Doctor insights on:
Cat Scan V Mri
Contrast difference: Ct uses a combination of xrays shot from multiple directions to look at differences in tissue density. Mri uses strong magnetic fields instead of xrays to differentiate tissues and gives much better contrast than ct. Ct is typically used in the acute setting to see if there is blood or major abnormalities. Mri is a more specific exam to differentiate abnormalities such as stroke or tumor. ...Read more
Magnetic resonance imaging named for the effects of the strong magnetic field upon the atomic and molecular phase or spin and the image created when that magnetic field is altered and the excited particle changes gibing off a signal that is recorded and interpreted by a complex computer algorithm, ...Read more
MRI vs. CT: A ct (or cat) scan uses xrays and special computers to image the body. An MRI uses a combination of strong and weak magnets, radiofrequency coils and special computers to create images. There are certain body parts and disease processes that are better visualized with ct vs. Mri. Your doctor and/or the radiologist decide which test to perform based on many factors. ...Read moreSee 1 more doctor answer
Different technology: Cat scan uses xrays and computerized technology to produce cross sectional images of an area inside the body also called ct scan mri imaging is a test that uses use a magnetic field and pulses of radiowave energy to make pictures of organs and structures inside the body.Mri may show problems that can not be seen with xrays, cat scan, ultrasound imaging both provide digital imaging that can be saved. ...Read moreSee 1 more doctor answer
MRI/CT: A CT scan uses x-ray radiation to generate an image. An MRI uses magnetic fields "tuned" to the frequency of protons in the body. Since each scan essentially measures a different property of tissues in the body, they are complementary tests. That is why if one doesn't provide a definitive answer, often the other will be ordered. ...Read moreSee 1 more doctor answer
MRI/CT: A CT scan uses x-ray radiation to generate an image. An MRI uses magnetic fields "tuned" to the frequency of protons in the body. Since each scan essentially measures a different property of tissues in the body, they are complementary tests. That is why if one doesn't provide a definitive answer, often the other will be ordered. ...Read more
Physics: The physical phenomena on which these imaging techniques are built are very different, each is best suited for different purposes. Cat scans are sophisticated x ray, they rely on the degree of absorption of gamma rays (bones, ca, other metals will contrast most). Mri is better for softer tissue imaging because it depends more on the behavior of hydrogen atoms and h2o in the strong magnetic field. ...Read more
What is the difference in diagnostics between mri, cat scan and colonoscopy? Which one is best for identifying problems?
Big differences: Each of the tests you mentioned (mri, ct, colonoscopy) are used to diagnose different things. Therefore, depending on the problem you are trying to figure out, one test will be better than another. For example, colonoscopy is great for picking up colon polyps, but a regular ct would probably miss them. However, a ct would be great for appendicitis, and a colonoscopy would not be. ...Read more
I have to go for a eus test tommorow i was just courois if the eus test would pick up something that cat scan or MRI would miss?
Yes: The endoscopic ultrasound is capable of visualizing small lesions which might not be apparent on ct or mri. This is because the probe is brought right next to the area of interest and higher frequency probes can be used which provide higher resolution than can be obtained with trans-abdominal scanning. ...Read more
Would a MRI or cat scan show if i'm having a nerve problem going on in the inside of my head or would it show if there was something dangous?
Not necessarily: Mri and cat scans show anatomical brain changes only, not functional ones. If a dementia is far enough advanced to change brain structures, it would "show up" on these scans. However, there may be a long decline in brain function before that point is reached. There are functional scans which might detect changes before anatomic anomalies can be seen. A normal MRI does not "rule out" dementia. ...Read moreSee 1 more doctor answer
Are mris or cat scans better for migraines? I have been having migraines for some time now and want to get it looked into, but i was wondering whether an MRI or a cat scan is better for that. Or is there an even better test to diagnose what is causing he
Use can vary: Most pts who suffer migraine and have normal neurological exams do not need MRI or cat, but of the two, the MRI is far better regarding brain details and resolution, and may show a small vascular malformation that the cat could miss. Sometimes, headaches are due to problems with venous sinuses and MRI also better. If looking for aneurysm, mra or ct angio approaches are best. ...Read moreSee 1 more doctor answer
No: Actually neither MRI or ct of the stomach are particularly sensitive, but it depends on what the problem is. If you are having digestive problems, you need a upper GI series. If you are having severe pain or bleeding you may need an endoscopy. Consult with your physician to determine the proper course of action. ...Read moreSee 1 more doctor answer
If I feel a discomfort around my shoulder blade and chest area, does it make to sense to get a CAT scan or MRI for inspection?
Is venous pulse serious? Also, what are the treatments? I just found out I have it on thursday and now have to go get a MRI and cat scan done.
Venous pulse?: I don't understand this term. Please clarify. ...Read more
Having an MRI done in oct.2012 & a cat scan done n dec2012 for pains n headaches n my head can anything serous change both test where normal...?
No: Headache in young people are usually benign esp. After having 2 normal head imaging studies. They are usually from migraine, tension or cluster headache. (google online for more info) other possible causes of headaches- stress, sleep deprivation, too much caffeinated drinks, hypertension, use of recreational drugs, concussion, etc. Headache usually is recurrent. Go see your dr. For reasssurance. ...Read more
Do you think I should get an MRI or cat scan imaging to see what is causing my migraine headaches?
Not necessarily: Approximately, 98% of brain imaging in migraine shows no structural risk factors causing the headaches, and in most cases, it is a waste of money and resources. If you have some clinical finding on a neurological exam suggesting intracranial problems, then the films are appropriate. Would see a neurologist and get this managed. Should turn out very well. ...Read moreSee 4 more doctor answers
Whats the difference between an MRI and a cat scan? More specifically-why would an ENT order one or the other?
Imaging tests: Depends on your condition/symptoms. Ct uses radiation, like multiple x-rays. Mri uses magnets, and is very useful in characterizing soft tissue differences such as in the brain or joints. Ct is better for looking at the bones in and around ear (temporal bones). Mri better for inner ear, nerve roots, etc. Ct also best for sinuses, and is typically used with contrast to evaluate the neck. ...Read moreSee 1 more doctor answer
Before I adopt a child is there a way to test a 1 or 2 year old for ADHD like with a cat scan, MRI or any other way?
My head ach is as if my hair is being pulled out. I have had cat scan inconclusive result I have got to have a MRI scan why is this ?
If i ordered a cat scan of my brain but now wanna mri, how can I change it? Could i call the nurse and change it or have to go to another appointment?
Depends: The most important question is why are you having the ct of the head. If it is being done because of concerns about intracranial bleeding then that is the most appropriate test. If it is being done as a screen then you are unlikely to get your provider to change it due to cost and medical necessity. Good luck and well wishes. ...Read more
I had this off & on for months, I get this numbness on my right side temple and right side face. I had a cat scan & nothing wrong, should I get a mri?
Might help.: MRI's can find things a CT scan can't. So it would not be a bad idea. If you have not yet seen a neurologist, do so. Be sure you have copies of your medical records and any imaging and lab studies you have had done. The more information any specialist has about your previous history and workups the better job he/she will be able to do. ...Read more
What are the chances of false negative mris and cat scans? What are the odds that an MRI and a cat scan would both show no cancer when there really is cancer present? What about the opposite, where they would both should cancer when there really is none?
No test is 100%: The sensitivity of MRI and ct scans depends partly on the type of cancer and the location in the body. In general, they can find tumors that are a few millimeters in size which can be 10's of millions of cancer cells. If all scans are negative a patient may be considered in remission, but with cancer it is really only the "test of time" that ensures no microscopic cells are left. ...Read moreSee 1 more doctor answer
Which test- cat scan or mri- is best at looking at sinuses? Had severe sinus inflammation show up on both, but which test has the most detail?
I'm feeling alil dizzy & alil bit pains n my head i'm alil worried if this may b something serous? I've had a cat scan 2 months ago & a MRI n oct/2012
I have a fusion at l4-l5 with instramentation. An MRI in 2010 confirmed i had a bulging disc at s1 where I have pain. A new MRI & cat scan was ordere?
Consult your Spine: Surgeon. It is a common to have increased stress at the spinal segment above and below a fusion, with resultant acceleration of degeneration of these segments. However because you see these on xray/mri doesn't mean it is causing any symptoms. A well-trained spine specialist in your area will help you identify the pain generator, which might have nothing to do with the bulging disc you described. ...Read more
Do you have one?: You know, it’s remarkable how many young people post questions here about CT and MRI scans and brain tumors with never an explanation of why they’re interested. I wonder why they’re all so curious. They must be worried about SOMETHING. It depends on the type, size and location of the tumor, and whether the scan is properly configured to screen for tumors. ...Read moreSee 1 more doctor answer
Other than cat scan, eeg, ekg, MRI and neuro exam, what other tests should follow a TIA with no residue?
Cat scan showed 2 mm mass beside aorta.Gen. Doc wants pet/mri/other tests & other specialist appts set up. What ?S should I be asking?
2 mm, really?: If the mass is really 2 mm, it is too small for pet. If it is 2 cm, then pet may be helpful. ?S to ask - what organ is it originating from - if the aorta, consider a consult with a cardiologist. ? - was it seen on any older scans - if, in retrospect, it was there 2 years ago and unchanged, then it is probably benign. Why was ct done in the first place? ...Read moreSee 2 more doctor answers
I have has a Mri.And the needle test Cat scan.And all they come up with in a bulged hernia.Im on so much meds. And my leg KILL me 24-7..No meds help?
Consult a: Neurologist and Neurosurgeon. Based on the limited information available here, you need to have a specialist guide you through the options for treatment of your pain up and including the point at which you may need surgery. Depending on the severity of the structural abnormality, you may benefit from rest, NSAIDS, physical therapy, or chiropractic care. Steroid injections can be helpful in the proper situation. Check out this very informative site for detailed discussion. http://orthoinfo.aaos.org/topic.cfm?topic=a00534 ...Read moreSee 1 more doctor answer
Im 18 and have a lot of weird symptons/major anxiety, and i was wondering if a cat scan/mri done 3/4 years ago and a neuro test can rule out parkinson?
Seek help: Things change over the space of three to four years. You are a bit young for parkinson's.Ibelieve you can profit from a visit to a psychiatrist. ...Read more
I Have concerns about a cat scan that showed a spot on my liver in march 2017 and then it was bigger in sept 2017 1.6-2.6cm
i was supposed to get mri of it but i did not due to fear of MRI now im worried ive missed something big ..
There is nothing to be afraid of an MRI. MRI is not the only imaging method that could be used. Ultrasound examination may help. Even repeat CT may be useful. Do see your doctor for a consultation.
Wish you good health! - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex. ...Read more
How to alleviate "Thigh" and "Leg" pain that feels nerve related. I've had MRI, CAT Scan and saw a neurologist, all to no avail.
There are many choic: Depending on your doctor's recommendations, you could be treated with one or more of the several available Pain medications. Tylenol(Paracetamol) is the easiest and safest medication. Other medicines include Gabapentin or Amitriptyline. try them one at a time and see what works best for you. ...Read more
Before I adopt a child, is there a way to test a 2 year old for ADHD or other brain problems with a cat scan, mri, or any other way?
Probably not: Age 2 is far too young to be able to test for many of the disorders of concern to you, and scans are not going to help. Infant psychologists can estimate overall intelligence and functioning at this age, but that may be affected by the child's circumstances before adoption. They can pick up current problems but are not apt to be great at predicting future ones such as adhd. ...Read moreSee 3 more doctor answers
Had a cat scan and MRI just stuff from old stroke but headaches are still coming what could be the problem. Doctor says headaches might be migrains ?
Blood tests ultrasounds and a cat scan a 2 yrsago doctor won't give me a MRI for my daily minor headaches what do I do? Is dr right no need to worry?
Enough tests: The cat scan and your evaluation should be enough. An MRI is unlikely to add any value. If you continue to have headaches, ask for a referral to a neurologist who may be able to help you bring the headaches under control. Another consideration is to consider the amount of stress you are under. A thorough assessment of head and neck structures may also undercover the cause of your headaches. ...Read more
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