US 2010/0163736 A1 · SPECT GAMMA CAMERA WITH A FIXED DETECTOR RADIUS OF ORBIT

Abstract

The current invention presents designs of SPECT gamma cameras without the in-out mechanical motion of the detectors. The elimination of this motion is achieved by the implementation of iterative algorithms, such as Resolution Recovery and/or Wide Beam Reconstruction, which compensate for the Line Spread Function effect due to the collimator characteristics. The use of these methods enables construction of SPECT gamma cameras with a range of novel designs, having their gamma detector (or detectors) orbiting the patient in a predetermined orbit of fixed radius. For example, the radius might be chosen as such that the majority of all patients can be scanned by the system. The shows the advantages of the invention for gamma cameras with any numbers of detectors.

Claims36

Dependent claims

A SPECT gamma camera system, comprising:

at least one gamma detector adapted to orbit in a predetermined fixed radius about a center of rotation in a gantry;
analyzer connected to said at least one gamma detector, for analyzing data collected from said at least one gamma detector and reconstructing a SPECT image, using an iterative algorithm belonging to the RR (Resolution Recovery) family of reconstruction algorithms, that reduce line spread function effect.

Dependencies are inferred from the claim text.

Facts

Application

11/764,152Filed 15 Jun 2007

Priority

25 Nov 2004

Published

1 Jul 2010

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

G01T 1/166
Scintigraphy: involving relative movement between detector and subject
A61B 6/037
Computed tomography [CT]: emission tomography
G01T 1/1611
Applications in the field of nuclear medicine, e.g. in vivo counting: using both transmission and emission sources sequentially
G01T 1/2985
Measurement of spatial distribution of radiation: in depth localisation, e.g. using positron emitters; Tomographic imaging

Spect gamma camera with a fixed detector radius of orbit

Life of this patent

Spect gamma camera with a fixed detector radius of orbit

Life of this patent

Abstract

Claims36