What is a CT colonography? (Also known as CT colonoscopy, virtual colonography or virtual colonoscopy). A computed tomography colonography (CTC),…Read more
This study may not be suitable for pregnant women. The benefit versus risk should be discussed with the nuclear medicine specialist.
Women who are breastfeeding and people who are the primary or sole carer for small children may need to make special preparations after the test to stop breastfeeding for a short time and to avoid close contact with young children due to the small amount of radioactivity released for a while after the test. Patients should discuss this with their referring doctor or the nuclear medicine practice where they will have the test for details. See nuclear medicine for further information about the precautions to take with nuclear medicine studies for breastfeeding patients and those in close contact with children.
Please contact the nuclear medicine department for scanning bed weight limits.
There are no known associated risks, but the patient will be receiving a dose of ionising radiation (see radiation risk of medical imaging for adults and children). If the patient is pregnant or breast feeding, please contact the nuclear medicine department with regards to proceeding with the scan.
Ultrasound is routinely used in assessment of the thyroid gland, in particular for characterisation of thyroid nodules. Non contrast CT scan may also be used to assess retro-sternal extent or compressive effects of an enlarged thyroid gland.
Radiopharmaceuticals 123I and 131I capsules, given orally, may be used instead of Sodium Pertechnetate 99mTc however the indications for their use are different to the routine indications for use of a Sodium Pertechnetate scan.
Contact your nuclear medicine physician to discuss relative merits.
Page last modified on 26/7/2017.
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RANZCR® intends by this statement to exclude liability for any such opinions, advices or information. The content of this publication is not intended as a substitute for medical advice. It is designed to support, not replace, the relationship that exists between a patient and his/her doctor. Some of the tests and procedures included in this publication may not be available at all radiology providers.
RANZCR® recommends that any specific questions regarding any procedure be discussed with a person's family doctor or medical specialist. Whilst every effort is made to ensure the accuracy of the information contained in this publication, RANZCR®, its Board, officers and employees assume no responsibility for its content, use, or interpretation. Each person should rely on their own inquires before making decisions that touch their own interests.