Feasibility of ADC reflecting enhancement and differentiation of cervical squamous cell carcinomas in multi-b-value DWI on 3.0T MRI
10.13929/j.1003-3289.201607015
- VernacularTitle:3.0T磁共振多b值扩散加权成像ADC值反映宫颈鳞癌强化和分化程度的可行性
- Author:
Kun CAO
;
Shuai WANG
;
Bo ZHAO
;
Yingshi SUN
- Keywords:
Uterine cervical neoplasms;
Diffusion magnetic resonance imaging;
Differentiation grade
- From:
Chinese Journal of Medical Imaging Technology
2017;33(3):423-427
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the feasibility of ADC values that derived from MR DWI with multiple b values in reflecting the amplitude of enhancement and degree of differentiation in cervical squamous cell carcinomas on 3.0T MR scanner.Methods DWI and multiple phase contrast enhanced MRI images of 31 patients with pathologically diagnosed cervical squamous cell carcinomas were retrospectively analyzed.All ADC values in different b values and the amplitude of signal intensity enhancement were measured in various areas of tumors.Correlations of differences of ADCs in high and low b values with early and late enhancement,and the relationship of ADC and differences of ADCs with pathologically tumor differentiation grades were analyzed.Results ADC value in high and low enhanced areas of cervical cancer was inversely related with different b values.Differences of ADCs between low b value (200 s/mm2) and high b values (800,1 000,1 200,1 400 s/mm2) had weak positive correlation with early enhancement (r=0.315-0.339,all P＜0.05).While b=800 s/mm2 and 1 000 s/mm2,ADCs in highly enhanced areas of tumor were significantly lower in well-differentiated cancer lesions compared with those of poorly differentiated cancer lesions.There was no statistically significant of ADC value in other b values,and also of differences of ADCs in all b values in different differentiation foci (all P＞0.05).No differences were found in ADC values under other b values in various degree of differentiation foci,nor in differences of ADCs in all b values (all P＞0.05).Conclusion Combination of multiple b values of DWI may have the potential to reflect blood supply and tumor differentiation grades in cervical squamous cell carcinomas,while low b value of 200 s/mm2 and high b values of 800 s/mm2 and 1 000 s/mm2 will be the preferable choice on 3.0T MR scanner.
