Kc. Chu et Bk. Rutt, POLYVINYL-ALCOHOL CRYOGEL - AN IDEAL PHANTOM MATERIAL FOR MR STUDIES OF ARTERIAL FLOW AND ELASTICITY, Magnetic resonance in medicine, 37(2), 1997, pp. 314-319
The authors present a unique application of polyvinyl alcohol (PVA) cr
yogel as an anthropomorphic, elastic, vascular phantom material that c
an be used in MR imaging. The composition consists of two nontoxic ing
redients: water and PVA. The biomechanical and MR properties can be ad
justed to be similar to those of excised porcine aortas by varying the
number of freeze-thaw cycles to which the PVA solution is exposed. Th
e authors present the T-1, T-2, shrinkage, and tensile properties of P
VA cryogel tubes as a function of freeze-thaw cycles. MR images of a d
ual elastic aortic phantom undergoing pulsatile motion are shown.