Application of intravoxel incoherent motion diffusion weighted imaging for assessment of early chronic allograft nephropathy.
10.11817/j.issn.1672-7347.2019.05.005
- Author:
Shengwang ZHANG
1
;
Wei WANG
1
;
Zhimin YAN
1
;
Feng PENG
1
;
Ting LI
1
;
Pengfei RONG
1
Author Information
1. Department of Radiology, Third Xiangya Hospital, Central South University, Changsha 410013, China.
- Publication Type:Journal Article
- MeSH:
Allografts;
Diffusion Magnetic Resonance Imaging;
Humans;
Kidney Diseases;
surgery;
Kidney Transplantation;
Magnetic Resonance Imaging;
Motion
- From:
Journal of Central South University(Medical Sciences)
2019;44(5):501-506
- CountryChina
- Language:Chinese
-
Abstract:
To investigate the feasibility and clinical application of intravoxel incoherent motion diffusion weighted imaging (IVIM-DWI) technique in non-invasive assessment for early chronic allograft nephropathy (CAN).
Methods: A total of 23 renal allograft recipients were recruited from inpatients or outpatients according to the inclusion and exclusion criteria for this study. Recipients were divided into a CAN group (n=12, pathologically confirmed early CAN patients) and a control group (n=11, volunteers with long-term stable renal function). Abdominal MRI was performed on patients of renal allograft with a multi-b value DWI sequence. IVIM2b-new software was used for obtaining the IVIM-DWI quantitative parameter pseudo-color maps and the values of IVIM-DWI of renal parenchyma, including the pure diffusion coefficient (D), perfusion correlation diffusion coefficient (D*) and perfusion fraction (f). The IVIM quantitative parameters between the two groups were compared using independent sample t test. ROC analysis was performed when the differences in parameter were statistically significant and the area under curve (AUC) was calculated.
Results: In IVIM bi-exponential analysis, The D value was significantly decreased in the CAN group compared with the control group (P<0.05), whereas there are no significantly difference in value of D* and f between the two groups (all P>0.05). The AUC of D value for distinguishing the early CAN from the control were 0.784 with sensitivity and specificity at 58.3% and 90.9%, respectively.
Conclusion: The IVIM-DWI quantitative parameter D can non-invasively assess early CAN to some extent. IVIM-DWI technique is expected to be an effective, easy and non-invasive method to detect early CAN, and assist early diagnose as well as dynamically monitor CAN.
