Method and apparatus for the evaluation of cortical bone by comp

Details Method and apparatus for the evaluation of cortical bone by comp Method and apparatus for the evaluation of cortical bone by comp

1995-04-19

1997-01-14

Wong, Don

X-ray or gamma ray systems or devices

Accessory

Testing or calibration

378 54, G01D 1800

Patent

active

055947751

ABSTRACT:
This invention includes a computed tomography (CT) system which has the ability to quantitate cortical bone. Based on a series of specialized phantom measurements, the characteristics of the CT scanner with respect to the evaluation of cortical bone are established. The resulting characteristics provide the input to a specific algorithm that analyzes cross-sectional images containing cortical bone.

REFERENCES:
patent: 5247560 (1993-09-01), Hosokawa et al.
"Constant Cortical Density is a Requirement for the Accurate Measurement of Cortical Thickness by CT" Hangartner et al., Bone and Mineral, Supplement 2 to vol. 25, Apr. 1994, p. S4.
"Measurement of Cortical Bone by Computed Tomography" Hangartner et al., 9th International Bone Bone Densitometry Workshop Abstracts, Sep. 26-30, 1992, p. 30.
Thickness of the Cortical Layer as an Estimate of Mineral Content of Human Finger Bones, by P. Virtama, M.D. et al., vol. XXXIII, No. 385, Roentgen Dept. Second Medical Clinic, University Central Hospital, Helsinki, Aug. 1959.
The Radiological Diagnosis of Osteoporosis: A New Approach, by Ellis Barnett, D.M.R.D., FFR. et al., Department of Radiology and the University Department of Medicine, Gardiner Institute, Western Infirmary, Glasgow, Apr. 1959.
Size of Cortical Bone and Relationship to Bone Mineral Density Assessed by Quantitative Computed Tomography Image Segmentation, Olivia Louis, M.D., Ph.D. et al., Investigative Radiology, vol. 28, No. 9, 802-805, 1993.

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