IMAG 2126 Chapter 38 Computed Tomography Patient Radiation Dose

Front

Computed tomography results in a uniform dose throughout the section of the patient being ______.

Back

imaged

Front

What type of beam is used in CT in modern equipment? Options: Pencil beam, Fan beam, Cone beam, Laser beam

Back

Cone beam

Front

In Third Generation Systems, the detector array is ________.

Back

three dimensional

Front

Which of the following statements is true about CT procedures? CT is considered a low-dose procedure. CT tissue dose is approximately equal to the average fluoroscopic dose. CT dose is non-uniform. CT exposes the patient with a broad beam of X-rays.

Back

CT tissue dose is approximately equal to the average fluoroscopic dose.

Front

What happens to the patient dose when the multislice value is increased?

Back

It decreases

Front

In CT, penumbra refers to

Back

the dose profile tail

Front

Fill in the blank: The penumbra is related to the ______ of the beam.

Back

Edges

Front

Penumbra contributes to patient dose in CT?

Back

True

Front

What is CTDIvol?

Back

The measure of the output intensity of the system

Front

CTDI_vol is a weighted average of the ______.

Back

test object measurements