MRI c Spine Definition

miklJuly 23, 2016
8 images
An MRI scan uses a powerful magnetic field and radio waves to take detailed, 3-D pictures of the body. The human body is 80 percent water, so it contains millions of hydrogen atoms. When these atoms come into contact with the MRI’s magnetic field, they all line up in the same direction. The radio waves […]

MRI c Spine Multiple Sclerosis

miklJuly 23, 2016
8 images
Magnetic resonance imaging (MRI) was first used to visualize multiple sclerosis (MS) in the upper cervical spine in the late 1980s.[1] Spinal MS is often associated with concomitant brain lesions; however, as many as 20% of patients with spinal lesions do not have intracranial plaques. Contrary to the brain, white and gray matter can both […]

MRI c Spine Axial

miklJuly 23, 2016
6 images
On this page, you will learn the basics of how to read your MRI for some of the more common causes of lumbar spine pain (low back pain or lumbago) and radicular pain (sciatica or lower extremity pain). First, I will go over the pertinent lumbar anatomical structures as visualized on both sagittal (view from […]

MRI Bright Spots on the Brain

miklJuly 23, 2016
9 images
People are often alarmed to hear a physician say there are “spots” on the magnetic resonance image (MRI) of their brain. These spots may be referred to as “unidentified bright objects” (UBO), “high signal intensity areas” (HSIA), “white matter hyperintensities,” and “nonspecific white matter changes.” White matter hyperintensities are often located next to the ventricles, […]

MRI Brainstem Anatomy

miklJuly 23, 2016
9 images
The brainstem provides the main motor and sensory innervation to the face and neck via the cranial nerves. It also provides the connection of the cerebrum, basal ganglia, diencephalon, cerebellum and spinal cord. Additionally, there are other other brainstem nuclei. The brainstem also plays an important role in the regulation of cardiac and respiratory function. […]

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 […]