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.
163 results found
Article
MR arthrogram solution
MR arthrogram solution is a gadolinium-containing mixture injected into a joint for MR arthrography.
Terminology
Fluoroscopy, ultrasound or CT guidance can be used to cannulate a joint, which is then injected with the MR arthrogram solution. MR arthrogram solutions differ in different instit...
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
Percutaneous renal biopsy
Percutaneous renal biopsy, utilizing either ultrasound or CT, allows for an accurate, reliable method of acquiring renal tissue for histopathological assessment.
The biopsy may be of a native or transplant kidney. It is divided into two types:
non-focal or non-targeted
focal or targeted (i.e....
Article
CT guided adrenal biopsy
CT guided adrenal biopsy is usually performed for the diagnosis of indeterminate adrenal nodules or tumors. This procedure has steadily declined in use since 1990s due to improvements in, and validation of, non-invasive CT and MR techniques that can now diagnose benign adrenal lesions with a hig...
Article
Percutaneous cholecystostomy
Percutaneous cholecystostomy is the image-guided placement of a drainage catheter into the gallbladder lumen. This minimally invasive procedure can aid in patient stabilization in order to enable a more measured surgical approach with time for therapeutic planning.
A 2018 study demonstrated no ...
Article
Thoracic duct embolization
Thoracic duct embolization (TDE) is a safe, efficacious treatment for chylothorax 1. Chylothoraces with a low drain output (<1L/day) are traditionally managed conservatively with dietary change, whilst high output (>1L/d) are managed with surgical thoracic duct (TD) ligation 2.
Thoracic duct em...
Article
CT myelography
CT myelography (CTM) is a myelography technique used mainly to assess for potential spinal canal stenosis when MRI is contraindicated or when dynamic imaging is required.
History
CT myelography was first performed in 1976 2 and became the gold standard for imaging the spinal canal and cord unt...
Article
Subtalar joint injection (technique)
Subtalar joint injections are most often performed for osteoarthritis with injection into the posterior subtalar joint. Ultrasound, fluoroscopy and CT guidance can be used.
Indications
osteoarthritis
diagnostic
Contraindications
Absolute
anaphylaxis to contrast/injectates
active local/sy...
Article
Quadratus femoris injection (technique)
Quadratus femoris injections under image guidance ensure precise delivery of an injectate into the quadratus femoris muscle and ensure the sciatic nerve is avoided during the procedure. CT and ultrasound can be used, with ultrasound becoming more challenging in those with larger body habitus.
...
Article
Charles T Dotter
Charles T Dotter (1920-1985) is often considered the father of interventional radiology who in 1964 performed the very first peripheral angioplasty, and made many other major contributions in this field.
Early life
Charles Theodore Dotter was born in Boston on 14 June 1920. He graduated with a...
Article
Radiologically inserted gastrostomy (RIG)
A Radiologically inserted gastrostomy (RIG), or percutaneous radiological gastrostomy (RPG), is a procedure where a gastrostomy tube is inserted percutaneously into the stomach under fluoroscopic guidance, principally to provide nutritional support for patients with swallowing disorders 1. Gastr...
Article
Percutaneous endoscopic gastrostomy
Percutaneous endoscopic gastrostomy (PEG) is a procedure where a flexible feeding tube (commonly known as a PEG tube) is inserted through the abdominal wall and into the stomach via endoscopy. Alternatively a tube can be placed under radiological guidance, known as a radiologically inserted gast...
Article
Rotator cuff calcific tendinitis barbotage
Rotator cuff calcific tendonitis can be treated with various techniques including ultrasound-guided barbotage, which is also known as ultrasound-guided needling and lavage. It is often performed in conjunction with a subacromial bursal injection. Alternative treatments include extracorporeal sho...
Article
Polyvinyl alcohol (PVA)
Polyvinyl alcohol (PVA) particles are type of permanent embolization agent used in interventional radiological procedures.
Mechanism of action
When injected, PVA particles adhere ot the vessel wall, activating the coagulation cascade and leading to vessel occlusion by provoking thrombus format...
Article
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 ...
Article
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...
Article
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...
Article
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...
Article
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...
Article
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 ...
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