Quiet diffusion-weighted head scanning: Initial clinical evaluation in ischemic stroke patients at 1.5T

Rösch J, Ott M, Heismann B, Dörfler A, Engelhorn T, Sembritzki K, Grodzki DM (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Book Volume: 44

Pages Range: 1238-1243

Journal Issue: 5

DOI: 10.1002/jmri.25228

Abstract

PURPOSE: To compare the quality and diagnostic value of routine single-shot, echo-planar imaging, diffusion-weighted imaging (ss-EPI-DWI) to those of quiet readout segmented EPI-DWI (q-DWI) in magnetic resonance imaging (MRI) of acute stroke. MATERIALS AND METHODS: Twenty-six patients with acute stroke underwent a 1.5T MRI including diffusion-weighted ss-EPI and q-DWI. The two sequences were protocolled to have identical spatial resolution and spatial coverage. q-DWI was tested with (regular q-DWI) and without (fast q-DWI) averaging in 13 patients each. The acoustic noise generated by each sequence was measured. Quantitative and qualitative assessments regarding signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), lesion conspicuity, level of artifacts, overall image quality as well as diagnostic content were performed. RESULTS: SNR and CNR values of the q-DWI scans were considerably higher than those of ss-EPI DWI (P ≤ 0.0078). No statistical difference was found for lesion conspicuity (P ≥ 0.125). Statistical differences were found for level of artifacts (P ≥ 0.0078) and overall image quality (P ≥ 0.002). Both were evaluated better in the ss-EPI DWI than in the regular and fast q-DWI. Apart from one fast q-DWI patient, radiologists voted the images to have the same diagnostic content, with upper 90% confidence limits of 0.238 for regular q-DWI and 0.429 for fast q-DWI. CONCLUSION: If the acoustic burden is critical to the patient, q-DWI is an equivalent quiet alternative to ss-EPI DWI for use in stroke patients. J. Magn. Reson. Imaging 2016;44:1238-1243.

Authors with CRIS profile

Involved external institutions

Siemens AG, Healthcare Sector Germany (DE)

How to cite

APA:

Rösch, J., Ott, M., Heismann, B., Dörfler, A., Engelhorn, T., Sembritzki, K., & Grodzki, D.M. (2016). Quiet diffusion-weighted head scanning: Initial clinical evaluation in ischemic stroke patients at 1.5T. Journal of Magnetic Resonance Imaging, 44(5), 1238-1243. https://doi.org/10.1002/jmri.25228

MLA:

Rösch, Julie, et al. "Quiet diffusion-weighted head scanning: Initial clinical evaluation in ischemic stroke patients at 1.5T." Journal of Magnetic Resonance Imaging 44.5 (2016): 1238-1243.

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