Image analysis – Applications – Biomedical applications
Reexamination Certificate
2005-09-20
2005-09-20
Couso, Jose L. (Department: 2621)
Image analysis
Applications
Biomedical applications
C250S363040, C378S004000, C378S021000
Reexamination Certificate
active
06947585
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 the entire 3D transformation for the AB pair to take place in real time. Further, on-line normalization and on-line weighted histogramming are also performed in real time.
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Lu Tom Y.
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