Polyvinyl alcohol cryogel: an ideal phantom material for MR studies of arterial flow and elasticity - PubMed (original) (raw)

Polyvinyl alcohol cryogel: an ideal phantom material for MR studies of arterial flow and elasticity

K C Chu et al. Magn Reson Med. 1997 Feb.

Abstract

The authors present a unique application of polyvinyl alcohol (PVA) cryogel as an anthropomorphic, elastic, vascular phantom material that can be used in MR imaging. The composition consists of two nontoxic ingredients: water and PVA. The biomechanical and MR properties can be adjusted to be similar to those of excised porcine aortas by varying the number of freeze-thaw cycles to which the PVA solution is exposed. The authors present the T1, T2, shrinkage, and tensile properties of PVA cryogel tubes as a function of freeze-thaw cycles. MR images of a dual elastic aortic phantom undergoing pulsatile motion are shown.

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