Exam 2: Digital Imaging Processing Concepts

It is important that technologists and radiologists alike become well versed in the nature, scope, and principles of ____________________.

The matrix size has an effect on the detail, or bit depth, of the image.

____ involves averaging a set of images to reduce image noise.

The inverse ____________________, denoted by FT -1, is used to transform an image in the frequency domain back to the spatial location domain for viewing by radiologists and technologists.

Image processing operations are intended to change the intensity values of the pixels in the input image and display the resulting changes in the output image, with the goal of changing the characteristics of the image to suit the needs of the observer in order to enhance diagnosis.

Digital image pre-processing is a range of techniques that allow the user to change the appearance of a digital image displayed on a monitor for viewing and interpretation.

Which process is intended to sharpen an input image in the spatial domain that appears blurred?

A digital image is made up of numbers; by definition, the range of the numbers is the ____ and the center of the range is defined as the ____.

All digital radiography imaging modalities including CR, flat-panel digital radiography, digital mammography, and digital fluoroscopy, utilize digital image processing as a central feature of their operations.

In digital radiography, which of the following is a numerical representation of the patient?

What class of digital image processing allows measurements and statistics to be performed, as well as image segmentation, feature extraction, and classification of objects?

A more recent form of compression that has been receiving attention in digital diagnostic imaging is that of ____________________ compression.

The processing of images using a computer is called ____.

Which of the following would generate an output signal in which its intensity varies continuously depending on the location of the light on the image?

The greater the ____________________, the more accurately the signals from the detectors can be digitized for a faithful reproduction of the original signal.

In radiology, what is the viewing task of the radiologist?

Which of the following processing operations is simple and the one most frequently used in digital diagnostic imaging?

The images obtained in radiology can be represented in two domains, based on how they are acquired: the spatial location domain, and the ____________________ domain.

In the act of ____________________, the kernel scans across the entire image, pixel by pixel.

Where do MRIs acquire data from the patient?