SPECT Imaging Artifacts

What is the main cause of motion artifacts in SPECT imaging?

• Patient movement

• Equipment malfunction

• Incorrect calibration

• External interference

How do attenuation artifacts affect SPECT images?

• Attenuation artifacts have no impact on SPECT images.

• Attenuation artifacts cause false areas of increased activity or 'hot spots' in SPECT images.

• Attenuation artifacts cause false areas of decreased activity or 'cold spots' in SPECT images.

• Attenuation artifacts result in clearer and more accurate SPECT images.

What is the primary source of scatter artifacts in SPECT imaging?

• Rayleigh scatter

• Pair production

• Photoelectric effect

• Compton scatter

What impact do resolution artifacts have on SPECT image quality?

• Resolution artifacts can degrade SPECT image quality by reducing clarity and distorting spatial resolution.

• Resolution artifacts improve spatial resolution in SPECT images

• Resolution artifacts have no impact on SPECT image quality

• Resolution artifacts enhance SPECT image quality by providing additional details

What is the role of noise artifacts in SPECT imaging?

• Noise artifacts in SPECT imaging can degrade image quality and affect diagnostic accuracy.

• Noise artifacts in SPECT imaging are intentionally added to improve results

• Noise artifacts in SPECT imaging have no impact on diagnostic accuracy

• Noise artifacts in SPECT imaging enhance image quality

How can motion artifacts be minimized in SPECT imaging?

• Ensure patient remains still, use immobilization devices if needed, acquire images quickly

• Increase patient movement during imaging

• Acquire images slowly

• Use blurry imaging techniques

Explain the concept of photon attenuation in relation to SPECT imaging.

• Photon attenuation in SPECT imaging is the decrease in the number of photons as they pass through tissue, affecting image quality.

• Photon attenuation in SPECT imaging has no impact on the quality of the images produced.

• Photon attenuation in SPECT imaging refers to the speed at which photons travel through tissue.

• Photon attenuation in SPECT imaging is the increase in the number of photons as they pass through tissue, improving image quality.

What are some common methods to reduce scatter artifacts in SPECT imaging?

• Energy windowing, scatter correction algorithms, and collimators

• Increasing the scan time

• Using a higher dose of radiotracer

• Changing the patient's position

Describe the trade-off between resolution and sensitivity in SPECT imaging.

• The trade-off between resolution and sensitivity in SPECT imaging is that increasing resolution often decreases sensitivity and vice versa.

• There is no trade-off between resolution and sensitivity

• Decreasing resolution increases sensitivity

• Increasing sensitivity decreases resolution

How does the choice of collimator affect the presence of noise artifacts in SPECT images?

• Noise artifacts in SPECT images are not affected by collimator selection.

• Choice of collimator has no impact on noise artifacts in SPECT images.

• Choice of collimator affects noise artifacts by balancing spatial resolution and sensitivity.

• Using a collimator increases noise artifacts in SPECT images.