呈负相关（r = -0.56，P <.001）。 NLC（CTV）值与肺活量的相关性比TLC（CTV）值更强（r = 0.74，P <.001）。结论：三维CT容积法计算的肺容积与肺活量测定法测得的肺容积密切相关。三维CT容积法可用于评估肺功能。

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