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What are vascular closure devices? A vascular closure device is usually a piece of collagen (a fibrous protein found in skin, bone and connective tissue), metallic clip or suture (stitch) designed to provide immediate sealing of the small puncture made in an artery after an angiogram. Angiography is the imaging of blood vessels that appear on live X-ray images or...

What is venous access? In radiology, venous access generally refers to central venous access, which is the insertion of a specially made thin, flexible tube, known as a catheter, into a central vein. The central veins are the large veins within the chest and abdomen. With a catheter in place, treatments such as chemotherapy or antibiotics can be given through the catheter…

What is varicose vein ablation? Our understanding of varicose veins and how best to treat patients with this problem has improved in the past decade. This is in part due to the use of duplex ultrasound, which is used to look at blood flow in the veins. Normally, blood circulates from the heart to the legs via arteries and back to the heart via the veins. Duplex Doppler ultrasound…

What is radiofrequency ablation? Radiofrequency ablation is a procedure carried out to remove diseased tissue or a tumour (a lump) from the body. It is one type of what is called tumour ablation (or removal). Tumour ablation is where a needle is placed directly into a tumour so that a chemical (usually alcohol or acetic acid) or thermal (heat or ice) treatment can be applied…

What is an image guided lumbar epidural corticosteroid injection? The spine is made up of bones called vertebrae. Between each vertebra is a ‘disc’ that allows the spine to be flexible. The epidural space separates the bony spinal canal (the space in the vertebrae through which the fluid filled sac containing the spinal cord passes) from the fluid-filled tube or sac.…

What is a lumbar nerve root sleeve injection? The spine is made up of bones called vertebrae. Between each vertebra is a ‘disc’ that allows the spine to be flexible. In between adjacent vertebrae, there is an opening on each side called a ‘foramen’, through which a nerve exits on its way to the buttock or leg. The nerve is...

What is a myelogram? The spine is made up of bones called vertebrae. At the front of the spine is solid bone, and at the back there is a bony canal, or channel called the spinal canal. The spinal canal contains a fluid-filled tube extending from the base of the skull to the tailbone. This is called the thecal sac...

What is an image guided facet joint corticosteroid injection? The spine is made up of bones called vertebrae. At the front of the spine is solid bone, and at the back there is a bony canal, or channel. The solid bone is separated from the next bone by a disc. One vertebra is connected to the next vertebra at the back in the bony canal by pairs of facet joints on the right and left sides…

What is a a cervical nerve root sleeve injection? The spine is made up of bones called vertebrae. Between each vertebra is a ‘disc’ that allows the spine to be flexible. The nerves that provide sensation and power to the upper limbs are called cervical nerves. They exit the spine through openings between two adjacent vertebrae called the intervertebral foramina....

What is an ultrasound guided prostate biopsy? An ultrasound guided prostate biopsy is a procedure where a special needle is inserted into the prostate gland to take a small sample of tissue from the gland. The sample is then sent to a laboratory for testing, to determine the presence or absence of prostate cancer. Why would my doctor refer me to have this procedure? Your doctor…

What is a CT colonography? (Also known as CT colonoscopy, virtual colonography or virtual colonoscopy). A computed tomography colonography (CTC), is a CT scan to look at the colon, or large bowel. A CT scan is a specialised X-ray test during which the patient lies on a moving table/bed as it passes through a circular X-ray machine. In order to study the large bowel, dietary…

What is a urethrogram? A urethrogram is an examination of the urethra by X-ray imaging, almost always carried out on males. This information sheet relates to the procedure being carried out on a male. The urethra is the tube that runs from the bladder through the prostate and penis. A urethrogram is usually carried out to show the cause of poor urinary flow thought to be caused…

What is an MRI scan of the prostate? A magnetic resonance imaging (MRI) scanner uses strong magnetic fields to create an image (or picture) of the prostate and surrounding tissues. The prostate gland is a small soft structure about the size and shape of a walnut, which lies deep in the pelvis between the bladder and the penis, and in front of the rectum (back passage). Its function…

What is a cardiac MRI? Magnetic resonance imaging (MRI) uses a high-strength magnet and radio waves to scan the body and produce images or pictures. MRI does not use ionising radiation, which is required for many other types of imaging, and is not known to have any long-term harmful effects. Cardiac MRI is imaging relating to the heart and how it is working. Most people are…

What is a dual energy CT scan? Standard computed tomography (CT) scanners use normal X-rays to make cross-sectional ‘slice-like’ pictures or images of the body. A dual energy CT scanner is fairly new technology that uses both the normal X-ray and also a second less powerful X-ray to make the images. This gives dual energy CT additional advantages over standard CT for…

What is a carpal tunnel ultrasound and injection? The carpal tunnel is located in the wrist, and is formed by the bones of the wrist and the transverse carpal (wrist) ligament. Through this tunnel pass the median nerve, flexor tendons (which help you to curl your fingers) and tendon sheaths (the coverings of the tendons). Carpal tunnel syndrome (also known...

What is carotid stenting? Carotid stenting is when a small, expandable, thin wire device (called a stent) is placed into one of the main arteries that carries blood to the front part of the brain (carotid artery), as it has become partially blocked with abnormal thickening of the artery wall called ‘plaque’. If the supply of blood to the brain...

What is a bone mineral density scan? A dual-energy X-ray absorptiometry scan (DXA), or bone density scan, is a special type of X-ray that measures bone mineral density (BMD). It provides information about bone strength or fragility and the risk of fractures or broken bones. The higher the density, generally, the lower the risk of fracture. The spine and one...