Dark Blood Mri
Dark Blood Mri - Related Videos
01:14
Dark Blood Magnetic Resonance Imaging for Visualizing Inflamed Intracranial Arteries
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2025
Start with a human patient with cerebral vasculitis, which causes inflammation and increased permeability of blood vessels in the brain.Place the patient's head inside the radiofrequency, or RF, coil of a magnetic resonance imaging, or MRI, machine.Initiate magnetic resonance angiography, or MRA, which uses RF pulses to image blood flow.Protons in flowing blood generate strong signals, making blood vessels appear bright, while weak signals from stationary tissues result in a dark...
08:36
Functional Neuroimaging Using Ultrasonic Blood-brain Barrier Disruption and Manganese-enhanced MRI
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Cited by 4 •
2012
A technique is described for broadly opening the blood-brain barrier in the mouse using microbubbles and ultrasound. Using this technique, manganese can be administered to the mouse brain. Because manganese is an MRI contrast agent that accumulates in depolarized neurons, this approach enables imaging of neuronal activity.
07:42
MRI-guided Disruption of the Blood-brain Barrier using Transcranial Focused Ultrasound in a Rat Model
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Cited by 18 •
2012
Microbubble-mediated focused ultrasound disruption of the blood-brain barrier (BBB) is a promising technique for non-invasive targeted drug delivery in the brain1-3. This protocol outlines the experimental procedure for MRI-guided transcranial BBB disruption in a rat model.
01:29
Dark Triad and Person Perception
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2025
Person perception is influenced by both external behaviors and the observer’s internal characteristics, including personality traits. Individuals with dark personality traits, comprising psychopathy, Machiavellianism, and narcissism — collectively known as the dark triad – exhibit manipulative and exploitative tendencies in social contexts. These traits affect how they perceive others and how they are perceived.The Role of Dark Personality Traits in Person PerceptionBlack et al. (2014) explored...
06:06
Optogenetic Functional MRI
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Cited by 15 •
2016
This protocol describes the steps and data analysis required to successfully perform optogenetic functional magnetic resonance imaging (ofMRI). ofMRI is a novel technique that combines high-field fMRI readout with optogenetic stimulation, allowing for cell type-specific mapping of functional neural circuits and their dynamics across the whole living brain.
FAQs
Double-inversion recovery uses blood-suppression preparations to reduce signal from moving spins, particularly those associated with flowing blood. Stationary tissues retain useful contrast, allowing abnormalities in the vessel wall to stand out more clearly. This distinction helps investigators assess wall thickening, plaque, inflammation, or structural injury that may be difficult to appreciate when blood produces a strong signal.
Suppressing the signal from flowing blood reduces interference between the vessel lumen and its surrounding wall. As a result, changes located within or adjacent to the wall become easier to distinguish on the image. In neuroscience research, this supports examination of pathological processes such as intracranial atherosclerosis, vasculitis, aneurysms, and dissection.
Conventional bright-blood imaging emphasizes signal from blood, whereas Dark Blood MRI reduces that signal to improve visualization of vessel walls and nearby brain structures. The two approaches therefore provide complementary information rather than identical views. Angiographic imaging can show vascular anatomy, while dark-blood imaging adds detail about wall thickening, plaque, inflammation, or injury.
A typical workflow incorporates a blood-suppression preparation, such as double-inversion recovery, into the magnetic resonance acquisition. The preparation reduces signal from moving spins before images are collected, while stationary tissues retain contrast. Researchers then examine the resulting vessel-wall and surrounding-structure appearance for abnormalities relevant to cerebrovascular disease.
Researchers may use Dark Blood MRI when the study requires assessment of intracranial vessel-wall pathology rather than vascular lumen appearance alone. Relevant applications include investigating intracranial atherosclerosis, aneurysms, vasculitis, and dissection. By revealing wall thickening, plaque, inflammation, or structural injury, the technique helps connect vascular abnormalities with mechanisms and consequences of cerebrovascular disease.
Dark-blood imaging can add information about the vessel wall and nearby brain structures that may not be fully represented by angiographic views. Its contrast may help identify wall thickening, plaque, inflammation, or structural injury. Used together, these imaging perspectives support a more complete evaluation of cerebrovascular abnormalities and strengthen neuroscience research into their underlying mechanisms.