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计算机断层扫描（CT）衰减值及CT表现对胸腔积液鉴别诊断的效能

Efficacy of Computed Tomography (CT) Attenuation Values and CT Findings in the Differentiation of Pleural Effusion.

作者信息

Yalçin-Şafak Kadihan, Umarusman-Tanju Neslihan, Ayyıldız Muhammet, Yücel Nihal, Baysal Tamer

机构信息

Department of Radiology, Kartal Dr Lütfü Kırdar Training and Research Hospital, Istanbul, Turkey.

Department of Biochemistry, Kartal Dr Lütfü Kırdar Training and Research Hospital, Istanbul, Turkey.

出版信息

Pol J Radiol. 2017 Feb 19;82:100-105. doi: 10.12659/PJR.898963. eCollection 2017.

DOI:10.12659/PJR.898963
PMID:28289482
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5330209/
Abstract

BACKGROUND

The aim of this study was to investigate the efficacy of computed tomography (CT) findings for characterizing pleural effusions with the use of attenuation values.

MATERIAL/METHODS: One hundred and twenty eight patients with pleural effusions on thoracic CT who underwent thoracentesisis within two weeks were studied. Pleural effusions were classified as exudates or transudates according to the Light's criteria. A region of interest was placed for the measurement of Hounsfield Unit (HU) values in the area of the greatest amount of effusion on each slice of the three slices used. CT features that were evaluated for distinguishing pleural exudates from transudates included pleural nodules, pleural thickening and loculation.

RESULTS

Thirty three (26%) of the 128 pleural effusions were transudates and 95 (74%) were exudates. The mean HU values of the exudates (8.82±7.04) were significantly higher than those of the transudates (2.91±8.53), (p<0.001). No statistically significant difference was found between transudate and exudate patients in terms of pleural thickness, pleural nodules and loculation (p>0.05).

CONCLUSIONS

HU values can help in differentiating exudative pleural effusions from transudative pleural effusions. Because of overlapping HU values, correlation with clinical findings is essential.

摘要

背景

本研究的目的是利用衰减值来研究计算机断层扫描（CT）结果对胸腔积液特征的诊断效能。

材料/方法：对128例胸部CT显示有胸腔积液且在两周内接受胸腔穿刺术的患者进行研究。根据Light标准将胸腔积液分为渗出液或漏出液。在使用的三层扫描图像中，于积液量最大区域放置感兴趣区，测量其亨氏单位（HU）值。评估用于区分渗出性胸腔积液和漏出性胸腔积液的CT特征包括胸膜结节、胸膜增厚和胸腔分隔。

结果

128例胸腔积液中，33例（占26%）为漏出液，95例（占74%）为渗出液。渗出液的平均HU值（8.82±7.04）显著高于漏出液（2.91±8.53），（p<0.001）。在胸膜厚度、胸膜结节和胸腔分隔方面，漏出液患者与渗出液患者之间未发现统计学显著差异（p>0.05）。

结论

HU值有助于区分渗出性胸腔积液和漏出性胸腔积液。由于HU值存在重叠，与临床结果的相关性至关重要。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/13d8/5330209/52536178d05c/poljradiol-82-100-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/13d8/5330209/bc52cf0f683b/poljradiol-82-100-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/13d8/5330209/52536178d05c/poljradiol-82-100-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/13d8/5330209/bc52cf0f683b/poljradiol-82-100-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/13d8/5330209/52536178d05c/poljradiol-82-100-g002.jpg

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