Exam 38: Computed Tomography Patient Radiation Dose

Most modern CT scanners are _______________________ technology.

The combination of output radiation intensity and volume of tissue imaged is called ________________________.

U.S. Public Health Service data suggests that CT examinations currently account for approximately ________ of total patient effective dose.

In multislice helical CT, the dose profile tail is called ____________.

Overranging occurs because of ___________________.

Typical CT doses range from ___________________ during head imaging and from __________ during body imaging.

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

A pitch of 1 indicates that with each rotation of the tube, the patient will move _________.

The __________ collimators define the cone beam and the ________ collimators further reject scatter radiation.

In CT imaging, as with radiography, patient dose is ________________ to x-ray beam intensity and ___________________ to the average beam energy.

Because CT uses a cone-shaped x-ray beam, scatter radiation is ______________, and contrast resolution is ____________.

Which two dimensions are measured to engage the Size-Specific Dose Estimate (SSDE)?

During helical CT, at a pitch of 1.0, the patient radiation dose is approximately ____________ that of conventional CT.

CT tissue dose is approximately ____________ the average fluoroscopic dose.

Which of the following data needs to be known to determine effective dose in CT?