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

被引：229

作者：

Chu, KC ^{[1
]}

Rutt, BK ^{[1
]}

机构：

[1] JOHN P ROBARTS RES INST,TOM LAWSON FAMILY IMAGING RES LABS,LONDON,ON N6A 5K8,CANADA

来源：

MAGNETIC RESONANCE IN MEDICINE | 1997年 / 37卷 / 02期

关键词：

polyvinyl alcohol (PVA); MR phantoms; elastic arterial models; distensible hydrogels;

D O I：

10.1002/mrm.1910370230

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

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 T-1, T-2, 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.

引用

页码：314 / 319

页数：6

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