Articles Tagged With: MRI
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MRI for the Evaluation of Inflammatory Myopathy
Magnetic resonance imaging (MRI) of large muscles is an important adjunctive diagnostic test for inflammatory myopathies, in conjunction with serum muscle enzymes and electrophysiology. MRI also can identify the highest-yielding section of muscle to target a muscle biopsy.
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Acute Vertigo Caused by Herpes Zoster Oticus
Herpes zoster oticus (HZO) and vestibular neuritis (VN) can be difficult to distinguish, but treatments may be different. Magnetic resonance imaging may help by showing inflammatory lesions in the vestibular nuclei or the proximal portions of the eighth nerves in HZO, but not VN.
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Acute Vertigo Caused by Herpes Zoster Oticus
Herpes zoster oticus (HZO) and vestibular neuritis (VN) can be difficult to distinguish, but treatments may be different. Magnetic resonance imaging may help by showing inflammatory lesions in the vestibular nuclei or the proximal portions of the eighth nerves in HZO, but not VN.
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Tarlov Cysts of the Lumbosacral Spine
Tarlov cysts (root sleeve cysts) are common incidental findings on magnetic resonance imaging of the lumbosacral spine. However, they rarely are correlated with electrophysiological findings or clinical symptoms. Undertake extreme care and caution before recommending surgical intervention for these common imaging abnormalities.
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Involvement of the Peripheral Nervous System in Neurolymphomatosis
Lymphoma that presents with peripheral neuropathy is a challenging diagnosis. Diagnosis and treatment often are delayed, but they can be facilitated by early consideration and imaging with fluorodeoxyglucose-positron emission tomography. Early diagnosis and hematologic treatment may be effective.
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MRI Safety Requires Good Policies, Signage, and Education
MRIs provide valuable information that can be vital to patient care, but they also are powerful machines that can injure or kill people when proper precautions are not taken. The potential liability from such accidents is significant.
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Magnetic Resonance Imaging Evaluation of Perivascular Space Abnormalities in Neuromyelitis Optica
Perivascular space (PVS) abnormalities were demonstrated in two cohorts of patients with neuromyelitis optica spectrum disorder (NMOSD) as compared to healthy controls. Magnetic resonance imaging provided visualization of PVS enlargement, and quantification of reduced flow in NMOSD patients, both of which were found to be associated with disease outcomes.
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The Value of Stress Testing in Patients with Known Coronary Artery Disease
A comparison of adenosine stress single-photon emission CT, PET, and MRI in stable patients with known coronary artery disease (CAD) showed PET to be more sensitive for detecting invasive fractional flow reserve-identified ischemic lesions. However, the sensitivity was disappointing. Patients with known CAD and new symptoms should be referred directly to invasive coronary angiography.
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The Value of Stress Testing in Patients with Known Coronary Artery Disease
A comparison of adenosine stress singe photon emission CT, PET, and MRI in stable patients with known coronary artery disease (CAD) showed PET to be more sensitive for detecting invasive fractional flow reserve-identified ischemic lesions. However, the sensitivity was disappointing; thus, patients with known CAD and new symptoms should be referred directly to invasive coronary angiography.
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Post-Surgical Seizure Outcomes in MRI-Positive Focal Cortical Dysplasia
This comprehensive meta-analysis of the surgical outcomes for drug-resistant epilepsy caused by focal cortical dysplasia demonstrated an excellent result with post-surgical freedom from seizures in 70% of patients followed for more than 24 months.