Publications [#268827] of G. Allan Johnson

Papers Published

1. Pandit, P; Qi, Y; King, KF; Johnson, GA, Reduction of artifacts in T2 -weighted PROPELLER in high-field preclinical imaging., Magn Reson Med, vol. 65 no. 2 (February, 2011), pp. 538-543, ISSN 1522-2594 [20928875], [doi]
   (last updated on 2026/01/14)

   Abstract:
   A simple technique is implemented for correction of artifacts arising from nonuniform T(2) -weighting of k-space data in fast spin echo-based PROPELLER (periodically rotated overlapping parallel lines with enhanced reconstruction). An additional blade with no phase-encoding gradients is acquired to generate the scaling factor used for the correction. Results from simulations and phantom experiments, as well as in vivo experiments in free-breathing mice, demonstrate the advantages of the proposed method. This technique is developed specifically for high-field imaging applications where T(2) decay is rapid.

   Keywords:
   Animals • Artifacts* • Image Enhancement • Lung Neoplasms • Magnetic Resonance Imaging • Mice • Neoplasm Transplantation • Phantoms, Imaging • diagnosis • methods*