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- Title
Arterial spin labeling MRI is able to detect early hemodynamic changes in diabetic nephropathy.
- Authors
Mora‐Gutiérrez, José María; Garcia‐Fernandez, Nuria; Slon Roblero, M. Fernanda; Páramo, Jose A.; Escalada, F. Javier; Wang, Danny JJ.; Benito, Alberto; Fernández‐Seara, María A.; Mora-Gutiérrez, José María; Garcia-Fernandez, Nuria; Páramo, Jose A; Fernández-Seara, María A
- Abstract
<bold>Purpose: </bold>To investigate whether arterial spin labeling (ASL) MRI could detect renal hemodynamic impairment in diabetes mellitus (DM) along different stages of chronic kidney disease (CKD).<bold>Materials and Methods: </bold>Three Tesla (3T) ASL-MRI was performed to evaluate renal blood flow (RBF) in 91 subjects (46 healthy volunteers and 45 type 2 diabetic patients). Patients were classified according to their estimated glomerular filtration rate (eGFR) as group I (eGFR > 60 mL/min/1.73 m2 ), group II (60 ≥ eGFR>30 mL/min/1.73 m2 ), or group III (eGFR ≤ 30 mL/min/1.73 m2 ), to determine differences depending on renal function. Studies were performed at 3T using a 12-channel flexible body array combined with the spine array coil as receiver.<bold>Results: </bold>A 28% reduction in cortical RBF was seen in diabetics in comparison with healthy controls (185.79 [54.60] versus 258.83 [37.96] mL/min/100 g, P < 3 × 10-6 ). Differences were also seen between controls and diabetic patients despite normal eGFR and absence of overt albuminuria (RBF [mL/min/100 g]: controls=258.83 [37.96], group I=208.89 [58.83], P = 0.0018; eGFR [mL/min/1.73 m2 ]: controls = 95.50 [12.60], group I = 82.00 [20.76], P > 0.05; albumin-creatinine ratio [mg/g]: controls = 3.50 [4.45], group I = 17.50 [21.20], P > 0.05). A marked decrease in RBF was noted a long with progression of diabetic nephropathy (DN) through the five stages of CKD (χ2 = 43.58; P = 1.85 × 10-9 ). Strong correlation (r = 0.62; P = 4 × 10-10 ) was obtained between RBF and GFR estimated by cystatin C.<bold>Conclusion: </bold>ASL-MRI is able to quantify early renal perfusion impairment in DM, as well as changes according to different CKD stages of DN. In addition, we demonstrated a correlation of RBF quantified by ASL and GFR estimated by cystatin C.<bold>Level Of Evidence: </bold>3 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2017;46:1810-1817.
- Subjects
BLOOD flow measurement; DIABETIC nephropathies; FREE radicals; GLOMERULAR filtration rate; HEMODYNAMICS; KIDNEYS; MAGNETIC resonance imaging; RESEARCH evaluation; RENAL circulation
- Publication
Journal of Magnetic Resonance Imaging, 2017, Vol 46, Issue 6, p1810
- ISSN
1053-1807
- Publication type
journal article
- DOI
10.1002/jmri.25717