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.

7 results found
Article

Endoleak

Endoleaks are characterized by persistent blood flow within the aneurysm sac following endovascular aneurysm repair (EVAR). Normally the aortic stent-graft used for EVAR excludes the aneurysm from the circulation by providing a conduit for blood to bypass the sac. Epidemiology An endoleak is a...
Article

Hemoptysis

Hemoptysis refers to coughing out blood. Generally, it appears bright red in color as opposed to blood from the gastrointestinal tract which appears dark red. It is considered an alarming sign of a serious underlying etiology. Terminology Massive hemoptysis is referred to as expectoration of >...
Article

Iliac vein occlusion

Iliac vein occlusion can be due to the variety of causes including: iatrogenic neonatal catheters catheter dissection injuries  IVC filter insertion dialysis catheters malignancy-related direct tumor invasion radiotherapy  enlarged lymph nodes hypercoagulable state prior DVTs May-Thr...
Article

Medical devices in the abdomen and pelvis

Medical devices in the abdomen and pelvis are important to be recognized, just like medical devices of the chest. Often we ignore these devices, considering them to be incidental and non-pathological, however it is essential to be aware of potential complications. Gastrointestinal tubes stomac...
Article

Microwave ablation

Microwave ablation (MWA) is the application of electromagnetic waves to treat solid tumors. By causing oscillation of polar water molecules, microwaves produce frictional heating and ultimately induce cellular death via coagulation necrosis. This technique has been largely used for the treatment...
Article

Prostate biopsy

Transrectal ultrasound–guided biopsy is considered the standard approach for prostate biopsy and is most commonly performed on an outpatient with a positive screening for prostate cancer.  Nowadays, with the MRI capacity for depicting abnormal areas of the prostate, is possible to obtain target...
Article

Tumor ablation

Tumor ablation, or image-guided tumor ablation, is the direct application of chemical or energy-based (i.e. thermal and nonthermal) treatments to cause local tumor destruction. Techniques include: energy-based techniques thermal ablation radiofrequency ablation (RFA) microwave ablation (MWA)...

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