Two-centre comparative experimental study of biparametric MRI at 3.0 T with and without endorectal coil using kiwifruit (Actinidia deliciosa) as a phantom for human prostate

Murer, Sophie; Scheidler, Juergen; Mueller-Lisse, Ulrike L.; Helling, Marissa; Scherr, Michael; Mueller-Lisse, Ullrich G.

doi:10.1186/s41747-019-0111-8

European Radiology Experimental

Table 2 Signal-to-noise ratios in kiwifruits examined with and without an endorectal coil at site 1 (twelve corresponding regions of interest in anterior and posterior locations) and at site 2 (three corresponding regions of interest in anterior and posterior locations)

From: Two-centre comparative experimental study of biparametric MRI at 3.0 T with and without endorectal coil using kiwifruit (Actinidia deliciosa) as a phantom for human prostate

Kiwifruits, outer pericarp, site 1	ERC, n = 12 × 2 ROIs			noERC, n = 12 × 2 ROIs			ERC versus noERC
Kiwifruits, outer pericarp, site 1	SNR, anterior (mean ± SD)	SNR, posterior (mean ± SD)	p value	SNR, anterior (mean ± SD)	SNR, posterior (mean ± SD	p value	SNR, anterior,p value	SNR, posterior,p value
T2WI	14.2 ± 2.4	13.9 ± 3.7	0.742	13.3 ± 2.4	13.1 ± 2.7	0.763	0.428	0.546
DWI_reduced b = 50	4.8 ± 2.4	7.8 ± 2.7	0.013	7.4 ± 4.0	8.2 ± 2.4	0.541	0.005	0.688
DWI_reduced b = 800	7.6 ± 7.1	7.3 ± 2.8	0.894	7.0 ± 3.2	10.7 ± 4.7	0.044	0.736	0.047
DWI_reduced ADC	5.3 ± 2.2	21.9 ± 12.0	< 0.001	10.5 ± 5.5	34.1 ± 13.3	< 0.001	0.002	0.024
Kiwifruits, outer pericarp, site 2	ERC, n = 3 × 2 ROIs			noERC, n = 3 × 2 ROIs			ERC versus noERC
Kiwifruits, outer pericarp, site 2	SNR, anterior (mean ± SD)	SNR, posterior (mean ± SD)	p value	SNR, anterior (mean ± SD)	SNR, posterior (mean ± SD	p value	SNR, anterior, p value	SNR, posterior, p value
T2WI	19.8 ± 5.1	17.4 ± 2.9	0.485	14.5 ± 6.8	18.5 ± 6.7	0.255	0.481	0.691
DWI_reduced b = 50	8.8 ± 1.5	7.1 ± 1.4	0.421	6.6 ± 3.1	8.4 ± 1.5	0.173	0.463	0.178
DWI_reduced b = 800	5.3 ± 4.2	8.2 ± 1.2	0.401	9.9 ± 0.5	7.8 ± 1.4	0.076	0.225	0.708
DWI_reduced ADC	10.8 ± 3.0	41.7 ± 13.1	0.060	5.2 ± 0.6	26.7 ± 9.8	0.071	0.095	0.366
Kiwifruits, peripheral placenta, site 1	ERC, n = 12 × 2 ROIs			noERC, n = 12 × 2 ROIs			ERC versus noERC
Kiwifruits, peripheral placenta, site 1	SNR, anterior (mean ± SD)	SNR, posterior (mean ± SD)	p value	SNR, anterior (mean ± SD)	SNR, posterior (mean ± SD	p value	SNR, anterior, p value	SNR, posterior, p value
T2WI	9.4 ± 3.9	8.6 ± 2.6	0.251	7.8 ± 2.6	8.1 ± 2.9	0.715	0.285	0.496
DWI_reduced b = 50	7.6 ± 4.3	6.1 ± 1.9	0.332	9.1 ± 2.8	9.1 ± 4.9	0.992	0.379	0.066
DWI_reduced b = 800	7.8 ± 3.1	7.0 ± 3.1	0.581	10.5 ± 2.9	11.5 ± 6.2	0.529	0.046	0.086
DWI_reduced ADC	15.1 ± 8.2	15.2 ± 8.6	0.941	26.7 ± 16.1	25.5 ± 9.2	0.810	0.036	0.010
Kiwifruits, peripheral placenta, site 2	ERC, n = 3 × 2 ROIs			noERC, n = 3 × 2 ROIs			ERC versus noERC
Kiwifruits, peripheral placenta, site 2	SNR, anterior (mean ± SD)	SNR, posterior (mean ± SD)	p value	SNR, anterior (mean ± SD)	SNR, posterior (mean ± SD)	p value	SNR, anterior, p value	SNR, posterior, p value
T2WI	9.0 ± 0.7	9.8 ± 3.5	0.713	9.0 ± 0.7	10.4 ± 2.9	0.391	0.972	0.225
DWI_reduced b = 50	7.1 ± 2.0	6.8 ± 0.2	0.825	6.5 ± 1.8	8.7 ± 2.1	0.010	0.125	0.241
DWI_reduced b = 800	7.2 ± 1.3	6.9 ± 2.2	0.861	8.6 ± 0.4	8.4 ± 1.6	0.806	0.183	0.450
DWI_reduced ADC	24.7 ± 2.2	35.6 ± 14.0	0.277	22.5 ± 11.4	22.1 ± 4.3	0.937	0.729	0.251

p values were obtained using Student’s t test for paired samples
ADC apparent diffusion coefficient, DWI_reduced echo-planar diffusion-weighted imaging with reduced field of view and selective excitation, ERC with endorectal coil, noERC without endorectal coil, ROI region-of-interest, SD standard deviation, SNR signal-to-noise ratio, T2WI T2-weighted turbo-spin-echo imaging

Back to article page