C1 Preboards

B. Concerns resting electric charges

What is electrostatics?

A. Governs movement of electric charges in a conductor

B. Concerns resting electric charges

C. It is the study of photon radiation

D. It is the conversion of kinetic energy

C. Accurately measures film density

A densitometer

A. Determines the efficiency of lead rubber

B. Assesses light outputs of intensifying screen

C. Accurately measures film density

D. Prevents formation of undesirable densities in the film

D. 12

What is the power rating in kW of a c-arm x-ray unit with a noted capacity of 120 kVp at 100 mA at 0.1 s?

A. 25

B. 22

C. 10

D. 12

B. Reflection

Which does NOT apply to diagnostic x-ray?

A. Absorption

B. Reflection

C. Penetration

D. Attenuation

A. 7.5

What is the percent reject rate if there are 150 reject films out of 2000 films in a monthly basis?

A. 7.5

B. 1.75

C. 17.5

D. 0.75

C. 60 kVp, 80 ms, 100 mA

Which technique will result to the LOWEST patient dose?

A. 1000 kVp, 200 ms, 100 mA

B. 58 kVp, 200 mA, 300 mA

C. 60 kVp, 80 ms, 100 mA

D. 90 kVp, 200 ms, 100 mA

A. Float Valve

What device controls the replenishment system of the film processor?

A. Float Valve

B. Timer

C. Motor Drive

D. Transport Rack

D. Amber

Which type of colored filter will NOT allow the darkroom processing of most types of green light sensitive films?

A. Red

B. White

C. Green

D. Amber

D. Similar output like a single-phase x-ray unit

A capacitor discharge x-ray unit has a:

A. Nonlinear x-ray output

B. Long exposure time

C. Usually designed for stationary x-ray unit

D. Similar output like a single-phase x-ray unit

C. Half

In the rule of thumb for x-ray techniques, what is the effect in the mAs if the kVp is increased by 15%

A. Double

B. None

C. Half

D. Triple

B. 0.75

There are 15 reject films due to positioning errors of the patient. There are a total of 150 reject films out of 2000 films produced by the department. 2 many percent of the total films produced are caused by positioning errors?

A. 7.5

B. 0.75

C. 1.75

D. 75

D. High doses delivered in a short time

Which of the following is MOST probable to trigger a deterministic effect of radiation?

A. Low doses delivered in a short time

B. High doses delivered in a long time

C. Low doses delivered in a long time

D. High doses delivered in a short time

D. 2-Phase

Which is NOT a usual type of x-ray generator?

A. High Frequency

B. 1-Phase

C. 3-Phase

D. 2-Phase

A. 3.5

Which thickness will give the LOWEST x-ray quantity to the x-ray beam in mm Al?

A. 3.5

B. 2.0

C. 2.5

D. 1.5

A. 500 mA

A chest x-ray examination will likely use

A. 500 mA

B. 1 mm focus

C. 60 kV

D. 2.0 mm Al filtration

A. Grenz Ray

Which is the softest radiation?

A. Grenz Ray

B. Diagnostic x-ray

C. Megavoltage x-ray

D. Supervoltage x-ray

D. Float Valve

What devices controls the replenishment system of the film processor?

A. Transport Track

B. Timer Mechanism

C. Drive Motor

D. Float Valve

D. Rhenium

Which material added to tungsten target to reduce pitting and cracking caused by overheating?

A. Aluminum

B. Rhodium

C. Molybdenum

D. Rhenium

D. High tension

What is the transformer where the voltage of the secondary winding is higher than the voltage of the primary?

A. Step up

B. Autotransformer

C. Step down

D. High tension

A. Sievert

Which is the appropriate unit for dose equivalent?

A. Sievert

B. Curie

C. Disintegration per second

D. Becquerel

D. Patient Thickness

Which will not influence x-ray output intensely?

A. SID

B. kVp

C. mAs

D. Patient Thickness

B. Actual Focal Spot

What is the area in the anode material struck by electrons during x-ray production?

A. Nominal

B. Actual Focal Spot

C. Effective Focal Spotl

D. Target

B. Inform the hospital engineer

Before attempting to replace a fuse, you should _______?

A. Check if the fuse is not working

B. Inform the hospital engineer

C. Disconnect any electrical wirings from convenience outlet

D. Check the fuse rating

C. Non-magnetic

What is the term given to materials that are not attracted to magnets?

A. Paramagnetic

B. Antimagnetic

C. Non-magnetic

D. Ferromagnetic

D. 10

What is the equivalent unit of 1 rem in mSv?

A. 5

B. 100

C. 0.1

D. 10

B. 0.1

What percentage of the x-ray primary beam is usually produced as scatter x-ray?

A. 100

B. 0.1

C. 1

D. 10

A. Fibrosis

Which is the associated biological effect for the irradiation of muscle?

A. Fibrosis

B. Necrosis

C. Ulcer

D. Erythema

C. Absolute

Which is the PREFFERED method of expressing cancer risk induction?

A. Excess

B. Negligible

C. Absolute

D. Relative

A. Interphase death

Which will be the result of cell transformation after irradiation?

A. Interphase death

B. Chromosomes aberration

C. Non stochastic effect

C. Bone marrow

This organ is the factory for blood formation

A. Heart

B. Thyroid

C. Bone marrow

D. Breast

C. III only

Which of the following ICRP system of dose limitation is/are NOT applicable to patient protection?

I. Justification

II. Optimization

III. Dose limitation

A. I only

B. II only

C. III only

D. I, II only

C. Decreases if tube voltage increases but mAs held constant

Which best describes the exit dose from a patient during x-ray exposure?

A. Depends primarily on backscattered electrons

B. Depends on x-ray focal spot

C. Decreases if tube voltage increases but mAs held constant

D. Depends on x-field size

D. Single phase half wave

Which x-ray generator will give the LOWEST x-ray tube output?

A. Single phase full wave

B. Constant potential x-ray machine

C. Three phase 12 pulses

D. Single phase half wave

C. 2.5%

What will be the rejected rate if 25 films of 1000 films were found to be wasted?

A. 0.25%

B. 5%

C. 2.5%

D. 25%

D. Positive, negative

The anode and cathode are respectively charge as:

A. Positive, positive

B. Negative, negative

C. Negative, positihve

D. Positive, negative

C. Energy

Which will be greater for green light compared with red light?

A. Wavelength

B. Charge

C. Energy

D. Mass

B. 3

How many half value layers (HVL) will it take to achieve a shielding attenuation of more than 10%

A. 4

B. 3

C. 2

D. 5

D. DNA

Which molecule is MOST sensitive to radiation?

A. Proteins

B. Water

C. RNA

D. DNA

D. Radioparent

Which characteristics objects that can readily transmit all incident

A. Radiosensitive

B. Radiolucent

C. Radiopaque

D. Radioparent

D. Report to the radiologist/radiation protection officer the situation

What will the radiologic technologist FIRST do if a patient was found out to be pregnant AFTER the x-ray procedure was done?

A. Do not inform the patient of her condition

B. Tell the patient that radiation is hazardous to her pregnancy

C. Ask the patient the stage of pregnancy

D. Report to the radiologist/radiation protection officer the situation

D. Restricted access for non-radiation workers

Which closely defines a radiation controlled area?

A. Monitored by survey meters

B. Occupied by general public

C. Continuously evaluated for radiation safety

D. Restricted access for non-radiation workers

A. Increase the field size

Which will GREATLY increase the dose to the gonads if the gonads are outside the primarily x-ray beam?

A. Increase the field size

B. Increasing patient to film distance

C. Reducing grid ratio

D. Selecting small focal spot

D. 40

There is a 10 percent reject films out of 20,000 films in the department. Two (2) percent of this reject is caused by darkroom related errors. How many films are caused by darkroom related errors?

A. 200

B. 20

C. 400

D. 40

C. Survey meter

Which is NOT considered a personal dose monitor?

A. TLD badge

B. Film badge

C. Survey meter

D. Pen dosimeter

C. Neutron

Which is NOT produced during ionization of matters?

A. Positive ions

B. Ion pair

C. Neutron

D. Electrons

D. Medical exposure

Which is NOT considered to determine the dose response relationship for regulatory control of radiation?

A. Background radiation

B. Public exposure

C. Occupational exposure

D. Medical exposure

D. Be used for extremities procedure

Bite light emitting intensifying screen should

A. Need an exposure reduction of 10 kVp

B. Need an exposure reduction of 10 mAs

C. Be used with blue sensitive film

D. Be used for extremities procedure

C. 30

What will be the power rating (kW) of an x-ray unit that is operational at 300 kV, 100 mA at 0.1 s?

A. 300

B. 3

C. 30

D. 150

D. Sievert

Which of the following is the SI unit for dose equivalent?

A. Gray

B. Becquerel

C. Coulomb/kg

D. Sievert

B. Remnant

Which type of x-ray is emitted thru the patient and interacts with the image receptor?

A. Leakage

B. Remnant

C. Scatter

D. Primary

c. Energy

Which will be greater for green light compared to red light?

a. Mass

b. Charge

c. Energy

d. Wavelength

d. Radiation worker

Who must NOT hold the patient during diagnostic x-ray producers?

a. Companion of patient

b. Other patients

c. Other hospital staff

d. Radiation worker

a. Doubled

What will happen to the x-ray output if the kVp is increased by 15% and SID and Mas remain the same?

a. Doubled

b. Halved

c. Increased by 15%

d. Decreased by 15%

c. Cataract

Which has been shown to be produced by interventional x-rays?

a. Leukemia

b. Lifespan shortening

c. Cataract

d. Organ atrophy

d. 150

What will be the mAs of an x-ray machine that is set at 200 A and ¾ seconds?

a. 15

b. 75

c. 300

d. 150

c. 0.1

a 22 watt light bulb is operate at 220 volts. What is the current flowing in A?

a. 0.01

b. 10

c. 0.1

d. 1

c. Is increased if Ma is INCREASED

Which is NOT true regarding exposure time when taking radiographs?

a. Is increased if Ma is DECREASED

b. Is increased if grid is used

c. Is increased if Ma is INCREASED

d. Is decreased if kVp is increased

b. Tissues with high proliferation rate are radiosensitive

Which is NOT a true statement about cell radio sensitivity.

a. Precursor cells are radiosensitive and mature cells are radio-resistant

b. Tissues with high proliferation rate are radiosensitive

c. Tissues with high metabolic rate are radio-resistant

d. Younger tissues and organs are radiosensitive

c. Once a year

What is the recommended frequency of testing lead rubber aprons?

a. When cracks are suspected

b. Every 6 months

c. Once a year

d. Monthly

c. Constant potential

which generator will MOST likely deposit highest energy to the anode at the same peak voltage?

a. High frequency

b. Three phase

c. Constant potential

d. Single phase

b. 10

What is the tolerance limit in percent of the x-ray beam exposure linearity test?

a. 20

b. 10

c. 5

d. 50

a. Pair production

For this type of interaction, x-ray interacts with the nuclear static field causing x-ray to disappear.

a. Pair production

b. Coherent scatter

c. Compton scatter

d. Photoelectric effect

a. Patient thickness

Which will LEAST likely control the patient exposure during fluoroscopy?

a. Patient thickness

b. Exposure

c. Grid ratio

d. Tube voltage

d. Image intensifier

Which part of x-ray equipment is used to increase quantity of electrical output during fluoroscopy?

a. TV monitor

b. Digital to analogue converter

c. X-ray table

d. Image intensifier

b. 100

The most likely tube current in Ma is ________

a. 0.4

b. 100

c. 40

d. 4

d. An electromagnetic switch

What is relay in x-ray machine?

a. A replacement of floor covering

b. A competitive sport event

c. An x-ray tube housing

d. An electromagnetic switch

a. 30 cm

Which will get the highest entrance doses for patient thickness?

a. 30 cm

b. 10 cm

c. 20 cm

d. 5 in

d. Dose response relationships

Which is used to predict the responses to radiation exposures?

a. Dosimeter

b. Dose fractionation

c. Radiation protection measures

d. Dose response relationships

a. Moderate

The principal interest in diagnostic imaging is to estimate the biologic effect at _____ doses.

a. Moderate

b. Very high

c. Very low

d. Very low very high

a. 500 mA

Which of the following will be used during a chest x-ray examination?

a. 500 mA

b. 4 mm al filtration

c. 60 kV

d. 1mm focus

c. Atomic number of target

The energy produced by the characteristic x-ray is determined by the _______.

a. Orientation of target

b. Electric binding energy

c. Atomic number of target

d. Atomic number of filter

c. 125

The radiology department set a 5 percent reject standard. If there are 2500 films processed in one month, what will be the maximum number of reject films allowed?

a. 250

b. 150

c. 125

d. 300

b. Tube current

Which will LEAST effect the average photon energy of an x-ray beam?

a. Beam filtration

b. Tube current

c. Tube voltage

d. Tube waveform

c. Testes

What organ will be damage by radiation leading to sterility?

a. Breast

b. Thyroid

c. Testes

d. Marrow

b. Occupy factor

Which refers to a fraction of time that any given room area is stayed by a person?

a. Use factor

b. Occupy factor

c. Attenuating factor

d. Work load

b. Photoelectric effect

What interaction is MOST likely to occur for an keV photon incident on fatty breast tissue?

a. Pair production

b. Photoelectric effect

c. Compton scattering

d. Coherent scattering

c. Water

Which is NOT considered a macromolecule?

a. Amino Acids

b. Proteins

c. Water

d. Lipids

a. Neutron

The addition of which particle to an atom creates a new one?

a. Neutron

b. Electron

c. Proton

d. Bets

b. 0.5

Scatter x-ray is 0.1 percent of the primary x-ray at a distance of 100 cm from source. How much scatter ( in Mr ) WILL BE PRODUCED IF THE PRIMARY X-RAY WAS MEASURED TO BE 500 MR?

a. 50

b. 0.5

c. 20

d. 2

d. Review his work exposure with the radiation protection officer to assess conditions

The radiologic technologist observed that his personal dose monitor showed a reading of 20 mSv in 10 months only. What will he do so as not to exceed the dose limit in 1 year?

a. Continue work in the radiation area since the annual dose is 50 mSv and not 20 mSv

b. Request to be transferred to a non-radiation work area

c. Ask the management for a hazard pay increase

d. Review his work exposure with the radiation protection officer to assess conditions

d. Shielding

Which is closely related to the half value layer (HVL) concept in radiation protection principle?

a. Exposure

b. Distance

c. Time

d. Shielding

c. 1/4

If the radiologist will increase his distance from a fluoroscopic equipment from 1m to 2m, what will be the radiation dose reduction?

a. 1/8

b. 1/3

c. 1/4

d. 1/5

b. Light

Photoconductors convert x-ray energy into this.

a. Charge

b. Light

c. Voltage

d. Heat

a. Shielding

Which is closely related to the half value layer (HVL) concept in radiation protection principle?

a. Shielding

b. Exposure

c. Time

d. Distance

c. 130

What is the recommended distance in cm of the safelight above the workbench using a standard safelight?

a. 100

b. 75

c. 130

d. 150

b. Internally scattered x-ray

In pelvic radiography which will PRIMARILY contribute to the radiation exposure to the shielded female gonads?

a. X-ray scatter from nearly objects

b. Internally scattered x-ray

c. Secondary scatter electrons

d. Leakage x-ray and air filtration

a. Transform into matter

Which of the following items is TRUE to energy?

a. Transform into matter

b. Measured in Rad

c. Created but not destroyed

d. Destroyed but not created

b. Visible light

What type of radiation is emitted and measured using TLD system?

a. Microwave

b. Visible light

c. Ultraviolet

d. Radio wave

d. Developer

Which part in the processing tank is most important for replenishment?

a. Fixer

b. Water

c. Dryer

d. Developer

b. Sterility

which is NOT an example of a late effect of radiation?

a. Genetic damage

b. Sterility

c. Malignancy

d. Leukemia

c. Double phase

Which is NOT a type of x-ray generator

a. Six pulse

b. High frequency

c. Double phase

d. Single phase

d. 100 mR in 1 hr at 100 cm

What is the tube leakage requirement value for diagnostic x-ray machine?

a. 100 mR in 1 hr at 180 cm

b. 100 mR/hr at 100 cm

c. 100 mR/hr at 180 cm

d. 100 mR in 1 hr at 100 cm

b. Cataract

Which of the following biological effects will exhibit a threshold type of radiation dose-response relationship?

a. Lung cancer

b. Cataract

c. Leukemia

d. Teratogenesis

b. Semiconductors

Choose the materials that restricts the flow of current in one direction but allow to pass in another direction.

a. Insulators

b. Semiconductors

c. Superconductors

d. Conductors

b. 62.4

Convert 1040 m/s to km/minutes.

a. 6.24

b. 62.4

c. 624

d. 6240

d. 6,600 W

What is the power of an x-ray unit that draws 30A at 220 volts?

a. 66 W

b. 6.6 W

c. 660 W

d. 6,600 W

d. X-ray film

Which is NOT a part of an automatic film processor?

a. Developer section

b. Fixer section

c. Processor dryer

d. X-ray film

b. Photon

Which is NOT considered part of an atom?

a. Proton

b. Photon

c. Neutron

d. Electron

b. Time

What is the unit of s?

a. Frequency

b. Time

c. Dose

d. Velocity

c. Insulator

What type of materials are rubber and plastics categorized?

a. Conductor

b. Semiconductor

c. Insulator

d. Superconductor