On-line correction of patient motion in three-dimensional positron emission tomography
US6947585B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2000 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Mar 14, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1114
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device and method for on-line correction of patient motion in three-dimensional positron emission tomography. The devices encompass an on-line hardware pipelining architecture to support 3D translation, normalization, and weighted histogramming as required. For the 3D translation circuit, a first digital pipeline latch is provided for receiving data as it is collected by the PET scanner. A bank of multiplier circuits receives the PET scan data. Each multiplier circuit receives and multiplies a portion of the entire scan data simultaneous with each other multiplier circuit. The product of each multiplier circuit is output to a second digital pipeline latch. The data is then passed to a bank of adders, each of which supports four input variables. While a specific LOR and a current object orientation are input to the first digital pipeline latch, processing for a different LOR and an earlier object orientation are stored in the second digital pipeline latch. Additionally, fully transformed coordinates from a third LOR are loaded into a third digital pipeline latch. As the banks may each complete their respective tasks under a threshold time limit, the pipelining technique permits th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.