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.
More than 200 results
Article
Knee joint injection (technique)
Knee joint injections under image guidance ensure precise delivery of an injectate into the knee joint. Either fluoroscopy, ultrasound or CT can be used to guide and administer injectates, which may be diagnostic (e.g. anesthetic), "therapeutic" (e.g. anesthetic/steroids, PRP), or for CT or MR a...
Article
Chiba needle
The Chiba needle is one of the most commonly used biopsy/percutaneous access needles. It is a two-part hollow needle with a beveled tip angled at 30 degrees. The inner stylet (which is also beveled) is removable. The beveling of the Chiba needle results in superior steering compared to conventio...
Article
Ultrasound guided breast biopsy
Ultrasound-guided percutaneous breast biopsy is a widely used technique for an accurate histopathological assessment of suspected breast pathology. It is a fast, safe and economical procedure.
Indications
Ultrasound guidance is limited to lesions visible on ultrasound study. The biopsy is gene...
Article
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...
Article
Thoracentesis
Thoracentesis, commonly known as a pleural tap or chest tap, is a procedure where excess pleural fluid is drained from the pleural space for diagnostic and/or therapeutic reasons. Ultrasound-guided thoracentesis performed by radiologists has been shown to have fewer complications than blind thor...
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
Glenohumeral joint injection (technique)
Glenohumeral joint injections (often referred to as shoulder injections ) are performed as part of a number of therapeutic and imaging procedures using a variety of approaches and modalities. The underlying principles shared by all techniques are to avoid damage to the glenoid labrum, long head ...
Article
Tracheobronchial stent
A tracheobronchial stent is a device used to treat symptomatic airway compression.
This device is inserted under bronchoscopic guidance in patients with external compression from mediastinal-based malignancy, for example, lung or esophageal cancers. It may also be used in the treatment of trac...
Article
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...
Article
Kidney ultrasound
Kidney or renal ultrasound is a non-invasive imaging technique that is widely used due to its safety, accessibility, and real-time capabilities.
Indications
Kidney ultrasound is commonly used in the evaluation and diagnosis of various renal disorders:
abdominal pain or flank pain
hematuria
...
Article
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...
Article
Stereotactic breast biopsy
Stereotactic breast biopsy refers to percutaneous sampling of breast tissue using mammographic guidance for targeting.
Indications
It is the biopsy method of choice when the finding of interest is best seen on mammography, such as microcalcifications (most common), architectural distortion, or...
Article
Intravenous urography
Intravenous urography (IVU) is a radiographic study of the renal parenchyma, pelvicalyceal system, ureters and urinary bladder using intravenous contrast medium. This exam has been largely replaced by CT urography.
Terminology
The term "urography" refers to evaluation of the entire urinary tr...
Article
Transjugular renal biopsy
Transjugular renal biopsy can be performed to obtain an adequate tissue sample for histopathologic diagnosis on renal dysfunctions. It is usually performed in high-risk patients in whom percutaneous renal biopsy is not feasible or is contraindicated. This is also useful in morbidly obese patient...
Article
Shoulder injection (disambiguation)
Shoulder injection is a general term, especially for the patient, for a variety of procedures including:
acromioclavicular joint injection
glenohumeral joint injection
glenohumeral (shoulder) arthrography
glenohumeral (shoulder) hydrodilatation
long head of biceps tendon sheath injection
r...
Article
May-Thurner syndrome
May-Thurner syndrome refers to a chronic compression of the left common iliac vein (CIV) against the lumbar vertebrae by the overlying right common iliac artery (CIA), with or without deep venous thrombosis 2.
Although both left and right CIVs lie deep to the right common iliac artery, the left...
Article
Irreversible electroporation
Irreversible electroporation (IRE), also known as non-thermal irreversible electroporation (NTIRE), is a non-invasive soft-tissue ablation technique used for tumor ablation in regions that require very high precision and preservation of surrounding collagenous structures (vessels and ducts) and ...
Article
Arthrogram (MRI)
An MR arthrogram is an MRI performed after a joint is injected with a solution containing gadolinium. Sometimes abbreviated to MRA, which can be confused with MR angiography. MRI can also be performed after an injection is not directly administered into the joint, via an indirect arthrogram. An ...
Article
Selective internal radiation therapy
Selective internal radiation therapy (SIRT), also known as transarterial radioembolization (TARE) or hepatic radioembolization, is a relatively new and developing modality for treating non-resectable liver tumors. The procedure consists of a transcatheter injection of radioactive particles via t...
Article
Percutaneous nephrostomy salvage and tube exchange
Percutaenous nephrostomy salvage and tube exchange are two procedures undertaken in those with long term nephrostomies. These patients are often either unsuitable or do not wish to have ureteric stenting to relieve their urinary tract obstruction.
Nephrostomy salvage
Nephrostomy salvage is und...
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