System and method for radioactive emission measurement

• US 9,316,743 B2
• Filed: 11/18/2013
• Issued: 04/19/2016
• Est. Priority Date: 11/09/2004
• Status: Active Grant

• Current Assignee: Spectrum Dynamics Medical Ltd
• Original Assignee: Biosensors International Group, Ltd.
• Inventors: Rousso, Benny, Ben-Haim, Shlomo, Ravhon, Ran, Zilberstein, Yoel, Ben-Haim, Simona, Roth, Nathaniel
• Primary Examiner(s): Bryant, Casey
• Application Number:
  US14/082,314
• Publication Number:
  US 20140151563A1
• Time in Patent Office: 883 Days
• US Class Current: 1/1
• CPC Class Codes: A61B 6/037 Emission tomography
• CPC Class Codes: A61B 6/4258 for detecting non x-ray radiation, e.g. gamma radiation A61B6/037 takes precedence
• CPC Class Codes: G01T 1/1603 with a combination of at least two different types of detector see provisionally also G01T1/16
• CPC Class Codes: G01T 1/161 Applications in the field of nuclear medicine, e.g. in vivo counting apparatus for radiation diagnosis A61B6/00
• CPC Class Codes: G01T 1/1647 Processing of scintigraphic data not related to a particular imaging system G01T1/2992

Abstract

Radioimaging methods, devices and radiopharmaceuticals therefor.

Claims

1. A method of using a radioactive emission camera in SPECT imaging, the method comprising:

administering a dose of radiopharmaceutical to a patient;

using a radiation emission camera, obtaining initial SPECT imaging data from a region of the body of said patient to be imaged, said obtaining being in an initial view or sequence of views; and

while continuing to acquire data, analyzing said initial SPECT imaging data to determine further views required to obtain a required image quality of SPECT imaging, wherein said analyzing said initial data to determine further views comprises defining a set of viewing parameter values and wherein said viewing parameter values comprise one member of the group consisting of;

detector photon count;

changes in detector photon count between views;

geometric properties of a reconstructed body structure; and

information theoretic measures defining a data quality.

2. The method of claim 1, wherein said analyzing said initial data to determine further views comprises defining a set of viewing parameters.

3. The method of claim 2, wherein said viewing parameter values further comprise detector saturation.

4. The method of claim 1, wherein said viewing parameters comprise one member of the group consisting of:

detector location;

detector orientation;

collection angle and measurement duration.

5. The method of claim 1, wherein said analysis comprises defining a measurement error comparing a square root of an obtained photon count to said defined measurement error.

6. The method of claim 1, wherein said analysis comprises identifying a pathological feature and said further views comprise a first zoom position towards said identified pathological feature.

7. The method of claim 6, comprising carrying out a further analysis and finding a second zoom position towards said identified pathological feature.

8. The method of claim 1, wherein the required image quality comprises a predetermined image quality.