Diagnostic value of lung density evaluated by three-dimensional quantitative CT in acute pulmonary embolism(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2020年第2期
- Page:
- 180-184
- Research Field:
- 医学影像物理
- Publishing date:
Info
- Title:
- Diagnostic value of lung density evaluated by three-dimensional quantitative CT in acute pulmonary embolism
- Author(s):
- YU Nan1; SHEN Cong2; JIA Yongjun1; DUAN Haifeng1; HAN Dong1; GUO Youmin2; YU Yong1
- 1. Department of Medical Imaging, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang 712000, China; 2. Department of Medical Imaging, Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710061, China
- Keywords:
- Keywords: acute pulmonary embolism; computed tomography; lung density; CT quantitative analysis
- PACS:
- R318；R563.5
- DOI:
- DOI:10.3969/j.issn.1005-202X.2020.02.009
- Abstract:
- Abstract: Objective To assess the value of lung density evaluated by three-dimensional quantitative CT in the diagnosis of acute pulmonary embolism (APE). Methods The clinical information of patients receiving CT pulmonary angiography (CTPA) was analyzed retrospectively. A total of 195 cases were confirmed as PE and 177 cases were confirmed as non-PE. The CTPA images were analyzed by two radiologists, and the locations of emboli as well as indirect signs were recorded. Results The most common clinical symptoms in PE patients included shortness of breath, cough and chest pain, which accounted for 41%, 39% and 34%, respectively. The 53% of PE patients had clear risk factors. A total of 412 emboli were found. Additionally, the occurrence rates of indirect signs were different in PE patients and non-PE patients (P<0.05), and the related indirect signs included mosaic attenuation (20.3％ vs 0％), ground-glass opacity (23.1% vs 9.4%), lung consolidation (46.7% vs 18.8%), atelectasis (17.2% vs 2.8%), pleural effusion (34.9% vs 23.3%), pleural thickening and adhesion (77.8% vs 25.1%). The analysis on lung density showed that the incidences of local low-density area in PE group and non-PE group were 47.2% and 13.9%, respectively, with significant differences (P<0.05). The coincidence rate of local low-density area and the locations of emboli was 89.2%. Conclusion The local lung density deviations which are quantified on CT scan through three-dimensional quantitative analysis can be combined with the clinical information of PE patients and other indirect signs of CTPA to provide reference for the diagnosis of PE.
Last Update: 2020-03-03