New polyvinyl alcohol gel material for MRI phantoms

Nambu PVA gel which is produced by repeated freezing and thawing of PVA solution has overcome almost all of the problems which present substances have: (1) It is close to human soft tissue in MRI parameters. (2) MRI parameters (1H density, T1, T2) are adjustable to some extent. (3) It has appropriat...

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Veröffentlicht in:	Magnetic resonance in medicine 1986-12, Vol.3 (6), p.921-926
Hauptverfasser:	Mano, Isamu, Goshima, Hitoshi, Nambu, Masao, Iio, Masahiro
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences Cold Temperature Gels Graphite - administration & dosage Image Enhancement Investigative techniques, diagnostic techniques (general aspects) Magnetic Resonance Spectroscopy Medical sciences Miscellaneous. Technology Models, Structural Nickel - administration & dosage Polyvinyl Alcohol - analysis Radiodiagnosis. Nmr imagery. Nmr spectrometry Water - analysis
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Beschreibung
Zusammenfassung:	Nambu PVA gel which is produced by repeated freezing and thawing of PVA solution has overcome almost all of the problems which present substances have: (1) It is close to human soft tissue in MRI parameters. (2) MRI parameters (1H density, T1, T2) are adjustable to some extent. (3) It has appropriate physical characteristics. The important problem with PVA gel is long‐term stability. It is assumed that this problem can be solved by its periodic calibration and replacement. © 1986 Academic Press, Inc.
ISSN:	0740-3194 1522-2594
DOI:	10.1002/mrm.1910030612