2024年12月29日 · MR vessel wall imaging (VW-MRI) refers to MRI techniques used to evaluate for disease within the walls of arteries, beyond the luminal abnormalities depicted on angiographic imaging.

In theory, dark-blood MRA has some unique advantages compared to bright-blood techniques. Flow separation and turbulence, which cause unwanted signal losses and overestimation of stenoses on bright-blood MRA, paradoxically improve image quality on dark-blood MRA.

Dark ("black") blood MRA techniques suppress signal from flowing blood while maintaining high signal in the surrounding stationary tissues, thus rendering the vessels black. The dark blood effect may be achieved by accentuating flow-related dephasing or exploiting the T1 and T2 properties of blood.

Black blood MRI of intracranial vessel walls can help in a range of pathologies with differing pathophysiology, including intracranial atherosclerosis, aneurysms, vasculitis and vasculopathy, moyamoya disease, dissection and vertebrobasilar hypoplasia.

2019年5月9日 · Black-blood MRI findings were evaluated by 2 independent and blinded neuroradiologists. Large-vessel intracranial arterial segments were graded on a 3-point scale (grades 0–2) for intraluminal baseline T1 hyperintensity and contrast enhancement.

Black Blood imaging can help us to noninvasively visualize vessel wall thickening and enhancement patterns that occur in vasculitis, and help us distinguish it from atherosclerotic lesions.

Black-blood MRA, also known as spatial presaturation MRI, is an alternative MRA technology. Black-blood MRA is able to convert the lumen into a low signal and display the vessel walls with increased image clarity.

Compressed-sensing black-blood MRI combines high image quality with relatively short acquisition time and offers promising potential in the context of neurovascular vessel wall imaging in clinical routine.

In this review we cover the physics of black‐blood contrast and different techniques to achieve blood suppression, from methods intrinsic to the imaging readout to magnetization preparation pulses that can be combined with arbitrary readouts, including flow‐dependent and flow‐independent techniques.

In this review we cover the physics of black-blood contrast and different techniques to achieve blood suppression, from methods intrinsic to the imaging readout to magnetization preparation pulses that can be combined with arbitrary readouts, including flow-dependent and flow-independent techniques.

2021年2月1日 · Black-blood MRI uses a prepulse for suppression of intraluminal gadolinium to create a high-contrast image of the blood vessel wall.

2019年12月18日 · Compressed-sensing black-blood MRI combines high image quality with relatively short acquisition time and offers promising potential in the context of neurovascular vessel wall imaging in clinical routine.

CE black blood (BB) sequences may overcome these limitations by suppressing contrast-enhanced structures, thus facilitating lesion detection. This study compared CNN performance in conventional CE T1 and BB sequences and tested for objective improvement of …

•Imaging of stages of cerebral infarct on MRI/CT •CTP background •Pitfalls of CTP •Managing low cardiac output in CTP •Stroke trials and treatment algorithms •Advanced MRI in stroke

2020年10月27日 · Black (dark) blood imaging is predominantly used to evaluate anatomy and characterize the T1 and T2 properties of tissue. The sequence is referred to as black blood because double-inversion pulse, fast-flowing blood in the imaged slice appears black.

Non-contrast 3D black blood MRI provides accurate and reproducible AAA diameter measurements as validated by CTA. It also provides unique information about ILT composition, which may be linked with elevated risk for disease progression.

2022年12月1日 · Recently, a black-blood compressed-sensing MRI (BBMRI) sequence was introduced. It allows isotropic voxels of 0.5 mm 3, suppression of signal within the vessels, and covering a large volume.

Black Blood imaging can help us to noninvasively visualize vessel wall thickening and enhancement patterns that occur in vasculitis, and help us distinguish it from atherosclerotic lesions.

2020年10月19日 · In this review we cover the physics of black-blood contrast and different techniques to achieve blood suppression, from methods intrinsic to the imaging readout to magnetization preparation pulses that can be combined with arbitrary readouts, including flow-dependent and flow-independent techniques.

Black blood MRI of intracranial vessel walls can help in a range of pathologies with differing pathophysiology, including intracranial atherosclerosis, aneurysms, vasculitis and vasculopathy, moyamoya disease, dissection and vertebrobasilar hypoplasia.

4 天之前 · The newly established CANES (CSVD [Cerebral small vessel disease], AF [Atrial fibrillation], initial National Institutes of Health Stroke Scale [NIHSS] score, Early infarct signs, Systolic blood pressure) model is the first to add computed tomography–visible cerebral small‐vessel disease imaging markers in addition to early infarct signs to predict symptomatic …