A primary study of slice optimization of dynamic contrast-enhanced CT scan and its practical application on solitary pulmonary nodules
- VernacularTitle:孤立性肺结节CT动态增强扫描的层面优化及临床应用
- Author:
Liangping LUO
;
Chunxian CAI
;
Hejia WU
;
Jincheng CHEN
- Publication Type:Journal Article
- Keywords:
Coin lesion,pulmonary;
Tomography,X-ray computed;
Image processing,computer-assisted
- From:
Chinese Journal of Radiology
2000;0(12):-
- CountryChina
- Language:Chinese
-
Abstract:
0.05).(2)In 67 cases with pre-and post-image selection and reconstruction in single-slice or twin-slice helical CT,the slice concordance rate in measurement was 20.98% and 97.01%,respectively(?2=80.22,P=0.00).The slice concordance was all accomplished with the same method in multi-slice helical CT in 5 cases.(3)Peak heights and SPN-to-aorta ratios of malignant [(38.48?14.32)HU,(19.64?9.52)% ] and inflammatory SPN [(42.48?11.55)HU,(21.14?7.77)%] were significantly higher than that of benign SPN [(9.52?3.78)HU,(3.41?1.86)%,P0.05).Slice optimization of dynamic contrast-enhanced CT scan improved the diagnostic accuracy of SPN from 78% to 80%.Conclusion No significant efficacy was found in the attenuation between primitive images and reconstructive images with the same slice thickness of homogenous material.Slice concordance of dynamic contrast enhanced spiral CT could reflect objectively the morphological appearance and CT value changes of solitary pulmonary nodules,and may improve the veracity of diagnosis.
