Method of making phantom for NMR diagnosis

Details Method of making phantom for NMR diagnosis Method of making phantom for NMR diagnosis

1990-08-01

1991-12-10

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

1286535, 264251, 264254, 264255, 264299, 264348, 324307, 324321, B29C 3902, G01V 314

Patent

active

050716026

ABSTRACT:
A method of making a phantom for NMR diagnosis contains the steps of placing at least one small container having at least a portion of its wall made of a thin film of a plastic material in a large container made of a plastic material, charging a first aqueous solution of polyvinyl alcohol into the small container, charging a second aqueous solution of polyvinyl alcohol into a space defined by the outer wall of the small container and the inner wall of the large container, freezing the first and second aqueous solutions of polyvinyl alcohol to obtain frozen masses, and then thawing the frozen masses. A composition of the first aqueous solution of polyvinyl alcohol is different from a composition of the second aqueous solution of polyvinyl alcohol.

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