Efficient single photon emission imaging
First Claim
1. A method of diagnostic imaging in shortened acquisition time for obtaining a reconstructed diagnostic image of a portion of a body of a human patient who was administered with dosage of radiopharmaceutical substance radiating gamma rays, using SPECT (single photon emission computerized tomography), for determination of functional information thereon, comprising the steps of:
- (a) acquiring photons emitted from said portion of the body, by means of at least one detector capable of converting the photons into electric signals, wherein acquiring photons emitted from said portion of the body comprises acquiring adjacent angular projections separated by at least 5 degrees;
(b) processing said electric signals by a position logic circuitry and thereby deriving data indicative of positions on said at least one detector, where the photons have impinged the detector; and
(c) reconstructing a diagnostic image of a spatial distribution of the pharmaceutical substance within the portion of the body by iteratively processing said data.
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Accused Products
Abstract
A method of diagnostic imaging in a shortened acquisition time for obtaining a reconstructed diagnostic image of a portion of a body of a human patient who was administered with dosage of radiopharmaceutical substance radiating gamma rays, using SPECT. The method comprises acquiring photons emitted from said portion of the body, by means of a detector capable of converting the photons into electric signals, wherein the total time of photon acquiring is substantially shorter than the clinically acceptable acquisition time; processing said electric signals by a position logic circuitry and thereby deriving data indicative of positions on said photon detector crystal, where the photons have impinged the detector; and reconstructing an image of a spatial distribution of the pharmaceutical substance within the portion of the body by iteratively processing said data.
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Citations
32 Claims
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1. A method of diagnostic imaging in shortened acquisition time for obtaining a reconstructed diagnostic image of a portion of a body of a human patient who was administered with dosage of radiopharmaceutical substance radiating gamma rays, using SPECT (single photon emission computerized tomography), for determination of functional information thereon, comprising the steps of:
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(a) acquiring photons emitted from said portion of the body, by means of at least one detector capable of converting the photons into electric signals, wherein acquiring photons emitted from said portion of the body comprises acquiring adjacent angular projections separated by at least 5 degrees;
(b) processing said electric signals by a position logic circuitry and thereby deriving data indicative of positions on said at least one detector, where the photons have impinged the detector; and
(c) reconstructing a diagnostic image of a spatial distribution of the pharmaceutical substance within the portion of the body by iteratively processing said data. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of diagnostic imaging in shortened acquisition time for obtaining a reconstructed diagnostic image of a portion of a body of a human patient who was administered with dosage of radiopharmaceutical substance radiating gamma rays, using SPECT (single photon emission computerized tomography), for determination of functional information thereon, comprising the steps of:
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(d) acquiring photons emitted from said portion of the body, by means of at least one detector capable of converting the photons into electric signals, wherein the effective acquisition time is less than 16 minutes;
(e) processing said electric signals by a position logic circuitry and thereby deriving data indicative of positions on said at least one detector, where the photons have impinged the detector; and
(f) reconstructing a diagnostic image of a spatial distribution of the pharmaceutical substance within the portion of the body by iteratively processing said data. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A method of diagnostic imaging in shortened acquisition time for obtaining a reconstructed diagnostic image of a portion of a body of a human patient who was administered with dosage of radiopharmaceutical substance radiating gamma rays, using SPECT (single photon emission computerized tomography), for determination of functional information thereon, comprising the steps of:
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(a) acquiring photons emitted from said portion of the body, by means of at least one detector capable of converting the photons into electric signals, wherein acquiring photons emitted from said portion of the body comprises acquiring angular projections, and wherein the total time of photon acquisition is less than 20 minutes;
(b) processing said electric signals by a position logic circuitry and thereby deriving data indicative of positions on said at least one detector, where the photons have impinged the detector; and
(c) reconstructing an diagnostic image of a spatial distribution of the pharmaceutical substance within the portion of the body by iteratively processing said data. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 32)
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27. A method of shortening acquisition time for obtaining a reconstructed image of a portion of a body of a human patient who was administered with dosage of radiopharmaceutical substance radiating gamma rays, using SPECT (single photon emission computerized tomography), for determination of functional information thereon, comprising the steps of:
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(a) acquiring photons emitted from said portion of the body, by means of a detector capable of converting the photons into electric signals, wherein the total time of photon acquiring is equal or less than three quarters of the clinically acceptable acquisition time;
(b) processing said electric signals by a position logic circuitry and thereby deriving therefrom data indicative of positions on said photon detector crystal, where the photons have impinged the detector; and
(c) reconstructing an image of a spatial distribution of the pharmaceutical substance within the portion of the body by iteratively processing said data.
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Specification