Brain Scanning Techniques Quiz

What does CAT in CAT scans stand for?

• Computerised Axial Tomography

• Computed Anterior Tomography

• Computed Axial Tomography

• Computerised Anterior Tomography

What is a key difference between a standard X-ray and a CAT scan?

• CAT scans use a single beam

• CAT scans use multiple beams from different angles

• Standard X-rays provide more detailed images

• Standard X-rays are safer than CAT scans

What is a major risk associated with CAT scans?

• Exposure to radiation

• Invasive surgical procedure

• High cost

• Use of radioactive substances

Why are pregnant women advised to avoid CAT scans?

• They can cause damage to the unborn baby

• They are too expensive

• They require fasting

• They are ineffective for pregnant women

What substance is used as a tracer in PET scans?

• Barium

• Iodine

• Technetium

• Fluorodeoxyglucose

What do PET scans detect in the brain?

• Blood flow

• Gamma rays

• Abnormal levels of activity

• Magnetic fields

What is a disadvantage of PET scans compared to other techniques?

• They are noninvasive

• They use magnetic fields

• They require the injection of a radioactive substance

• They are faster than CAT scans

What does fMRI stand for?

• Functional Magnetic Radiation Investigation

• Functional Magnetic Resonance Investigation

• Functional Magnetic Radiation Imaging

• Functional Magnetic Resonance Imaging

What is the principle behind fMRI scanning?

• Brain activity is associated with blood flow

• Brain activity is associated with radiation

• Brain activity is associated with glucose levels

• Brain activity is associated with X-ray absorption

Why might some people be unable to have an MRI scan?

• They have a cardiac pacemaker

• They are claustrophobic

• They are allergic to contrast dye

• They have a fear of needles