Iwasawa Tae, Matsushita Shoichiro, Hirayama Mariko, Baba Tomohisa, Ogura Takashi
Department of Radiology, Kanagawa Cardiovascular & Respiratory Center, 6-16-1 Tomioka-higashi, Kanazawa-ku, Yokohama 236-0051, Japan.
Department of Respiratory Medicine, Kanagawa Cardiovascular & Respiratory Center, 6-16-1 Tomioka-higashi, Kanazawa-ku, Yokohama 236-0051, Japan.
Diagnostics (Basel). 2023 Sep 18;13(18):2988. doi: 10.3390/diagnostics13182988.
Thin-section computed tomography (CT) is widely employed not only for assessing morphology but also for evaluating respiratory function. Three-dimensional images obtained from thin-section CT provide precise measurements of lung, airway, and vessel volumes. These volumetric indices are correlated with traditional pulmonary function tests (PFT). CT also generates lung histograms. The volume ratio of areas with low and high attenuation correlates with PFT results. These quantitative image analyses have been utilized to investigate the early stages and disease progression of diffuse lung diseases, leading to the development of novel concepts such as pre-chronic obstructive pulmonary disease (pre-COPD) and interstitial lung abnormalities. Quantitative analysis proved particularly valuable during the COVID-19 pandemic when clinical evaluations were limited. In this review, we introduce CT analysis methods and explore their clinical applications in the context of various lung diseases. We also highlight technological advances, including images with matrices of 1024 × 1024 and slice thicknesses of 0.25 mm, which enhance the accuracy of these analyses.
薄层计算机断层扫描(CT)不仅广泛用于评估形态,还用于评估呼吸功能。从薄层CT获得的三维图像可提供肺、气道和血管容积的精确测量。这些容积指数与传统肺功能测试(PFT)相关。CT还能生成肺直方图。低衰减区和高衰减区的容积比与PFT结果相关。这些定量图像分析已被用于研究弥漫性肺疾病的早期阶段和疾病进展,从而产生了诸如慢性阻塞性肺疾病前期(pre-COPD)和间质性肺异常等新概念。在2019冠状病毒病大流行期间,当临床评估受到限制时,定量分析被证明特别有价值。在本综述中,我们介绍CT分析方法,并探讨其在各种肺部疾病中的临床应用。我们还强调了技术进步,包括具有1024×1024矩阵和0.25毫米层厚的图像,这些提高了这些分析的准确性。