Magnetic resonance imaging (MRI)fully solved 2023

Magnetic resonance imaging (MRI)fully solved 2023what is magnetic resonance imaging - correct answer noninvasive diagnostic test uses magnetic field and radio waves creates cross-sectional image what happens to the part of the body being imaged during an MRI - correct answer subjected to intense magnetic field and simultaneous pulses of energy in form of radiowaves what determines the rate at which the radio waves are absorbed and release radiofrequency energy? - correct answer chemical composition of tissues how are images recieved during an MRI - correct answer emerging radio waves are detected on receiving coils signal strengths converted by complex computer algorithms into image of particular section of the body the brightness and darkness of the CT image depends on what - correct answer proton density chemical composition of tissue how can minor chemical differences between similar tissues be shown as differences in image intensity - correct answer use radio frequencies with different pulse sequences MRI imaging is extremely sensitive, this means it can differentiate between what differences in the brain? - correct answer Between gray and white matter How are MRI images are similar to CT's - correct answer Images are cross sections or"slices" Advantages of MRI over CT - correct answer No ionizing radiation Better images of brain and spine Sagittal and transverse images Disadvantages of MRI over CT - correct answer CT produces better images of bone and requires less time pet examination than MRI