If the First Radiograph of a Chest Is Done Using

question 50

Multiple Choice

If the first radiograph of a chest is done using 72 in and 12 mAs,and a second radiograph is done using 40 in,how much mAs should be used to maintain exposure to the IR?

• A) 2 mAs
• B) 4 mAs
• C) 7 mAs
• D) 9 mAs

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Definitions:

Human Genome Project

An international scientific research project aimed at mapping and understanding all the genes of the human species, completed in 2003.

Genetic Codes

Sequences of nucleotides in DNA or RNA that determine the genetic instructions used in the development and functioning of all known living organisms.

Genes

Units of heredity that carry information from parents to offspring, influencing traits and characteristics.

X-Linked

A gene carried on the X chromosome. If a male inherits an X-linked recessive trait from his mother, he expresses that trait because the Y from his father has no counteracting gene. Females are more likely to be carriers of X-linked traits but are less likely to express them.