Exam 16: Computed Tomography

The collimator that limits the patient's radiation exposure is the:

It is important to balance reductions in patient dose with:

Pitch ranges from:

The WL should be set:

As a result of using multiple rows of detectors,the x-ray beam becomes wider and is called:

The collimator that reduces the amount of scatter produced in the patient is the:

A CT image typically has a ________________ matrix.

Using a large matrix and thin slices improves:

The number of rows and columns that make up the digital image is the:

The smallest component of the matrix is the:

The Hounsfield scale includes ___________ CT numbers.

For CT, the filter placed between the tube and patient is shaped like a:

The matrix of CT numbers is the:

The component of the computer dedicated to performing the enormous number of calculations necessary for CT is the:

The CT number of water is:

Using a detector array with multiple rows allows this type of scanning.

A change in any factor that has more x-ray photons reaching the detector will result in an image with decreased:

The small amount of tissue represented by a pixel is the:

The collimator that improves image contrast by limiting the amount of scatter radiation that reaches the detector is the:

Which of the following statements is true regarding CT imaging?