Blog

U-234 achieves the largest fraction of the total activity within [blank] uranium

A radiographer takes an initial radiograph using the technical factors of 50 mA at 0.46 seconds. There is involuntary motion on the radiograph, but the radiographer wants to maintain IR exposure. If the exposure time is reduced to 0.115 seconds, what is the new mA? Show your work and include the correct answer units.  

In general, thick body parts and large field sizes cause more scatter than kVp. 

A low quality x-ray beam travels far in body tissues.

Which of the following factors primarily controls subject contrast?

Match the following exams with the appropriate minimum kVp level to penetrate the part:

Using high mAs can compensate for insufficient x-ray beam penetrability.

The exposure factor that primarily controls the x-ray beam quantity is:

From an original technique of 40 mAs at 98 kVp, which of the following techniques would increase subject contrast in the remnant x-ray beam while at the same time maintaining overall exposure intensity to the image receptor plate? 

Which of the following factors go into deciding the optimum kVp?