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Abstract #1242

Removing the Phase-Sensitive Reconstruction Artifacts in Phase-Sensitive Inversion Recovery (PSIR) Sequence

Huijun Chen1, Jinnan Wang2, Chun Yuan1, William S. Kerwin1

1University of Washington, Seattle, WA, United States; 2Philips Research North America, United States

Phase-Sensitive Inversion Recovery (PSIR) has been widely used in cardiac imaging to detect infarcts by providing consistent high contrast between infarcts and normal myocardium. Recently, it has been shown as an improved intraplaque hemorrhage detection tool with good blood suppression and as a possible MRA tool in carotid atherosclerosis imaging. However, considerable amount of reconstruction artifacts can be found in PSIR sequence acquired short Inversion Time (TI). In this abstract, we sought to analyze the cause of these artifacts and propose a solution.

Keywords

abstract achieve acquisition addressed advantage amount analyze application applications approximately artery artifact artifacts assumption atherosclerosis attribute avoided background better blood body breath cardiac carotid cause caused channel coil complex conjugate considerable consistent constant contaminated contamination contrast correct critical custom cycle cycles delay detect detection diagram eddy effectively except exist false fitting free generate generated good gradient half hand healthy hemorrhage hold imperfection improved independent infarcts influence inhomogeneity inside insufficient inversion investigated limit lumen major many moreover must myocardium negative north obvious original overcomes patterns paving positive potential produce produced propose proposed protocols proved providing pulse rather readout real receive recently reconstructed reconstruction recovery reduce removed removing required resolution scanned scanner sensitive separate several severe short shorter simulated simulation solution successfully suing suppress suppressing suppression theory tool totally traditional uniform usual vascular volunteer whole widely yuan