Mean SNR, ADC values and corresponding image quality scores of the normal lumbar vertebra measured by two different DWI sequences
| Sequence | P | ||
|---|---|---|---|
| EPI-DWI | Non-CPMG SS-FSE DWI | ||
| SNR | 5.83 ± 2.2 | 11.68 ± 2.87 | <.01 |
| ADC (× 10−3 s/mm2) | 0.53 ± 0.15 | 0.35 ± 0.15 | <.01 |
| Image quality scores | 1.98 ± 0.18 | 3.03 ± 0.19 | <.05 |
Note:—SNR indicates signal-to-noise ratio; ADC, apparent diffusion coefficient; DWI, diffusion-weighted imaging; EPI, echo-planar imaging; non-CPMG, non–Carr-Purcell-Meiboom-Gill; SS-FSE, single-shot fast spin-echo.
Data are presented as mean ± SD. ADC values were calculated for a “b” value of 600 mm2/s.