Chapter 1 Flashcards by Richard Ryan

How much work is done if 5 N of force is used to lift a box 3 meters high?

15 J

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An example of how X-rays were used for entertainment or business gain in a dangerous manner was the

Fluoroscopic shoe fitter

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In the SI system the unit of measurement for mass is

Kilogram

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M/S^2 is the unit of measure of

Acceleration

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Propery of an object talkative resists a change in its state of motion is

Inertia

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How much work is done if a force of 20 N is applied to move a patient 100 meters

2000 J

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Upright radiographic examinations can be easily done with a

Wall unit

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E=MC^2 demonstrates the relationship between

Matter and energy

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Who brought attention to the dangers of x-rays?

Thomas Edison

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If it takes 2 minutes to perform 360 J of work, what is the power?

3 W

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Watt is the unit of measurement of

Power

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The metric system is also known as the

SI system international

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Kinetic energy is

Energy being expended

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Weight is not affected by gravitational force. True or False

False

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Is collimation a cardinal principle for minimizing radiation dose?

Collimation is not a cardinal principle. Those are Time, shielding, distance

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Mass does not change with gravitational force, True or False

True

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The device that restricts the X-ray beam to the area of intrest is the

Collimator

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M×A is the formula for finding

Force N=MA

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If 240 J of work is done in 1 minute how much power is consumed.

4 W

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To help cool down the xray tube. The x ray tube housing is filled with

Oil

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The ability to do work is

Energy

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Tube Head Assembly consists of:

X-ray tube stand, collimator, xray tube

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FD is the formula for finding

Work J=FD

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Most widely used tube stand or mount in a hospital setting

Overhead tube assembly

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How much force is needed to move a 20kg box whose acceleration is 5m/S^2?

100 N

Expression of the relative risk to humans of exposure to ionizing radiation.

Effective dose

The formula MV is used to dertermine

Momentum

The floor mount, floor ceiling mountz and overhead tube assembly are types of

Tube stands or mounts

The SI Radiological unit that addresses different biological effects of different types of ionizing radiation is the

What is the momentum of the 20kg box that is traveling 10m/s

200kg-m/s

The standard Radiological unit that quantifies occupational exposure or dose equivalent is the

Rem

If a basketball goes from being stationary to a velocity 18 m/s in 3 seconds what is it's acceleration

6m/s^2

Inertia was first described by

Sir Issac Newton

The first radiograph was taken of Dr. Roentgens wife's

Hand

Electromagnetic, chemical, electrical, and thermal are all types of

Energy

What is the velocity of a javelin that travels 45 meters in 3 seconds

15m/s

In the British system the unit of measurement for length is

Foot

What is the purpose of the mirror inside the collimator

Reflect the light source

Lead shutters are part of the

Collimator

Mass, length, and time are considered.... quantities

Fundamental

When 3 kilograms of water is frozen it produces 3 kilograms of ice

True

Positive electrode

Anode

Screen for pregnancy is a part of the radiographer job

True

The SI equivalent of the rem

Kg-m/s is the unit of measurement of what?

Momentum

When were X-Rays discovered and by whom?

Nov 8, 1895, Dr. Wilhelm Conrad Roentgen

1 rem=

10^-2 SV

The standard Radiological unit that quantifies radiation intensity is the

Roentgen

Energy being stored is

Proteintial energy

A radiation burn from over exposure to x-rays

Radiodermatitis

Exposure times of early radiographs could be

20 min to 2 hrs

The SI equivalent of the Ci

Becquerel

The standard Radiological unit of measurement that quantifies the biological effects of radiation on humans and animals

Rad

Work/time is the formula for

Power W

1 Roentgen=

2.58×10^-4 C/kg

Velocity, acceleration, and work are.... quantities

Derived

Curie

Negative electrode

Cathode

The SI unit of measurement for length

Meter

Where is the anode located typically in an xray tube?

Over the head end of the table

Exposure dose and dose equivalent are....quantities

Radiological

What is the SI equivalent of 3 Ci

1.11×10^11 Bq

1 rad=

10^-2 Gy

1 C/kg=

3876 R

1Gy=

100 rad

1Sv=

100 rem

1 Bq=

2.70e × 10^-11Ci

1 Ci=

3.7 × 10^10 Bq

What does C/kg measure?

Number of electrons liberated by ionization per kg of air.

What is the gray?

The Gy is the unit if measurement for absorbed dose.

What is the Sv

The Sv measures occupational exposure or dose equivalent.

What is the Bq

Quantifies radioactivity of a material

What is the Ci

The standard unit of measurement for radioactivity

Tissue WT of red bone marrow, lung, stomach, colon

0.12

Tissue WT of breasts, adrenals, extrathoracic region,gallbladder, heart, kidneys,lymph nodes, muscle, oral mucosa, pancreas, prostrate, small intestine, spleen, thymus, uterus, cervix, gonads

0.08

WT of bladder, esophagus, liver, thyroid

0.04

WT of bone surface, brain, salivary glands, skin

0.01

What is exposure and how it measured

Exposure is the amount of ionizing photons per kilograms of air. It is measured in C/kg

What is Air KERMA and how is it measured?

Air KERMA is a measure of energy released by ionizing photons per kilogram of air. Measured in C/kg

What is absorbed dose and how is it measured?

Absorbed Dose is the amount of radiation initially absorbed by matter. It is measured by the Gy

What is equivalent dose and how is measured?

Equivalent dose address different sources of radiation and the impact they have using weighting factors. It is measured in Sv

What is effective dose and how is it measured?

The probability of harmful effect from radiation such as cancer, depends upon the Tissue Weighting Factor. It is measured in Sv.

Formula for absorbed dose

Energy(J)/kg

Formula for EqD

D(Absorbed dose) x W,R(Weighting factor of radiation source)

Formula for EfD

D×W,R×W,T(tissue weighting factor)

Formula for velocity

V=Distance/Time

Formula for acceleration

A=(V2-V1)/time

What is the formula for Force

F=Mass×Acceleration

What is the formula for momentum?

Mass×velocity

What is the formula for work?

Force×distance

What is the formula for power?

Work/Time

A radiographer's dosimeter is measured in

mGy

Chapter 1 Flashcards

(92 cards)