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BEAM PENETRABILITY IS INCREASED IF _____________ IS INCREASED.

KVP

1

THE PRINCIPLE DIFFERENCES BETWEEN X-RAYS AND GAMMA RAYS IS:

THE REGION OF THE ATOM FROM WHICH THEY ORIGINATE

2

WHAT IS THE RELATIONSHIP BETWEEN THE WAVELENGTH AND THE FREQUENCY OF AN X-RAY PHOTON?

FREQUENCY AND WAVELENGTH ARE INVERSELY RELATED

3

AN EXPOSURE TAKEN AT 100 KVP WOULD HAVE CONTINUOUS EMISSION SPECTRUM WITH A MAXIMUM ENERGY OF ____ KEV.

100

4

WHICH OF THE FOLLOWING IS GREATER IN A 70 KEV X-RAY THAN FOR A 20 KEV X-RAY?

FREQUENCY

5

AN X-RAY BEAM THAT COULD PASS THROUGH DENSE TISSUE WOULD HAVE:

PENETRABILITY AND QUALITY

6

IF THE DISTANCE FROM THE SOURCE TO THE IMAGE (SID) IS REDUCED BY HALF, HOW IS THE X-RAY INTENSITY AT THE IMAGE AFFECTED?

IT IS INCREASED 4 TIMES

7

ENERGY HAS THE ABILITY TO DO ________.- EG POTENTIAL, KINETIC

WORK

8

NORMAL TUBE POTENTIAL FOR RADIATION THERAPY TREATMENT PROCEDURES IS AT 14,000,000. WHEN EXPRESSED IN THE SCIENTIFIC FORM THIS IS EQUIVALENT TO _________________________ VOLTS.

1.4X10^7

9

THE TERM MEGAHERTZ STANDS FOR ________________________HERTZ.

A MILLION

10

TRUE OR FALSE: THE NUMBER OF PROTONS AND NEUTRONS IN THE NUCLEUS IS REPRESENTED BY THE LETTER A

TRUE

11

IN RADIATION THERAPY MACHINES, THE HALF-LIFE OF COBALT 6O IS 5 YEARS. INITIALLY THE RADIATION EMITTED BY THE MATERIAL IS 13 CURIES. HOW MUCH WILL IT BE WHEN IT REACHES ITS SECOND HALF-LIFE.

3.25 CURIES

12

ELEMENTS THAT HAVE A Z NUMBER HIGHER THAN _____________ ARE CONSIDERED RADIOISOTOPES.

83

13

THE PHOTON ENERGY RELEASED FROM A TUNGSTEN ATOM WHEN THE M SHELL TRANSFERS ITS ORBITAL ELECTRON INTO THE K SHELL ORBIT IS APPROXIMATELY ______ KEV.

67

14

THE ANCIENT GREEK ATOMIC THEORIES BELIEVED THAT THE COMPOUNDS WERE COMPOSED OF:

FIRE, WATER, AIR AND EARTH

15

INERTIA IS:

RESISTANCE TO A CHANGE IN MOTION

16

THE HIGHER THE ELECTRON ENERGY FROM THE CATHODE TO ANODE, THE MORE ___________________ RADIATION WILL OCCUR.

BREMSSTRAHLUNG

17

FILTRATION IN THE X-RAY MACHINE NEEDS TO HAVE A TOTAL OF _________MM OF ALUMINUM IN ORDER TO REMOVE SOFT X-RAYS.

2.5

18

BETA NEGATIVE DECAY OCCURS WHEN THERE IS

AN EXCESS NUMBER OF NEUTRONS

19

AN EXPOSURE OF 30 MR/HR IS TAKEN AT 72 INCHES. A NEW EXPOSURE IS TAKEN THAT MEASURES 120 MR/HR. WHAT IS THE DISTANCE?

36 INCHES

20

INCREASING ADDED FILTRATION AND KILOVOLTAGE WOULD SERVE TO ________ THE EFFECTIVE ENERGY OF THE XRAY BEAM.

INCREASE

21

THE SPEED OF XRAY PHOTONS ARE BASED ON THE FACT THAT THEY ARE A FORM OF:

ELECTROMAGNETIC ENERGY

22

DISCRETE SPECTRUM (CHARACTERISTIC RAYS) AND CONTINUOUS SPECTRUM (BREM RAYS) ARE A PART OF THE:

XRAY EMISSION SPECTRUM

23

A STABLE IODINE ATOM HAS A Z NUMBER OF 53 AND AN A NUMBER OF 127. HOW MANY NEUTRONS DOES IT HAVE?

74

24

THE FREQUENCY OF AN ELECTROMAGNETIC WAVE IS MEASURED IN:

THE NUMBER OF CYCLES PER SECOND

25

THE PRIMARY PURPOSE OF FILTRATION:

RADIATION PROTECTION

26

IF THE INTENSITY OF 70 KVP EXPOSURE AT 20 SID FOR A SHOULDER IS 9MR, WHAT WOULD THE EXPOSURE BE AT AN SID OF 60.

1

27

THE ENERGY OF A PROJECTILE ELECTRON OF 74 KEV IS SUDDENLY DECELERATED BY THE NUCLEAR ELECTRIC FIELD AND ESCAPES WITH AN ENERGY OF 17 KEV. WHAT IS THE ENERGY OF THE RESULTANT ELECTROMAGNETIC PHOTON?

57 KEV

28

X-RAYS AND GAMMA RAYS HAVE THE :

SHORTEST WAVELENGTHS

29

XRAYS ARE PRODUCED AS INCIDENT ELECTRONS INTERACT WITH K-SHELL ELECTRONS, IN THE TARGET ATOMS BY A PROCESS CALLED:

CHARCTERISTIC