María Hernández-Pérez, Josep Puig, Gerard Blasco, Laura Dorado, Natalia Pérez de la Ossa,...
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María Hernández-Pérez, Josep Puig, Gerard Blasco, Laura Dorado, Natalia Pérez de la Ossa, Antoni Dávalos, Josep Munuera EP-68 ssessment of collateral bloo flow with dMR at 3T in Acute Stroke Patients
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Importance of every part of the arterial tree in acute ischemic stroke Site of occlusion Status of arterial circulation beyond the occlusion Functionality of leptomeningeal collaterals Predictors of recanalization and clinical outcome Background Bang, Stroke 2011 Bang, J Neurol 2008
Transcript of María Hernández-Pérez, Josep Puig, Gerard Blasco, Laura Dorado, Natalia Pérez de la Ossa,...
PowerPoint PresentationMaría Hernández-Pérez, Josep Puig, Gerard
Blasco, Laura Dorado, Natalia Pérez de la Ossa, Antoni Dávalos,
Josep Munuera
EP-68
Acute Stroke Patients
No disclosures
Importance of every part of the arterial tree in acute ischemic stroke
Site of occlusion
Functionality of leptomeningeal collaterals
Background
No hemodynamic information
Four-dimensional MR angiography (dMRA) is a time-resolved sequence that
enables the hemodynamic study of cerebral blood vessels. Mainly used in arterio-venous malformation and vascular tumours.
Background
We evaluated the ability of dMRA to determine the grade of occlusion and collateral
blood flow in acute ischemic stroke patients.
Purpose
Consecutive patients undergoing 3T-MRI within 12h of anterior circulation large artery occlusion
MR protocol
TE 1.17ms
TR 3.15ms
8
Methods
9
Methods
Site of occlusion
4: rapid complete collateral blood flow
TMax>2s vol x
DWI lesion volume
TOF
dMRA
Site of the occlusion Extracranial ICA Intracranial terminal ICA Tandem + terminal ICA + M1 M1
3 (14.3%) 2 (9.5%) 1 (4.7%) 0 1 15 (71.4%)
3 (14.3%) 0 (0%) 4 (19%) 2 2 14 (66.7%)
TIMI 0 1 2 3 NA
14 (66.7%) 4 (19.1%) 0 (0%) 0 (0%) 3 (14.3%)
10 (47.6%) 5 (23.8%) 2 (9.5%) 1 (4.8%) 3 (14.3%)
Results
Results
n=21
0 (0%) 9 (42.9%) 0 (0%) 9 (42.9%) 3 (14.3%)
Asymmetrical clearance deep veins
volume
216.7ml
Results
dMRA at 3T is a fast, direct, feasible, noninvasive, reliable way to assess collateral circulation
This technique provides profound insights into hemodynamic alterations in acute stroke patients
dMRA is potentially useful for the evaluation of vascular occlusion and secondary effects throughout the vascular system; future studies should explore this role.
Conclusions
1
2
3
EP-68
Acute Stroke Patients
No disclosures
Importance of every part of the arterial tree in acute ischemic stroke
Site of occlusion
Functionality of leptomeningeal collaterals
Background
No hemodynamic information
Four-dimensional MR angiography (dMRA) is a time-resolved sequence that
enables the hemodynamic study of cerebral blood vessels. Mainly used in arterio-venous malformation and vascular tumours.
Background
We evaluated the ability of dMRA to determine the grade of occlusion and collateral
blood flow in acute ischemic stroke patients.
Purpose
Consecutive patients undergoing 3T-MRI within 12h of anterior circulation large artery occlusion
MR protocol
TE 1.17ms
TR 3.15ms
8
Methods
9
Methods
Site of occlusion
4: rapid complete collateral blood flow
TMax>2s vol x
DWI lesion volume
TOF
dMRA
Site of the occlusion Extracranial ICA Intracranial terminal ICA Tandem + terminal ICA + M1 M1
3 (14.3%) 2 (9.5%) 1 (4.7%) 0 1 15 (71.4%)
3 (14.3%) 0 (0%) 4 (19%) 2 2 14 (66.7%)
TIMI 0 1 2 3 NA
14 (66.7%) 4 (19.1%) 0 (0%) 0 (0%) 3 (14.3%)
10 (47.6%) 5 (23.8%) 2 (9.5%) 1 (4.8%) 3 (14.3%)
Results
Results
n=21
0 (0%) 9 (42.9%) 0 (0%) 9 (42.9%) 3 (14.3%)
Asymmetrical clearance deep veins
volume
216.7ml
Results
dMRA at 3T is a fast, direct, feasible, noninvasive, reliable way to assess collateral circulation
This technique provides profound insights into hemodynamic alterations in acute stroke patients
dMRA is potentially useful for the evaluation of vascular occlusion and secondary effects throughout the vascular system; future studies should explore this role.
Conclusions
1
2
3
