Choosing between PET/CT or IV Contrast diagnostic CT with PET.
The requirement for PET/CT or IV contrast diagnostic PET/CT will depend on the clinical scenario/preference of the referring consulting and patient convenience. However, there are areas where diagnostic CT is clearly superior. These include detecting tiny pulmonary metastases; determining the relationship of tumour to anatomic structures, like vessels, is important as with lung cancer pre-surgery staging; and tumours with mixed cell types – some lesions of which may have low FDG uptake and are only manifest on the CT portion. Ordering a diagnostic CT may also be required for certain treatment protocols and will also reflect a physician’s experience and comfort level with PET imaging.
By identifying changes in the body at the cellular level, PET imaging may detect the early onset of disease before it is evident on other imaging tests such as CT or MRI.
By introducing IV Contrast Diagnostic PET/CT this offers greater convenience for the patient who undergoes two exams (IV Contrast diagnostic CT & PET) at one sitting, rather than at two different times.
Referring for PET and a diagnostic CT
If you would like a PET and a diagnostic CT, including the option of oral/IV contrast, this can also be accomplished during a single patient visit to The Molecular Imaging Centre. The PET portion is performed as above (with a non-diagnostic CT). A diagnostic quality CT of the area specified (head, neck, chest, abdomen, and/or pelvis) with IV contrast is also performed. This CT will be interpreted by a radiologist and a report provided. It is also reviewed by a Nuclear Medicine Consultant when reporting the PET scan. To obtain this type of study ask for a PET with IV Contrast Diagnostic CT (and specify CT head, neck, chest, abdomen, and/or pelvis and what type of contrast – oral/IV/none). Remember that regardless of the diagnostic CT ordered, the PET will always cover at least the top of the head through to the pelvis.
So how can you refer patients to the PET/CT Scanner?
Complete the Referral Form (download here), detailing the type of test you require. You can also call us on 020 7725 6800 if you would like us to send you a copy.
Fax to 020 7725 6868 or post to the address below
Any queries please telephone us on 020 7725 6800
Opening Times Monday – Friday 08:30 – 17:30
The Harley Street Clinic Molecular Imaging Centre,