FIG. 5.

Magnitude, RAPID and PSIR reconstructed cardiac images. In the top row (a–d) patient 1 is shown, in the bottom row (e–h) data from patient 2 is presented. The different columns represent magnitude (a,e), RAPID (b,f), PSIR (c,g) reconstructed and difference (d,h) images, respectively. Good agreements were found for both cases. Tissues with long T₁ like muscle (white arrows) and pericardial fluid were properly identified and inverted by the RAPID algorithm. A suspected apical infarction is also identified by both reconstruction algorithms (dotted black arrows on (f,g)) on patient 2. To facilitate the comparison, locations of the differences were labeled using arrow-heads (b–d,f–h), which were mainly found in tissues isolated by air occupied regions in the lung or impacted by the increased local field inhomogeneity next to the lung.