Table 4.
Image quality: Median values and percent of diagnostic studies
| Image quality |
Median-Patients |
Median-Volunteers |
No loss in diagnostic value |
Non-diagnostic/low diagnostic value |
||||
| Reader 1 | Reader 2 | Reader 1 | Reader 2 | Patients | Volunteers | Patients | Volunteers | |
| non-dpTX 3.0T | 1 | 1 | 1 | 1.5 | 26% | 40% | 74% | 60% |
| dpTX 3.0T | 3 | 3 | 3 | 3 | 98% | 100% | 2% | 0% |
| 1.5T | 3 | 3 | 2.5 | 3 | 94% | 100% | 6% | 0% |
The left half of the table depicts mean values as rated by the two radiologists based on the 4-point ordinal scale in which “3” = good for interpretation without noticeable limitations, “2” = adequate for basic interpretation with minor limitations, “1” = poor for basic interpretation, “0” = non-diagnostic and not adequate for basic interpretation. The right half of the table illustrates the percentage of images deemed to have “No loss in diagnostic value” (scored as ≥ 2) vs “Non-diagnositc/Low Diagnostic Value” (scored as ≤ 1). Numbers in bold are statistically different from the other two numbers within the column.