Biology ยท Physics

Diagnostic Imaging

984 Questions

Diagnostic imaging involves various techniques used to look inside the human body for diagnosis and treatment. This covers technologies like computed tomography, ultrasound, and magnetic resonance imaging. These questions often appear in general science and general awareness examinations.

Medical imaging technologiesRadiation therapyDiagnostic proceduresNon-destructive testing

Diagnostic Imaging Questions

Multiple choice

Which of the following is NOT a common type of cancer screening test?

  1. Mammogram

  2. Pap smear

  3. Colonoscopy

  4. Blood test
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Blood tests are not typically used as a screening test for cancer. They may be used to monitor cancer after it has been diagnosed.

Multiple choice

What is the gold standard for diagnosing endometriosis?

  1. Pelvic exam

  2. Ultrasound

  3. MRI

  4. Laparoscopy
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Laparoscopy is the gold standard for diagnosing endometriosis, as it allows direct visualization of the pelvic organs and tissue.

Multiple choice

How is osteoarthritis diagnosed?

  1. Physical exam

  2. X-rays

  3. MRI

  4. Blood tests

  5. All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Osteoarthritis is diagnosed based on a physical exam, X-rays, MRI, and blood tests.

Multiple choice

How is rheumatoid arthritis diagnosed?

  1. Physical exam

  2. X-rays

  3. MRI

  4. Blood tests

  5. All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Rheumatoid arthritis is diagnosed based on a physical exam, X-rays, MRI, and blood tests.

Multiple choice

Which neuroimaging technique measures brain activity by detecting changes in blood oxygenation levels?

  1. fMRI

  2. EEG

  3. MEG

  4. PET
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

fMRI (functional magnetic resonance imaging) measures brain activity by detecting changes in blood oxygenation levels, which are associated with neural activity.

Multiple choice

Which neuroimaging technique measures brain activity by detecting magnetic fields generated by neural currents?

  1. fMRI

  2. EEG

  3. MEG

  4. PET
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

MEG (magnetoencephalography) measures brain activity by detecting magnetic fields generated by neural currents, which are associated with neural activity.

Multiple choice

What is the primary physiological signal measured by PET?

  1. Blood oxygenation

  2. Electrical activity

  3. Magnetic fields

  4. Glucose metabolism
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

PET (positron emission tomography) measures brain activity by detecting the distribution of radioactive tracers, which are taken up by neurons and reflect glucose metabolism, an indicator of neural activity.

Multiple choice

Which neuroimaging technique has the highest spatial resolution?

  1. fMRI

  2. EEG

  3. MEG

  4. PET
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

fMRI has the highest spatial resolution among the mentioned techniques, allowing for the visualization of brain activity in specific brain regions.

Multiple choice

Which neuroimaging technique has the highest temporal resolution?

  1. fMRI

  2. EEG

  3. MEG

  4. PET
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

EEG has the highest temporal resolution among the mentioned techniques, allowing for the measurement of brain activity on a millisecond timescale.

Multiple choice

Which neuroimaging technique is commonly used to study brain connectivity?

  1. fMRI

  2. EEG

  3. MEG

  4. PET
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

fMRI is commonly used to study brain connectivity by measuring the correlations in brain activity between different brain regions.

Multiple choice

Which neuroimaging technique is considered to be invasive?

  1. fMRI

  2. EEG

  3. MEG

  4. PET
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

PET is considered to be invasive because it involves the injection of radioactive tracers into the bloodstream.

Multiple choice

Which neuroimaging technique is typically the most expensive?

  1. fMRI

  2. EEG

  3. MEG

  4. PET
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

PET is typically the most expensive neuroimaging technique due to the cost of the radioactive tracers and the specialized equipment required.

Multiple choice

What is the primary application of neuroimaging techniques in clinical settings?

  1. Diagnosis of brain disorders

  2. Treatment of brain disorders

  3. Brain-computer interfaces

  4. Neuromodulation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The primary application of neuroimaging techniques in clinical settings is the diagnosis of brain disorders, such as stroke, epilepsy, and neurodegenerative diseases.

Multiple choice

Which type of medical robot is commonly used for remote surgery?

  1. Surgical robots

  2. Telepresence robots

  3. Rehabilitation robots

  4. Assistive robots
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Surgical robots are commonly used for remote surgery, allowing surgeons to perform complex procedures from a distance.

Multiple choice

How is ovarian cancer diagnosed?

  1. Pelvic exam

  2. Ultrasound

  3. Blood tests

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ovarian cancer is diagnosed with a pelvic exam, ultrasound, and blood tests.