Computed Tomography and Image Reconstruction

What does CT stand for in CT Scan Technology?

• Computed Tomography

• Computerized Testing

• Centralized Technology

• Computed Topography

Tags

NGSS.HS-PS4-3

Which imaging technique is used to create cross-sectional images of the body in CT scans?

• Computed Tomography (CT) imaging

• Ultrasound imaging

• Magnetic Resonance Imaging (MRI)

• X-ray imaging

What is the purpose of image reconstruction in CT scans?

• To measure blood pressure levels

• To calculate the body mass index

• To create cross-sectional images of the body from raw data

• To analyze DNA sequences

Name one common algorithm used for image reconstruction in CT scans.

• K-means Clustering

• Filtered back projection

• Gradient Descent

• Fourier Transform

What is the function of window width in CT imaging?

• Affects the patient's heart rate

• Controls the contrast of the image

• Determines the patient's age

• Regulates the radiation dose

How does adjusting the window width affect the image in a CT scan?

• Adjusting the window width has no impact on the image quality in a CT scan.

• Window width adjustment affects the brightness of the image in a CT scan.

• Changing the window width distorts the image in a CT scan.

• Window width adjustment affects the contrast of the image in a CT scan.

What is the significance of window level setting in CT imaging?

• Window level setting in CT imaging determines the size of the image displayed

• Window level setting in CT imaging controls the brightness or darkness of the image by adjusting the center of the range of CT numbers displayed.

• Window level setting in CT imaging controls the contrast of the image by adjusting the sharpness

• Window level setting in CT imaging adjusts the color saturation of the image

Explain how changing the window level impacts the visualization of structures in a CT scan.

• Changing the window level impacts the visualization of structures in a CT scan by adjusting the range of CT numbers displayed, affecting contrast and brightness.

• Changing the window level impacts the visualization of structures in a CT scan by altering the scan resolution.

• Changing the window level impacts the visualization of structures in a CT scan by modifying the patient's position.

• Changing the window level impacts the visualization of structures in a CT scan by adjusting the radiation dose.

What is the typical range of window width values used in CT imaging?

• 700-800 HU

• 300-400 HU

• 500-600 HU

• 100-200 HU

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NGSS.HS-PS4-5

How does a narrow window width setting affect the image appearance in a CT scan?

• The image will have no impact on contrast or details.

• The image will have lower contrast and fewer details within a specific range of densities.

• The image will have a wider range of densities displayed.

• The image will have higher contrast and more details within a specific range of densities.

Tags

NGSS.HS-PS4-3