Computed tomography of the wrist

Computed tomography (CT) of the wrist is an advanced diagnostic imaging technique that uses X-rays to produce detailed cross-sectional images of the wrist’s anatomical structures. It is one of the most accurate examinations, making it possible to evaluate bones, joints and soft tissues in this part of the body.

Indications for a CT scan of the wrist

Computed tomography is usually not the first imaging test used in diagnosing wrist conditions. When a patient reports complaints related to the wrist, the doctor usually starts by ordering an X-ray of the area. Only when more detailed imaging is required may a CT scan be ordered.

Indications for CT scans of the wrist include:

  • suspected fractures, especially if a standard X-ray does not provide sufficient information;
  • assessing injuries, for instance complex sports injuries;
  • cancer diagnosis in order to evaluate the presence of tumours, cysts or other tissue lesions;
  • assessing inflammation, for instance in cases of rheumatoid arthritis;
  • surgery planning: CT can be used for detailed planning of surgical procedures.

Contraindications to wrist CT scans

The primary contraindication is pregnancy. Exposure to X-rays, even in the case of a wrist examination, can pose a risk to the foetus. CT in pregnant women is only performed when absolutely necessary and the benefits of the test outweigh the potential risks. In such cases, other diagnostic methods that do not involve radiation, such as ultrasound or magnetic resonance imaging (MRI), are also considered.

If a wrist CT scan involves contrast administration (which improves the visibility of carpal structures on the images), patients with allergies to contrast agents may be at risk of an allergic reaction, which can be mild, such as a rash, but can also be severe (such as an anaphylactic reaction) in rare cases. In such situations, appropriate allergy medications may be administered before the examination or other diagnostic methods may be considered.

It may be difficult to obtain clear images in patients who are unable to hold their wrist still for the duration of the scan. This is especially true for those with severe neurological or psychological conditions.

What does a CT scan of the wrist look like?

The patient lies down on a table and the wrist is placed in the correct position for the scan. It is important that the wrist remain still during the examination. The CT scanner acquires a series of images, which are then processed by a computer to produce cross-sectional images of the wrist.

The scanning itself is relatively quick and usually takes a few to around a dozen minutes. However, the appointment may take somewhat longer, since it includes preparations for the scan and possible administration of the contrast agent. After the examination, the patient may be asked to stay under observation for a while, especially if the examination involved contrast administration, to make sure there are no adverse reactions. During the examination, the patient remains in constant contact with the medical staff.

The images obtained during the scan are processed by a computer and analysed by a radiologist who prepares a detailed report. The results are subsequently forwarded to the attending physician who discusses them with the patient and decides on further treatment. Wrist CT scan is a painless and non-invasive procedure that provides highly accurate images, helping diagnose a variety of conditions in this area of the body.

How to prepare for a wrist CT scan?

The scan usually does not require any special preparation, but if the examination involves the use of contrastadequate preparation is necessary, including for instance stopping medication, coming to the examination fasted and bringing test results such as blood creatinine levels. This will be communicated in advance by the physician who will indicate exactly how to prepare. The patient must also have a referral.

Prior to the examination, the patient may be asked to remove all jewellery, watches and other metal objects from the wrist area, as these may interfere with image quality.

How long does a CT scan of the wrist take?

A computed tomography scan of the wrist is a relatively quick examination. The scanning itself usually takes a few to around a dozen minutes. This time may be slightly increased if the examination involves the administration of a contrast agent. In this case, additional time for contrast administration and possible observation of the patient after the examination should be taken into account.

The total time spent at the medical facility, including preparation for the examination, the procedure itself and waiting for the results, may be around 30 to 60 minutes.

*ATTENTION! The information contained in this article is for informational purposes and is not a substitute for professional medical advice. Each case should be evaluated individually by a doctor. Consult with him or her before making any health decisions.