Articles
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34 results found
Article
Flow-diverter stent
Flow-diverter stents are important devices in the management of intracranial aneurysms in both acute and elective settings, especially ones that are large, broad-necked, or fusiform.
Complications
Understanding the complication rates is important in obtaining informed consent from patients. In...
Article
Fluoroscopic myelography
Fluoroscopic myelography is a technique that allows the visualization of the theca by the introduction of contrast medium into the CSF. This is usually accomplished by a lumbar puncture, or less commonly a suboccipital puncture.
The patient can then be tilted and rotated to cause the contrast, ...
Article
Adrenal vein sampling
Adrenal vein sampling (AVS) is a procedure where blood is collected from the adrenal veins via catheter to confirm autonomous hormone production, if it is unilateral or bilateral, and to guide further treatment 1. If unilateral, the adrenal gland can be removed by surgery; thus curing secondary ...
Article
Large vessel occlusion
Large vessel occlusion (LVO), also termed proximal large vessel occlusion (PLVO), describes occlusion of a proximal and large-sized intracranial artery resulting in impending acute ischemic stroke. The definition of large vessel occlusion varies significantly among clinical trials of endovascula...
Article
Medium vessel occlusion
Medium vessel occlusion (MeVO), also termed distal medium vessel occlusion (DMVO), describes occlusion of a medium-sized intracranial artery resulting in impending acute ischemic stroke.
Definition
One consensus definition of ‘medium vessel’ suggests intracranial arteries with a luminal diamet...
Article
Modified treatment in cerebral infarction (mTICI) score
The modified treatment in cerebral infarction (mTICI) score was developed from the original thrombolysis in cerebral infarction (TICI) scale by a consensus group in 2013 1. The recommendations included a name change to better reflect the increasing use of endovascular clot retrieval for ischemic...
Article
Endovascular clot retrieval (ECR)
Endovascular clot retrieval (ECR), also known as mechanical thrombectomy (MT) or endovascular thrombectomy (EVT), is increasingly performed in patients presenting with large vessel occlusion (LVO), especially those with a large ischemic penumbra that is likely to progress to ischemic stroke. To ...
Article
Ghost infarct core
Ghost infarct core refers to the phenomenon that CT perfusion may overestimate infarct core on admission, especially in the early time window of a stroke, by predicting lesion in areas that will not show infarct on follow-up imaging 1. This mismatch is defined as the initial infarct core minus f...
Article
Clot meniscus sign (angiography)
The clot meniscus sign, or simply the meniscus sign, is a radiological sign appreciated on digital subtraction angiography in the setting of endovascular clot retrieval for acute ischemic stroke caused by large vessel occlusion.
The sign describes the angiographic appearance of the proximal occ...
Article
Tandem lesion (cerebrovascular)
Tandem lesion, or tandem occlusion, is a term used in cerebrovascular imaging and intervention to refer to the simultaneous presence of high-grade stenosis or occlusion of the cervical internal carotid artery and thromboembolic occlusion of the intracranial terminal internal carotid artery or it...
Article
Thrombolysis in cerebral infarction (TICI) scale
The thrombolysis in cerebral infarction (TICI) grading system was described in 2003 by Higashida et al. 1 as a tool for determining the response of thrombolytic therapy for ischemic stroke. In neurointerventional radiology it is commonly used for patients post endovascular revascularization. Lik...
Article
Expanded treatment in cerebral infarction (eTICI) score
The expanded treatment in cerebral infarction (eTICI) score is modified from the modified treatment in cerebral infarction (mTICI) and thrombolysis in cerebral infarction (TICI) scales. It was published by the HERMES investigators in 2019 1.
Using modified Rankin scale (mRs) shift at 90 days as...
Article
Post-dural puncture headache
Post-dural puncture headache, previously known as post-lumbar puncture headache 4, is a common complication after lumbar puncture (LP), which is often performed for cerebrospinal fluid (CSF) sampling, spinal anesthesia, myelography, etc.
Epidemiology
Post-dural puncture headaches occur after ~...
Article
Brachytherapy
Brachytherapy, also known as sealed source radiotherapy or endocurietherapy, is a form of radiotherapy where a radioactive source is placed, under the guidance of imaging, within or next to the area requiring treatment. This provides localized targeted internal radiation.
Brachytherapy has been...
Article
CT cisternography
Computed tomography (CT) cisternography is a minimally-invasive imaging technique used to visualize the intracranial CSF cisterns using iodinated contrast medium injected into the subarachnoid space.
Indications
detect and localize active CSF leaks through the skull base (CSF rhinorrhea or CSF...
Article
Dry tap (lumbar puncture)
A dry tap refers to a lumbar puncture where cerebrospinal fluid (CSF) cannot be obtained despite the needle tip being in the thecal sac 1. Dry taps may be associated with needle misplacement or blockage, dehydration, low CSF pressure, severe spinal canal stenosis (including epidural lipomatosis)...
Article
Transforaminal epidural steroid injection
Transforaminal epidural steroid injections (TFESI), also known as transforaminal nerve root injections or nerve root blocks, are performed for the treatment and diagnosis of radicular pain. They differ from selective nerve root blocks (SNRB), as the aim is to get an "epidural spill" and get the ...
Article
Epidural blood patch
Epidural blood patches are a treatment option for patients with craniospinal hypotension or post-dural puncture headaches in which small volumes of autologous blood are injected into a patient's epidural space to stop cerebrospinal fluid leak. The procedure can be done blind or under imaging (fl...
Article
Cerebral angiography
Cerebral angiography is an interventional procedure for the diagnosis and/or treatment of intracranial pathology.
Indications
Cerebral digital subtraction angiography (DSA) is indicated in a variety of settings including:
diagnosis and treatment of:
aneurysms 1
acute ischemic stroke
vascul...
Article
Cervical interlaminar epidural steroid injection
Cervical interlaminar epidural steroid injections (ILESIs) are used to inject steroids in the epidural space and around the exiting nerve roots and are one of the two main spinal epidural injections; the other is cervical transforaminal epidural injections.
Indications
Typically performed in ...