The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 1999
Filed:
Nov. 25, 1994
Jay A Stein, Framingham, MA (US);
Steven Teta, Billerica, MA (US);
Donald Barry, Norwood, MA (US);
Richard E Cabral, Tewksbury, MA (US);
Tracy L Ramsdell, Amherst, NH (US);
Tina LeFebvre, Woonsocket, RI (US);
Noah Berger, Waltham, MA (US);
Tom Richardson, Winchester, MA (US);
Eric von Stetten, Sudbury, MA (US);
Howard P Weiss, Newton, MA (US);
Thomas L Kelly, Groveland, MA (US);
Russell J Gershman, Middleborough, MA (US);
Hologic, Inc., Waltham, MA (US);
Abstract
A method of calibrating an ultrasound bone analysis apparatus having a pair of transducer assemblies. Each transducer assembly has a transducer and a coupling pad, and is movable relative to the other so that a face of each pad can be moved to a position in which they mutually contact and to a position where the faces contact body parts. The method according to the present application includes transmitting an ultrasound signal from one transducer and receiving a signal corresponding to the transmitted ultrasound signal through the other transducer when the transducer assemblies are in the first position and the second position. A time for the ultrasound signal to pass through the body part is determined, and a width of the body part based on positions of the transducers is determined. Then, using the time and width values a speed of sound of the ultrasound signal passing through the body part with squish compensation is calculated.