A group of investigators is conducting research on brain tumors, and they need to obtain three-dimensional brain views to localize the tumors. Which instrument will provide the least invasive way to obtain their objective?
A)electroencephalography (EEG)
B)computerized axial tomography (CAT)
C)positron emission tomography (PET)
D)magnetoencephalography (MEG)

Question

Quizplus · Accepted Answer

Computerized axial tomography (CAT), also known as computed tomography (CT), is a non-invasive imaging technique that creates three-dimensional images of the brain using X-rays. It provides detailed anatomical information about the brain, allowing the investigators to localize the tumors without invasive procedures such as surgery. EEG, PET, and MEG are also imaging techniques but they are not as useful for obtaining three-dimensional views of the brain. EEG records brain activity through electrodes placed on the scalp, while PET and MEG measure brain activity indirectly by tracking the uptake of radioactive tracers or magnetic fields, respectively.

A Group of Investigators Is Conducting Research on Brain Tumors