IMPROVED THERMOACOUSTIC COMPUTED TOMOGRAPHY SCANNER

Methods and apparatus for measuring and characterizing the localized electromagnetic wave absorption properties of biologic tissues (29) in vivo, using incident electromagnetic waves to produce resultant acoustic waves. Multiple acoustic transducers (33) arranged on a rotatable imaging bowl (14) are...

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Bibliographic Details
Main Author KRUGER, ROBERT A
Format Patent
LanguageEnglish
French
Published 10.08.2000
Edition7
Subjects
DIAGNOSIS
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEDICAL OR VETERINARY SCIENCE
PHYSICS
SURGERY
TECHNICAL SUBJECTS COVERED BY FORMER USPC
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS
TESTING
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Summary:Methods and apparatus for measuring and characterizing the localized electromagnetic wave absorption properties of biologic tissues (29) in vivo, using incident electromagnetic waves to produce resultant acoustic waves. Multiple acoustic transducers (33) arranged on a rotatable imaging bowl (14) are acoustically coupled to the surface of the tissue for measuring acoustic waves produced in the tissue when the tissue is exposed to a pulse of electromagnetic radiation. The multiple transducer signals are then combined to produce an image of the absorptivity of the tissue, which image may be us ed for medical diagnostic purposes. Specific mathematical reconstruction procedures are described for producing images from transducer signals. Specific arrangements of transducers are illustrated, and noise reduction techniques are described.
Bibliography:Application Number: CA20002361076