Radiation Therapists Interview Questions
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What is the difference between a CT and an MRI?
User Submitted Interview Answers
MRI is non-ionizing and gives a great view of soft tissue. MRI scans take a long time to acquire. CT using ionizing radiation, is great for imaging bone and can be acquired very quickly.
CT gives good boney delineation while MRI provides better soft tissue definition and can show the difference between normal tissue and cancerous tissues.
CT uses x-rays to acquire images. MRI uses a strong magnet and pulsed signalling to manipulate the nucleus hydrogen atoms, quantify their resting times and produce images processed via a computer. CT is quicker and quiet. MRI is longer with good soft tissue definition. CT has good bony anatomy information.
Ct uses radiation to produce an image and is better at showing bony anatomy whereas MRI uses a magnetic field and hydrogen atoms in the patient and is better at showing soft tissue deliniation,
A CT uses radiation to create a series of CT images. The CT density can be used and allows geometric accuracy. MRI is good for soft tissue differentiation and uses magnets which interact with the tissues in the body.
CT uses radiation to produce images. MRI uses magnetism. MRI produces good soft tissue images while CT produces good bony anatomy images,
CT uses ionising radiation whereas MRI make use of magnetic fields to acquire images. CT scans show good bony anatomy while MRI scans show good soft-tissue definition.
Ct captures bony anatomy whiles MRI makes it possible to distinguish between the tissues.
Ct gives the hu numbers and mri gives the tissue weighted images.
One uses radiation the other uses magnets. different imaging.