Three-Dimensional Computed Tomography in the Evaluation of Small Peripheral Pulmonary Nodules.

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  • 三次元ＣＴ画像を用いた肺野末梢部の肺癌と非癌性病変の鑑別の試み

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Abstract

To facilitate the accurate diagnosis of small peripheral pulmonary nodules (less than 30 mm in diameter), we evaluated the use of three dimensional computed tomography (3D-CT). Conventional CT images and 3D-CT images were studied in 35 patients with peripheral pulmonary nodules (21 lung cancers, 14 benign lesions), prospectively. Conventional CT images were examined by an extended scale (window level -600, window width + 1900) using high resolution images. 3D-CT images were made using TCT-900 S, HELIX software (Toshiba, Tokyo).<BR>Comparison of diagnoses based on CT findings and on pathological findings showed that 3D-CT images were more accurate for detecting involved vessels and displaying in the morphology of the lesions than conventional CT images. The specific features on 3D-CT findings of lung cancers, including the appearance of the margin and the relationship between lesions and surrounding vessels, were different from those of benign lesions.<BR>Our results may suggest that 3D-CT images could have a significant clinical role in differentiating small peripheral pulmonary nodules by demonstrating the relationship between lesions and the surrounding vessels and displaying the morphology of the lesions.

Journal

  • Haigan

    Haigan 33 (7), 1017-1024, 1993

    The Japan Lung Cancer Society

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