Accelerating Dynamic MRI Using Patch-Based Spatiotemporal Dictionaries

Keywords

able abrupt accelerate accelerating alternating apply atom atoms available axes becomes biomedical bottom buffalo capture captures cardiac central cine composed compressed consecutive consider constraint contains correlations cosine crucial define degree denote denotes dependent details dictionaries dictionary dimension dimensional discrete divided dynamic eight either electrical employing engineering evaluate expected exploit extracts features field fifth fixed formulated frame frames framework free frequency fully gating grant ground heart in vivo indicate indicates initial initialization learning local located making many minimization model motion noises operation operator optimization original overlapping part patch patches pattern performance position precession preserve preserves problem procedure process profiles promising propose proposed random recently reconstruction reconstructions reduction redundant represent representations represented respectively retrospective sampling scanner seek segment segments selection sensing several simplified simulation sliding solutions solve solved space sparse sparsely sparseness sparsity spatial spatially split steady step steps structures subscript suitable suppose temporal temporally transform transforms truth tuning variation variations view whole window zoomed