Magnetic Resonance Imaging - Study guides, Class notes & Summaries

Magnetic Resonance Imaging (MRI) Questions and Answers 100% Pass What is the primary reason MRI is preferred for brain imaging? Superior soft tissue contrast Which property of hydrogen atoms makes them useful in MRI? Their magnetic moment and abundance in the body What happens when radiofrequency pulses are turned off in MRI? The hydrogen nuclei return to alignment, releasing energy Which sequence is best for visualizing cerebrospinal fluid (CSF)? T2-weighted imaging Why ...

Magnetic Resonance Imaging (MRI) Questions and Answers Latest Update Already Passed Why must patients remain still during an MRI scan? To prevent motion artifacts Which part of the MRI machine detects the returning radiofrequency signal? Receiver coil What is the main risk of using gadolinium-based contrast agents in patients with kidney disease? Nephrogenic systemic fibrosis Which body plane does a sagittal MRI scan produce? Side-to-side view What is the effect of inc...

Magnetic Resonance Imaging (MRI) Questions and Answers Latest Update 100% Pass What does MRI stand for? Magnetic Resonance Imaging Which type of waves does MRI use to generate images? Radio waves What is the primary element in the body that interacts with an MRI machine? Hydrogen Which strong force is used in MRI to align hydrogen nuclei? Magnetic field What is the name of the process where hydrogen nuclei return to their normal state after being excited? Relaxa...

What is MRI? Correct Answer Uses a fixed or "static" magnetic field, rapidly changing magnetic fields and radiofrequency (RF) signals to visualize: •Anatomy •Tissue Characteristics •Vascular Flow •Chemical composition of tissue --- No Radiation involved --- Basic Component Correct Answer - magnet - gradient coils - radio frequency coils - computer Magnetic fields are measured in Correct Answer Gauss (G) and Tesla (T)* Magnetic Fields Correct Answer ABSOLUTELY NO M...

True or false, Quenching is dangerous and prohibitively expensive Correct Answer True How is Data localization in MRI accomplished Correct Answer a gradient magnetic field is superimposed on a static external magnetic field. What is the primary variable in the data collection procedure during MRI Correct Answer the sequence True or false, Two electromagnetic coils are required to produce magnetic field gradients corresponding to the axis to be imaged Correct Answer False Determine...