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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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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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How important is the experience of the radiologist to diagnose a tendinopathy when reading an MRI?

I read on {1}: Preoperative ultrasound examination of the shoulder permits a reliable diagnosis of complete rotator cuff tears and calcium deposits (calcific tendinitis). The method is less ...
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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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Reading radiology reports: What do two numbers separated by a slash mean?

The following is an excerpt from the "findings" section of an MRI radiology report. What do the instances of two numbers separated by a slash mean? There is a lesion within the spinal canal at T2-3 ...
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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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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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602 views

Dangers of having MRI, CT-scan, & X-ray within a seven day period?

I had a MRI last week for my spine. I got a call today that I'm having a CT-scan tomorrow for my abdomen (unrelated issue). The day after tomorrow, I'm having X-rays done on my teeth at the dentist ...
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133 views

What to do when an earthquake hits while inside a MRI?

As mentioned earlier, I had a MRI today... I wasn't in the waiting room for long so I didn't have a chance to read the bright yellow folder labeled "Earthquake Guide during a MRI." But as I walked ...
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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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9k views

What is a T2 hyperintense focus in the subcortical white matter?

What is a T2 hyperintense focus? What does it mean, in English, for there to be a T2 hyperintense focus in the subcortical white matter of the right middle frontal gyrus?
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What can you observe from MRI noises?

While in an MRI you hear a lot of different noises. The pitch changes, as does the pattern and rhythm. Sometimes there's one long noise, sometimes a beep-beep-beep then a pause and the same set of ...
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How to request copies of CT-Scans, MRI, X-rays & ultrasound/endoscopic imagery from Dr.'s/Surgeons for personal records? Possible?

Because of the many congenital-bone-fusions (due to Klippel-Feil-Syndrome) throughout my life, doctors have performed many, many medical-imaging tests (CT-Scans, MRIs, X-Rays, Ultrasounds, Endoscopies,...
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187 views

Do all neurodegenerative diseases show up on an MRI scan?

Do all neurodegenerative diseases such as Parkinson's, Alzheimer's, etc. show up on an MRI scan?
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130 views

Is there a disease that involves progressive loss of feeling, a tremor, and muscle twitches? [closed]

I have seen multiple doctors, including a neurologist, who are bewildered by my symptoms. Upon altering the dose of lamotrigine from 400 mg to 375 mg, and then back up to 400 mg (split into two ...
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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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656 views

what does this abnormality (arachnoid cyst) mean in a brain MRI?

In a Brain MRI (axial T1, T2, sagittal T1, axial T1 and FLAIR images) is written: CSF signal intensity lesion with 40x24x38mm diameter is seen in the anterior portion of left middle cranial fossa in ...
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Number of MRI scanners in the world today?

How many MRI scanners are there today in the whole world? My own search only revealed numbers in certain countries but no overall count.
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47 views

What criteria should I pay attention to when choosing a place to perform an MRI?

What criteria should I pay attention to when choosing a place to perform an MRI? The MRI is done to diagnose the source of pain in an articulation (e.g., elbow tendinopathy). One criterion is the ...
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115 views

MR scanner versus MRI scanner

To designate a device that performs magnetic resonance imaging (MRI), is the proper term MR scanner or MRI scanner?
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121 views

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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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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How can an MRI influence the treatment in case of an elbow tendinopathy?

I wonder what findings in an MRI may influence the treatment in case of an elbow tendinopathy. I have noticed that a fair amount of physicians (at least in the United States and in France) are ...
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Do I need to communicate with my doctor if I don't want to take prescribed MRI? [closed]

I got a prescribed brain MRI today from my doctor. Although I agreed to schedule the MRI next week, I find I am not ready to do that after I come home. I am very busy recently and my symptom is not ...
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MRI scans for diagnosing Crohn's disease?

How effective/accurate are MRI scans of the small intestine for diagnosing Crohn's disease?
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124 views

Pacemaker and MRI

Is it safe for patients with pacemakers to have MRI? Although earlier it used to be said that patients with pacemakers should not have MRI, but apparently some recent data says it is not that ...
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Can MRI scans be dangerous for one's health?

Can MRIs have any deleterious effect on one's health? Or would it be safe to have say 5 MRIs per year?