Method and apparatus for radiopharmaceutical-guided biopsy
AssigneeThe Regents of the University of Michigan
InventorsRaymond R. Raylman, Richard L. Wahl
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Abstract
A medical method and apparatus for the localization and biospy of lesions in a patient body part. A radiopharmaceutical is administered to the patient followed by placement of the body part within a scanner for obtaining emission data. The emission data is converted into Cartesian coordinates which are used to guide a sampling instrument for the biopsy of said lesion.
Claims21
A method for the localization and biopsy of lesions, comprising the steps of:
- a) providing i) a patient having a body part with a suspected lesion, ii) a radiopharmaceutical, iii) means for obtaining emission data from said body part of said patient;
- b) administering said radiopharmaceutical to said patient;
- c) placing said body part within said means for obtaining emission data, to detect a radiation signal created by the accumulation of said radiopharmaceutical in said lesion;
- d) obtaining the sinogram space coordinates generated by said means for obtaining emission data for said radiation signal;
- e) converting said sinogram space coordinates into cylindrical coordinates;
- f) converting said cylindrical coordinates into Cartesian coordinates corresponding to said lesion;
- and
- g) guiding a means for biopsying said lesion using said Cartesian coordinates.
A method for the localization and biopsy of lesions, comprising the steps of:
- a) providing i) a patient having a body part with a suspected lesion, ii) a radiopharmaceutical, iii) means for obtaining emission data from said body part of said patient, iv) a display means, and v) a user input means;
- b) administering said radiopharmaceutical to said patient;
- c) placing said body part within said means for obtaining emission data, to detect a radiation signal created by the accumulation of said radiopharmaceutical in said lesion;
- d) choosing at least a first and a second view angle with said user input means;
- e) extracting at least one projection based on said first and second view angles;
- f) displaying an image of said lesion on said display means based on said projection;
- g) prompting a user to identify via said input means a point within said lesion;
- h) calculating a center of said identified lesion;
- i) obtaining sinogram space coordinates of said identified lesion based on said first and second view angles;
- j) converting said sinogram space coordinates into cylindrical coordinates;
- k) converting said cylindrical coordinates into Cartesian coordinates corresponding to said lesion;
- and
- l) guiding a means for biopsying said lesion using said Cartesian coordinates.
An apparatus for the localization and biopsy of a lesion in a body part, comprising:
- a) means for obtaining emission data created by the accumulation of a radiopharmaceutical in said lesion, under conditions such that scanner space coordinates are generated;
- b) converting means coupled to said means for obtaining emission data for calculating x, y and z Cartesian coordinates of said lesion from said scanner space coordinates generated by said means for obtaining emission data;
- and
- c) means for biopsying said lesion located at said Cartesian coordinates.
Dependencies are inferred from the claim text.