Abstract
Background Despite being the gold standard for left ventricular function evaluation, traditional SSFP sequences still require multiple breath-holds and a relatively long scan time. This extends total duration of the exam, especially in children or adults with impaired cardiopulmonary capacity. We sought to compare a technique employing a prototype sparse sampling with iterative reconstruction (SSIR) for rapid evaluation of the left ventricle (Liu J et al. ISMRM; 2012) in a single breath-hold and freebreathing (FB) compared to traditional SSFP sequences and temporal parallel imaging methods.
Highlights
Despite being the gold standard for left ventricular function evaluation, traditional SSFP sequences still require multiple breath-holds and a relatively long scan time
Patients undergoing routine clinical CMR for iron deposition evaluation with normal myocardial iron were evaluated with five different short axis cine techniques: traditional SSFP with 4-5 breath-holds, temporal parallel acquisition technique with 6-factor acceleration (TPAT6) in two breath-holds, sparse sampling with iterative reconstruction (SSIR) with acceleration factor of 11.5x in one breath-hold, TPAT6 FB and SSIR FB
Using the SSFP sequence as reference, no significant differences were seen among the five sequences for ejection fraction (Table 1)
Summary
Despite being the gold standard for left ventricular function evaluation, traditional SSFP sequences still require multiple breath-holds and a relatively long scan time. This extends total duration of the exam, especially in children or adults with impaired cardiopulmonary capacity. We sought to compare a technique employing a prototype sparse sampling with iterative reconstruction (SSIR) for rapid evaluation of the left ventricle (Liu J et al ISMRM; 2012) in a single breath-hold and freebreathing (FB) compared to traditional SSFP sequences and temporal parallel imaging methods
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