Podcast
Questions and Answers
What is the primary function of an analog-to-digital converter (ADC) in a digital computer?
What is the primary function of an analog-to-digital converter (ADC) in a digital computer?
- To display the output digital image on a monitor
- To convert analog signals into digital signals (correct)
- To convert digital signals into analog signals
- To process the digital image
What does each pixel in a digital image represent?
What does each pixel in a digital image represent?
- The average attenuation of all tissue being imaged (correct)
- The brightness level of a single tissue type
- The size of the pixel in the image
- The color of the tissue being imaged
What is the effect of decreasing the Field of View (FOV) on pixel size, assuming the matrix size is constant?
What is the effect of decreasing the Field of View (FOV) on pixel size, assuming the matrix size is constant?
- The pixel size decreases (correct)
- The pixel size becomes undefined
- The pixel size increases
- The pixel size remains the same
What is the purpose of converting the output digital image back into an analog signal?
What is the purpose of converting the output digital image back into an analog signal?
What is the formula to calculate the pixel size?
What is the formula to calculate the pixel size?
What can be adjusted to alter the image contrast and brightness in computed tomography?
What can be adjusted to alter the image contrast and brightness in computed tomography?
What is the formula to calculate the upper grey level in computed tomography?
What is the formula to calculate the upper grey level in computed tomography?
What is the purpose of post-processing in computed tomography?
What is the purpose of post-processing in computed tomography?
What is the lower grey level when the Window Level is 0 and the Window Width is 1000?
What is the lower grey level when the Window Level is 0 and the Window Width is 1000?
What is the name of the window with a Window Width of 150 and a Window Level of 600?
What is the name of the window with a Window Width of 150 and a Window Level of 600?
What will be the value of the upper grey level when the Window Level is 80 and the Window Width is 40?
What will be the value of the upper grey level when the Window Level is 80 and the Window Width is 40?
What is the typical window width value used to image the mediastinum?
What is the typical window width value used to image the mediastinum?
What is the effect of a narrow window width on an image?
What is the effect of a narrow window width on an image?
What is the purpose of adjusting the window width and level in CT imaging?
What is the purpose of adjusting the window width and level in CT imaging?
What is the typical window level value used to assess the lung fields?
What is the typical window level value used to assess the lung fields?
What is the effect of a wide window width on an image?
What is the effect of a wide window width on an image?
Which of the following structures has a high attenuation value?
Which of the following structures has a high attenuation value?
What is the main advantage of Volume Rendering in Computed Tomography?
What is the main advantage of Volume Rendering in Computed Tomography?
Which 3D image technique is favored in Computed Tomography?
Which 3D image technique is favored in Computed Tomography?
What is the main characteristic of 3D Maximum Intensity Projection (MIP) Rendering?
What is the main characteristic of 3D Maximum Intensity Projection (MIP) Rendering?
What is the result of using 3D Maximum Intensity Projection (MIP) Rendering in Computed Tomography?
What is the result of using 3D Maximum Intensity Projection (MIP) Rendering in Computed Tomography?
What is the purpose of 3D Minimum Intensity Projection (MinIP) Rendering in Computed Tomography?
What is the purpose of 3D Minimum Intensity Projection (MinIP) Rendering in Computed Tomography?
What is the purpose of defining a Region of Interest (ROI) on an image?
What is the purpose of defining a Region of Interest (ROI) on an image?
Which of the following is a function of the 'tools' in image display?
Which of the following is a function of the 'tools' in image display?
What is the unit of measurement for average CT numbers?
What is the unit of measurement for average CT numbers?
What is the purpose of a histogram in Computed Tomography?
What is the purpose of a histogram in Computed Tomography?
What is the term for the area on the image defined by the operator for statistical calculations?
What is the term for the area on the image defined by the operator for statistical calculations?
What is the benefit of using Virtual Reality (VR) and Maximum Intensity Projection (MIP) in image display?
What is the benefit of using Virtual Reality (VR) and Maximum Intensity Projection (MIP) in image display?