Duman IE, Cimsit C, Yildizeli SO, Cimsit NC. Parenchymal density changes in acute pulmonary embolism: Can quantitative CT be a diagnostic tool? A preliminary study.
Clin Imaging 2016;
41:157-163. [PMID:
27855350 DOI:
10.1016/j.clinimag.2016.11.005]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 09/25/2016] [Accepted: 11/04/2016] [Indexed: 11/17/2022]
Abstract
PURPOSE
Determine the ability of quantitative CT (QCT) in defining parenchymal density changes in acute pulmonary embolism (PE).
MATERIAL & METHODS
Mean lung density (MLD) and percentage distribution values (PDV) were calculated in 34 patients suspected of PE using software application based on computerized volumetric anatomical segmentation.
RESULTS
Total, left, and right MLD differed significantly between emboli positive(n=23) and negative(n=11) groups(p<0.006, p<0.009, p<0.014). PDVs differed between groups (p<0.05) except for LUZ and RLZ. When PE was present in lobe &/segment branches, PDVs were significantly lower except RUZ.
CONCLUSION
QCT is a promising application for defining parenchymal density changes in PE revealing potential functional impact of emboli. This preliminary study suggests QCT could provide added value to CTPA in peripheral PE.
Collapse