Doctor insights on:
Brain Ct Scan Without Contrast
Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! The image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more
Should do it: If a brain tumor is causing significant symptoms, it should surely be large enough to be detected on a cat scan. ...Read more
Ct scan dects brain aneurysms? Is it possible for a CT scan without contrast to reveal an unruptured brain aneurysm? Is the test meant to find that sort of thing?
Yes, it can: Did you go to an ER with H/A & they did a knee-jerk don't-sue-us CT scan which was normal? If you've had H/As for at least 3 years, the chances of finding a tumor on brain imaging are no greater than for someone with no history of H/A. Are your headaches of recent onset, relentless & worsening? If not, you can find something else to worry about, like the outcome of the 2016 presidential election. ...Read more
Had a fear of brain tumor for 7 months. Ct scan without contrast was clean. Would I be having severe symptoms by now if it was malignant?
Brain tumors aren't easily categorized into benign or malignant: Although the most aggressive type of brain tumor, glioblastoma, would likely be causing severe symptoms by now, there are other types of brain tumors that can be serious but not grow as quickly. The majority, however, would be associated with progressive symptoms during this time period. An MRI is the best test to evaluate potential masses in the brain. ...Read more
Would a CT scan without contrast show a brain tumor or evidence one was there? What are the chances it won't? Doc not concerned but my anxiety is :/
Some things: CT scan of brain without contrast shows basic anatomy of brain, gray white matter differentiation, ventricles, and physiologic calcifications. Ventricles enlarged/ hydrocephalus, mass effect with displacement of normal structures, some bleeding, abnormal calcifications in tumors or old subdural hematomas, fractures. CT with contrast adds enhancement of certain lesions not seen, hyper/hypo vascular. ...Read more
Johns Hopkins site:
Http://www. Hopkinsmedicine. Org/neurology_neurosurgery/specialty_areas/brain_tumor/diagnosis/how-to-diagnose-brain-tumors. Html
and here's a nice scan of a tumor as well. ...Read more
If CT scan w&wo contrast came back normal with no brain tumor found 2 years and 7 months ago what's my risk to have one now if I have new symptoms?
Last question I promise 2 years and 7 month ago I got a CT scan with and without contrast and it was clear? D I need to still worry about brain tumor
Most: 23 year old men do not need a head ct +/- contrast in the first place, and the exposure from the radiation when you do not need a scan is not worth repeating. Imaging is expensive and should only be done when necessary. You provide no information suggesting either ct or MRI is indicated. ...Read more
2 years and 8 months ago CT scan w&wo contrast ruled out a brain tumor now im worry again can a brain tumor grow that fast and cause symptoms im 27?
Is it possible for a CT scan of the head *without* contrast to show an unruptured brain aneurysm?
Can a CT scan with out contrast show if someone has a significant amount of blood in the brain from a ruptured anurysm?
Yes: A very good modality to see fresh blood is a non-contrast ct scana. ...Read more
3 MRIs in 3 mos show a growth on brain stem medulla. CT Scan with contrast 2 wks after last MRI shows no enhancement. Why is that?
No enhancement: Due to they type of tumor you have. Need more details. ...Read more
Is it possible I have a brain tumor? I've had this horrendous pain originating from a spot on my head had a CT scan done no contrast-clean
I've had 2 lung ct scans (1 this AM) w/ contrast & 1 brain ct scan within 2 years. I'm 27. Is there anything I can do to minimize radiation? Diet?
Limit testing: Only have tests needed to make treatment decisions, as recommended by your physician. ...Read more
If a head CT scan with and without contrast ruled out brain tumor can I be sure that I don't have a brain tumor?
Why do you worry?: Cat scan is adequate to demonstrate even a modest size lesion, and seems reassuring. Yet, you remain focused and perhaps doubtful. Urge you contact a counselor and explore the underlying causes of your persistent concerns. Actually brain tumors are quite uncommon. ...Read more
Would a Brain MRI W/O Contrast & a CT Scan with and W/O Contrast show a brain tumor causing symptoms? Worried that it could have been missed.
Would a Brain MRI without Contrast & a CT Scan with and without Contrast show a brain tumor causing symptoms? Worried that it could have been missed.
No symptomatic tumor: It is a pretty safe bet that MRI together with contrast CT can exclude a symptomatic tumor (mass) in the head. That does not mean all causes of headache or neurologic complaint are seen. Only your practitioner can give more advice to "put your mind at ease" and further direct your diagnostic journey. ...Read more
Can I ask my doc to change my ct scan for my head to with contrast to alleviate my severe fear of brain aneurysm?
You can certainly ask about it. Rather than specifically requesting contrast though, I'd suggest asking about the potential benefits vs risk of a contrast study as opposed to the non-contrast.
The appropriateness of contrast depends on the reason the study is being ordered. Contrast helps enhance detection of many findings but can obscure others. ...Read more
If im in the ER and they wanna check for a brain tumor by doing a CT scan. Can I request an MRI without contrast instead or is that not an option?
Yes/No: A ct scan has the advantage of being fast (and cheap from the insurance companies standpoint) and gives a good enough resolution as a screening test. You can request an MRI without contrast, however, if something is found, you need to get another MRI scan which is a longer, and more expensive, time commitment. ...Read more
Do CT scan/mri's when they check for tinnitus require contrast? Will they check all the vessels in my brain? Or is it just normal mri?
I recently had a Head and Neck CT scan. One without and one with contrast. What are the chances a brain tumor causing symptoms was missed?
Very remote: CT scan will pick up a brain tumor easily although it is not the best test for small (tiny) tumors. But then you would not have any symptoms from a small lesion. Please share information about your symptoms with us....we like to have detailed history of what is bothering you to start with. ...Read more
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