Exam 7: Digital Mammography

There are two objects that are of interest in the imaging process, the diamond- and oval-shaped objects, which are located at different levels in the breast.

Data processing uses rule-based methods and other approaches such as discriminant analysis, artificial neural networks, and the decision-tree method to distinguish between normal and abnormal patterns based on features obtained in qualitative interpretation.

Which of the following algorithms enhances the sharpness of the borders of mass lesions, but may make even an indistinct mass appear more circumscribed?

____________________ finds unique features that can be readily distinguished reliably between a lesion and other normal anatomical structures.

The detector system consists of a thin layer of a(n)____________________, a-Se, deposited onto a readout layer of electronics.

When X-rays fall upon the a-Se layer, an electric charge is released and readout using an electrode pad.

Film is processed using a chemical processor to render the latent image ____________________.

Digital mammography (DM)is radiography of the breast using a digital detector coupled to a computer that makes use of digital image processing techniques to enhance the visibility of detail and contrast of the image.

Which array is arranged as a matrix of pixels that are sensitive to the light from the CsI phosphor?

The DQE for F-S mammography system is about ____%.

Peripheral equalization displays lesion details well and preserves the peripheral information in the surrounding breast, but there may be a flattening of the image contrast in the ____________________ portions of the image.

The scintillator is made up of cesium iodide (CsI)activated by ____________________.

When X-rays fall upon the __________________ layer, an electric charge is released and readout using an electric field.

Digital mammography computer display monitors should be located in rooms that have ambient light of less than ____.

Mammography must be able to show the ____________________ between a lesion that is located in the breast and the normal anatomy that is around that lesion.

The X-ray tube travels ____ during the exposure to acquire data while the image detector remains stationary.

The imaging technique for breast ____________________ has two methods of acquiring data, namely the step-and-shoot method and the continuous exposure method.

Digital mammography can be used in visualizing ____ by using an iodinated contrast medium.

Mammography was developed as a dedicated imaging technique to detect breast cancer that has become prevalent among women in Europe.

The digital output from the computer must be converted from an analog signal so that it can be displayed on a monitor workstation.