Title:
REFERENCE PHANTOM
Document Type and Number:
Japanese Patent JPS6379638
Kind Code:
A
Abstract:
A reference phantom system for quantitative computer tomography employs a flexible reference phantom with means for urging the flexible reference phantom into contact along the curved surface of the lumbar region of a human patient. In one embodiment, the reference phantom is pre-curved in an arc greater than required. Pressure from the weight of a patient laying upon the reference phantom is effective for straightening out the curvature sufficiently to achieve substantial contact along the lumbar region. The curvature of the reference phantom may be additionally distorted by a resilient pad between the resilient phantom and a table for urging it into contact with the lumbar region. In a second embodiment of the invention, a flexible reference phantom is disposed in a slot in the top of a resilient cushion. The flexibility of the reference phantom and the stiffness of the resilient cushion are matched so that the reference phantom is deformed as it is urged into contact with the lumber region of a patient whereby substantially continuous contact is achieved with the reference phantom along substantially the entire contiguous length of the lumbar region. The resilient cushion and reference phantom may be enclosed in a flexible container. A partially curved reference phantom is a slot in a resilient cushion is also contemplated.
Inventors:
ARUBAATO HENRII ROJIYAA RON
Application Number:
JP18906287A
Publication Date:
April 09, 1988
Filing Date:
July 30, 1987
Export Citation:
Assignee:
GEN ELECTRIC
International Classes:
A61B6/00; A61B6/03; (IPC1-7): A61B6/03
Foreign References:
| US4124799A | 1978-11-07 | |||
| US4233507A | 1980-11-11 |
Attorney, Agent or Firm:
Tokunji Ikunuma
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