This single-center retrospective study, medical image reviews (MRI, TFCA), and medical record reviews were approved by the Institutional Review Board (IRB No. VC22RASI0052), and requirements for consent forms were waived. Patients with suspected AVF, AVM or CCF on MRI between January 2016 to December 2021 were initially recruited. All patients underwent TFCA within 12 months acquisition of MRI. Specifically, the median time interval between MRI acquisition and TFCA was approximately 8.5 days with interquartile range of 2.0 days to 22.3 days. However, individuals who did not undergo TFCA or TFCA within 12 months of MRI acquisition, those who underwent 1.5T MRI, MRI without T2WI or SWI pulse sequences, and individuals without pre-treatment MRI SWI evaluation were excluded (Fig. 1 ). Three MR vendors utilized in present study were the Vida 3T MRI (Siemens, Erlangen, Germany), Ingenia 3T MRI (Phillips, Cambridge, MA, USA), and Verio 3T MRI (Siemens).
Verio 3t mri
Manufactured by Siemens
Sourced in United States, Germany
The Verio 3T MRI is a magnetic resonance imaging system manufactured by Siemens. It operates at a field strength of 3 Tesla, providing high-quality imaging capabilities for medical and research applications. The Verio 3T MRI is designed to capture detailed images of the body's internal structures, enabling healthcare professionals to diagnose and monitor various medical conditions.
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3 protocols using verio 3t mri
1
Retrospective Study on Vascular Malformations
2
MRI Imaging Protocol for Diffusion and Structural Analysis
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Diffusion and structural MRIs were obtained on a GE Signa Excite HDx or Lx 1.5T (GE Healthcare, Waukesha, WI); Siemens Avanto or Sonata 1.5T (Siemens Healthcare, Erlangen, Germany); or Siemens Trio, Allegra, or Verio 3T MRI system. Standard anatomical MRI consisted of pre- and postcontrast (gadolinium-diethylenetriamine pentacetic acid at a dose of 0.1 mmoL/kg body weight; Magnevist, Bayer Schering Pharma, Leverkusen, Germany) axial T1-weighted images along with precontrast axial T2-weighted and fluid-attenuated inversion recovery sequences with standard sequence parameters. Patients also received diffusion-weighted images with an echo/repetition time = 80 to 120 ms/>5000 ms, matrix size = 128 × 128, slice thickness = 3 mm with no interslice gap, and b values of 0 and 1000 s/mm2 in 3 orthogonal directions. ADC maps were calculated for each image voxel as ADC(x, y, z) = −1/1000 · ln[S(x, y, z)/S0(x, y, z)], where S(x, y, z) is the signal intensity of the voxel at coordinate (x, y, z) with b = 1000 s/mm2 and S0(x, y, z) is the signal intensity at voxel (x, y, z) with b = 0 s/mm2.
3
Multimodal Neuroimaging Protocol for WML
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MRI was obtained on a Siemens verio 3T MRI with a 32 channel head coil. T1, Proton density and T2 weighted and FLAIR scans were obtained. All scans were reviewed by a neuro-radiologist (WK) for assessment of the presence of white matter lesions.
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