Readout-segmented echo-planar imaging in the evaluation of sinonasal lesions: A comprehensive comparison of image quality in single-shot echo-planar imaging

Diffusion-Weighted Imaging of the Head and Neck: Influence of Fat-Suppression Technique and Multishot 2D Navigated Interleaved Acquisitions

“…2,3 Using this property, DWI can offer additional information about lesion characteristics in different regions of the body, including the head and neck. 2,[4][5][6][7][8] In clinical practice, DWI is usually performed with a single-shot EPI (ssEPI) sequence. 2,[4][5][6][7][8] To obtain good ssEPI quality, effective fat suppression is essential to eliminate the lipid signal and reduce ghost artifacts.…”

“…2,[4][5][6][7][8] In clinical practice, DWI is usually performed with a single-shot EPI (ssEPI) sequence. 2,[4][5][6][7][8] To obtain good ssEPI quality, effective fat suppression is essential to eliminate the lipid signal and reduce ghost artifacts. 4 Previous studies conducted on breast tissue have demonstrated that uniformity of fat suppression, SNR, contrast-to-noise ratio (CNR), and even ADC are affected by the choice of the fat-suppression technique.…”

“…Multishot EPI (msEPI) is an imaging technique that reduces magnetic susceptibility artifacts and T2* blurring in DWI. 5,[14][15][16] Because the head and neck region has substantial magnetic field inhomogeneity due to air-containing structures, the utility of msEPI-DWI has been proved effective in decreasing geometric distortion. 5,17 However, msEPI-DWI requires spectral-selective saturation such as spectral presaturation with inversion recovery (SPIR) for optimal fat suppression, not STIR.…”

“…5,[14][15][16] Because the head and neck region has substantial magnetic field inhomogeneity due to air-containing structures, the utility of msEPI-DWI has been proved effective in decreasing geometric distortion. 5,17 However, msEPI-DWI requires spectral-selective saturation such as spectral presaturation with inversion recovery (SPIR) for optimal fat suppression, not STIR. 15 Two studies have compared the image quality between ssEPI-DWI and msEPI-DWI in the head and neck, 5,17 but neither considered fat-suppression techniques.…”

“…5,17 However, msEPI-DWI requires spectral-selective saturation such as spectral presaturation with inversion recovery (SPIR) for optimal fat suppression, not STIR. 15 Two studies have compared the image quality between ssEPI-DWI and msEPI-DWI in the head and neck, 5,17 but neither considered fat-suppression techniques.…”