Defining lost event talley tag packets when PET count rates exceed available acquisition bandwidth
US7983186B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2009 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Mar 31, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/40
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system identifies when received packets are lost at a node in a multi-node processing chain. The system processing chain may include a gantry interface module for receiving coincident event data from a PET (Positron Emission Tomography) detector array, a DMA (direct memory access) rebinner card, and a transmission line coupled between the gantry interface module and the DMA card. FPGA and FIFO elements in each processing portion receive packets that may be lost if there is insufficient FIFO capacity. Lost packets are marked, discarded, and counted. At specified intervals, set in accordance with a threshold number of packets received a lost tally data packet is generated that includes count information for lost packets. The lost tally data packet is forwarded downstream when sufficient storage capacity exists.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.