Table 4 FWHM of different slice thicknesses measured by the nMAG gel dosimeter and Gafchromic film at 120 kVp.
From: Dose and slice thickness evaluation with nMAG gel dosimeters in computed tomography
FWHM (mm) | 2 mm | 5 mm | 10 mm | 14.4 mm | 38.4 mm |
|---|---|---|---|---|---|
Center | |||||
Film | 2.92 | 5.76 | 11.93 | 31.75 | 71.38 |
nMAG gel | 2.54 | 5.46 | 10.66 | 19.81 | 48.02 |
Difference | 13.0% | 5.2% | 10.6% | 37.6% | 32.7% |
Periphery | |||||
Film | 2.57 | 5.28 | 10.06 | 18.39 | 47.48 |
nMAG gel | 2.36 | 4.63 | 9.65 | 17.81 | 41.86 |
Difference | 8.2% | 12.3% | 4.1% | 3.2% | 11.8% |
