scholarly journals Acceleration-selective Arterial Spin-labeling MR Angiography Used to Visualize Distal Cerebral Arteries and Collateral Vessels in Moyamoya Disease

Radiology ◽  
2018 ◽  
Vol 286 (2) ◽  
pp. 611-621 ◽  
Author(s):  
Osamu Togao ◽  
Akio Hiwatashi ◽  
Makoto Obara ◽  
Koji Yamashita ◽  
Kazufumi Kikuchi ◽  
...  
Keyword(s):  
Moyamoya Disease ◽  
Arterial Spin Labeling ◽  
Mr Angiography ◽  
Cerebral Arteries ◽  
Spin Labeling ◽  
Collateral Vessels

Vessel-selective 4D-MR angiography using super-selective pseudo-continuous arterial spin labeling may be a useful tool for assessing brain AVM hemodynamics

2020 ◽  
Vol 30 (12) ◽  
pp. 6452-6463 ◽  
Author(s):  
Osamu Togao ◽  
Makoto Obara ◽  
Michael Helle ◽  
Koji Yamashita ◽  
Kazufumi Kikuchi ◽  
...  
Keyword(s):  
Arterial Spin Labeling ◽  
Mr Angiography ◽  
Spin Labeling ◽  
Brain Avm ◽  
Continuous Arterial Spin Labeling

scholarly journals A case of Young Stroke due to Moyamoya Disease

2020 ◽  
Vol 15 (1) ◽  
pp. 110-113
Author(s):  
Md Abdur Razzak ◽  
Ghulam Kawnayn ◽  
Fateha Naznin ◽  
Quazi Audry Arafat Rahman
Keyword(s):  
Moyamoya Disease ◽  
Past History ◽  
Cerebral Arteries ◽  
Armed Forces ◽  
Cerebral Angiogram ◽  
Medical College ◽  
Middle Cerebral Arteries ◽  
History Of ◽  
Collateral Vessels ◽  
The Right

Moyamoya disease is a disease in which certain arteries in the brain are constricted. Blood flow is blocked by the constriction, and also by blood clots (thrombosis). A collateral circulation develops around the blocked vessels to compensate for the blockage, but the collateral vessels are small, weak, and prone to bleeding, aneurysm and thrombosis which may result in TIA, recurrent ischemic or hemorrhagic stroke or seizure. The disease may manifest in pediatric age or young adults. In May 2019 we have diagnosed a young lady with Moyamoya disease who presented with right sided hemiplegia, motor aphasia and dysphagia. She was labeled as hypertensive 6 months prior to this event and used to take anti-hypertensive irregularly and gave past history of occasional headache. Her CT scan and MRI of brain revealed left sided ischemic infarct involving frontotemporoparietal region and cerebral angiogram revealed narrowing of left MCA and non-visualization of distal part. There is extensive fine collaterals (Moyamoya vessels) giving the appearance of puffed smoke. The right ACA and MCA were also narrowed with appearance of early collateral vessels. She was treated with aspirin, PPI, NG feeding, antihypertensive medication, physiotherapy, rehabilitation therapy and other supportive care. His condition gradually improved and discharged on 2.7.19. He was referred to Department of Neurosurgery for cerebral revascularization by STA-MCA (superficial temporal and middle cerebral arteries) bypass surgery after stabilization and MR perfusion study. Journal of Armed Forces Medical College Bangladesh Vol.15 (1) 2019: 110-113

Moyamoya Disease

2019 ◽  
pp. 149-156
Author(s):  
Edward Smith
Keyword(s):  
Moyamoya Disease ◽  
Cerebral Arteries ◽  
Pressure Control ◽  
Vascular Supply ◽  
External Carotid Artery ◽  
External Carotid ◽  
Middle Cerebral Arteries ◽  
Detailed Assessment ◽  
Collateral Vessels ◽  
Carotid Circulation

Moyamoya disease is defined by stenosis of the distal intracranial internal carotid arteries up to and including the bifurcation, with segments of the proximal anterior and middle cerebral arteries, dilated basal collateral vessels, and bilateral findings. Detailed assessment with digital subtraction angiography will define the severity of disease (Suzuki stage) and presence of spontaneous transdural collateral vessels from external carotid artery branches. These collateral vessels must be protected during surgical intervention. The surgical goal is to establish a new vascular supply to the areas of the brain at risk for stroke, utilizing vessels from the external carotid circulation. Blood pressure control and avoidance of hyperventilation are key to minimize perioperative stroke risk. Preoperative hydration, ongoing use of aspirin, and good pain control will also minimize surgical complications.

Acceleration-selective arterial spin labeling MR angiography for visualization of brain arteriovenous malformations

2019 ◽  
Vol 61 (9) ◽  
pp. 979-989 ◽  
Author(s):  
Osamu Togao ◽  
Akio Hiwatashi ◽  
Koji Yamashita ◽  
Daichi Momosaka ◽  
Makoto Obara ◽  
...  
Keyword(s):  
Arterial Spin Labeling ◽  
Arteriovenous Malformations ◽  
Mr Angiography ◽  
Spin Labeling ◽  
Brain Arteriovenous Malformations

Arterial transit artifacts observed by arterial spin labeling in Moyamoya disease

2020 ◽  
Vol 29 (9) ◽  
pp. 105058 ◽  
Author(s):  
Ryo Ukai ◽  
Takeshi Mikami ◽  
Hiroshi Nagahama ◽  
Masahiko Wanibuchi ◽  
Yukinori Akiyama ◽  
...  
Keyword(s):  
Moyamoya Disease ◽  
Arterial Spin Labeling ◽  
Spin Labeling

Arterial Spin-Labeling Magnetic Resonance Imaging After Revascularization of Moyamoya Disease

2013 ◽  
Vol 22 (6) ◽  
pp. 811-816 ◽  
Author(s):  
Toshiya Sugino ◽  
Takeshi Mikami ◽  
Kei Miyata ◽  
Kengo Suzuki ◽  
Kiyohiro Houkin ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Moyamoya Disease ◽  
Arterial Spin Labeling ◽  
Spin Labeling ◽  
Resonance Imaging

scholarly journals Noninvasive Assessment of Arterial Compliance of Human Cerebral Arteries with Short Inversion Time Arterial Spin Labeling

2015 ◽  
Vol 35 (3) ◽  
pp. 461-468 ◽  
Author(s):  
Esther AH Warnert ◽  
Kevin Murphy ◽  
Judith E Hall ◽  
Richard G Wise
Keyword(s):  
Arterial Spin Labeling ◽  
Arterial Input Function ◽  
Arterial Compliance ◽  
Cerebral Arteries ◽  
Spin Labeling ◽  
Input Function ◽  
Inversion Time ◽  
Arterial Blood ◽  
Left Posterior ◽  
Middle Cerebral Arteries

A noninvasive method of assessing cerebral arterial compliance (AC) is introduced in which arterial spin labeling (ASL) is used to measure changes in arterial blood volume (aBV) occurring within the cardiac cycle. Short inversion time pulsed ASL (PASL) was performed in healthy volunteers with inversion times ranging from 250 to 850 ms. A model of the arterial input function was used to obtain the cerebral aBV. Results indicate that aBV depends on the cardiac phase of the arteries in the imaging volume. Cerebral AC, estimated from aBV and brachial blood pressure measured noninvasively in systole and diastole, was assessed in the flow territories of the basal cerebral arteries originating from the circle of Willis: right and left middle cerebral arteries (RMCA and LMCA), right and left posterior cerebral arteries (RPCA and LPCA), and the anterior cerebral artery (ACA). Group average AC values calculated for the RMCA, LMCA, ACA, RPCA, and LPCA were 0.56%±0.2%, 0.50%±0.3%, 0.4%±0.2%, 1.1%±0.5%, and 1.1%±0.3% per mm Hg, respectively. The current experiment has shown the feasibility of measuring AC of cerebral arteries with short inversion time PASL.

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