DSA | Fluoroscopy | Roadmap | ||||
Dose setting µGy/frame | Frame rate/second | Dose setting nGy/pulse | Pulse rate/second | Dose setting nGy/pulse | Pulse rate/second | |
Adult default vendor protocol | 2.4 | 3 | 36 | 15 | 45 | 15 |
Adult low-dose protocol | 1.82 | Multiphase 2/s x 4 s, 1/s thereafter | 23 | 3 | 29 | 7.5 |
Pediatric low-dose protocol | 0.54 | Multiphase 2/s x 4 s, 1/s thereafter | 18 | 3 | 23 | 3/7.5 |
Infant protocol | 0.24 | Multiphase 2/s x 4 s, 1/s thereafter | 15 | 3 | 18 | 3/7.5 |
The most substantial variable settings are listed for the initial modifications to the vendor-installed protocols. Furthermore, with increased familiarity with the machine, modifications of the protocols varied considerably during each case depending on the complexity of the particular phase. Switching back and forth between protocols, or varying the pulse and frame rates within a particular fluoroscopy or roadmap protocol, became routine and commonplace.