Table 2.

Average transmission time using various compression ratios from hospital to portable mobile device—brain CT image (transmission trial number was 30)

		CDMA 1x EVDO		WIBRO		HSDPA
Compression ratios	File size (KB)	Theoretical transmission time (seconds)	Measured transmission time (seconds)	Theoretical transmission time (seconds)	Measured transmission time (seconds)	Theoretical transmission time (seconds)	Measured transmission time (seconds)
Original	524	1.74 (at 2.4 Mbps)	6.18	1 (at 4 Mbps)	5.91	0.3 (at 14 Mbps)	5.81
5:1	105	0.35 (at 2.4 Mbps)	1.23	0.2 (at 4 Mbps)	1.18	0.06 (at 14 Mbps)	1.17
10:1	53	0.17 (at 2.4 Mbps)	0.62	0.1 (at 4 Mbps)	0.60	0.03 (at 14 Mbps)	0.59
20:1	26.2	0.08 (at 2.4 Mbps)	0.30	0.05 (at 4 Mbps)	0.29	0.01 (at 14 Mbps)	0.29
30:1	17.5	0.05 (at 2.4 Mbps)	0.20	0.03 (at 4 Mbps)	0.19	<0.01 (at 14 Mbps)	0.19
40:1	13.2	0.04 (at 2.4 Mbps)	0.16	0.02 (at 4 Mbps)	0.15	<0.01 (at 14 Mbps)	0.15
50:1	10.6	0.03 (at 2.4 Mbps)	0.13	0.02 (at 4 Mbps)	0.12	<0.01 (at 14 Mbps)	0.12
100:1	5.4	0.01 (at 2.4 Mbps)	0.06	0.01 (at 4 Mbps)	0.06	<0.01 (at 14 Mbps)	0.06