Partial or complete collapse of the lung is termed:

 The most common material used for the radiopaque strips in a grid is:

Match each of the following questions with the appropriate radiographic image.  Responses may be used more than once. shoulder short and long scale.jpg

Cardiomegaly is defined as a(n):

Who was responsible for improving Dr. Gustave Bucky’s design of the grid by designing a device that allowed the grid to move during exposure?

How can the radiographer change the penetration of the x-ray beam?

A radiograph of a clavicle is taken using 12 mAs at 60 kVp with a 5:1 grid.  If an 8:1 grid is employed for the same exposure, what will the new mAs be?

Which device is used to reduce scatter reaching the image receptor?

Which of the following grid errors will result in correct density in the center of the image, but lower density on the sides? Off-level Off-focus Off-center Upside-down

Which of the following conditions would result in increased scatter radiation reaching the image receptor, thus warranting the need for appropriate beam restriction?  Small anatomical parts Large anatomical parts High kilovoltage Low kilovoltage Using a grid Not using a grid