Investigating the quantitative fidelity of prospectively undersampled chemical shift imaging in muscular dystrophy with compressed sensing and parallel imaging reconstruction

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
Kieren G HollingsworthVolker Straub

Abstract

Fat fraction measurement in muscular dystrophy has an important role to play in future therapy trials. Undersampled data acquisition reconstructed by combined compressed sensing and parallel imaging (CS-PI) can potentially reduce trial cost and improve compliance. These benefits are only gained from prospectively undersampled acquisitions. Eight patients with Becker muscular dystrophy were recruited and prospectively undersampled data at ratios of 3.65×, 4.94×, and 6.42× were acquired in addition to fully sampled data: equivalent coherent undersamplings were acquired for reconstruction with parallel imaging alone (PI). Fat fraction maps and maps of total signal were created using a combined compressed sensing/parallel imaging (CS-PI) reconstruction. The CS-PI reconstructions are of sufficient quality to allow muscle delineation at 3.65× and 4.94× undersampling but some muscles were obscured at 6.42×. When plotted against the fat fractions derived from fully sampled data, non-significant bias and 95% limits of agreement of 1.58%, 2.17% and 2.41% were found for the three CS-PI reconstructions, while a 3.36× PI reconstruction yields 2.78%, 1.8 times worse than the equivalent CS-PI reconstruction. Prospective undersampling and CS-P...Continue Reading

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Citations

Aug 2, 2015·Diabetologia·Kieren G HollingsworthRoy Taylor
Jul 4, 2015·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Benjamin P BermanAli Bilgin
Feb 7, 2019·European Radiology Experimental·C S de JongeA J Nederveen
May 18, 2019·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Mary A NealPeter E Thelwall
Nov 30, 2019·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Houchun H HuS Sendhil Velan
Oct 9, 2015·Physics in Medicine and Biology·Kieren Grant Hollingsworth
Jul 3, 2017·Journal of Neurology·Jedrzej BurakiewiczKieren G Hollingsworth
Jul 28, 2019·Journal of Neurology·Alison M BarnardGlenn A Walter

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