The Experts below are selected from a list of 303 Experts worldwide ranked by ideXlab platform
Jean-louis Dietemann - One of the best experts on this subject based on the ideXlab platform.
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3D T2-Space versus T2-FSE or T2 Gradient Recalled-Echo: Which Is the Best Sequence?
AJNR. American journal of neuroradiology, 2017Co-Authors: Maria Isabel Vargas, Jean-louis DietemannAbstract:We read with interest the paper published on-line by Chokshi et al[1][1] regarding whether 3D T2 sampling perfection with application-optimized contrasts by using flip angle evolution (SPACE) could replace T2 FSE in spinal imaging. We agree with the authors that 3D T2-Space is an excellent sequence
Berthold Kiefer - One of the best experts on this subject based on the ideXlab platform.
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magnetic resonance imaging of the body trunk using a single slab 3 dimensional t2 weighted turbo spin echo sequence with high sampling efficiency space for high spatial resolution imaging initial clinical experiences
Investigative Radiology, 2005Co-Authors: M Lichy, B M Wietek, John P Mugler, Wilhelm Horger, Marion I Menzel, A Anastasiadis, K C Siegmann, Thomas Niemeyer, Arnulf Konigsrainer, Berthold KieferAbstract:Purpose: The authors conducted a clinical evaluation of single-slab, 3-dimensional, T2-weighted turbo-spin-echo (TSE) with high sampling efficiency (SPACE) for high isotropic body imaging with large field-of-view (FoV). Materials and Methods: Fifty patients were examined in clinical routine with SPACE (regions of interest: pelvis n = 30, lower spine n = 12, upper spine n = 6, extremities n = 4) at 1.5 T. For achieving a high sampling efficiency, parallel imaging, high turbofactor, and magnetization restore pulses were used. In contrast to a conventional TSE imaging technique with constant flip angle refocusing, the refocusing pulse train of the SPACE sequence consists of variable flip angle radiofrequency pulses along the echo train. Results: Signal-to-noise ratio and contrast-to-noise ratio of SPACE images were of sufficient diagnostic value. The possibility of image reconstruction in multiple planes was of clinical relevance in all cases and simplified data analysis. Conclusion: The achievement of 3-dimensional, T2-weighted TSE magnetic resonance imaging with isotropic and high spatial resolution and interactive 3-dimensional visualization essentially improve the diagnostic potential of magnetic resonance imaging.
Maria Isabel Vargas - One of the best experts on this subject based on the ideXlab platform.
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3D T2-Space versus T2-FSE or T2 Gradient Recalled-Echo: Which Is the Best Sequence?
AJNR. American journal of neuroradiology, 2017Co-Authors: Maria Isabel Vargas, Jean-louis DietemannAbstract:We read with interest the paper published on-line by Chokshi et al[1][1] regarding whether 3D T2 sampling perfection with application-optimized contrasts by using flip angle evolution (SPACE) could replace T2 FSE in spinal imaging. We agree with the authors that 3D T2-Space is an excellent sequence
Jason W. Allen - One of the best experts on this subject based on the ideXlab platform.
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Diagnostic Quality of 3D T2-Space Compared with T2-FSE in the Evaluation of Cervical Spine MRI Anatomy.
AJNR. American journal of neuroradiology, 2017Co-Authors: Falgun H. Chokshi, Gelareh Sadigh, W. Carpenter, Jason W. AllenAbstract:BACKGROUND AND PURPOSE: Spinal anatomy has been variably investigated using 3D MRI. We aimed to compare the diagnostic quality of T2 sampling perfection with application-optimized contrasts by using flip angle evolution (SPACE) with T2-FSE sequences for visualization of cervical spine anatomy. We predicted that T2-Space will be equivalent or superior to T2-FSE for visibility of anatomic structures. MATERIALS AND METHODS: Adult patients undergoing cervical spine MR imaging with both T2-Space and T2-FSE sequences for radiculopathy or myelopathy between September 2014 and February 2015 were included. Two blinded subspecialty-trained radiologists independently assessed the visibility of 12 anatomic structures by using a 5-point scale and assessed CSF pulsation artifact by using a 4-point scale. Sagittal images and 6 axial levels from C2–T1 on T2-FSE were reviewed; 2 weeks later and after randomization, T2-Space was evaluated. Diagnostic quality for each structure and CSF pulsation artifact visibility on both sequences were compared by using a paired t test. Interobserver agreement was calculated (κ). RESULTS: Forty-five patients were included (mean age, 57 years; 40% male). The average visibility scores for intervertebral disc signal, neural foramina, ligamentum flavum, ventral rootlets, and dorsal rootlets were higher for T2-Space compared with T2-FSE for both reviewers ( P < .001). Average scores for remaining structures were either not statistically different or the superiority of one sequence was discordant between reviewers. T2-Space showed less degree of CSF flow artifact ( P < .001). Interobserver variability ranged between −0.02–0.20 for T2-Space and −0.02–0.30 for T2-FSE (slight to fair agreement). CONCLUSIONS: T2-Space may be equivalent or superior to T2-FSE for the evaluation of cervical spine anatomic structures, and T2-Space shows a lower degree of CSF pulsation artifact. C-spine : cervical spine SPACE : sampling perfection with application-optimized contrasts by using flip angle evolution
M Lichy - One of the best experts on this subject based on the ideXlab platform.
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magnetic resonance imaging of the body trunk using a single slab 3 dimensional t2 weighted turbo spin echo sequence with high sampling efficiency space for high spatial resolution imaging initial clinical experiences
Investigative Radiology, 2005Co-Authors: M Lichy, B M Wietek, John P Mugler, Wilhelm Horger, Marion I Menzel, A Anastasiadis, K C Siegmann, Thomas Niemeyer, Arnulf Konigsrainer, Berthold KieferAbstract:Purpose: The authors conducted a clinical evaluation of single-slab, 3-dimensional, T2-weighted turbo-spin-echo (TSE) with high sampling efficiency (SPACE) for high isotropic body imaging with large field-of-view (FoV). Materials and Methods: Fifty patients were examined in clinical routine with SPACE (regions of interest: pelvis n = 30, lower spine n = 12, upper spine n = 6, extremities n = 4) at 1.5 T. For achieving a high sampling efficiency, parallel imaging, high turbofactor, and magnetization restore pulses were used. In contrast to a conventional TSE imaging technique with constant flip angle refocusing, the refocusing pulse train of the SPACE sequence consists of variable flip angle radiofrequency pulses along the echo train. Results: Signal-to-noise ratio and contrast-to-noise ratio of SPACE images were of sufficient diagnostic value. The possibility of image reconstruction in multiple planes was of clinical relevance in all cases and simplified data analysis. Conclusion: The achievement of 3-dimensional, T2-weighted TSE magnetic resonance imaging with isotropic and high spatial resolution and interactive 3-dimensional visualization essentially improve the diagnostic potential of magnetic resonance imaging.
