scholarly journals Clinical Evaluation of Highly Accelerated Compressed Sensing Time-of-Flight MR Angiography for Intracranial Arterial Stenosis

2018 ◽  
Vol 39 (10) ◽  
pp. 1833-1838 ◽  
Author(s):  
S.s. Lu ◽  
M. Qi ◽  
X. Zhang ◽  
X.h. Mu ◽  
M. Schmidt ◽  
...  
Keyword(s):  
Compressed Sensing ◽  
Clinical Evaluation ◽  
Mr Angiography ◽  
Time Of Flight ◽  
Arterial Stenosis ◽  
Intracranial Arterial Stenosis ◽  
Sensing Time

High-resolution compressed-sensing time-of-flight MRA in a case of acute ICA/MCA dissection

2020 ◽  
Vol 62 (6) ◽  
pp. 753-756 ◽  
Author(s):  
Theo Demerath ◽  
Leo Bonati ◽  
Amgad El Mekabaty ◽  
Tilman Schubert
Keyword(s):  
High Resolution ◽  
Compressed Sensing ◽  
Time Of Flight ◽  
Sensing Time

High resolution time-of-flight MR-angiography at 7 T exploiting VERSE saturation, compressed sensing and segmentation

2019 ◽  
Vol 63 ◽  
pp. 193-204 ◽  
Author(s):  
Christian R. Meixner ◽  
Patrick Liebig ◽  
Peter Speier ◽  
Christoph Forman ◽  
Bernhard Hensel ◽  
...  
Keyword(s):  
High Resolution ◽  
Compressed Sensing ◽  
Mr Angiography ◽  
Time Of Flight ◽  
Resolution Time

Intracranial vascular lesions: optimization and clinical evaluation of three-dimensional time-of-flight MR angiography.

Radiology ◽  
1990 ◽  
Vol 175 (2) ◽  
pp. 443-448 ◽  
Author(s):  
G Marchal ◽  
H Bosmans ◽  
L Van Fraeyenhoven ◽  
G Wilms ◽  
P Van Hecke ◽  
...  
Keyword(s):  
Clinical Evaluation ◽  
Mr Angiography ◽  
Three Dimensional ◽  
Time Of Flight ◽  
Vascular Lesions

scholarly journals Clinical evaluation of time-of-flight MR angiography with sparse undersampling and iterative reconstruction for cerebral aneurysms

2017 ◽  
Vol 30 (11) ◽  
pp. e3774 ◽  
Author(s):  
Yasutaka Fushimi ◽  
Tomohisa Okada ◽  
Takayuki Kikuchi ◽  
Akira Yamamoto ◽  
Tsutomu Okada ◽  
...  
Keyword(s):  
Clinical Evaluation ◽  
Iterative Reconstruction ◽  
Mr Angiography ◽  
Time Of Flight ◽  
Cerebral Aneurysms

Diminished Signal Intensities Distal to Intracranial Arterial Stenosis on Time-of-Flight MR Angiography Might Indicate Delayed Cerebral Perfusion

2016 ◽  
Vol 42 (3-4) ◽  
pp. 232-239 ◽  
Author(s):  
Linfang Lan ◽  
Xinyi Leng ◽  
Jill Abrigo ◽  
Hui Fang ◽  
Vincent H.L. Ip ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Cerebral Perfusion ◽  
Cerebral Blood Volume ◽  
Ct Perfusion ◽  
Mean Transit Time ◽  
Time Of Flight ◽  
Arterial Stenosis ◽  
Intracranial Arterial Stenosis ◽  
Tof Mra ◽  
Signal Intensities

Background: Intracranial arterial stenosis (ICAS) is a predominant cause of ischemic stroke in Asia. Changes in the signal intensities (SIs) across ICAS lesions on time-of-flight magnetic resonance angiography (TOF-MRA) have been indicated to partially reflect the hemodynamic significance of the lesions, which we aimed to verify by correlating it with cerebral perfusion features provided by CT perfusion (CTP) imaging. Methods: Ischemic stroke or transient ischemic attack patients with unilateral symptomatic stenosis (≥50%) of intracranial internal carotid artery or middle cerebral artery (MCA) were included in this study. Change of SIs across an ICAS lesion on TOF-MRA was calculated by the distal and proximal SI ratio (SIR). Cerebral blood volume (CBV), cerebral blood flow (CBF), and mean transit time (MTT) within the MCA territory of ipsilateral and contralateral hemispheres were evaluated on the CTP images at the basal ganglia level. Relative CBV, CBF and MTT were defined as ratios of the values obtained from ipsilateral and contralateral hemispheres. The relationships between SIR and CTP parameters were analyzed. Results: Fifty subjects (74% male, mean age 62) were recruited. Overall, the mean SIR was 0.77 ± 0.17. SIR of ICAS was significantly, linearly and negatively correlated with ipsilateral CBV (r = -0.335, p = 0.017), ipsilateral MTT (r = -0.301, p = 0.034), and ipsilateral/contralateral MTT ratio (r = -0.443, p = 0.001). Conclusions: Diminished SIs distal to ICAS on TOF-MRA might be associated with delayed ipsilateral cerebral perfusion. Changes of the SIs across ICAS lesions on TOF-MRA may be a simple marker to reflect cerebral perfusion changes in patients with symptomatic ICAS.

Real-time 3D video utilizing a compressed sensing time-of-flight single-pixel camera

2016 ◽  
Author(s):  
Matthew P. Edgar ◽  
Ming-Jie Sun ◽  
Graham M. Gibson ◽  
Gabriel C. Spalding ◽  
David B. Phillips ◽  
...  
Keyword(s):  
Compressed Sensing ◽  
Real Time ◽  
Time Of Flight ◽  
3D Video ◽  
Single Pixel ◽  
Sensing Time
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