Which of the following is the primary interaction between x-ray photons and tissue during computed tomography?

The process by which electrons are produced at the cathode of a CT x-ray tube is known as:

The assignment of different generations to CT scanners is based on the configuration of the:

When one is using a third-generation CT scanner, it is important that reference detectors positioned at the peripheral portions of the detector array be exposed to:

In 1979, the scientists __________ and __________ shared the Nobel Prize for their research in computed tomography.

The type of compensating filter used at the x-ray tube of a CT scanner is called a:

The interaction between x-ray and matter that is responsible for the production of the scatter radiation absorbed by the patient and detectors is:

The types of detectors used in computed tomography are:
1. Gas ionization
2. Stimulable phosphor
3. Scintillation

Which of the following is used in gas ionization CT detectors?

Which of the following statements concerning the translate-rotate mode of CT data acquisition is/are correct?
1. 360-degree circular detector arrays are used.
2. Data are collected only during translation.
3. Was used in first- and second-generation CT scanners

Which of the following terms accurately describes the type of x-ray beam used in a third-generation CT scanner?

Which of the following technologic advances has led to the development of spiral/helical CT scanning?
1. Slip-ring technology
2. Electron beam technology
3. High-efficiency x-ray tubes

For a given CT acquisition, the calculated mAs applied to each reconstructed slice may be referred to as the:

Which of the following technical factor adjustments will result in a reduction in patient radiation dose?

The approximate inherent filtration of the CT x-ray amounts to an aluminum equivalent of:

Which of the following acquisitions may be characterized as noncontiguous?

Which of the following acquisitions may be characterized as overlapping?

In multislice CT (MSCT), the beam pitch is equal to the table feed per rotation divided by the:

An acquisition is made on a 4-slice MSCT system with a detector array of 16 x 1.25-mm detector elements along the z-axis. With a selected beam width of 20 mm, what beam pitch would result in the table moving 35.00 mm for each rotation of the gantry?

In an MSCT system, the detector array is composed of multiple rows of individual detector elements along the:

The number, length, and organization of the individual detector elements in an MSCT system are referred to as the:

The type of MSCT detector array that contains midline narrow elements flanked by wider detectors is called a(n):

A 64-slice MSCT system employs an array of 64 detectors, each with a dimension of 0.625 mm. What beam collimation is required to expose the middle 32 detectors of the array to transmitted x-radiation?

The component of the DAS responsible for strengthening the signal emitted from a detector is termed the:

The process of scanning a phantom device of known density to improve the accuracy of CT attenuation measurement may be referred to as:

Which of the following technical parameters would greatly improve the quality of CT studies requiring multiplanar reformation (MPR) images?

In 1917, Austrian mathematician __________ proved that it was possible to reconstruct a three-dimensional object from the infinite set of all of its projections.

Which of the following types of image reconstruction was used in the first prototype CT scanner?

During CT angiography, images may be reconstructed using only the greatest density encountered along each ray. This type of specialized CT image is called a(n):

CT images that have been reconstructed from a portion of the data acquisition process in the hopes of reducing patient motion artifacts are called:

Which of the following is not an iterative method of CT image reconstruction?

Which of the following manipulations involves the use of image data?

As a solid-state CT detector measures transmitted radiation, it emits a proportional response in the form of a(n):

During a CT scan, each sample of ray sum measurements made by the data acquisition system (DAS) is called a: