An initial hip examination of a patient taken in the department using a 12:1 grid was exposed at 80 kVp and 30 mAs.  What new technique will be needed to maintain density if a portable hip radiograph is later needed using a 5:1 grid?

Which of the following terms describes the differential absorption of the x-ray beam due the different transmission and attenuation effects of the human body?

Stationary grids that may be placed directly to the front of a radiographic cassette are called:

A satisfactory radiograph is produced using 9 mAs at 65 kVp without a grid.  A second film is requested using a 10:1 grid.  What mAs is needed to produce the second radiograph?

If the x-ray tube is not aligned to the convergence line, what type of grid error may occur?

Which of the following will reduce the production of scatter radiation?

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

Remnant radiation consists of which of the following types of radiation? Absorbed Transmitted Scattered

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 of the following statements concerning grids are true? A grid cleans up scatter, which improves image contrast. The grid conversion factor is the amount of increase in kVp necessary when converting from nongrid to grid technique. A grid’s primary purpose is for radiation protection. A grid’s main function is to prevent Compton scatter from reaching the IR. Grids prevent the production of scatter.