SeHCAT equipment and patient positioning procedures
| SeHCAT procedures | Centres (n=38) |
|---|---|
| System for scanning/measuring SeHCAT retention | |
| Dual head gamma camera (uncollimated) | 32 (84%) |
| Single head gamma camera (uncollimated) | 3 (8%) |
| Whole body counter | 1 (3%) |
| Probe system | 2 (5%) |
| Patient position during first scan | |
| Prone/supine on a gamma camera scanning couch | 24 (63%) |
| Sitting or standing distant from a gamma camera | 8 (21%) |
| Prone/supine on floor/mattress/low bed | 5 (13%) |
| Whole body counter | 1 (3%) |
| Patient set up recorded at day 0 for reproduction at day 7 | |
| Yes | 27 (71%) |
| Views acquired for patient during first scan | |
| Two abdominal views (AP+PA) sequentially | 16 (42%) |
| Two abdominal views (AO+PA) simultaneously | 13 (34%) |
| AP+PA simultaneously in wholebody mode | 6 (16%) |
| ‘Two abdominal views (AP+PA) sequentially’ or ‘Two abdominal views (AO+PA) simultaneously’ | 2 (5%) |
| Other | 1 (3%) |
| Count a standard to compensate for detector drift and/or Se-75 decay | |
| Yes | 6 (16%) |
| Use standard capsule acquisition as quality control measurement* | |
| Yes | 7 (18%) |
| Perform more than one background reading where there is a batch of patients* | |
| Yes | 22 (58%) |
The data are presented as the total number (%) unless specified. Missing data are not reported in the table.
*One centre did not respond.
AO, aorta (abdominal); AP, anteroposterior; PA, posteroanterior; SeHCAT, tauroselcholic (75selenium) acid.