Imaging for deep brain stimulation: The zona incerta at 7 Tesla

doi:10.4329/wjr.v5.i1.5

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World Journal of Radiology

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World J Radiol. Jan 28, 2013; 5(1): 5-16
Published online Jan 28, 2013. doi: 10.4329/wjr.v5.i1.5

Table 3 Average signal-to-noise ratios and contrast-to-noise-ratios of the zona incerta at 7.0 T magnetic resonance imaging

	SNR		CNR
Sequence	Non-adjusted	Adjusted	Non-adjusted	Adjusted
T1-GRE tra	46.30 ± 9.48¹	271.09 ± 55.51¹	6.14 ± 2.01	35.96 ± 11.79
T1-GRE cor	46.33 ± 8.88¹	271.23 ± 55.98¹	6.47 ± 2.12	37.87 ± 12.42
T1-GRE sag	45.75 ± 9.44¹	267.84 ± 55.24¹	7.05 ± 2.67	41.30 ± 15.63
T2-TSE tra	17.18 ± 6.51	105.03 ± 39.81	19.40 ± 4.20	121.69 ± 25.68
FLASH2D-T2Star tra	40.28 ± 16.32¹	322.23 ± 130.60¹	44.17 ± 12.90¹	353.33 ± 103.19¹
FLASH2D-T2Star cor	53.06 ± 11.09¹	424.48 ± 88.76¹	31.76 ± 8.281	254.08 ± 66.24¹
FLASH2D-T2Star sag	57.84 ± 10.31¹	462.75 ± 88.76¹	33.92 ± 11.76¹	271.39 ± 94.05¹
SWI tra	18.94 ± 6.98	140.05 ± 51.62	10.99 ± 4.94	81.26 ± 36.57
SWI cor	19.20 ± 8.23	141.98 ± 60.88	10.40 ± 4.35	76.95 ± 32.15
SWI sag	18.80 ± 7.52	139.05 ± 55.65	11.07 ± 4.30	81.90 ± 31.85
SWI-MIP tra	358.89 ± 152.81¹	331.81 ± 141.28¹	275.70 ± 127.52¹	254.90 ± 117.90¹
SWI-MIP cor	354.00 ± 116.37¹	327.29 ± 107.59¹	275.86 ± 121.59¹	255.05 ± 112.41¹
SWI-MIP sag	312.66 ± 8.44¹	289.07 ± 75.29¹	261.28 ± 121.88¹	241.57 ± 119.15¹

¹To further compare differences of the directly computed signal-to-noise ratios (SNR) and contrast-to-noise-ratios (CNR) values (non-adjusted), the obtained results for each sequence were adjusted to a voxel of 1 mm³ x 1 mm³ x 1 mm³, by applying an associated conversion factor. Sequences with statistically significant superior SNR and CNR values compared to T2-TSE imaging (paired t-test) are denoted. T1-GRE: T1-weighted gradient-echo; T2-TSE: T2-turbo spin-echo; SWI: Susceptibility-weighted imaging; MIP: Minimum intensity projections transversal; tra: Transversal; cor: Coronal; sag: Sagittal.

Citation: Kerl HU, Gerigk L, Brockmann MA, Huck S, Al-Zghloul M, Groden C, Hauser T, Nagel AM, Nölte IS. Imaging for deep brain stimulation: The zona incerta at 7 Tesla. World J Radiol 2013; 5(1): 5-16
URL: https://www.wjgnet.com/1949-8470/full/v5/i1/5.htm
DOI: https://dx.doi.org/10.4329/wjr.v5.i1.5