What MRI Cannot detect?
Standard MRI can't see fluid that is moving, such as blood in an artery, and this creates "flow voids" that appear as black holes on the image. Contrast dye (gadolinium) injected into the bloodstream helps the computer "see" the arteries and veins.
Can a MRI miss something?
A false negative diagnosis made off an MRI scan could lead the neurologist and patient down an incorrect path and delay an accurate diagnosis, or potentially miss it entirely. While MRI is not the only piece in the puzzle for MS diagnosis, it plays a significant role.
Does MRI show all problems?
Possible findings. It is possible that an MRI may show that everything is completely normal; however, there are several things that could be seen on an MRI and this will vary depending on where in the body the scan is being done. An MRI is very good at showing up problems with soft tissues such as muscles and ligaments …
What are the limitations of MRI?
Disadvantages of MRI
- Claustrophobia and sometimes difficulty fitting within the MRI scanner because it is a small, enclosed space.
- The effects of the magnetic field on metal devices implanted in the body.
- Reactions to the contrast agent.
What if MRI shows nothing but still in pain?
The bottom line is that not all pain is able to be detected on an x-ray or MRI. That does not mean that there is nothing there that needs to be treated or diagnosed. In fact, it means that it is possibly a precursor to something going really wrong and then eventually needing surgery because it eventually winds up torn.
Can I still have MS if my MRI is normal?
MS can be present even with a normal MRI and spinal fluid test although it's uncommon to have a completely normal MRI. Sometimes the MRI of the brain may be normal, but the MRI of the spinal cord may be abnormal and consistent with MS, so this also needs to be considered.
Will an MRI show nerve damage?
An MRI may be able help identify structural lesions that may be pressing against the nerve so the problem can be corrected before permanent nerve damage occurs. Nerve damage can usually be diagnosed based on a neurological examination and can be correlated by MRI scan findings.
What are two major disadvantages of MRI scan?
Drawbacks of MRI scans include their much higher cost, and patient discomfort with the procedure. The MRI scanner subjects the patient to such powerful electromagnets that the scan room must be shielded.