Claims
- 1. An imaging system for producing images of an object, comprising:
- means for generating a first magnetic field producing a flux path positioned to substantially include said object having a paramagnetic substance in said magnetic flux path, causing said paramagnetic substance to produce a second magnetic field therefrom in response to said first magnetic field;
- means for receiving said paramagnetic substance induced second magnetic field and producing a plurality of detector signals therefrom;
- means for moving both said means for generating and said means for receiving in concert relative to said object;
- an array processor means for receiving said detector signals and selectively producing display signals therefrom; and
- display signals means for receiving said display and producing a man-readable representation therefrom, wherein
- said first magnetic field includes a substantially constant magnetic field component.
- 2. A system for imaging tissue having a plurality of regions of selective magnetic susceptibility, comprising:
- means for energizing said areas of selective magnetic susceptibility to produce a varying magnetic field, wherein said magnetic field is variable according to said areas of selective magnetic susceptibility;
- a plurality of sensors arranged to define an area described by two coordinates and located in proximity to said tissue, wherein each sensor receives at least a portion of said varying magnetic fields of said areas of selective magnetic susceptibility and producing a sensor signal corresponding thereto; and
- means to reconstruct a model of magnetic susceptibility of the regions of said tissue wherein structural information of said tissue is related to said model of magnetic susceptibility.
- 3. The system of claim 2, wherein
- said means for energizing comprises a means to generate a first magnetic field, wherein said regions of selective magnetic susceptibility provides a radiated second magnetic field in response to said first magnetic field, said second magnetic field being received by said plurality of sensors.
- 4. The system of claim 3, wherein
- said regions of selective magnetic susceptibility include regions of paramagnetic material.
- 5. The system of claim 2, further including
- means to move said means for energizing and said plurality of sensors in concert through a region including said tissue.
- 6. The system of claim 2, wherein
- each said plurality of sensors comprises a plurality of magnetic sensors arranged to detect magnetic fields in orthogonal relationships.
- 7. A method of imaging the paramagnetic constituents of a body in three dimensions comprising the steps of:
- providing a first magnetic field through said body;
- radiating a second magnetic field from said body in response to said first magnetic field and the paramagnetic properties of the constituents of said body;
- detecting said second, magnetic field by a plurality of detectors to produce a plurality of detector signals therefrom, said second magnetic field being paramagnetically induced;
- processing said plurality of detector signals to produce an image signal therefrom; and
- providing a representation of said paramagnetic constituents according to said image signal.
- 8. The method of claim 7, further including the step of
- moving said first magnetic field and said plurality of detectors simultaneously to cause cancellation of the effects of said first magnetic field at said plurality of detectors.
- 9. An imaging system for producing images of an object, comprising:
- means for generating a first magnetic field comprising a varying magnetic field, producing a flux path positioned to substantially include said object having a paramagnetic substance in said magnetic flux path, causing said paramagnetic substance to produce a second magnetic field therefrom in response to said first magnetic field;
- means for receiving said paramagnetic substance induced second magnetic field and producing a plurality of detector signals therefrom;
- means for moving both said means for generating and said means for receiving in concert relative to said object;
- an array processor means for receiving said detector signals and selectively producing display signals therefrom; and
- display means for receiving said display signals and producing a man-readable representation therefrom, wherein
- said second magnetic field includes components at the frequency of said varying first magnetic field, and
- said array processor means provides said display signals according to said paramagnetic substance induced second magnetic field components, those components occurring at the frequency of said varying first magnetic field.
Parent Case Info
This application is a continuation of application Ser. No. 06/679,884, filed Dec. 10, 1984, now abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
8103226 |
Nov 1981 |
WOX |
Non-Patent Literature Citations (1)
Entry |
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. |
Continuations (1)
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Number |
Date |
Country |
Parent |
679884 |
Dec 1984 |
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