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 edited by countless contributing members over a period of time. A global group of dedicated editors oversee accuracy, consulting with expert advisers, and constantly reviewing additions.
217 results found
Article
Flush catheters
Flush catheters are a type of vascular catheter designed to allow high-flow injection rates (15 to 20 ml/s)1 into large vessels, for optimal aortograms and/or phlebograms.
The most common flush catheters are:
pigtail catheter
straight flush catheter
Tennis Racquet catheter
Properties
have ...
Article
Superior vena cava stenting
Superior vena cava stenting is an interventional procedure used for the management of superior vena cava obstruction.
Indication
It is indicated in severe symptomatic superior vena cava obstruction with failure of the medical treatment (corticosteroids, anticoagulation therapy, diuretics, chem...
Article
Simmons catheter
The Simmons catheter, also known as Sidewinder1, Sim, or SS catheter, is a common reverse-curve selective vascular catheter designed for catheterization and subselection of brachiocephalic or visceral arteries, in order to secure access, advance, exchange devices, or deliver contrast in the targ...
Article
Cobra catheter
The cobra tip shape configuration is used in selective vascular catheters and designed for catheterization and subselection of vessels, in order to secure access, advance, exchange devices, or deliver contrast in the target vessel 1.
The cobra tip-shape configuration is also used in urology ren...
Article
Selective vascular catheters
Selective vascular catheters are designed for catheterization and subselection of vessel ostia. They come in different tip shapes that have wall-seeking behavior. They also ensure the advancement down target vessels and provide positional stability during subsequent angiography and manipulation....
Article
Rail guidewires
Rail guidewires, also known as working wires, are interventional procedures wires used during the last steps of interventions and have ideal properties for equipment exchange (e.g. angioplasty balloons, stents). They are inserted in the catheter after reaching the target destination and after re...
Article
CT myelography
CT myelography 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.
Indications
spinal canal stenosis when MRI is contraindicated
dorsal tho...
Article
Access guidewires
Access guidewires are interventional procedures wires used during the first steps of interventions, to secure stable access and sheaths/catheter insertion. They are quickly exchanged for a navigation wire thereafter.
The most common access wires are1:
Cope Mandril wire
Nitrex wire
Properties...
Article
Crawford classification
The Crawford classification is a system used to classify thoracoabdominal aneurysms and has important therapeutic implications. Precise classification of anatomical features allows accurate stratification of risk and appropriate operative planning 1,2.
Classification
The system divides thorac...
Article
Cauldwell classification
Cauldwell classification is a commonly used classification in assessing bronchial artery branching pattern.
Classification
The bronchial artery branching pattern is classified into four types based on the number of intercostobronchial trunks (ICBT) - that gives rise to right bronchial artery a...
Article
Chemical ablation
Chemical ablation is a technique in which chemical ablative substances are used to cause cell death in neoplastic tissue. It is used as a standalone procedure or in combination with other techniques like TACE and radiofrequency ablation.
Agents
absolute ethanol (most commonly used)
acetic aci...
Article
Gastrointestinal stents
Gastrointestinal (GI) stents are increasingly used to treat obstruction of the GI tract, most commonly due to malignancy.
Types of stent
esophageal stent
gastric stent
duodenal stent
enteric stent
colorectal stent
History and etymology
Somewhat surprisingly the word 'stent' is actually a...
Article
Trigeminal radiofrequency ablation
Trigeminal radiofrequency ablation, also known as trigeminal radiofrequency rhizotomy, is a percutaneous interventional procedure used to treat trigeminal neuralgia. It is the most popular technique for trigeminal ablation.
Indications
trigeminal neuralgia resistant to traditional medical trea...
Article
Persistent primitive olfactory artery
A persistent primitive olfactory artery (PPOA) is a rare variant of the proximal anterior cerebral artery 1,2. It is proposed to be more prone to aneurysms due to its sharp hairpin-like turn. Embryologically, the persistent primitive olfactory artery is the rostral division of the primitive inte...
Article
Contraceptive implant migration
Contraceptive implant migration is a rare complication of etonogestrel implant insertion.
Clinical presentation
unable to palpate device in the upper arm
chest pain
dyspnea
non-productive cough
menorrhagia
irregular vaginal bleeding
Pathology
Contraceptive implants are m...
Article
Nephrostogram
Nephrostogram, also known as antegrade pyelogram, is a special x-ray procedure that fluoroscopically evaluates the upper collecting system by introducing water-soluble contrast through the nephrostomy catheter.
Indications
Nephrostogram can be useful to determine tube position or assess resid...
Article
Superior hypogastric nerve block
Superior hypogastric nerve block is a valuable tool for pain relief in the setting of uterine fibroid embolization. This procedure results in significant ischemic pain, peaking at 6-8 hours and lasting approximately 24 hours, then followed by a lesser degree of post-embolization pain which can l...
Article
Cryoablation
Cryoablation refers to the use of thermal energy in the form of very low temperatures to achieve targeted destruction of tumor cells. It is an image-guided technique, currently widely employed in the management of renal 1, hepatic 2 and lung tumors 3.
Historically, a rudimental form of cryosurg...
Article
Pericapsular nerve group block (ultrasound-guided)
Pericapsular nerve group (PENG) blocks are one approach for delivering anesthesia to the hip joint. It is most commonly used in patients with fractures of the hip and bony pelvis 1.
Indications
acetabular fractures 5
pubic rami fractures
proximal femoral fractures
intertrochanteric fractur...
Article
Quadratus femoris injection (technique)
Quadratus femoris injections under image guidance ensure precise delivery of an injectate 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.
Indications
therapeutic for ischi...
Article
Z-track technique for paracentesis
The Z-track technique is used for paracentesis. It produces a non-linear track between the dermis and the peritoneum, and this serves to decrease the chance of ascitic fluid leakage through the track.
Procedure
Instead of directly sticking the access needle from the skin surface into the perit...
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 - final...
Article
Angioleiomyoma
Angioleiomyomas, also known as angiomyomas or vascular leiomyomas, arebenign pericytic or perivascular soft tissue tumors.
Epidemiology
Angioleimyomas are rare and have been observed in a wide age range with a peak in the 4th to 6th decades of life. Generally, women are more commonly affecte...
Article
Lumbar puncture
Lumbar puncture is 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 some cerebrospinal fluid or inject a therapeutic agent. The procedure can be performed under imaging guidance, e.g. fluoroscopy...
Article
Trocar technique
The trocar technique is a common technique for surgical procedures and interventional placement of tubes and drainage where instruments, tubes or drains are advanced to the target location through a fixed cannula or hollow tube namely the trocar, which acts as a portal in the process.
History
...
Article
Percutaenous renal tumor ablation
Percutaneous ablation in the kidney is now performed as a standard therapeutic nephron-sparing option in patients who are poor candidates for resection. It is performed via radiofrequency ablation or cryoablation.
Follow-up time frame
Can vary according to center but usually includes contrast-...
Article
Subtalar joint injection (technique)
Subtalar joint injections are most often performed for osteoarthritis and the posterior subtalar joint is targeted. Ultrasound, fluoroscopy and CT guidance can be used.
Indications
osteoarthritis
diagnostic
Contraindications
Absolute
anaphylaxis to contrast/injectates
active local/system...
Article
No-touch ablation technique
No-touch ablation techniques, using either microwave or radiofrequency to generate heating, refer to approaches whereby the probes are placed at multiple oblique sites tangential and adjacent to the targeted tumor (cf. probe placement centrally within the tumor).
Indications
For general indic...
Article
Pudendal nerve block (technique)
Pudendal nerve blocks are performed on those with suspected or proven pudendal neuralgia. Using CT will ensure accurate needle placement, which aims for a perineural pudendal nerve injection in the pudendal canal, also known as Alcock's canal.
Indications
pudendal neuralgia
diagnostic
Contr...
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
Bariatric embolization
Bariatric embolization is an interventional procedure performed with a view to inducing weight-loss in the treatment of obesity. Evidence from clinical trials suggests that the procedure is well tolerated and has a good safety profile. Early studies demonstrate a mild-moderate beneficial effect....
Article
Arthrocentesis
Arthrocentesis or joint aspiration is an interventional procedure done for the collection of synovial fluid.
History
The existence of liquid inside joints was first mentioned in the Corpus Hippocraticum, later in the 16th century, Paracelsus coined the name “synovia” for synovial fluid.
Indic...
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
EUS-guided biliary drainage
Endoscopic ultrasound (EUS)-guided biliary drainage is an alternative to conventional transpapillary and percutaneous biliary drainage in where an extra-anatomic route is created between the biliary tree and the gastrointestinal tract.
Indications
failed endoscopic transpapillary biliary drai...
Article
Endosaccular flow disruption devices
Endosaccular flow disruption devices, also simply known as flow disruptors, are used for the treatment of either ruptured or unruptured saccular, wide-neck, usually bifurcation as well as side-wall intracranial aneurysms. Their primary function is to stop blood from flowing into the aneurysm, al...
Article
Billowing phenomenon
Billowing phenomenon refers to the presence of contrast medium on contrast-enhanced CT outside of graft metal struts, due to the specific construction characteristic typical of the AFX® stent-graft (Endologix, Inc., USA), designed to treat abdominal aortic aneurysms. It has a unique internal sca...
Article
Remasking
Remasking is a post-processing technique used to improve misregistration artifact in digital subtraction angiography (DSA), where a frame taken after patient motion is selected as the new mask image for subtraction.
In digital subtraction angiography, misregistration (improper image registratio...
Article
Inferior vena cava filter retrieval
Inferior vena cava filter retrieval is an endovascular procedure whereby a previously placed inferior vena cava (IVC) filter is removed.
Procedure
The procedure is performed under local anesthesia with fluoroscopic guidance. Venous access is usually gained via the internal jugular vein with di...
Article
Superior rectal artery embolization
Superior rectal artery embolization is a minimally invasive endovascular technique which has a role in the management of acute lower gastrointestinal bleeding and has recently re-emerged as a potential option for the treatment of symptomatic hemorrhoidal disease, this article will focus on the l...
Article
Endovascular arteriovenous fistula creation
Endovascular arteriovenous fistula creation is a recently developed minimally invasive alternative for the creation of arteriovenous fistulae for haemodialysis access.
Technique
Catheter-based technology and image guidance in the form of ultrasound and fluoroscopy is utilized create a side-to-...
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
Sternoclavicular joint injection (technique)
Sternoclavicular joint (SCJ) injections under image guidance ensure precise delivery of an injectate into the joint and importantly that needle depth is under direct visualization.
Indications
pain
arthropathy, e.g. osteoarthritis
diagnostic injection
Contraindications
Absolute
anaphyla...
Article
Hip joint injection (technique)
Hip joint injections can be performed with a variety of image guidance, including fluoroscopy and ultrasound, which are used to administer MRI arthrogram injectate, or a steroid containing anesthetic arthrogram injectate.
Indications
MRI: labral injury
anesthetic
pain/arthropath...
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
Long head of biceps brachii tendon sheath injection (technique)
Long head of biceps brachii (LHB) tendon sheath injections under ultrasound guidance ensure accurate delivery of injectate, which is important as these injections are often performed for diagnostic purposes.
Indications
pain
diagnostic injection
alternative access to the glenohumer...
Article
Acromioclavicular joint injection (technique)
Acromioclavicular joint (ACJ) injections under image guidance ensure precise delivery of an injectate into the joint. Ultrasound allows for real-time visualization of the needle and administration of the injectate. Fluoroscopy is an alternative method of image guidance.
Indications
pain: a...
Article
Twig-like middle cerebral artery
Twig-like middle cerebral artery or rete mirabile anomaly describes a discontinuity of a single trunk of the middle cerebral artery with several small vessels reconstituting the artery and giving it a twig-like appearance. Distally, normal vascular anatomy of the MCA branches need to be present ...
Article
Percutaneous liver tumor ablation
Percutaneous liver tumor ablation techniques are well-established and effective therapeutic alternatives for the treatment of primary and secondary liver tumors. Hepatocellular carcinoma (HCC) and colorectal oligometastatic disease are the most common indications. There are specific indications ...
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 ...
Article
Interventional radiology in practice
Interventional radiology procedures within medical imaging span multiple subspecialties and modalities. This is a collection of articles exploring indications, techniques and practice applications of interventional procedures within radiology.
In pediatrics, the most common interventional proce...
Article
Ulnar nerve block (ultrasound-guided)
Ulnar nerve blocks are an approach for delivering anesthesia to the ulnar nerve territory either as a standalone blockade or combined with brachial plexus, radial or median nerve block.
Indications
burns involving tissue in the ulnar nerve territory
rescue analgesia for failed brachial plexus...
Article
Radial nerve block (ultrasound-guided)
Radial nerve blocks are a procedure for delivering anesthesia to the radial nerve territory either as a standalone blockade or in conjunction with a brachial plexus, ulnar or median nerve block.
Indications
association with median nerve block
radial tunnel syndrome
forearm and hand surgical ...
Article
Median nerve block (ultrasound-guided)
Median nerve block is a technique used for providing anesthesia to the median nerve territory, it may be performed at the level of the arm, elbow, forearm or the wrist.
Indications
fracture reductions
surgical repair of fractures
incision and drainage of cysts and abscesses
post-op...
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
Tachon syndrome
Tachon syndrome is a rare systemic side effect of epidural or intra-articular corticosteroid injections.
Clinical presentation
Minutes after injection, patients may complain of 1:
acute low back pain
chest tightness
facial erythema
profuse sweating
cough
agitation
Treatment and prognosi...
Article
Arthrogram (anesthetic)
An arthrogram injection is a procedure in which a solution is administered into a joint under imaging guidance. These procedures are more accurately named direct arthrogram injections, although they are routinely known as arthrograms. Fluoroscopy, ultrasound, and CT can be used for image guidanc...
Article
Arthrogram (CT)
A CT arthrogram is a CT performed after a joint is injected with a solution containing iodinated contrast. They are not commonly abbreviated as CTA, which will be confused with CT angiography. An arthrogram also refers to the procedure of injecting a joint.
Indications
shoulder: instability...
Article
Arthrogram
An arthrogram (or arthrography) is a commonly performed procedure in musculoskeletal radiology, which can refer to both an injection into a joint, and cross-sectional imaging after a joint is injected.
Indications
Arthrograms are performed for a variety of indications including:
labral te...
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
Juan M Taveras
Juan M Taveras (1919-2002) was an Dominican neuroradiologist, who is remembered chiefly for his work in establishing neuroradiology as a separate subspecialty in the United States. He was the principal mover behind the founding of the American Society of Neuroradiology and its primary publicati...
Article
Splenic biopsy
Percutaneous splenic biopsy, using either ultrasound or CT guidance, is an accurate and reliable method of acquiring splenic tissue for histopathological assessment and has been proposed as an alternative for splenectomy in selected patients.
Although the procedure has been historically feared ...
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 the recent advances of multiparametric MRI (mpMRI) of the pros...
Article
Symphyseal cleft injection
Symphyseal cleft injections (symphysography) are performed as both diagnostic and therapeutic measures for patients with (suspected) osteitis pubis, usually under CT or fluoroscopy.
Indications
suspected or confirmed osteitis pubis
Contraindications
factors to be considered as per any muscu...
Article
Groshong catheter
Groshong catheters are a type of central venous catheter, which are placed under direct fluoroscopic visualization in an angiography suite. They can be tunneled or non-tunneled and are similar to a Hickman catheter, with the main difference being that Groshong catheters have a three-way valve at...
Article
Esophageal varix
Esophageal varices describe dilated submucosal veins of the esophagus, and are an important portosystemic collateral pathway. They are considered distinct from gastric varices, which are less common.
Epidemiology
Esophageal varices are present in ~50% of patients with portal hypertension 1,2. ...
Article
Preoperative pulmonary nodule localization
Preoperative pulmonary nodule localization is a CT-guided procedure where a marker is applied to a usually small lung lesion to assist in its surgical identification and resection. The widespread use of video-assisted thoracic surgery (VATS) and the advance in robotically assisted surgical inter...
Article
Tumor ablation
Tumor ablation, or image-guided tumor ablation, is the direct application of chemical or energy-based (i.e. thermal and non-thermal) treatments to cause local tumor destruction. Techniques include:
energy-based techniques
thermal ablation
radiofrequency ablation (RFA)
microwave ablation (MWA...
Article
Key figures in the history of radiology
In the history of radiology certain key figures stand out for their groundbreaking contributions to the establishment and development of radiology as a science, medical specialty and major advance in patient care. This list is by necessity arbitrary, although we (the editors) hope that the major...
Article
Expanded treatment in cerebral ischemia (eTICI) score
The expanded treatment in cerebral infarction (eTICI) score is a modified from the modified treatment in cerebral infarction (mTICI) and thrombolysis in cerebral infarction (TICI) scales. It was published by the HERMES investigators in 20191.
Using modified Rankin scale (mRs) shift at 90 days a...
Article
Robotics in interventional radiology
Robotics in interventional radiology (IR) is an emerging area following the growth of engineering technology. Machine-assisted procedures are already performed in various disciplines including general, cardiothoracic and urologic surgery. The best-known is the Da Vinci® Surgical System. The appl...
Article
Superficial cervical plexus nerve block (ultrasound)
The superficial cervical plexus nerve block is a field block indicated for procedures involving, and anesthesia of, the anterolateral neck and the skin overlying the clavicle. The superficial cervical plexus (SCP) includes the greater auricular, lesser occipital, transverse cervical, and supracl...
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
Implantable port
Implantable ports, also known as chemoports, totally implantable central venous access ports or Port-A-Caths, are a type of central venous catheter for patients requiring long-term venous access. They offer the ability to have long-term central venous access with some of the advantages over peri...
Article
Radiologically inserted gastrostomy (RIG)
A radiologically inserted gastrostomy (RIG) is a procedure where a tube is inserted percutaneously into the stomach, principally to provide nutritional support for patients with swallowing disorders 1.
Indications
inadequate oral intake due to dysphagia (neurologic disorder, esophageal obstruc...
Article
Denver shunt
A Denver shunt, or peritoneovenous shunt, is a device used to shunt ascites to the superior vena cava in patients with refractory ascites.
The proximal end is located in the peritoneal cavity and the distal end in the superior vena cava, with a subcutaneous course in the anterior chest wall. It...
Article
Peritoneal dialysis catheter
A peritoneal dialysis catheter is a flexible tube designed for peritoneal dialysis, the most well-known and widely-used being the Tenckhoff catheter.
From an MRI perspective, the Tenckhoff catheter has an extraperitoneal tungsten tip which is MRI-compatible, however, it will cause some suscept...
Article
Venous intravasation
Venous intravasation is the unintended introduction of radiographic contrast material into the local venous system. It is a well-recognized phenomenon during retrograde urethrograms 1,2 and hysterosalpingograms (HSG), although can occur with other invasive procedures in the vicinity of venous pl...
Article
Balloon-occluded retrograde transvenous obliteration
Balloon-occluded retrograde transvenous obliteration (BRTO) is a technique used by interventional radiologists in the treatment of gastric varices, particularly those with prominent infra-diaphragmatic portosystemic venous shunts (e.g. gastro-renal and gastro-caval shunts).
The technique is mor...
Article
Heimlich valve
The Heimlich valve, also known as the flutter valve, is a unidirectional valve to ensure that gas/fluid drained from the pleural space cannot flow back in.
The Heimlich valve is cheap, easy to use, and does not require clamping unlike 'traditional' thoracostomy drainage tubes. Suction can stil...
Article
Liver biopsy (percutaneous)
Percutaneous liver biopsy, utilizing either ultrasound or CT guidance, allows for an accurate and reliable method of acquiring hepatic tissue for histopathological assessment. It is divided into two types:
non-focal or non-targeted liver biopsy (used in the assessment and staging of the pare...
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 ...
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
Resuscitative endovascular balloon occlusion of the aorta
Resuscitative endovascular balloon occlusion of the aorta (REBOA) is a recently developed 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 reduc...
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
Periprocedural anticoagulation
When planning an interventional procedure a patient’s coagulation status must be assessed and optimized to best balance the risk of bleeding and thrombosis. The following must be considered;
bleeding risks associated with the procedure
medications the patient is taking that alter coagulation o...
Article
Hickman catheter
Hickman catheters (or Hickman lines) are a type of tunneled central venous access line.
Radiographic features
Hickman catheters are typically inserted into either jugular vein, and the proximal tubing is tunneled through the subcutaneous tissues to a skin incision on the chest. The distal part...
Article
Ultrasound-guided spinal anesthesia
With the growing incidence of obesity in the western world, ultrasound-guided anesthesia is becoming more common. Spinal anesthesia is traditionally administered by identifying relevant surface anatomy and imaging is rarely used for pre-procedural identification of structures.
Indications
low...
Article
Needle gauge system
The needle gauge system, often called just the Gauge or G, is an internationally-used scale for sizing needles. It was adopted from pre-existing gauges which were used in industry to size metal wire.
In contradistinction to the French scale, the other well-known sizing system, which is a metric...
Article
French gauge
The French gauge (Fr) (also known as the French scale or system) is used to size catheters, and other instruments, in interventional radiology and surgery. In some parts of the world, the Charrière (Ch) is used as the name of the unit, in honor of its inventor.
French sizing
The French system...
Article
Woggle technique (interventional procedure)
The Woggle technique is the purse-string suture modified using to close a puncture site after a percutaneous procedure.
Techniques common to all procedure include:
a purse-string suture is done around the introducer sheath (the short plastic tube placed within a vein or artery)
cut the needle...
Article
Intercostal catheter
The intercostal catheter (ICC or chest tube) is a tube inserted into the pleural space to drain gas or fluid. It is mainly inserted to treat pneumothorax.
Indication
The indications are wide and can include 1:
pneumothorax
chest trauma
pleural effusion
hemothorax
chylothorax
...
Article
Sven-Ivar Seldinger
Sven-Ivar Seldinger (1921-1998), a Swedish radiologist, is primarily remembered for the invention of his revolutionary eponymous technique.
Early life
Sven-Ivar Seldinger was born in Mora, Dalarna, Sweden on 19 April 1921 5. He attended medical school at the Karolinska Institute in Stockholm ...
Article
Patient safety checklist (interventional radiology)
Patient safety has been defined as the absence of preventable harm to a patient during the process of healthcare. Patient safety checklists have been developed by interventional radiologists to govern patient safety and they are useful for the practitioner to keep in mind to ensure every patient...