scholarly journals Spin-echo Echo-planar Imaging MR Elastography versus Gradient-echo MR Elastography for Assessment of Liver Stiffness in Children and Young Adults Suspected of Having Liver Disease

Radiology ◽  
2017 ◽  
Vol 282 (3) ◽  
pp. 761-770 ◽  
Author(s):  
Suraj D. Serai ◽  
Jonathan R. Dillman ◽  
Andrew T. Trout
Keyword(s):  
Young Adults ◽  
Liver Disease ◽  
Spin Echo ◽  
Liver Stiffness ◽  
Echo Planar Imaging ◽  
Mr Elastography ◽  
Gradient Echo ◽  
Planar Imaging ◽  
Children And Young Adults ◽  
Echo Planar

scholarly journals Feasibility of Spin-Echo Echo-Planar Imaging MR Elastography in Livers of Children and Young Adults

2019 ◽  
Vol 23 (3) ◽  
pp. 251
Author(s):  
Jin Kyem Kim ◽  
Haesung Yoon ◽  
Mi-Jung Lee ◽  
Myung-Joon Kim ◽  
Kyunghwa Han ◽  
...  
Keyword(s):  
Young Adults ◽  
Spin Echo ◽  
Echo Planar Imaging ◽  
Mr Elastography ◽  
Planar Imaging ◽  
Children And Young Adults ◽  
Echo Planar

Respiratory-triggered spin-echo echo-planar imaging-based mr elastography for evaluating liver stiffness

2018 ◽  
Vol 50 (2) ◽  
pp. 391-396 ◽  
Author(s):  
Hui Wang ◽  
Jean A. Tkach ◽  
Andrew T. Trout ◽  
Charles L. Dumoulin ◽  
Jonathan R. Dillman
Keyword(s):  
Spin Echo ◽  
Liver Stiffness ◽  
Echo Planar Imaging ◽  
Mr Elastography ◽  
Planar Imaging ◽  
Echo Planar

MR elastography of liver fibrosis: preliminary results comparing spin-echo and echo-planar imaging

2008 ◽  
Vol 18 (11) ◽  
pp. 2535-2541 ◽  
Author(s):  
Laurent Huwart ◽  
Najat Salameh ◽  
Leon ter Beek ◽  
Eric Vicaut ◽  
Frank Peeters ◽  
...  
Keyword(s):  
Liver Fibrosis ◽  
Spin Echo ◽  
Echo Planar Imaging ◽  
Mr Elastography ◽  
Planar Imaging ◽  
Preliminary Results ◽  
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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