Table 2.

The impact of compression ratio on the image details, grouped by modality and encoder. The values represent the percentage variation of the average weighted total variation (wTV) of each compressed file relatively to the raw data

CT				HREM				MRI
HEVC		JPEG2000		HEVC		JPEG2000		HEVC		JPEG2000
CR	$\mathrm{\Delta }wTV(\%)$	CR	$\mathrm{\Delta }wTV(\%)$	CR	$\mathrm{\Delta }wTV(\%)$	CR	$\mathrm{\Delta }wTV(\%)$	CR	$\mathrm{\Delta }wTV(\%)$	CR	$\mathrm{\Delta }wTV(\%)$
1	0	1	0	1	0	1	0	1	0	1	0
16	−1.2	8	−0.6	45	−1.6	10	−0.1	10	−2.2	9	−7.3
34	−1.9	9	−1.2	112	−3.0	33	−1.7	14	−4.0	15	−26.7
58	−4.0	12	−25.6	274	−6.3	159	−11.4	34	−7.7	44	−55.9
				941	−16.4	643	−47.7	52	−10.0