Robust kidney perfusion mapping in pediatric chronic kidney disease using single‐shot 3D‐GRASE ASL with optimized retrospective motion correction
| Autor: | Fabio Nery, Chris A. Clark, Isky Gordon, Enrico De Vita, David L. Thomas |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Adult
Male Image registration Signal-To-Noise Ratio Kidney Pediatrics Renal Circulation 030218 nuclear medicine & medical imaging Motion 03 medical and health sciences Imaging Three-Dimensional 0302 clinical medicine Image Processing Computer-Assisted Humans Medicine Radiology Nuclear Medicine and imaging Renal Insufficiency Chronic Retrospective Studies Kidney perfusion Models Statistical urogenital system business.industry Single shot Reproducibility of Results Repeatability Motion correction medicine.disease Magnetic Resonance Imaging Healthy Volunteers Perfusion Renal blood flow Cohort Female Nuclear medicine business Algorithms 030217 neurology & neurosurgery Kidney disease |
| Zdroj: | Magnetic Resonance in Medicine. |
| ISSN: | 1522-2594 0740-3194 |
| DOI: | 10.1002/mrm.27614 |
| Popis: | Purpose To develop a robust renal arterial spin labeling (ASL) acquisition and processing strategy for mapping renal blood flow (RBF) in a pediatric cohort with severe kidney disease. Methods A single-shot background-suppressed 3D gradient and spin-echo (GRASE) flow-sensitive alternating inversion recovery (FAIR) ASL acquisition method was used to perform 2 studies. First, an evaluation of the feasibility of single-shot 3D-GRASE and retrospective noise reduction methods was performed in healthy volunteers. Second, a pediatric cohort with severe chronic kidney disease underwent single-shot 3D-GRASE FAIR ASL and RBF was quantified following several retrospective motion correction pipelines, including image registration and threshold-free weighted averaging. The effect of motion correction on the fit errors of saturation recovery (SR) images (required for RBF quantification) and on the perfusion-weighted image (PWI) temporal signal-to-noise ratio (tSNR) was evaluated, as well as the intra- and inter-session repeatability of renal longitudinal relaxation time (T1 ) and RBF. Results The mean cortical and/or functional renal parenchyma RBF in healthy volunteers and CKD patients was 295 ± 97 and 95 ± 47 mL/100 g/min, respectively. Motion-correction reduced image artefacts in both T1 and RBF maps, significantly reduced SR fit errors, significantly increased the PWI tSNR and improved the improved the repeatability of T1 and RBF in the pediatric patient cohort. Conclusion Single-shot 3D-GRASE ASL combined with retrospective motion correction enabled repeatable non-invasive RBF mapping in the first pediatric cohort with severe kidney disease undergoing ASL scans. |
| Databáze: | OpenAIRE |
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