Surgery – Truss – Pad
Patent
1989-02-14
1990-11-13
Smith, Ruth S.
Surgery
Truss
Pad
324201, 324204, A61B 505
Patent
active
049694693
ABSTRACT:
An imaging system wherein the subject or patient to be examined is placed in a uniform constant magnetic field which is movable over the patient. A secondary magnetic field is generated by paramagnetic substances within the subject when located within the constant magnetic field. In a human body, the primary paramagnetic substance is deoxygenated blood, whereupon the presence of deoxygenated blood in the constant magnetic field produces the above-mentioned secondary field. The secondary field is detected by a two-dimensional array of magnetic field detectors, in close proximity with the patient, mechanically moved simultaneously with the source of primary magnetic field through a region, whose resulting electrical signals are received and processed by an array processor which operates to provide a reconstructed three-dimensional image. In the preferred embodiment as a medical scanner, the present invention provides three-dimensional imaging of arterial and venous blood throughout the human body.
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patent: 4436684 (1984-03-01), White
Brooks et al., "Principles of Computer Assisted Tomography (CAT) in Radiographic and Radioisotopic Imaging", Phy. Med. Biol. 1976, vol. 21, No. 5, pp. 687-732.
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