Effects of different fat suppression techniques on introvoxel incoherent motion parameters of the hip
10.3969/j.issn.1002-1671.2018.12.032
- VernacularTitle:不同脂肪抑制技术对髋部体素内不相干运动成像参数的影响
- Author:
Siwei ZHANG
1
;
Yan HUANG
;
Junjie LIN
;
Shuang LIANG
;
Yunping YI
Author Information
1. 广东省中医院芳村医院影像科
- Keywords:
introvoxel incoherent motion;
magnetic resonance imaging;
fat suppression
- From:
Journal of Practical Radiology
2018;34(12):1941-1944
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the influence of fat suppression technique on the parameters obtained with introvoxel incoherent motion (IVIM)for the normal hip.Methods 47 female volunteers were randomly selected to perform 1.5T MR examination with common sequence and IVIM sequence.The three different Fat suppression techniques:Fat sat,SPAIR and Water Excit were utilized respectively in T2WI sequence and IVIM sequence.The value of signal-to-noise ratio (SNR),contrast-to-noise ratio (CNR),coefficient of variation(CV), ADC,Dfast,Dslowand F values for three methods were calculated and compared quantitatively.The consistency evaluation of these methods were also conducted.Results (1)ADC value and Dslowvalue obtained with the Water Excit method were higher than those with Fat sat and SPAIR statistically(P<0.05),however there was no significant differences between the SNR,CNR,CV,Dfastand F values measured in three fat suppression methods(P>0.05).(2)The results of Fat sat and SPAIR techniques exhibited good consistency.Conclusion In Water Excit technique,overestimation of the ADC and Dslowvalues may be presented,while the IVIM measurement results are not influenced by the use of Fat sat or SPAIR method.
