The preliminary study of MR diffusion weighted imaging with background body signal suppression on pulmonary diseases
- VernacularTitle:肺部疾病MR背景抑制扩散成像应用初探
- Author:
Huawei WU
;
Jiejun CHENG
;
Jianrong XU
;
Qing LU
;
Xin GE
;
Lei LI
- Publication Type:Journal Article
- Keywords:
Pulmonary neoplasms;
Pulmonary diseases;
Magnetic resonance imaging;
Diffusinn
- From:
Chinese Journal of Radiology
2008;42(1):56-59
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate maximum intensity projection(MIP) images and apparent diffusion coefficient(ADC) values of MR diffusion weighted imaging with background body signal suppression (DWIBS) on pulmonary diseases.Methods Sixty-one patients with pulmonary diseases underwent DWIBS.The findings in three dimensional(3D) MIP image were observed and the ADC values of diseased region were measured.The diagnostic value of DWIBS on pulmonary diseases was evaluated.Results Lung cancer and inflammatory disease were all demonstrated as dense intensity area on DWIBS.The mean ADC value of central lung cancer was (1.05±0.23)×10-3 mm2/s.The mean ADC value of peripheral lung cancer was(1.10±0.17)×10-3 mm2/s.The mean ADC value of the inflammatory disease was(1.69±0.29)×10-3 mm2/s.The mean ADC value had significant difierence between peripheral lung cancer and the inflammatory disease (P＜0.05). The MR sensitivity,specificity and accuracy in diagnosing the pulmonary diseases with DWIBS(86.84%,82.60%,85.24%,respectively) was higher than conventional MRI(78.94%,78.26%,and 78.68%,respectively).Conclusion DWIBS can demonstrate clearly the lesion's shape with 3D display.The quantitative measurement of ADC values iS feasible.DWIBS may be a potential diagnostic method for differentiation on pulmonary diseases.
