RF Shielding actually has little to do with the magnetic field generated by an MRI Scanner. The purpose of The RF Shielding installed in an MRI exam room is to prevent radio frequency interference from entering into the MRI Scanner and causing image quality degradation.
When a patient moves during an MRI scan, it can cause motion artifacts, which appear as blurring or distortion in the images. These artifacts can degrade image quality and make it challenging to interpret the results accurately. Techniques such as motion correction algorithms are sometimes employed to mitigate the impact of these artifacts.
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An artifact is any feature which appears on the image which is not present on the original object. These can be caused by things such as machine calibration, blood flow, etc.
MRI Scanners are able to image soft tissues with much more detail than other imaging options. The MRI is able to differentiate between different types of tissue such as fat, muscle, tendon, nerve, abscess, water and blood. Since most pathologies consist of soft tissues, the MRI does give a better image most of the time.
An MRI scan is obtained by using radio frequency waves (similiar to FM radio waves) to energize Hydrogen atoms in fat and water. When you add energy to the Hydrogen atoms you can create a signal that can be then turned into an image.
No. Only the spaces where the disks are. And MRI or CT scan can actually image the disk itself.
A CT Scan can image an aneurysm without a contrast injection even though it does better with a contrast agent. An MRI will require an contrast agent or an MRI/MRA.
Yes, a tampon can be seen on an MRI image, but its visibility depends on the type of materials used in the tampon. Tampons typically contain absorbent materials like cotton or rayon, which may not be easily distinguishable on MRI due to their similar signal characteristics to surrounding tissues. However, if the tampon contains any plastic components or applicators, those parts may appear more clearly on the MRI.
No, an MRI is used to image soft tissues such as ligament and muscles. These do not show up on an X-ray which looks at hard tissues such as bone.
A sensory image is an image based on more than one sensation, An MRI is an example of a sensory image- it combines colors and depth based on the neural sensations of the brain.
The magnetic resonance imaging system uses a superconducting magnet to interpretate the behavior of the particles and convert to image using a computer. The technician operates the machine.