Research Article
Repeatability and Image Quality of IDEAL-IQ in Human Lumbar Vertebrae for Fat and Iron Quantification across Acquisition Parameters
Table 4
Image quality assessment of each sequence.
| | | Sequence 1 | Sequence 2 | Sequence 3 | Sequence 4 | Sequence 5 | Sequence 6 |
| | Overall | Image quality score | 3.4 (2-5) | 4.9 (3-5) | 3.5 (1-5) | 3.8 (2-5) | 1.8 (1-4) | 2.7 (2-5) | | CV | 17.0% | 9.2% | 21.7% | 13.7% | 33.5% | 23.3% | | FF | SNR | 11.9 (5.2-27.0) | 18.8 (7.0-34.3) | 17.7 (6.3-44.3) | 14.5 (6.8-34.0) | 7.7 (3.9-19.0) | 10.9 (5.0-24.7) | | CV | 38.3% | 36.7% | 49.2% | 39.4% | 42.8% | 39.3% | | CNR | 10.9 (4.8-25.8) | | | | | | | CV | 36.9% | 36.1% | 46.6% | 39.2% | 46.0% | 43.0% | | R2 | SNR | 13.0 (6.5-76.3) | 16.3 (9.2-27.1) | 21.8 (8.4-79.8) | | 6.9 (3.0-43.7) | 10.1 (4.6-23.4) | | CV | 76.8% | 26.1% | 51.8% | 27.5% | 84.3% | 35.3% | | CNR | 12.1 (5.6-76.0) | | 20.5 (7.1-79.5) | | 6.1 (2.2-43.2) | 9.2 (3.4-22.7) | | CV | 83.5% | 28.4% | 56.1% | 30.8% | 96.1% | 39.1% |
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SNR = signal to noise ratio; CNR = contrast to noise ratio; CV = coefficient of variation.
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