The reduction of the intensity of a beam of x-rays as it passes through the patient is:

Which of the following controls the contrast of the computed tomography image?

The couch top (table top) of a computed tomography scanner table should have the following:I. low radiation absorption characteristicsII. made of carbon fiberIII. excellent vibration-damping features

The bow tie filter used in modern CT scanners:

The window width and window level settings for a given examination of the abdomen are 700 and 100 respectively. Which of the following is true?

Image reconstruction that uses raw data to automatically produce images during patient scanning is called:

Select the most appropriate window level for the for the best image display for the tissue in question::

Which of the following describes the beam that diverges from the x-ray tube to the outer edges of the detectors on a multi-detector CT scanner?

The analog-to-digital converter (ADC) converts:

How much anatomy (lengthwise) will be covered in a MDCT helical scan when the following parameters are selected:     15 seconds total acquisition scan time     0.5 second gantry rotation time     2 mm slice thickness     4 slices per rotation     pitch of 1.5