Table 5.
Estimates for the psychometric properties of the first-order constructs for PACS performance
| PACS performance construct | ||||
|---|---|---|---|---|
| Measurement construct | Indicator | λ | AVE | CR |
| 1. Patient service | ||||
| Patient waiting time | Elapsed time between a patients’ arrival at radiology (on appointment) and subsequent exam (MV31) | 0.71 | 0.55 | 0.71 |
| Patient satisfaction | Satisfaction of patients on service delivery (MV32) | 0.77 | ||
| 2. End-user service | ||||
| Physician satisfaction | Satisfaction of referring clinicians on availability of imaging data and associated reports (MV33) | 0.62 | 0.58 | 0.73 |
| User satisfaction | User satisfaction on the current user interface and functionality of PACS (MV34) | 0.88 | ||
| 3. Organizational efficiency | ||||
| Report turnaround time | Sum of time after execution, reporting and the availability of imaging exams’ finalized report of CT exams (MV35) | 0.81 | 0.62 | 0.77 |
| Radiologist productivity | The amount of yearly radiology exams per FTE (MV36) | 0.77 | ||
| Budget ratio | Percentage (over) expenditures of allocated PACS budgets (MV37) | −0.62 | ||
| 4. Diagnostic efficacy | ||||
| Interpretation time | Time to process a series of CT exams (MV38) | −0.14 | 0.65 | 0.79 |
| Diagnostic accuracy | Sufficiency rate of current radiology workspaces for image interpretation (MV39) | 0.93 | ||
| Clinical capability | Workstations capability of displaying uncompressed CT studies (avg. 1,500–2,000 images) without delay (MV40) | 0.67 | ||
| 5. Communication efficacy | ||||
| Patient management | Contribution of PACS towards decision-making in diagnostic processes or treatment plans of patients (MV41) | 0.82 | 0.62 | 0.76 |
| Communication efficacy | PACS contribution towards the communication of critical findings and interdepartmental collaboration (MV42) | 0.76 | ||