Imaging of internal structures of living bodies by sensing implanted magnetic devices

The invention provides a system for therapeutic treatment of an organ, tumor, or other internal structure of a living body with therapeutic radiation after implantation, at the organ, of a magnetic element to identify the location of the organ, the element being capable of emitting a magnetic signal...

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Bibliographic Details
Main Authors VON GUTFELD ROBERT JACOB, ZIEGLER JAMES FRANCIS
Format Patent
LanguageEnglish
Published 08.05.2001
Edition7
Subjects
DIAGNOSIS
ELECTROTHERAPY
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MAGNETOTHERAPY
MEDICAL OR VETERINARY SCIENCE
RADIATION THERAPY
SURGERY
ULTRASOUND THERAPY
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Summary:The invention provides a system for therapeutic treatment of an organ, tumor, or other internal structure of a living body with therapeutic radiation after implantation, at the organ, of a magnetic element to identify the location of the organ, the element being capable of emitting a magnetic signal in response to an applied magnetic field. The system comprises a magnetic field generator for irradiating the magnetic element with an applied magnetic field, a movable magnetic field sensor for detecting the magnetic signal from a plurality of selected mutually displaced positions to produce a corresponding plurality of element-locating signals, a computing apparatus for converting the signals to a location image of the internal structure, and a controlled source of therapeutic radiation for focussing a selected degree and duration of therapeutic radiation at a target determined from the location image of the magnetic element. Preferably, the magnetic element is a length of wire of an amorphous magnetic material which produces a magnetic signal that exhibits non-linear Bark+hausen jumps in response to an applied ac magnetic field.
Bibliography:Application Number: US19990241506