Utilizing Fast Spin Echo MRI to Reduce Image Artifacts and Improve Implant/Tissue Interface Detection in Refractory Parkinson’s Patients with Deep Brain Stimulators

Table 2

Wilcoxon signed-rank test results for visualized DBS lead diameters from images using various MR sequences for DBS patients (C.I. 𝛼=0.05).

Test number	Null hypotheses; mean values (mm)	𝑊, 𝑊crit, 𝑃 value	Test results
I.	𝐻0: (𝐷MPRAGE−𝐷2DSET1)=0	0, 3, 𝑃≤0.05	Reject 𝐻0 (diameters are significantly different)
	4.0±0.2; 2.2±0.1
II.	𝐻0: (𝐷MPRAGE−𝐷3DFSET2)=0	0, 3, 𝑃≤0.05	Reject 𝐻0 (diameters are significantly different)
	4.0±0.2; 2.1±0.1
III.	𝐻0: (𝐷MPRAGE−𝐷2DFSET2)=0	0, 3, 𝑃≤0.05	Reject 𝐻0 (diameters are significantly different)
	4.0±0.2; 2.2±0.1
IV.	𝐻0: (𝐷2DFSET2−𝐷2DSET1)=0	17, 3, 𝑃≤0.05	Accept 𝐻0 (diameters are not significantly different)
	2.1±0.1; 2.2±0.1
V.	𝐻0: (𝐷3DFSET2−𝐷2DSET1)=0	8, 3, 𝑃≤0.05	Accept 𝐻0 (diameters are not significantly different)
	2.1±0.1; 2.2±0.1
VI.	𝐻0: (𝐷3DFSET2−𝐷2DFSET2)=0	8, 3, 𝑃≤0.05	Accept 𝐻0 (diameters are not significantly different)
	2.1±0.1; 2.2±0.1