MRI and PET Scans: Understanding Diagnostic Imaging

What is a key difference between MRI and PET scans in terms of imaging technique?

• MRI uses magnetic fields and radio waves.

• PET scans use sound waves.

• MRI uses radioactive material.

• PET scans use magnetic fields.

How do MRI scans create detailed images of the body?

• By using ultrasound waves.

• By using X-rays to penetrate tissues.

• By aligning hydrogen atoms with a magnetic field.

• By detecting gamma rays emitted by the body.

What is the role of radioactive material in PET scans?

• To emit sound waves for imaging.

• To detect changes in metabolism and blood flow.

• To align hydrogen atoms in the body.

• To create a magnetic field.

Which scan typically takes longer to complete?

• Neither, they are instantaneous

• Both take the same time

• MRI scan

• PET scan

Why might patients prefer MRI over PET scans in terms of safety?

• MRI uses ionizing radiation.

• PET scans are more detailed.

• PET scans are faster.

• MRI does not use ionizing radiation.

Which imaging technique is more suitable for repeated scans due to safety concerns?

• Both are equally safe

• MRI scan

• Neither, both are unsafe

• PET scan

What type of information does an MRI scan provide?

• Images of blood flow only.

• Functional images of metabolic activity.

• Detailed images of anatomy and tissue structure.

• Real-time video of organ function.

How do PET scans help in cancer diagnosis?

• By aligning hydrogen atoms in cancer cells.

• By using sound waves to detect tumors.

• By revealing areas of increased metabolic activity.

• By providing high contrast images of tissues.

What advantage does MRI have in distinguishing tumor types?

• It is faster than PET scans.

• It provides functional images.

• It can distinguish between benign and malignant tumors.

• It uses radioactive material.

What is a common use of PET scans in cancer treatment?

• To provide high contrast images of tissues.

• To determine the stage of cancer.

• To align hydrogen atoms in the body.

• To use magnetic fields for imaging.