This electronic educational poster will first introduce the concept behind Compressed Sensing - a very powerful MR technique (that has just become commercially available in 2018) allowing for, amongst many different applications, acceleration of MR data acquisition beyond parallel imaging (SENSE, GRAPPA, ASSET). Then, the poster will show comparative clinical examples of application of Compressed Sensing onto commonly used cardiovascular MR sequences such as 1) cine balanced SSFP, both breath-hold and non-breath-hold examinations, 2) cine phase contrast in free-breathing, and 3) respiratory-navigated 3D Whole-Heart examination using T1-weighted fast gradient echo sequence with DIXON technique. In these clinical examples, Compressed Sensing, in addition to parallel imaging, can further accelerate the acquisition time to allow for less number of breath-holds for patients to complete a stack of cine images through the ventricles without sacrificing spatial or temporal resolution or signal-to-noise ratio. The acquisition time of free-breathing cine phase contrast can be reduced and yield accurate flow quantification. The increased speed of acquisition can be traded off to achieve higher spatial resolution in young patients who may not be able to achieve long breath-hold times otherwise needed when high spatial resolution is necessary. These clinical examples were accumulated since January 2017 with a Compressed Sensing software patch made available by the scientific research group of the MR vendor under research agreement and the clinical use was approved by Institutional Review Board.
SPR 2019 Annual Meeting & Postgraduate Course