Table 2.
Summary of the different applications that were used clinically, including the most common clinical sites, type of commissioning data used and frequency of ongoing QA
| Application | Number of centres (% of 20 clinical users) | Most common anatomical sites | Length of time in clinical use | Types of commissioning data | Ongoing QA frequency |
|---|---|---|---|---|---|
| Propagate contours from one scan to another | 19 (95%) | Head & neck (17) Prostate (12) Lung, rectum, gynae (eight each) |
<1 year (4) 1–3 years (11) >3 years (4) |
Patient (13) Digital phantom (4) Physical phantom (3) |
Patient-specific (13) None (6) |
| Registering pre-treatment multimodality imaging (e.g., target delineation with PET or MRI) | 10 (50%) | Head & neck (7) Brain, liver, prostate, gynae (two each) |
<1 year (3) 1–3 years (4) >3 years (3) |
Patient (7) Digital phantom (3) Physical phantom (1) |
Patient-specific (6) Monthly (1) Annual (1) None (3) |
| Deform planning CT to daily images | 8 (40%) | Head & Neck (6) Lung, liver, prostate, Gynae (four each) |
<1 year (1) 1–3 years (7) >3 years (0) |
Patient (7) Digital phantom (2) Physical phantom (1) |
Patient-specific (6) None (2) |
| Dose propagation | 7 (35%) | Head & Neck (6), lung (4), prostate (4) | <1 year (1) 1–3 years (6) >3 years (0) |
Patient (5) Digital phantom (2) Physical phantom (1) |
Patient-specific (6) None (1) |
PET, positron emission tomography; QA, quality assurance.