scholarly journals A multi‐inversion multi‐echo spin and gradient echo echo planar imaging sequence with low image distortion for rapid quantitative parameter mapping and synthetic image contrasts

2021 ◽  
Author(s):  
Mary Kate Manhard ◽  
Jason Stockmann ◽  
Congyu Liao ◽  
Daniel Park ◽  
Sohyun Han ◽  
...  
Keyword(s):  
Image Distortion ◽  
Echo Planar Imaging ◽  
Synthetic Image ◽  
Gradient Echo ◽  
Planar Imaging ◽  
Quantitative Parameter ◽  
Parameter Mapping ◽  
Imaging Sequence ◽  
Echo Planar ◽  
Echo Planar Imaging Sequence

scholarly journals Detection of Myocardial Edema with Low-b-value Diffusion-weighted Echo-planar Imaging Sequence in Patients with Acute Myocarditis

Radiology ◽  
2013 ◽  
Vol 269 (2) ◽  
pp. 362-369 ◽  
Author(s):  
Julien Potet ◽  
Alain Rahmouni ◽  
Julie Mayer ◽  
Alexandre Vignaud ◽  
Pascal Lim ◽  
...  
Keyword(s):  
Acute Myocarditis ◽  
Myocardial Edema ◽  
B Value ◽  
Echo Planar Imaging ◽  
Planar Imaging ◽  
Diffusion Weighted ◽  
Imaging Sequence ◽  
Echo Planar ◽  
Echo Planar Imaging Sequence

scholarly journals Susceptibility compensated fMRI study using a tailored RF echo planar imaging sequence

2009 ◽  
Vol 29 (1) ◽  
pp. 221-228 ◽  
Author(s):  
Jun-Young Chung ◽  
Hyo Woon Yoon ◽  
Young-Bo Kim ◽  
Hyun Wook Park ◽  
Zang-Hee Cho
Keyword(s):  
Echo Planar Imaging ◽  
Planar Imaging ◽  
Imaging Sequence ◽  
Fmri Study ◽  
Echo Planar ◽  
Echo Planar Imaging Sequence

scholarly journals Improved image reconstruction for partial fourier gradient-echo echo-planar imaging (EPI)

2008 ◽  
Vol 59 (4) ◽  
pp. 916-924 ◽  
Author(s):  
Nan-kuei Chen ◽  
Koichi Oshio ◽  
Lawrence P. Panych
Keyword(s):  
Image Reconstruction ◽  
Echo Planar Imaging ◽  
Gradient Echo ◽  
Planar Imaging ◽  
Echo Planar

scholarly journals Evaluation of Imaging Schemes for Pulsed Arterial Spin Labelling of the Human Kidney Cortex

2018 ◽  
Author(s):  
Charlotte E. Buchanan ◽  
Eleanor F. Cox ◽  
Susan T. Francis
Keyword(s):  
Spin Echo ◽  
Human Kidney ◽  
Echo Planar Imaging ◽  
Arterial Spin Labelling ◽  
Kidney Cortex ◽  
Gradient Echo ◽  
Planar Imaging ◽  
Spatial Coverage ◽  
Echo Planar ◽  
Spin Labelling

Purpose: A number of imaging readout schemes have been proposed for renal arterial spin labelling (ASL) to quantify kidney cortex perfusion, including gradient echo based methods of balanced fast field echo (bFFE) and gradient-echo echo-planar imaging (GE-EPI), or spin echo based schemes of spin-echo echo planar imaging (SE-EPI) and turbo spin-echo (TSE). Here, we compare these imaging schemes to evaluate the optimal imaging scheme for pulsed ASL (PASL) assessment of human kidney cortex perfusion at 3 T. Methods: Ten healthy volunteers with normal renal function were scanned using each 2D multislice imaging scheme, in combination with a respiratory triggered FAIR (flow-sensitive alternating inversion recovery) ASL scheme on a 3 T Philips Achieva scanner. All volunteers returned for a second identical scan session within two weeks of the first scan session. Comparisons were made between the imaging schemes in terms of perfusion weighted image (PWI) signal-to-noise ratio (SNR) and perfusion quantification, temporal SNR (tSNR), spatial coverage, and repeatability. Results: For each imaging scheme, renal cortex perfusion was calculated (bFFE: 276 ± 29 mL/100 g/min, GE-EPI: 222 ± 18 mL/100 g/min, SE-EPI: 201 ± 36 mL/100 g/min, TSE: 200 ± 20 mL/100 g/min). Perfusion was found to be higher for GE based readouts compared to SE based readouts, with significantly higher measured perfusion for the bFFE readout compared to all other schemes (P < 0.05), attributed to the greater vascular signal present. Despite the PWI-SNR being significantly lower for SE-EPI compared to all other schemes (P < 0.05), the SE-EPI readout gave the highest tSNR and was found to be the most reproducible scheme for the assessment of kidney cortex, with a CoV of 17.2%, whilst minimizing variability of the perfusion weighted signal across slices for whole kidney perfusion assessment. Conclusion: For the assessment of kidney cortex perfusion, SE-EPI provides optimal tSNR, minimal variability across slices and repeatable data acquired in a short scan time with low specific absorption rate. 

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