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European Radiology

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01-08-2013 | Urogenital

Magnetisation transfer MR imaging of the kidney: evaluation at 3.0 T in association with renal function

Authors: Katsuyoshi Ito, Minoru Hayashida, Shogo Izumitani, Tomoko Fujimine, Takeo Onishi, Katsuhiro Genba

Published in: European Radiology | Issue 8/2013

Abstract

Objective

To evaluate the feasibility of using magnetisation transfer (MT) MRI of the kidney at 3.0 T to assess renal function.

Methods

Forty-four patients who underwent abdominal MRI on a 3.0-T system including gradient-echo (GRE) sequences with and without MT pulse were included. In each patient, MT ratio (MTR) of the renal cortex and medulla was measured by using regions of interest (ROIs) placed on the MTR map image.

Results

Regression analysis showed good correlation between estimated glomerular filtration rate (eGFR) and MTR of the renal cortex (r = −0.645, P < 0.0001). Among 44 patients, 22 were categorised as the normal renal function group and 22 were classified as the decreased eGFR group. The mean MTR of the renal cortex in patients with decreased eGFR (mean MTR, 30.7 ± 3.2 %) was significantly higher (P < 0.0001) than that in patients with normal renal function (mean MTR, 25.3 ± 2.2 %), although the mean MTRs of the renal medulla in the two groups were not significantly different.

Conclusion

There was good correlation between eGFR and MTR of the renal cortex derived from MT MRI at 3.0 T. This technique may have the potential to evaluate the degree of renal function non-invasively in patients with renal impairment.

Key Points

• Magnetisation transfer techniques can provide new information about renal disease.

• MTR values of the renal cortex correlate well with estimated glomerular filtration.

• Higher MTR of the renal cortex exists in patients with renal dysfunction.

• MT MRI at 3.0 T may be useful for evaluating renal function.

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Title: Magnetisation transfer MR imaging of the kidney: evaluation at 3.0 T in association with renal function
Authors: Katsuyoshi Ito
Minoru Hayashida
Shogo Izumitani
Tomoko Fujimine
Takeo Onishi
Katsuhiro Genba
Publication date: 01-08-2013
Publisher: Springer Berlin Heidelberg
Published in: European Radiology / Issue 8/2013
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-013-2841-y

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Magnetisation transfer MR imaging of the kidney: evaluation at 3.0 T in association with renal function

Abstract

Objective

Methods

Results

Conclusion

Key Points

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Objective

Methods

Results

Conclusion

Key Points

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