Three-dimensional, time-resolved (4D) relative pressure mapping using magnetic resonance imaging.
We describe here a method for generating relative pressure maps from magnetic resonance velocity data in three spatial and one temporal dimension (4D). The relative pressure map calculated for pulsatile flow in a compliant phantom was shown to be consistent with independent pressure transducer measurements. The feasibility of performing 4D pressure mapping in vivo is also demonstrated.
Tyszka
J M
JM
Department of Imaging, Cedars-Sinai Medical Center, Los Angeles, California 90048, USA. mtys3ka@coh.org
Laidlaw
D H
DH
Asa
J W
JW
Silverman
J M
JM
D001013:Aorta, Thoracic / Q000502:physiology*; D001783:Blood Flow Velocity; D001794:Blood Pressure / Q000502:physiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods*; D019047:Phantoms, Imaging; D011673:Pulsatile Flow; D014159:Transducers