5 Questions
What happens to the data obtained at the detector channel in CT?
They are passed on as electric signals corresponding to the actual x-ray attenuation
What is the basic principle of computed tomography (CT)?
Measuring the weakening of x-rays at numerous positions around the patient
How are the electric signals from the detector channel processed in CT?
They are digitized and transmitted to the image processor
What is the 'pipeline principle' in CT reconstruction referring to?
Consisting of preprocessing, convolution, and back projection
What is the role of the image processor in CT?
Reconstructing the images from the digitized electric signals
Study Notes
Computed Tomography (CT) Principles
- The data obtained at the detector channel in CT is converted into electric signals, which are then processed and reconstructed into an image.
Basic Principle of CT
- The basic principle of CT is based on the rotational X-ray beam and the attenuation of X-ray intensity as it passes through the body.
Signal Processing in CT
- The electric signals from the detector channel are processed through a series of steps, including amplification, filtration, and digitization, to produce raw data.
The 'Pipeline Principle' in CT Reconstruction
- The 'pipeline principle' in CT reconstruction refers to the series of sequential steps involved in image reconstruction, including filtering, backprojection, and image display.
Role of the Image Processor in CT
- The image processor in CT plays a crucial role in reconstructing the final image from the raw data, applying algorithms to correct for artifacts and improve image quality.
Test your knowledge of CT scanning principles and procedures with this quiz. Explore the basics of computed tomography and gain insights into the indirect measurement of x-ray attenuation.
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