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17 results found

Fascia iliaca compartment block (ultrasound)

The fascia iliaca compartment block is a nerve block used to provide anesthesia to the lower extremity commonly in the perioperative period. It is most commonly used for analgesia of the hip, thigh, and knee. It involves the deposition of a local anesthetic beneath the fascia iliaca, targeting t...

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...

Extra-articular injection

Extra-articular injections occur when the needle tip is not within the targeted joint during joint injections. Terminology Defined by the presence of contrast outside of a joint in fluoroscopic or CT guided procedures, or the lack of direct visualization and resisted flow of intra-articular in...

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...

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...

Aortic pseudoaneurysm vs ductus diverticulum

Differentiation of aortic pseudoaneurysm from ductus diverticulum is critical, particularly in the trauma setting. A traumatic aortic pseudoaneurysm is a surgical emergency whereas a ductus diverticulum is a normal anatomic variant. The following are differentiating features: Aortic pseudoaneu...

Esophageal intubation

Esophageal intubation refers to the incorrect placement of an endotracheal tube in the esophagus. Within minutes its consequences can be catastrophic with the seriousness of its outcome depending largely on the timeliness of its diagnosis. Epidemiology Accidental esophageal intubation can happ...

Catheter-directed thrombolysis

Catheter-directed thrombolysis (CDT) is an endovascular approach to the treatment of acute iliofemoral deep vein thrombosis. It involves the administration of a lytic agent directly into a thrombus.  Indications precise diagnosis of iliofemoral deep vein thrombosis  first episode of acute ili...

Multiphase CT angiography in acute ischemic stroke

Multiphase CT angiography is an evolving imaging technique in acute ischemic stroke. The technique aims to quickly and reliably identify brain which is potentially salvageable with intervention. Brain tissue viability depends on many factors, with this technique assessing collateral leptomeninge...

Subacromial bursal injection

Subacromial bursal corticosteroid injections, also known as subacromial-subdeltoid bursal injections, are used in patients with limited or no response to initial treatment with impingement syndrome, subacromial bursitis and/or rotator cuff disorders. Non-steroidal anti-inflammatory drugs (NSAIDs...

Rapid ultrasound in shock

The rapid ultrasound in shock (RUSH) protocol is a structured point-of-care ultrasound (POCUS) examination performed at the time of presentation of a shocked patient. It is a more detailed and longer exam than the FAST scan, with the aim to differentiate between hypovolemic, cardiogenic, obstruc...

Denver criteria for blunt cerebrovascular injury

The Denver criteria are a set of screening criteria used to determine when CT angiography of the neck is indicated to detect blunt cerebrovascular injury (BCVI) in trauma patients.  Screening criteria The Denver criteria were initially developed in 1996 1, modified in 2005 to limit the types o...

Ultrasound-guided FNA of the thyroid

Ultrasound-guided fine needle aspiration (FNA) of the thyroid refers to a minimally invasive procedure where in which tissue samples are collected from a thyroid nodule or other suspicious thyroid lesion. It is usually done on an outpatient basis and generally complications are very minimal. Pr...

Nasogastric tube positioning

Assessment of nasogastric (NG) tube positioning is a key competency of all doctors as unidentified malpositioning may have dire consequences, including death.  Radiographic features Plain radiograph A correctly placed nasogastric tube should 10: descend in the midline, following the path of ...

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...

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...

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...

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