Performance of single spin-echo and doubly refocused diffusion-weighted sequences in the presence of eddy current fields with multiple components

2011 ◽  
Vol 29 (5) ◽  
pp. 659-667 ◽  
Author(s):  
Rita G. Nunes ◽  
Ivana Drobnjak ◽  
Stuart Clare ◽  
Peter Jezzard ◽  
Mark Jenkinson
Keyword(s):  
Eddy Current ◽  
Spin Echo ◽  
Single Spin ◽  
Multiple Components ◽  
Diffusion Weighted ◽  
Weighted Sequences

Relevance ofb-values in evaluating liver fibrosis: A study in healthy and cirrhotic subjects using two single-shot spin-echo echo-planar diffusion-weighted sequences

2008 ◽  
Vol 28 (2) ◽  
pp. 411-419 ◽  
Author(s):  
Rossano Girometti ◽  
Alessandro Furlan ◽  
Gennaro Esposito ◽  
Massimo Bazzocchi ◽  
Giuseppe Como ◽  
...  
Keyword(s):  
Liver Fibrosis ◽  
Spin Echo ◽  
Single Shot ◽  
Diffusion Weighted ◽  
Echo Planar ◽  
Weighted Sequences

Optimization of diffusion-weighted single-refocused spin-echo EPI by reducing eddy-current artifacts and shortening the echo time

2018 ◽  
Vol 31 (5) ◽  
pp. 585-597 ◽  
Author(s):  
Manoj Shrestha ◽  
Pavel Hok ◽  
Ulrike Nöth ◽  
Bianca Lienerth ◽  
Ralf Deichmann
Keyword(s):  
Eddy Current ◽  
Spin Echo ◽  
Diffusion Weighted ◽  
Echo Time

scholarly journals Comparison between turbo spin-echo and echo planar diffusion-weighted imaging of the female pelvis with 3T MRI

2021 ◽  
Vol 10 (2) ◽  
pp. 205846012199473
Author(s):  
Takeshi Yoshizako ◽  
Rika Yoshida ◽  
Hiroya Asou ◽  
Megumi Nakamura ◽  
Hajime Kitagaki
Keyword(s):  
Image Quality ◽  
Diffusion Weighted Imaging ◽  
Spin Echo ◽  
Turbo Spin Echo ◽  
Female Pelvis ◽  
3T Mri ◽  
Turbo Spin ◽  
Diffusion Weighted ◽  
Adc Values ◽  
Echo Planar

Background Echo-planar imaging (EPI)-diffusion-weighted imaging (DWI) may take unclear image affected by susceptibility, geometric distortions and chemical shift artifacts. Purpose To compare the image quality and usefulness of EPI-DWI and turbo spin echo (TSE)-DWI in female patients who required imaging of the pelvis. Material and Methods All 57 patients were examined with a 3.0-T MR scanner. Both TSE- and EPI-DWI were performed with b values of 0 and 1000 s/mm2. We compared geometric distortion, the contrast ratio (CR) of the myometrium to the muscle and the apparent diffusion coefficient (ADC) values for the myometrium and lesion. Two radiologists scored the TSE- and EPI-DWI of each patient for qualitative evaluation. Results The mean percent distortion was significantly smaller with TSE- than EPI-DWI ( p = 0.00). The CR was significantly higher with TSE- than EPI-DWI ( p = 0.003). There was a significant difference in the ADC value for the uterus and lesions between the EPI- and TSE-DWI ( p < 0.05). Finally, the ADC values of cancer were significantly different from those for the uterus and benign with both the two sequences ( p < 0.05). The scores for ghosting artifacts were higher with TSE- than EPI-DWI ( p = 0.019). But there were no significant differences between TSE- and EPI-DWI with regard to image contrast and overall image quality. Conclusion TSE-DWI on the female pelvis by 3T MRI produces less distortion and higher CR than EPI-DWI, but there is no difference in contrast and image quality.

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