Research Article
The Value of Cerebral CT Angiography with Low Tube Voltage in Detection of Intracranial Aneurysms
Table 1
Subjective image quality assessment.
| Evaluation items | 5 points | 4 points | 3 points | 2 points | 1 point |
| Arterial margin | Smooth | Mild rough | Moderate Rough | Rough | Extensive Rough | Depiction of small arterial details | Best | Better | General | Bad | Worse | Venous contamination |
Least | Less | General | Much | More | Side-branches | Clear | Moderate clear | Mild clear | Rough | Unclear | Perforators | Clear visibility | Moderate visibility | Mild visibility | Hardly visible | Invisible | The whole image quality | Best | Better | General | Bad | Worse | Diagnostic confidence | Sufficient | Less sufficient | General | Insufficient | Unable to diagnose |
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