Podcast
Questions and Answers
What does fMRI measure in relation to brain activity?
What does fMRI measure in relation to brain activity?
- Brain waves
- Nerve impulses
- Blood flow changes (correct)
- Brain glucose levels
Which part of the body would be most commonly imaged for orthopedic purposes using MRI?
Which part of the body would be most commonly imaged for orthopedic purposes using MRI?
- Liver
- Knee (correct)
- Abdomen
- Brain
In MRI, what does a black area in the heart indicate?
In MRI, what does a black area in the heart indicate?
- Healthy part of the heart (correct)
- Decreased blood flow
- Scar tissue
- Presence of contrast dye
Which field poses risks in MRI due to its high static magnetic field?
Which field poses risks in MRI due to its high static magnetic field?
What can fast changing magnetic fields during MRI scanning generate?
What can fast changing magnetic fields during MRI scanning generate?
In MRI, what is the purpose of gradients, such as electromagnets in three directions?
In MRI, what is the purpose of gradients, such as electromagnets in three directions?
What factor influences the mean positron range in tumours?
What factor influences the mean positron range in tumours?
How does the non-collinearity effect impact resolution degradation?
How does the non-collinearity effect impact resolution degradation?
What is a consequence of a typical scanner having a diameter of 80cm?
What is a consequence of a typical scanner having a diameter of 80cm?
Which scenario makes it more challenging to identify triple coincidences during detection?
Which scenario makes it more challenging to identify triple coincidences during detection?
How does the parallax effect impact effective crystal size near the edge of the Field of View (FoV)?
How does the parallax effect impact effective crystal size near the edge of the Field of View (FoV)?
What is a key feature that scanners aim to maximize for improved detection of high energy photons?
What is a key feature that scanners aim to maximize for improved detection of high energy photons?
What is the recommended interval for mammography screening in women aged 50-75?
What is the recommended interval for mammography screening in women aged 50-75?
Which breast imaging technique is described as having very high sensitivity, being expensive, and not using ionizing radiation?
Which breast imaging technique is described as having very high sensitivity, being expensive, and not using ionizing radiation?
To differentiate between cysts and solid masses in the breast, which imaging technique is usually used in addition to mammography?
To differentiate between cysts and solid masses in the breast, which imaging technique is usually used in addition to mammography?
What is the purpose of using low energy x-rays for mammography?
What is the purpose of using low energy x-rays for mammography?
Which type of tissue predominance makes mammography extremely sensitive in detecting malignancies?
Which type of tissue predominance makes mammography extremely sensitive in detecting malignancies?
Why does the heel effect allow for the use of low-energy x-rays for breast mammography?
Why does the heel effect allow for the use of low-energy x-rays for breast mammography?
What is kept at ground potential (0 V) to reduce off-focal radiation in mammography?
What is kept at ground potential (0 V) to reduce off-focal radiation in mammography?
Which x-ray tube component has dual filaments of different sizes and is used for better resolution or shorter exposure time?
Which x-ray tube component has dual filaments of different sizes and is used for better resolution or shorter exposure time?
What is the primary function of the filter in mammography x-ray energy spectrum shaping?
What is the primary function of the filter in mammography x-ray energy spectrum shaping?
What characteristic makes molybdenum (Mo) and rhodium (Rh) preferred anode materials for mammography tubes?
What characteristic makes molybdenum (Mo) and rhodium (Rh) preferred anode materials for mammography tubes?
What is the main advantage of using iterative reconstruction (IR) over filtered back-projection (FBP) reconstruction?
What is the main advantage of using iterative reconstruction (IR) over filtered back-projection (FBP) reconstruction?
What is the relationship between the reconstruction kernel and the resulting image characteristics?
What is the relationship between the reconstruction kernel and the resulting image characteristics?
What is the purpose of the iterative reconstruction process?
What is the purpose of the iterative reconstruction process?
How does iterative reconstruction (IR) improve image quality compared to filtered back-projection (FBP) reconstruction?
How does iterative reconstruction (IR) improve image quality compared to filtered back-projection (FBP) reconstruction?
What is the relationship between radiation dose and image quality in the context of the text?
What is the relationship between radiation dose and image quality in the context of the text?
What type of values can be assigned to visual characteristics in medical imaging?
What type of values can be assigned to visual characteristics in medical imaging?
Which image modality is mentioned as having more difficulty in classifying voxels as a combination of basic tissue types?
Which image modality is mentioned as having more difficulty in classifying voxels as a combination of basic tissue types?
What is the purpose of the projection of a 3D volume (image data) onto a 2D screen?
What is the purpose of the projection of a 3D volume (image data) onto a 2D screen?
What is a key disadvantage of the Maximum Intensity Projection (MIP) technique for 3D visualization?
What is a key disadvantage of the Maximum Intensity Projection (MIP) technique for 3D visualization?
What is a common variation of the Maximum Intensity Projection (MIP) technique?
What is a common variation of the Maximum Intensity Projection (MIP) technique?
Why are MIP images considered ambiguous and not easily interpretable in a simple way?
Why are MIP images considered ambiguous and not easily interpretable in a simple way?
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