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Description Examples of sagittal T1WI in a high BMI subject. The signal intensity of the vertebral body, spinal cord, and spinous process in the range from Th11 to L1 with the conventional position are dark in...
Article Title: Simple modification of arm position improves B1+ and signal homogeneity in the thoracolumbar spine at 3T
Publication Title: Journal of Magnetic Resonance Imaging -
Description Contrast to noise ratios (CNRs) of spinal cord and CSF. The CNR of the arm lift and the elevated arm position are significantly higher than that of the conventional position, while the CNR of the...
Article Title: Simple modification of arm position improves B1+ and signal homogeneity in the thoracolumbar spine at 3T
Publication Title: Journal of Magnetic Resonance Imaging -
Description Influence of body habitus. The BMIs (a) and arm girth (b) are plotted against the mean FA (at the level of Th12) of the conventional position. The mean FA decreases as BMI or arm girth increases.
Article Title: Simple modification of arm position improves B1+ and signal homogeneity in the thoracolumbar spine at 3T
Publication Title: Journal of Magnetic Resonance Imaging -
Description Arm positions. Three patterns of arm positions were used. a: Conventional position (arms are on the bed). b: Arm lift position (elevation of arms by 100 mm). c: The elevated arm position (elevation...
Article Title: Simple modification of arm position improves B1+ and signal homogeneity in the thoracolumbar spine at 3T
Publication Title: Journal of Magnetic Resonance Imaging -
Description ROI measurement of flip angle (FA) and signal intensities. a: ROI measurement of B1+ map was conducted with a rectangular ROI (150 × 120 mm) placed at center of vertebra on each B1+ map (vertebral...
Article Title: Simple modification of arm position improves B1+ and signal homogeneity in the thoracolumbar spine at 3T
Publication Title: Journal of Magnetic Resonance Imaging -
Description Pulse sequence of B1+ mapping. Before the prepulse is applied, four images are acquired by using each single channel of transmit RF coil. After the prepulse is transmitted using each of the...
Article Title: Simple modification of arm position improves B1+ and signal homogeneity in the thoracolumbar spine at 3T
Publication Title: Journal of Magnetic Resonance Imaging -
Description Mean of flip angles at each vertebral level. The mean flip angles of arm lift and the elevated arm position were significantly higher than that of conventional position at each level. The mean flip...
Article Title: Simple modification of arm position improves B1+ and signal homogeneity in the thoracolumbar spine at 3T
Publication Title: Journal of Magnetic Resonance Imaging -
Description Examples of B1+ map in a high BMI subject. As the target FA is 90°, green color indicates the FA value near the target FA, red color indicates overexcitation, and blue color indicates...
Article Title: Simple modification of arm position improves B1+ and signal homogeneity in the thoracolumbar spine at 3T
Publication Title: Journal of Magnetic Resonance Imaging -
Description Standard deviation of flip angles at each vertebral level. Standard deviation of flip angles of the arm lift and the elevated arm position were significantly lower than that of the conventional...
Article Title: Simple modification of arm position improves B1+ and signal homogeneity in the thoracolumbar spine at 3T
Publication Title: Journal of Magnetic Resonance Imaging -
Description RF transmit coils in this study. Four channels of RF transmit coil were individually located at oblique positions in the oval‐shaped bore.
Article Title: Simple modification of arm position improves B1+ and signal homogeneity in the thoracolumbar spine at 3T
Publication Title: Journal of Magnetic Resonance Imaging