Articles

Cases

Courses

Articles

Articles are a collaborative effort to provide a single canonical page on all topics relevant to the practice of radiology. As such, articles are written and continuously improved upon by countless contributing members. Our dedicated editors oversee each edit for accuracy and style. Find out more about articles.

Create new article

247 results found

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 ...

Seldinger technique

The Seldinger technique is the mainstay of vascular and other luminal access in interventional radiology. Uses digital subtraction angiography insertion of central venous catheters insertion of chest drains insertion of pacemaker leads or implantable cardioverter-defibrillators insertion ...

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...

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...

Resuscitative endovascular balloon occlusion of the aorta

Resuscitative endovascular balloon occlusion of the aorta (REBOA) is a treatment for hemorrhagic shock used in major trauma patients with life-threatening abdominal or lower limb bleeding. The aortic balloon is delivered on a catheter via the femoral artery in order to reduce any distal bleedi...

Gluteus minimus/medius calcific tendinopathy barbotage (technique)

Gluteus minimus/medius calcific tendinopathy barbotage is a procedure performed under ultrasound guidance with the aim of reducing the bulk of tendon calcification, in a similar fashion to that performed for rotator cuff calcific tendinopathy. Indications gluteus minimus/medius tendon calcifi...

Greater trochanteric bursa injection (technique)

Greater femoral trochanteric bursa injections under ultrasound guidance ensure the injectate is accurately given into the bursa. The greater trochanteric bursa is the largest of the bursae surrounding the proximal femur, with the others including the subgluteus minimus and subgluteus medius burs...

CT dose index

CT dose index (CTDI) (measured in mGy) is a standardized measure of radiation dose output of a CT scanner which allows the user to compare radiation output of different CT scanners. In the past CTDI100 (measured over a 100 mm long ionization chamber) and CTDIw (weighted average of dose across a ...

MRI targeted prostate biopsy

MRI targeted prostate biopsy refers to an imaging targeted technique rather than the traditional systematic approach of a prostate biopsy after respective imaging with multiparametric MRI (mpMRI) of the prostate. As a consequence of advances with multiparametric MRI (mpMRI) of the prostate in t...

Percutaneous lung tumor ablation

Percutaneous lung tumor ablation techniques are an alternative to surgery or stereotactic body radiotherapy (SBRT) for the treatment of certain malignancies. They have specific indications and contraindications, but are mostly limited to small oligonodular and favourably located lesions. They ...

Superior rectal artery embolization

Superior rectal artery embolization is a minimally invasive endovascular technique that has a role in the management of acute lower gastrointestinal bleeding and as a potential option for the treatment of symptomatic hemorrhoidal disease, this article will focus on the latter. Procedure Perfor...

Periprocedural anticoagulation

Periprocedural anticoagulation planning is essential when planning an interventional procedure so that the best balance between the risk of bleeding and thrombosis can be achieved. The following must be considered in assessment of periprocedural anticoagulation: bleeding risks associated with ...

Angioplasty

Angioplasty, also called balloon angioplasty or percutaneous transluminal angioplasty (PTA), is a minimally invasive interventional procedure in which an inflatable balloon-tipped catheter is introduced through the skin into the vascular lumen to open a stenotic segment of the vessel. Angioplast...

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...

Lumbar puncture

Lumbar punctures (LP) are a commonly performed hospital procedure in which a needle is inserted through the back to the subarachnoid space in the spinal canal, often to collect cerebrospinal fluid (CSF) or inject a therapeutic agent. The procedure can be performed blind via landmarks or under im...

Watchman device

Watchman device is a permanent left atrial appendage closure device, which is percutaneously implanted to prevent embolization of thrombus from the appendage into the systemic circulation in cases of atrial fibrillation. It is used when there is a contraindication to anticoagulation or high risk...

Cauldwell classification

Cauldwell classification is a commonly used classification 4 in assessing bronchial artery branching patterns. Classification The bronchial artery branching pattern is classified into four types based on the number of intercostobronchial trunks (ICBT) - that give rise to the right bronchial ar...

Endovascular aneurysm repair

Endovascular aneurysm repair (EVAR) was first pioneered in the early 1990s. Since then, the technology of the devices has rapidly progressed, and EVAR is now widely used to treat thoracic and abdominal aortic aneurysms (AAA). The advantages of endovascular repair over open repair are that it is...

Uterine artery embolization

Uterine artery embolization (UAE) is an interventional radiological technique to decrease the arterial supply to the uterus and is performed for various reasons. History Uterine artery embolization has been practised for more than 20 years for controlling post-partum hemorrhage. The technique...

Central venous catheter

Central venous catheters (CVC), also known as central venous lines (CVL), refer to a wide range of catheters that are inserted so that their distal tips lie in a central vein. Central venous access devices can broadly be divided into four categories. They may be inserted by medical, surgical, an...

Filtered (2)Done (clear)

+Systems

×Article Sections

×Sort By

ADVERTISEMENT: Supporters see fewer/no ads

Updating… Please wait.

Unable to process the form. Check for errors and try again.

Thank you for updating your details.