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Abstract #4355

Image co-registration for respiratory triggered and non-triggered DTI of the transplanted kidney

Maryam Seif 1 , Laila Yasmin Mani 2 , Huanxiang Lu 3 , Mauricio Reyes 3 , Bruno Vogt 2 , Chris Boesch 1 , and Peter Vermathen 1

1 Depts Clinical Research and Radiology, University of Bern, Bern, Bern, Switzerland, 2 Dept. Nephrology, Hypertension and Clinical Pharmacology, Inselspital Bern, Bern, Bern, Switzerland, 3 Institute for Surgical Technology and Biomechanics, University of Bern, Bern, Bern, Switzerland

DTI-scans are performed employing respiratory-triggering in native kidneys to reduce severe physiological motion artifacts caused by respiration. Previous diffusion measurements in transplanted kidneys have been performed with and without controlling for respiratory motion. The aim of this study was to investigate if performing co-registration on non-triggered DTI may allow omitting respiratory triggering for transplanted kidneys. The clear improvement due to co-registration and the small difference between triggered and non-triggered images suggest that patients with renal allografts can be measured without respiratory triggering, but employing co-registration to improve the stability.

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