Quantitative investigation of solitary pulmonary nodules with dynamic contrast enhanced functional CT
- VernacularTitle:动态增强CT对孤立性肺结节的定量研究
- Author:
Minming ZHANG
;
Hua ZHOU
;
Yu ZOU
- Publication Type:Journal Article
- Keywords:
Coin lesion, pulmonary;
Tomography, X-ray computed;
Image enhancement
- From:
Chinese Journal of Radiology
2001;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate solitary pulmonary nodules (SPNs) using quantitative dynamic contrast enhanced functional computed tomography (CT), and to illustrate its clinical efficacy in differential diagnosis between benign and malignant pulmonary nodules.Methods Eighty patients with non-calcified SPNs (diameter, 5-30 mm) were studied with dynamic contrast enhanced CT.Patterns of time-density curve (T-DC) were assessed.The precontrast density, peak height in density (PH: the maximum value of the T-DC), and S/A ratio (the ratio of the PH of SPN over aorta) were recorded.Enhancement patterns of SPNs were also recorded.The perfusion of SPNs was calculated.Results Malignant, benign, and inflammatory nodules showed quite different patterns in T-DC.PH and S/A ratio of the malignant and inflammatory nodules were significantly higher than those of the benign nodules (P
