Questions tagged [mri]

Magnetic resonance imaging (MRI) is an imaging technology that employs various techniques (most notably magnetic fields) to capture the anatomy of a body.

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Are dehydration headaches visible on an MRI scan?

This article states following about dehydration headaches: Our brains are 80% water. When you become dehydrated your brain tissue loses water causing your brain to shrink and pull away from the skull....
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Automatic Quality Control of MRI

Is there any standard process to assess the quality of MRI images? The goal is to automatically detect really poor quality data (and then manually confirm the defects). I found some studies about ...
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48 views

DICOM MRI images resolution

I've received a CD with the results of my MRI. The images seem very grainy and the maximum resolution of the images is around 320x320px or 512x512px. Is this typical for these kind of images? It's ...
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Does the number of teslas matter when evaluating a tendinopathy with an MRI scanner?

The number of teslas in MRI scanners vary between 0.2 and 7 teslas, and sometimes even up to 10.5 Teslas (Siemens MAGNETOM 10.5T) and 11.7 teslas (Siemens MAGNETOM 11.7T). Does the number of teslas ...
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Why aren't fixed retainers (metal wires) behind front row of teeth affected by the MRI's? Isn't it magnetic?

I've had plenty of MRI's in my life, and I know the drill: take off the glasses, bra with a metal clasp, hair-tie with a metal band, all metal jewelry, etc. It makes sense. You don't want to put ...
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Cerebellar tonsil herniation measurement level?

In my MRI scan result the cerebellar tonsil detected had a measurement of 0.50 mm through the foremen magnum. Is this condition considered normal for a tall person or is it considered the beginning of ...
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53 views

If EPR has better resolving power than NMR, why don't most MRI machines use EPR instead of NMR?

Most MRI machines use NMR imaging instead of EPR imaging even if EPR could provide a better image with more information. What could be the reason of this preference of technique?
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Looking for MRI file repository for Finite Element Modeling of ACL

Does anyone know of any online/open access MRI image collections? I am looking for 3D geometry for an ACL to mesh and model for a Finite Element Modeling course, and I'm having trouble locating source ...
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24 views

Is there an MRI proof of regenerated human intervertebral disc in the spine?

I have read lots of research reports, surveyed Regenexx, Mesoblast, even seen MRI proof of disc regeneration in animals. However I have yet to see a study where over 20 people benefited (Regenexx does ...
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114 views

Can arthrogram detect shoulder anomalies that MRI can not?

I went to an orthopedic hospital for a pain in my left shoulder since 6 months. They first did x-ray, and the report was: X-ray left shoulder shows reduction in subacromial space and subacromial ...
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Can thickened maxillary and ethmoidal sinuses cause headaches?

An 18 year old patient has had mild and constant daily headaches for two months. The headaches were most painful in the eyes and forehead area. His MRI was clean, apart from moderately thickened ...
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Altered signal intensity lesion in frontal horn of right lateral ventricle in subependymal region without post contrast enhancement

There is evidence of approximately 9*8 mm sized altered signal intensity lesion is noted in frontal horn of right lateral ventricle in subependymal region. Lesion appears hypointense on T1W, ...