review of all tests

Question 1

the physical area of a rotating anode focal track, affected by the cathode electron beam is the

Answer 1

actual focal spot

Question 2

the two types of anodes

Answer 2

rotating, stationary

Question 3

what type of anode is typically used in dental radiography

Answer 3

stationary

Question 4

what type of anode is best at dissipating heat

Answer 4

rotating

Question 5

as the actual focal spot size increases, the effective focal spot size

Answer 5

increases

Question 6

as the angle of the anode increases and the incident electron beam size remains the same, the effective focal spot size

Answer 6

increases

Question 7

the area of the focal spot that is projected out of the tube toward the object being radiographed is the

Answer 7

effective focal spot

Question 8

the exact point on the anode where the x ray beam is created is called the

Answer 8

focal spot

Question 9

the actual focal spot is controlled by the

Answer 9

length of the filament

Question 10

the most common range of diagnostic radiography target angle is between ___ degrees

Answer 10

12-17

Question 11

in order to control motion when taking a radiograph, what focal spot size should be chosen so a lower time can be utilized

Answer 11

large

Question 12

When radiographing a wedge - shaped anatomical structure such as a femur or foot the thicker portion of the anatomy should be positioned

Answer 12

under the cathode end of the tube

Question 13

which theory states that when tube angles are less than 45 degrees , the effective focal spot is smaller than the actual focal spot

Answer 13

line focus principle

Question 14

what is the percentage of heat produced in the production of x-rays

Answer 14

99%

Question 15

the factors that directly affect x ray quality are

Answer 15

kVp & beam filtration

Question 16

The factors that directly affect x-ray quantity are

Answer 16

mA, time, filtration

Question 17

The product of the x-ray tube current and exposure time is equal to

Answer 17

x-ray beam quantity

Question 18

as the mAs doubles, the number of electrons flowing from cathode to anode

Answer 18

increase times 2

Question 19

mAs doesn’t directly affect

Answer 19

beam quality

Question 20

3 prime factors that are under the direct control of the radiographer

Answer 20

kVp, mAs, distance

Question 21

is how light or dark an image appears on the computer monitor

Answer 21

brightness

Question 22

size bloom can be described as

Answer 22

an increase in the focal spot size

Question 23

When a machine is described as “dual focus” this mean that

Answer 23

there are two filament lengths

Question 24

when performing exams where a heavy heat load will be used what focal spot size should be chosen

Answer 24

large

Question 25

which focal spot size should be used on an extremity exam, such as a hand

Answer 25

small

Question 26

penumbra or “ghosting of an image is a result of

Answer 26

off focus radiation

Question 27

The exposure of the beam should remain unchanged as long as the intensity and duration of the x-ray exposure remain unchanged

Answer 27

the reciprocity law

Question 28

increasing the KVP for an exposure will

Answer 28

cause an increase in the speed at which the electrons travel from cathode to anode

Question 29

if the mAs of a radiograph is increased from 10 to 20 the resulting radiograph will exhibit

Answer 29

increased film density

Question 30

The relationship between mAs and exposure is

Answer 30

directly proportional

Question 31

Kilovoltage is the primary controlling factor of

Answer 31

photon penetrability

Question 32

the anode heel effect will be seen mostly with ____ films at ___ distances

Answer 32

large, short

Question 33

the variation in beam intensity from anode to cathode is __%

Answer 33

45

Question 34

x ray beam penetrability is primarily controlled by

Answer 34

kVp

Question 35

after completing an upright abdomen radiograph using a manual technique, you notice some degree of motion artifact on the final image, to improve the repeat image results your best option would be to? 

Answer 35

Maintain the mAs but increase the mA and reduce the time

Question 36

The reason for the anode heal effect is 

Answer 36

The anode absorbs a portion of the beam

Question 37

An anode with a small effective and actual focal spot will improve

Answer 37

detail

Question 38

what formula should be utilized to compensate for changes in intensity

Answer 38

inverse square law

Question 39

the length of the exposure time for a radiograph is used primarily to control

Answer 39

motion

Question 40

an increase in kVp by 15% will cause an approximate ___ in exposure

Answer 40

doubling