Exam 10: Quality Control for Digital Radiography

Radiographic images do not include the patient's name and date of birth; instead, a unique patient identification number is used as the file header.

The period of ____________________ is important in deciding upon which indicators of changes in performance we are going to monitor routinely.

One of the tasks of the technologist after the DR image is acquired determining whether the image is underexposed or ____________________.

Some errors are the result of improper practice by the technologist, such as incorrect technique factor selection and artifacts from patient clothing or jewelry that interfere with the projected ____________________.

If the operator interface to the machine is extremely complex, ____________________ errors will increase exponentially.

When an exam is scheduled for a particular imaging resource, the RIS makes a list of patients available to the DR ____________________ station.

Integrated systems have uniform surfaces to capture the radiographic projection, but the efficiency of collection of stimulated emissions is highly nonuniform across the field of view.

Having considered specific QC activities that can help monitor and improve image quality, it is useful to construct a table that identifies each QC task and the party responsible for performing the task.What is this table called?

What is another name for the flowchart of the steps involved in performing a DR exam?

The DICOM modality worklist (MWL)is a feature designed specifically to take advantage of information that already exists in ____.

The clinical ____________________ is responsible for equipment life cycle management and is therefore intimately involved in calibrations and service.

For cassette-based systems, the duration of erasure could be too short or the intensity of the erasure could be too low, perhaps from burned out erasure ____________________.

Because verifying every performance parameter before each exam would interfere with clinical operations, periodic measurements assure that the system is properly configured and calibrated and that performance has not ____________________.

The specific QC tests that are required for digital mammography are those specified by the imaging equipment manufacturer, with the exception of the limitation on maximum radiation dose, which is not more than that allowed for a ____.

At extremely high contrast, any DR image will appear ____________________.

In DR, demographic and exam data accompany the DR image in an electronic file header.What is this called?

Acquiring a ____ image according to the specific conditions of the manufacturer makes it possible to verify uniformity, absence of receptor defects, gain, and the value of the DR exposure indicator.

Which calibration for nonuniformity must be repeated on a periodic basis?

Human errors tend to be systematic and predictable.

____ arise from interference with the projected x-ray beam, image receptor defects, and interference with conversion of the captured projection into a digital image.