Bolus not detected and No command to inject Due to IPG2 Board.

Bolus Not Detected and no Command to Inject See long description for details. For about a week on 4-5 different patients, the site experienced a problem when attempting to use smartprep. Different protocols were used as different types of run-off sequences were scanned. Prior to the injected part of the study, the system would acquire baseline data. They would never receive the command to inject as the bolus was not detected. The system would sometimes lock up, requiring reboot. One instance, they scanned an Aorta where the bolus was detected, the tracker was very low on the anatomy and the contrast never made it down to the tracker, but they were commanded to inject. Renals failed 3 different times. The site had strange advisory errors during the trouble time: "RBW 16" accept or decline. When accepted, it would wipe out their protocol parameters. "Support routine peak B1 failed." Both errors were not in error log. The Errors that were found in the log; Fri Feb 3 08:48:32 2006 Error: 2224944 Host: lx-mr Process: NSP File: HPC_PORT_ID:hpc_rep_stop Line: 560 Internal PSD Programming Error. It may be necessary to reset TPS. PCT informed HPC that it had stopped, but its internal state indicates it is still running. Fri Feb 3 08:48:48 2006 Error: 2224583 Host: lx-mr Process: NSP File: TPS:aps_cf Line: 15 Auto Prescan failed, possible data acquisition failure. Fri Feb 3 08:48:48 2006 Error: 2227710 Host: lx-mr Process: NSP Fri Feb 3 08:48:48 2006 Error: 2224666 Host: lx-mr Process: psc File: PscMainControl.cc Line: 1322 Auto Prescan failed, possible data acquisition error. Try again or use Manual Prescan. Fri Feb 3 08:57:27 2006 Error: 2218650 Host: lx-mr Process: scn File: RxManagerCB.c Line: 423 Scn: No of Successful Scan = 9 , No of Failed Scan = 0 Fri Feb 3 09:43:31 2006 Error: 2217489 Host: lx-mr Process: ifcc File: PsdError.cc Line: 450 Response from PSD not received within timeout period.