薄层CT上纵隔及肺门淋巴结的表现：与层厚5mm CT的比较
Appearances of mediastinal and pulmonary hilar lymph nodes on thin-section CT: comparison with 5 mm slice thickness CT.
作者信息
Nambu Atsushi, Kato Satoshi, Saito Akitoshi, Araki Tsutomu
机构信息
Department of Radiology, University of Yamanashi, Tamaho-cho, Nakakoma-gun, Yamanashi prefecture, Japan.
出版信息
Clin Imaging. 2007 Nov-Dec;31(6):375-8. doi: 10.1016/j.clinimag.2007.05.001.
AIM
This study aimed to evaluate the efficacy of thin-section CT of the mediastinum in the assessment of thoracic lymph nodes in comparison with conventional CT.
MATERIALS AND METHODS
A total of 193 CT examinations from 193 patients with suspected pulmonary disease were reconstructed into thin-section CT and conventional CT. The appearances of the lymph nodes were assessed and compared between thin-section CT and conventional CT.
RESULTS
Intranodal fat was more often detected on thin-section CT than on conventional CT (P<.001). There were no statistically significant differences in the frequencies of inhomogeneous enhancement and bulging margin of the hilar lymph node.
CONCLUSION
Thin-section CT can improve clinical N-staging of lung cancer due to classification of enlarged mediastinal lymph nodes as benign based on identification of intranodal fat.
目的
本研究旨在评估纵隔薄层CT在评估胸部淋巴结方面与传统CT相比的有效性。
材料与方法
对193例疑似肺部疾病患者的193次CT检查进行重建，分别得到薄层CT和传统CT图像。对薄层CT和传统CT上淋巴结的表现进行评估和比较。
结果
薄层CT比传统CT更常检测到淋巴结内脂肪（P<0.001）。肺门淋巴结不均匀强化和边缘膨出的频率在两者之间无统计学显著差异。
结论
薄层CT可通过基于淋巴结内脂肪的识别将增大的纵隔淋巴结分类为良性，从而改善肺癌的临床N分期。
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