X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1992-11-16
1994-02-15
Porta, David P.
X-ray or gamma ray systems or devices
Specific application
Absorption
378 55, 1286531, A61B 600
Patent
active
052875466
ABSTRACT:
A desitometer gantry may translate in two directions for scanning and may swivel about a vertical axis to allow the radiation angle and the detector-to-patient distance to be altered during a scan so as to provide constant magnification of the image and to align the patient's spine with the radiation beam for more accurate edge measurements. A method of reducing the effects of osteophytes on density measurements applies an iterative threshold based on the density difference between hard and soft tissue.
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Polystar, "Dedicated Interventional X-Ray System With Tilt Table and Integrated C-Arm", Federal Republic of Germany no date.
Philips Medical Systems, "Integris 12000 for Interventional Radiology". No date.
Deluhery James G.
Hanson James A.
Mazess Richard B.
Tesic Mike M.
Lunar Corporation
Porta David P.
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