Brain Imaging of Communication Functions Quiz

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What is the main advantage of MRI over CT?

It is quicker

It provides higher resolution images

It does not involve radiation (correct)

It is cheaper

Which type of MRI uses Blood oxygen level dependent (BOLD) contrast?

Functional MRI (fMRI) (correct)

T2-Weighted MRI

T1-Weighted MRI

FLAIR MRI

What type of MRI requires sedation for cases involving movements, such as children?

T1-Weighted MRI

DWI MRI

T2-Weighted MRI (correct)

Functional MRI (fMRI)

Which imaging method is not suitable for individuals with metal implants like a pacemaker?

T1-Weighted MRI Signup and view all the answers

What imaging method uses strong magnetic and radio waves to interact with hydrogen atoms in body tissues?

Diffusion weighted MRI (dMRI) Signup and view all the answers

Why is MRI considered safer than CT for pregnant women and children?

It does not involve radiation Signup and view all the answers

Which method is used to examine the arteries and veins by looking for blockages and vascular problems?

Cerebral Angiography Signup and view all the answers

What is used to visualize blood vessels without the need for a catheter in the current procedure?

Computed Tomography (CT) Signup and view all the answers

Which method is commonly used with CT and MRI to visualize blood vessels intravenously?

Cerebral Angiography Signup and view all the answers

What does the contrast agent in cerebral angiography help visualize?

Blood vessels Signup and view all the answers

What is a limitation of the previous procedure of cerebral angiography involving a catheter?

Damage to blood vessels from the catheter Signup and view all the answers

What is an advantage of the current procedure of cerebral angiography that eliminates the need for a catheter?

Avoidance of blood vessel damage from catheter Signup and view all the answers

What is one of the advantages of using Magnetoencephalography (MEG)?

Direct measurement of brain function Signup and view all the answers

Which method involves inducing temporary paralysis on one side of the brain to test language lateralization?

WADA test Signup and view all the answers

What is a disadvantage of using Magnetoencephalography (MEG)?

Poor spatial resolution Signup and view all the answers

Which method involves using small electrical pulses to interfere with cortical activity during brain surgeries?

Electrical stimulation mapping Signup and view all the answers

What is the primary purpose of the WADA test?

Test language and memory measures Signup and view all the answers

Why is Electrical Stimulation Mapping considered an invasive method?

It interferes with cortical activity during surgeries Signup and view all the answers

What does CT stand for?

Computed Tomography Signup and view all the answers

What is an advantage of CT imaging?

It can detect lesions at structural levels Signup and view all the answers

What is a disadvantage of CT imaging?

Repeated exposure may increase risk of cancer Signup and view all the answers

What color does a high-density body area appear in CT scans?

White Signup and view all the answers

What is an advantage of CT imaging mentioned in the text?

It can be used with angiograms to detect arterial structure abnormalities Signup and view all the answers

What does the text say about CT's ability to detect early stage ischemic stroke?

CT may appear normal or show only subtle changes in early stage ischemic stroke Signup and view all the answers

What is the advantage of functional MRI (fMRI)?

It provides high image resolution for evaluating brain function. Signup and view all the answers

Which of the following is NOT an application of Positron Emission Tomography (PET)?

Measuring electrical brain activities within the cerebral cortex Signup and view all the answers

What is an advantage of Electroencephalography (EEG)?

It is a cost-effective technique with high temporal resolution. Signup and view all the answers