Figure 2

Values of the partition-DRA (PDRA) width (in number of pixels) in the conical numerical phantom, reconstructed at varying boundary angles (θ _B ) and number of secondary phase-encode steps (partitions) (N _p ). The PDRA width was determined through automatic detection of negative intensity deviation from the programmed myocardial value at the subendocardial layer. For the angles investigated, reconstructions with N_p < 8 were not scored, as partial volume effects became sufficiently strong to obscure the myocardium (see Figure 1). Excluding these cases, the PDRA widths increased with both reduced N_p (corresponding to coarser through-plane resolution) and increased θ_B.