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CT Scan
CT angio extra part is a catalogue entry for extending a CT angiography study to cover an additional body region beyond the first one, in the same sitting. It is booked alongside CT angio one part, when your doctor needs blood vessels examined in more than one area, for example one region plus a connected one, rather than as a stand-alone scan on its own. The added region is imaged using the same contrast injection and scanning session as the first, avoiding a separate visit and a second dose of contrast dye. Which additional area is covered depends entirely on what your doctor specifies for your case.
This scan checks blood vessels in the extra region your doctor adds to the study, using the same contrast injection as the first part. It looks for narrowing, blockage, aneurysm, or other vessel changes in that additional area. Your report covers both regions together.
When a single body region is not enough to answer your doctor's question, CT angio extra part extends the same CT angiography study to cover a second region. This is not a separate scan booked on its own; it is an addition to CT angio one part, done in the same session.
- Your symptoms point to more than one possible source - Your doctor needs to trace a blood vessel across two connected regions, for example an artery running from the abdomen into a limb - Surgical planning requires seeing the full extent of a vessel or its branches
Both regions are scanned using the same contrast injection and the same visit, so you generally do not need a second injection or a return trip. The radiologist reviews both sets of images together.
Because this is still a contrast CT scan, tell your doctor about any past reaction to contrast dye, kidney problems, or thyroid conditions beforehand. Scanning a larger area means more radiation exposure than a single region alone, so tell the centre if there is any chance of pregnancy.
No. The extra region is imaged in the same session as CT angio one part, using the same contrast injection.
Usually not. The same contrast injection used for the first region generally covers the additional area too. Ask the centre if your case is different.
Some conditions involve blood vessels that run through or affect more than one body region. Your doctor adds the extra part when a single region will not answer the clinical question.
Covering more of the body generally means more radiation exposure than a single region alone. Your doctor orders it only when the added information is needed.
This page is general information about the test, not medical advice. Your own report's reference ranges apply — please discuss your results with your doctor.
That depends on your doctor's referral and your specific condition. Check your prescription or ask the centre if you are unsure.
Tell your doctor about any kidney problems before the scan, since the contrast dye is processed by the kidneys. They may adjust the approach.
Preparation needs can vary. Ask your doctor or the centre for instructions specific to your appointment.