Motion compensated renal diffusion weighted imaging

Mctavish S, Van AT, Peeters JM, Weiss K, Makowski MR, Braren RF, Karampinos DC (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Magnetic Resonance in Medicine Wiley

Book Volume: 89

Pages Range: 144-160

Journal Issue: 1

DOI: 10.1002/mrm.29433

Abstract

Purpose: To assess the effect of respiratory motion and cardiac driven pulsation in renal DWI and to examine asymmetrical velocity-compensated diffusion encoding waveforms for robust ADC mapping in the kidneys. Methods: The standard monopolar Stejskal-Tanner pulsed gradient spin echo (pgse) and the asymmetric bipolar velocity-compensated (asym-vc) diffusion encoding waveforms were used for coronal renal DWI at 3T. The robustness of the ADC quantification in the kidneys was tested with the aforementioned waveforms in respiratory-triggered and breath-held cardiac-triggered scans at different trigger delays in 10 healthy subjects. Results: The pgse waveform showed higher ADC values in the right kidney at short trigger delays in comparison to longer trigger delays in the respiratory triggered scans when the diffusion gradient was applied in the feet-head (FH) direction. The coefficient of variation over all respiratory trigger delays, averaged over all subjects was 0.15 for the pgse waveform in the right kidney when diffusion was measured in the FH direction; the corresponding coefficient of variation for the asym-vc waveform was 0.06. The effect of cardiac driven pulsation was found to be small in comparison to the effect of respiratory motion. Conclusion: Short trigger delays in respiratory-triggered scans can cause higher ADC values in comparison to longer trigger delays in renal DWI, especially in the right kidney when diffusion is measured in the FH direction. The asym-vc waveform can reduce ADC variation due to respiratory motion in respiratory-triggered scans at the cost of reduced SNR compared to the pgse waveform.

Involved external institutions

Technische Universität München (TUM) DE Germany (DE) Philips Medical Systems MR Finland FI Finland (FI)

How to cite

APA:

Mctavish, S., Van, A.T., Peeters, J.M., Weiss, K., Makowski, M.R., Braren, R.F., & Karampinos, D.C. (2023). Motion compensated renal diffusion weighted imaging. Magnetic Resonance in Medicine, 89(1), 144-160. https://doi.org/10.1002/mrm.29433

MLA:

Mctavish, Sean, et al. "Motion compensated renal diffusion weighted imaging." Magnetic Resonance in Medicine 89.1 (2023): 144-160.

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