Can we see the brain AVM on a non-contrast MRI or CT scan?
Nota Bene: Given the manner in which this question is posed, I suspect that the OP is asking whether the finding of an AVM would be made incidentally by one of these imaging techniques. Thus, each of my responses is couched in terms of a relative probability!On an unenhanced CT scan of the brain employing a routine protocol, doubtful unless the AVM is large.On a routine (protocol) unenhanced MRI of the brain, doubtful unless the AVM is medium-or-so in size.On an unenhanced MRA of the brain using only a 3D TOF GRE pulse sequence, there's a decent chance it would be detected.
How much do MRI scans cost in India?
MRI Scan Cost in India varies based on various parameters - screening MRI, Normal MRI, MRI with contrast, Open MRI, 1.5T MRI and 3 Tesla MRI. The cost starts at Rs 1200 and can go to up to Rs 12,000. In all the metros of India, you can book your MRI at the lowest cost through LabsAdvisor.com. Call 09811166231 or check link MRI Scan Cost in IndiaIf you go to a laboratory or a hospital directly, they will charge you a very high price. you may want to look at diagnostic platforms that get you upto 60% off at the same labs. The discount is given because doctor referral fee (which is rampant for MRIs ) is not paid when you book through a portal. Check for key MRI Tests hereMRI Scan In DelhiMRI Scan in BangaloreMRI Scan in MumbaiMRI Scan in ChennaiMRI Scan in HyderabadMRI Scan in Gurgaon
Can an MRI without a contrast and a CT scan miss brain aneurysm?
IANADI don’t know any stats on missed diagnoses, but it’s probably not unheard of. Some aneurysms can be too small for the resolution of CT/MRI, and sometimes the angle at which the image volume is rendered can be *just wrong* for anything to show up. And sometimes the doctors just plain miss it.There’s a lot going on in every CT/MRI. The smaller the aneurysm is, the harder it is to distinguish from any plain old image artifact. We’re really good at spotting the big stuff - an aneurysm a handful of millimeters (or even cm! yikes) across, or one that has popped and is now a big bleeding stroke hemorrhage, is usually pretty unmistakable. But the little stuff can be just about anything - a blip, CANCER (the joke goes that you can find a dozen “looks like cancer” growths in just about any adult’s full-body scan, that actually AREN’T cancer), an aneurysm, or just some wierd quirk of that person’s anatomy.
If you have brain anerysms will they see that in a mri of the brain ? becuase thats just a picture?
anerysms shows up on a MRI it looks like a little blister also if it has bled they can see that too wife had 2 i have seen the pic's
Had an MRI but didn't end up needing the contrast?
I had a brain tumor back in 2008. It was successfully removed. Since 2008 up till now, I have had 16 MRI's, and all of them have had contrast. An MRI with contrast is the best way to see a brain tumor. The brain tumor absorbs the contrast and therefore can be seen better. I do not know why the doctor didn't order an MRI with contrast unless maybe you are allergic to the dye, or if you have kidney problems. If there was a brain tumor found, you would probably have been admitted to the hospital right then. I was admitted the same day I had my MRI and the tumor was found. I think you are in the clear. Just wait patiently (I know that is easy to say but not easy to do). I wish you luck :)
Are MRA (magnetic resonance angiogram) scans for head and neck on a 3T MRI machine clear enough not to need contrast (for checking out visual disorders and dizziness symptoms on patient), or are they fairly useless without contrast?
The answer to the first part of your question, plain and simple, is that the need for IV contrast depends on what one is looking for.Most venous studies do not require it. If one is studying the flow dynamics of an AVM (arteriovenous malformation), one needs it. If one is surveying the circle of Willis, then generally the study is done without IV contrast.The answer to the last part of your question is no.
For how long is a brain MRI valid?
If you look closely at your brain MRI, somewhere on your brain there will be stamped an expiration date. At least, that is what I have heard. I have not yet seen it myself!To be serious, it all depends on the type of pathology, if any. Some diseases advance quickly, some diseases advance slowly, some diseases stabilize, and some diseases spontaneously resolve.If your brain MRI is normal, there is no reason to get another one unless some symptoms or signs appear.
What kind of things can an MRI detect about the brain that a CT cannot?
MR Angiography of the brain can identify some flow phenomena that CT Angiography cannot do or is inferior. For example, without even using IV contrast, MR Venography can be used to demonstrate flow direction and maximum flow velocity and venous thrombosis. CT cannot do the first two and can only begin to approach MRV in the latter application.Using an MRI pulse sequence called TRICKS (proprietary name by General Electric,) in conjunction with an IV contrast infusion can yield arteriographic images that are resolved over time! Thus, it is a study of flow dynamics. To my knowledge, CTA still cannot do this.There are MRI Pulse Sequences (= PSDs) that are exquisitely sensitive to magnetic susceptibility artifacts, such as hemosiderin deposits present in chronic hemorrhage, which cannot be detected using CT.There exist other such examples, but those above should give you some idea.