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WorksheetsS A I R A M ACADEMIC LECTURE
Total questions: 15
Worksheet time: 8mins
Which of the following is the primary safety concern regarding ferromagnetic objects in the MRI scanner?
Electromagnetic interference
Heating of tissues
Projectile effect
Noise levels
What is the main cause of burnd in MRI patients?
Radio frequency ( RF) heating of metal implants
Static magnetic field interaction
Acoustic noise from the scanner
Increased body temperature from the scan
Which of the following is NOT a contraindication for an MRI exam ?
Pacemaker
Cochelear implants
Pregnancy ( first trimester)
Metal implants in the body
The strength of the MRI magnetic field is measured in ?
Gauss
Tesla
Amperes
Hertz
In an MRI environment, which of the following is true aboutQuenching event?
It causes the MRI magnet to lose its ability to produce images
IT results in the sudden loss of the magnetic field
It refers to the cooling of the patient during the procedure
It can cause tissue over heating in the body
What is the potential danger associated with MRI in patients with pacemaker?
Interference with pacemaker function
Hearing lost due to the noise
Increased blood pressure
Increased body temperature
Which of the following is a safety precaution when performing an MRI on a patient with an an implanted metal device?
Only use a low strength MRI machine
Always ensure the device is MRI compatible and properly shielded
Apply a cooling gel on the implant site during the scan
Perform the MRI without monitoring the patient
What is the primary source of noise in an MRI scanner
Acoustic noise from the MRI gradient coils
The patients movement during the scan
The strength of the magnetic field
Hitting of the body tissues
Which of the following is a potential hazard from the static magnetic field of an MRI
Disorientation aur dizziness in patients with metal implants
Accidental injury from flying ferromagnetic objects
Tissue damage from high energy radio frequency radiation
None of the above
MRI technologiist should screen patients for?
Pregnancy
Presence of metal implants or foreign objects
Claustrophobia
All of the above
Why are patients with renal failure at risk when undergoing and MRI with contrast?
They may experience allergic reactions to the MRI contrast
Contrast agents may exacerbate kidney damage ( nephrogenic systemic Fibrosis )
They may not be able to tolerate the high magnetic field
Dear body temperature Mein become too high during the procedure
Which of the following statements about MRI safety is correct?
It is safe to wear jewellery or metallic accessories during an MRI scan
MRI is completely safe for pregnant women in the first Trimester
The static magnetic field of an MRI is harmful to the body when use appropriately
Only ferromagnetic materials can be dangerous in the MRI room
Which sequence/ technique helps reduce MRI scan times and improve acquisition efficiency
Conventional full K space sampling only
Compressed sensing, simultaneous multislice and deep learning reconstruction
Slower repetition times with fewer signal average
Increasing slice thickness to reduce number of slices
What role is artificial intelligence ( AI) playing in modern MRI
Only used for Hardware control
Automatic image reconstruction, segmentation and Diagnostic support
Replacing MRI in favour of CT entirely
Minimising the need for RF coils
In head and neck MRI, which of the following is an you revolving advances sequence/ technique?
2D T1 only imaging
Isotropic 3D sequences, diffusion Tensor imaging, black bone imaging and compressed sensor methods
Monitoring only with plane radiograph
Using ultrasound instead of MRI
