If the original radiograph has good receptor exposure and the mAs is increased and the kVp is decreased according to the 15% rule, which of these statements is true?1) Receptor exposure increases2) Contrast increases3) Receptor exposure decreases4) Contrast decreases5) Receptor exposure stays the same6) Contrast stays the same

Which of the following projections of the skull would result in elongation of the anatomy being imaged?

Shape distortion includes which specific types of distortion?

If an x-ray beam has an intensity of 1.2 mGy at 60 inches, what is the intensity of the beam 40 inches?

Technical factors that are considered “geometric” include                           1. focal spot selection                           2. SID                           3. grid ratio                           4. filtration thickness                           5. OID                           6. tube angulation                           7. part thickness                           8. receptor resolution

Calculate the new  mA  required to maintain the same IR exposure produced with the original values.

The problem of unequal subject radiographic density is solved by a

Which of the following collimation settings will demonstrate the most uniform beam intensity within the exposure field?

All filtration can be expressed in terms of the thickness of

PART 2: Introduction to Diversity Indices (Measuring Diversity)   Using the table, calculate the total abundance in the community and the Pi value for each species. Next, calculate the natural log of Pi for each species (ln(Pi)) and then multiply the two columns to calculate Pi * ln(Pi). Limit your numbers to three decimal places. The Wildebeest has been given as an example for you.  Create your own table by clicking “Insert” and “Table” (You can also copy and paste the empty table and edit it). You are allowed to use a scientific calculator to solve the mathematical problems.  Pi = species abundance/total abundance in the community ln = natural log Species Species Abundance Pi  ln(Pi)  Pi * ln(Pi) Wildebeest 2 0.027 -3.624 -0.097 Elephant 3                                                 Zebra 5                                                 Hippo 1                                                 Impala 6                                                 Lion 3                                                 Baboon 17                                                 Warbler 22                                                 Crane 16                                                 Total abundance in the community   Start here                                                   H