MRI Brain Without Contrast Side Effects

miklJuly 23, 2016
10 images
The MRI machine is a large, cylindrical (tube-shaped) machine that creates a strong magnetic field around the patient. The magnetic field, along with radio waves, alters the hydrogen atoms’ natural alignment in the body. Pulses of radio waves sent from a scanner knock the nuclei in your atoms out of their normal position. As the […]

MRI Brain With Flair

miklJuly 23, 2016
8 images
Fluid attenuation inversion recovery (FLAIR) is a special inversion recovery sequence with long T1 to remove the effects of fluid from the resulting images. The T1 time of the FLAIR pulse sequence is adjusted to the relaxation time of the component that should be suppressed. For fluid suppression the inversion time (long T1) is set […]

MRI Brain With Fiducials

miklJuly 23, 2016
9 images
A specialized MRI brain with markers in place for surgical planning, usually for a tumor resection. No contrast is used for this study. For preparation instructions, please visit Brain MRI. Markers are placed at the scanner by technologists (they look like little lifesavers) assisting the surgeon in aligning the images to your head. Fiducials are […]

MRI Brain With Contrast vs MRA

miklJuly 23, 2016
8 images
An MRA, or magnetic resonance angiogram, is a type of MRI scan that uses MRI’s magnetic fields and radio waves to produce pictures of blood vessels inside the body, allowing doctors to locate problems that may cause reduced blood flow. An MRI, or magnetic resonance imaging, is the technology behind an MRA, and it is […]

MRI Brain With Contrast or Without Contrast

miklJuly 23, 2016
10 images
Magnetic resonance imaging (MRI) of the head uses a powerful magnetic field, radio waves and a computer to produce detailed pictures of the brain and other cranial structures that are clearer and more detailed than other imaging methods. This exam does not use ionizing radiation and may require an injection of a contrast material called […]

MRI Brain With Contrast Multiple Sclerosis

miklJuly 23, 2016
9 images
Multiple sclerosis (MS) is a disease in which the body’s immune system attacks the protective covering surrounding the nerves of the central nervous system. Magnetic resonance imaging (MRI) can reveal telltale scars (lesions) on the brain or spinal cord. There’s no single definitive test for MS. Diagnosis is based on symptoms, clinical evaluation, and a […]

MRI Brain White Spots Cause

miklJuly 23, 2016
7 images
A lesion is an area of tissue that has been damaged through injury or disease. So a brain lesion is an area of injury or disease within the brain. While the definition sounds simple, understanding brain lesions can be complicated. That’s because there are many types of brain lesions. They can range from small to […]

MRI Brain White Matter Abnormalities

miklJuly 23, 2016
9 images
Background Changes in the cerebral hemispheric white matter are detected with increasing frequency by CT and MRI among persons older than 60 years. The pathogenesis, clinical significance, and morphological substrate of these changes are incompletely understood. Patients who have such neuroimaging abnormalities are sometimes diagnosed with “Binswanger’s disease,” an eponym that has generated much confusion […]

MRI Brain White Contrast

miklJuly 23, 2016
10 images
Structural MRI provides information to qualitatively and quantitatively describe the shape, size, and integrity of gray and white matter structures in the brain. Broadly speaking, MRI signal varies across tissue types because gray matter contains more cell bodies (e.g., neurons and glial cells) than white matter, which is primarily composed of long-range nerve fibers (myelinated […]

MRI Brain White and Grey Matter

miklJuly 23, 2016
10 images
At the level of the cerebral hemisphere, gray matter is mainly distributed in the periphery (cortex) while the white matter is deep. However, there is gray matter in depth of the brain called basal ganglia. In the brainstem, gray matter is usually found in the depth while the white matter is superficial. In the spinal […]