Vm. Mai et Ss. Berr, MR perfusion imaging of pulmonary parenchyma using pulsed arterial spin labeling techniques: FAIRER and FAIR, J MAGN R I, 9(3), 1999, pp. 483-487
Magnetic resonance imaging of pulmonary parenchyma perfusion using pulsed a
rterial spin labeling (ASL) techniques is presented, ASL uses magnetically
labeled water as an endogenous, freely diffusible tracer, Presented are com
parative results of ASL methods called Flow sensitive Alternating Inversion
Recovery (FAIR), and FAIR with an Extra Radiofrequency pulse (FAIRER), Six
healthy human volunteers were imaged. Perfusion-weighted images at differe
nt time delays, TI, were calculated from the subtraction of the control and
tag images, which were acquired within a single breathhold. Detailed pulmo
nary structures can be visualized with negligible cardiac or respiratory mo
tion artifacts. Different patterns of signal enhancement between the pulmon
ary vessels and parenchyma are shown in the perfusion images acquired at di
fferent TIs, (C) 1999 Wiley-Liss, Inc.