Image Guided Injections
Image guided injections are usually performed under either ultrasound or CT guidance. The purpose of the procedure is to relieve pain and discomfort and involves an injection, which is usually a mixture of local anaesthetic and steriod medication. The injection is administered by a Radiologist who uses either CT or ultrasound guidance to target the problem area and deliver the medication precisely to maximise effectiveness. The relief from the pain and discomfort can be temporary or long lasting.
The purpose of a CT guided injection is to administer a steroid medication to the joint or region causing you discomfort. A Radiologist who uses the CT scanner to ensure the needle is in the correct position will perform the procedure.
You will be required to lie on the CT table for approximately 20-30 minutes. The skin is cleaned and the area numbed with local anaesthetic. Once the needle is correctly positioned the steroid medication and further local anesthetic are introduced into the area.
You may experience temporary numbness over the area for up to an hour following the injection. Some patients may be required to stay at Bay Radiology 30-40 minutes until the numbness has resolved.
There is a small risk of bleeding, especially if you are taking a blood thinner such as Warfarin and also a small risk of infection. If you are on a blood thinning agent, please notify us at least TEN days before the procedure.
It may take several days for the steroid injection to work, in the meantime we advise Panadol for discomfort. Following the procedure you should be able to drive home, however you may want to bring someone with you to drive. We advise you to have a quiet day and resume normal activities 24 hours after, as you feel able.
Musculoskeletal Ultrasound involving therapeutic injection
This scan is ideal for showing the tendons, bursae and ligaments in some areas of the body. The most common is the shoulder but ultrasound is also useful in looking at elbows, ankles and hips.
Depending upon what the scan shows it may be of benefit to carry out a therapeutic injection of hydrocortisone (steroid). This is something that is offered by the Radiologist if he/she believes that you will benefit from it. The injection itself is done by the Radiologist using the ultrasound scanner to guide him/her.
You may experience some residual discomfort at the injection site for a few hours afterwards. The possibility of this will be discussed with you prior to any injection being carried out. Usually a mild painkiller is enough to settle the discomfort.
After the scan: The images obtained by the sonographer will be reported by one of our specialist radiologists. The report will be sent to the clinician that referred you for your scan. This normally occurs within 24 hours but it is often sooner, dependent upon how the referrer prefers to receive their reports.
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