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A 31-year-old member asked:

can a ct scan without contrast be accurate?

2 doctor answers4 doctors weighed in
Dr. Steven Chmielewski
Diagnostic Radiology 30 years experience
Depends.: For kidney stones we use no contrast, but we don't get as good a look at the solid organs. Contrast is usually helpful, but not always necessary.
Dr. Jeffrey Ramkaransingh
Interventional Radiology 20 years experience
Yes: It depends on what you are looking for. CT scans without contrast are very good at evaluating for kidney stones, evaluating lung nodules, looking at the spine and bones and looking for acute bleeding in the brain. Contrast is better when looking at the solid organs of the abdomen, looking for infections and looking for tumors. Ask your doctor.

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Similar questions

CA
A 39-year-old member asked:

Do I have to bring someone along, or can I drive after a CT scan?

1 doctor answer4 doctors weighed in
Dr. Valentin Drezaliu
Obstetrics and Gynecology 20 years experience
Drive after CT scan: If you had no medication prior ct scan it is safe to drive back home. If you had medication for anxiety, pain, you should have someone with you to drive back home.
A 33-year-old member asked:

I would like help in getting CT scan results?

1 doctor answer2 doctors weighed in
Dr. Seth Zeidman
Neurosurgery 33 years experience
How: The results should be available from the radiologist who reads the study. Interpreting the results make take the assistance of a clinician.
A 34-year-old member asked:

Is getting a second CT scan within a year too much radiation?

1 doctor answer5 doctors weighed in
Dr. Michael Thompson
Hematology and Oncology 20 years experience
Too much?: "too much" is a relative term. Basically no. If you have a medical condition, ie cancer that is being monitored by ct then the benefits outweigh the risks. If you are getting a ct for no reason then the risks (small but finite) outweigh the benefits. Any medical procedure is not a binary state. There is a continuum of risks and benefits.
AZ
A 27-year-old female asked:

Is a CT scan without contrast less accurate than one with contrast?

1 doctor answer1 doctor weighed in
Dr. Michael Gabor
Diagnostic Radiology 33 years experience
It depends: what kind of CT is being performed and for what purpose. for certain indications, adding contrast offers no significant diagnostic benefit. For other indications, contrast is essential and the diagnosis cannot be made without it. What kind of CT are you talking about, and what is your doctor looking for?
A 50-year-old member asked:

What is CT scan used for?

2 doctor answers6 doctors weighed in
Dr. James Bronk
Radiology 40 years experience
Multiple indications: CT is very widely used in diagnosis, from evaluation of the nervous system to cardiac and lung pathology to abdominal diseases and even musculoskeletal assessments.

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Last updated Jan 5, 2019

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