The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2015
Filed:
Jan. 27, 2011
Craig S. Levin, Palo Alto, CA (US);
Guillem Pratx, Mountain View, CA (US);
Jingyu Cui, Stanford, CA (US);
Sven P. Prevrhal, San Francisco, CA (US);
Craig S. Levin, Palo Alto, CA (US);
Guillem Pratx, Mountain View, CA (US);
Jingyu Cui, Stanford, CA (US);
Sven P. Prevrhal, San Francisco, CA (US);
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
Line segments are classified according to orientation to improve list mode reconstruction of tomography data using graphics processing units (GPUs). The new approach addresses challenges which include compute thread divergence and random memory access by exploiting GPU capabilities such as shared memory and atomic operations. The benefits of the GPU implementation are compared with a reference CPU-based code. When applied to positron emission tomography (PET) image reconstruction, the GPU implementation is 43× faster, and images are virtually identical. In particular, the deviation between the GPU and the CPU implementation is less than 0.08% (RMS) after five iterations of the reconstruction algorithm, which is of negligible consequence in typical clinical applications.