NEUROIMAGING TECHNIQUES Flashcards
What information does a CT Scan provide and how does it work?
CT Scans show detailed images of any part of the body. The patient lies on a bed that slowly moves while the x-ray tube rotates around them
Strengths and Limitations of a CT Scan
Strengths include:
- Detailed images
- Quick and painless
- Non-Invasive
- Accurate diagnosis
Can scan large portions of the body
Limitations include:
- Radiation exposure
- Expensive
- May cause allergic reactions
Claustrophobia
What information does an MRI Scan provide?
MRI Scans provide detailed images of internal structures with the use of radio waves and a strong magnetic field. It is useful for diagnosing conditions related to soft tissue, the brain and spinal cord.
Strengths and Limitations of an MRI Scan
Strengths include:
- No radiation
- Detailed images
- Non-invasive
- Can distinguish different tissues
- Can identify tumours, infections, injuries, ect
Limitations include:
- Expensive
- Time consuming
- Not always available
- Claustrophobia
- Noisy
- No metal implants
What information does an fMRI Scan provide?
fMRI Scans provide information about brain activity and functional areas by detecting changes in blood oxygen levels, this helps to diagnose brain disorders
Strengths and Limitations of an fMRI Scan
Strengths include:
- Non-Invasive
- No radiation
- Detailed brain activity
Limitations include:
- Expensive
- Time consuming
- Patients must remain still
- Data is complex
- Claustrophobia
What information does a PET Scan provide?
PET Scans help doctors diagnose, monitor and evaluate the treatment of various medical conditions by providing detailed images of metabolic activity within the body
Strengths and Limitations of a PET Scan
Strengths include:
- Detailed metabolic information
- Cancer detection
- Treatment monitoring
- Functional imaging (organ and tissue function)
Limitations include:
- Radiation exposure
- Expensive
- Limited structural detail
Not always available
