Abstract:
:Poly(vinyl alcohol) cryogel, PVA-C, is presented as a tissue-mimicking material, suitable for application in magnetic resonance (MR) imaging and ultrasound imaging. A 10% by weight poly(vinyl alcohol) in water solution was used to form PVA-C, which is solidified through a freeze-thaw process. The number of freeze-thaw cycles affects the properties of the material. The ultrasound and MR imaging characteristics were investigated using cylindrical samples of PVA-C. The speed of sound was found to range from 1520 to 1540 m s(-1), and the attenuation coefficients were in the range of 0.075-0.28 dB (cm MHz)(-1). T1 and T2 relaxation values were found to be 718-1034 ms and 108-175 ms, respectively. We also present applications of this material in an anthropomorphic brain phantom, a multi-volume stenosed vessel phantom and breast biopsy phantoms. Some suggestions are made for how best to handle this material in the phantom design and development process.
journal_name
Phys Med Bioljournal_title
Physics in medicine and biologyauthors
Surry KJ,Austin HJ,Fenster A,Peters TMdoi
10.1088/0031-9155/49/24/009subject
Has Abstractpub_date
2004-12-21 00:00:00pages
5529-46issue
24eissn
0031-9155issn
1361-6560journal_volume
49pub_type
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journal_title:Physics in medicine and biology
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pub_type: 临床试验,杂志文章
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