| Question | Answer |
| ____ ____ is a measure of the biologic impact or damage of a particular type of radiation | Quality Factor |
| Xrays are electrically neutral, True or False | True |
| OSL use what phosphor | Aluminum Oxide |
| Ring Badges are a film badge, True or False | False they are a type of TLD |
| Radiologists are not considered educators, True or False | False-Radiographers provide education to patients, other health care workers, the general public, and to Rad students |
| Pair production is an interaction is a good example of the conversion of energy into matter and matter back into energy, True or False | True |
| Rems are the most commonly used to measure personnel does, True or False | True |
| Xrays can be focused by lenses, True or False | FALSE |
| Proportional counters are used in labs to detect what ____ and ____ | alpha and beta |
| Specific Ionization (SI) is the number of ion pairs produced per u nit of distance traveled | Radiographer, Nuclear medicine technologists and radiation therapists |
| Atomic number or ____ number represents the # of protons in an atom | Z |
| Xrays ____ all matter including gases | Ionize |
| ASRT stands for | American Society of Radiologic Technologists |
| _____ is the processes of modifying the AC to DC | Rectification |
| Cyrile Houle developed a list of six orientations to learning what are they | 1)Oblivious person,2)Uninvolved person,3)Resistant person,4)Someday person,5)Focused person, and 6)Comprehensive person |
| Genetically significant dose (GSD) is the measure of the genetic exposure to the _____ from diagnostic and other forms of ionizing radiation | population- it indicates the genetic load on the population |
| ____radiation is made up of four particles and does not penetrate matter easily | Alpha |
| Most radioactive materials used in medicine emit gamma rays, True or False | True |
| _____ _____ _____ is an estimated value of exposure by using technical factors and geometry of an exposure, the patient is not needed. | Entrance skin Exposure |
| When calculating the radiation dose from radioactive substances in the body what 5 factors must be known | 1)amount of the radionuclide in curies 2)Physical half life ofthe radionuclide 3)mixture of radiation such as alpha,beta and emitted,4)Fraction ofthe substance in each organ ofthe body 5)the biologic half life of the material |
| Xrays are heterogeneous meaning | they contain many different wavelengths |
| The Curie is larger than the Becquerel, True or False | True |
| Higher Atomic Number elements have a lower binding energy, True or False | False |
| Xrays cause _____ to fluoresce | crystals |
| ______ radiation is made up of 2 protons and 2 neutrons and has a mass of ___amu(atomic mass units) | Alpha, 4 |
| ____ are used in dosimetry and measure biologic effects | Rems |
| Three phase six pulse equipment you get about ____% of your peek voltage | 92% |
| What are the 3 radiologic science professional fields | thicknesses of the parts and atomic number of tissue |
| In Falling load generators the technologist can only set ____ | mAs |
| Secondary Radiation is radiation produced inside an object by interactions between the photon and the atoms inside the object, True or False | TRUE |
| Beta particles can travel approx 3 meters/MeV of energy in air and up to several ______ in tissue | Millimeters |
| _____ and ____ are similar to visible light, radio waves, and microwaves | Xrays and Gamma rays |
| When did Roentgen discover xrays | November 8th 1895 |
| Photons can interact with the entire atom, the nucleus or the electrons, True or False | True |
| Perceived Risk is | what an individual or group thinks the risk is |
| There are 2 different units used to measure radiation one the world uses and one the U.S. uses what are they | smallest packet of energy |
| ______ _____ Radiation is measured indirectly by measuring effect radiation has on a medium such as air or film or crystals | Detection instruments |
| Photodisintegration happens at what voltage level | 10MV |
| Name the 5 interactions of xrays and gamma rays with matter | 1) Photoelectric effect, 2) Compton Scatter, 3) Coherent scatter, 4) Pair production, 5) Photodisintegration |
| Alpha particles are Helium nuclei that have no electrons, True or False | True experiments show that if a gas filled vessel is irradiated for some time that the alpha particles bind with electrons creating neutral helium atoms |
| TS/SNM stands for | Technologist Section/Society of Nuclear Medince |
| What shell in an atom has the highest binding energy | K |
| ____are determined by multiplying the absorbed dose(RAD) times a quality factor and are expressed as dose equivalences | REM |
| Alpha radiation is _______energetic | Mono |
| Positrons are a form of antimatter, True or False | True, they are a positively charged electron, and are not able to exist freely in nature |
| As students we have a duty to ____attempt examinations until ready to do so | Not |
| 1Rad x _____= 1gray | 0.01 |
| What are the 3 common goals of radiologic professional | 1)Promote diagnostic/therapeutic efficacy of exams,2)Provide Radiation protection,3)provide the highest level of patient care possible |
| What are the 6 medical uses of Xrays | 1)Plain Film radiography,2)Fluoroscopy,3)Tomography,4)Mammography,5)Computed radiography,6)Computed tomography |
| REM stands for | Radiation equivalent man |
| X-rays are a form of _______ ______ | electromagnetic Radiation |
| BERT stands for | Background Equivalent Radiation Time |
| Teletherapy means what | irradiation of cancer lesion with the source of radiation distant from the body |
| When a positron interacts with another electron both particles are destroyed while energy equaling half the incident photon is released from the interaction, what is this called | annihilation reaction |
| The problem with single phase rectification is that ______ is not constant | Voltage-It goes from 0 to 100% then back to 0% |
| Beta particle Negatron have a charge of ____ and Positrons have a _____ | -1, +1 |
| Leakage radiation is what | radiation that does not pass thought the window and is of diagnostic use (leaks out of the tube housing) |
| Portions of the primary beam that pass though the patient without interacting are called what | Remnant radiation |
| Actively involved technologists are what | technologists that recognize professional responsibility by practicing radiation protection to the benefit of the patient. They go above and beyond what is “necessary” |
| 2 general classes of instruments are used to detect ionizing radiation what are they | Field survey instruments and Personnel monitors |
| Compton scatter happens at what voltage level | 150kv-3MV |
| An atom that has lost an electron and the electron that is lost are known as ___ ___ | Ion Pairs |
| _____ ____ the photon causes excitation in the over all energy of the atom rather than ionization, the energy is then released in a different direction but has the same energy and wavelength as it went into the atom with. | Coherent Scattering |
| Ionization chambers are not well suited to detecting alpha radiation or low levels of radioactive contamination, True or False | True |
| The badge reports normally take ___ to ___ weeks to arrive back at the department after reaching the vendor | 4-6 |
| A _____ ____ converts flashes of light into electric impulses which can be measured | photomultiplier tube |
| Gamma rays originate from _____ the nucleus | within |
| In TLDs the energy is released when the crystals is heated to several hundre degrees, True or False-True | True |
| Curie and Becquerel measure rate of nuclear disintegration (Decay) of a material, True or False | True |
| The ratio between the # of R and the # of Rads is the _______ | F-Factor |
| Photoelectric effects happen at what KVP lvl | 30-15 |
| ____ ____ is sometimes used instead of Organ Dose | Average Dose |
| KERMA stands for | Kinetic Energy Released in Matter |
| Characteristic photons are also called ____ ____ | Secondary Radiation |
| Changing the number of neutrons in the nucleus of the atom often makes it ______ | Radioactive |
| Gamma radiation is produced outside the nucleus of atoms and are considered monoenergetic | False- they are produced INSIDE the nucleus of atoms |
| Ionization chambers are also known as ____ ____ | cutie pie |
| _____ _____ is only produced in or near the nucleus of the atom and essentially consists of high speed electrons | Beta radiation |
| Protons are Hydrogen nuclei, True or False | True |
| There are 2 ways of creating radiation what are they | Natural and Man made |
| Pocket ionization chambers only measure what 2 types of radiation | Xray and Gamma |
| ______is a general term used to describe the process of emitting radiant energy in the form of waves or particles | Radiation |
| DE(Sv)= | Gray times QF |
| What 2 types of generators are used in mobile equipment | 1)Capacitor-discharge, 2) Battery powered |
| Film badges are most sensitive to an energy of ____keV | 50 |
| The likelihood of photoelectric interactions is approx ___ | Z3 |
| What are the 2 basic rules of Photoelectric interactions | 1) are more likely to occur if the photon’s energy is greater than but close to the binding energy of the electron and 2) have a greater likelihood of occurrence when the electron is more tightly bound in its orbit |
| _____ _____ stores radiation energy by alternation s in its crystalline structure | Thermoluminescent dosimeter |
| Beta particles and positrons are ______energetic | Poly |
| Film badges are sensitive down to about ____ | 10mRem |
| The energy of the photons coming from the tube is approximately ____ the maximum energy set on the control panel | 1/3 |
| 1Rem x _____= 1 sievert | 0.01 |
| SI (Not units of measure) stands for | Specific Ionization |
| Personnel monitoring is preformed in any situation in which an individual is expected to receive 10% of the effective dose equivalent, True or False | True |
| ____ ____ measures the percentage of skin dose found at a certain depth within a patient | Depth Dose |
| What are the 3 components of an xray tube | 1)vacuum,2)Cathode,3) Anode |
| Nuclear power occupational exposure is what | 560mRem |
| Name the 5 desirable characteristics in personnel monitors | 1)portability, 2) Ruggedness, 3) sensitivity, 4) reliability and 5) low cost |
| Scintillation counter is the most sensitive detector to _____ and ____ radiation | xray and gamma |
| ______ Radiation produces positively and negatively charged particles as it passes though matter | Ionizing |
| Fast neutrons 100keV-2Mev has a QF of | 20 |
| ______is the determination by scientific methods of the amount, rate, and distribution of radiation emitted from a source of ionizing radiation | Dosimetry |
| Name the 3 basic types of personnel monitors | Film Badges, Thermoluminescent dosimeters, and pocket ionization chambers |
| Alpha radiation is the ______moving radiation | slowest |
| Curie is defined as ________disintegrations per second of any radioactive substance | 3.7x1010 |
| What are the 2 types of radiation produced | Bremsstrahlung and Characteristic |
| Pocket Ionization chambers that can be held to the light and read are called ____ _____ | self reading dosimeter |
| _____ and _____rays have the highest frequency and the shortest wavelength | Gamma, X |
| The characteristic time of radioactive decay is known as the | Half life- the time it takes a radioactive material to decay to 50% of the original activity |
| Photoelectric effects occurs when the incoming photon excites an inner shell electron to the point of breaking its binding energy and causing it to eject from the atom, True or False | True, the energy needs to be at or slightly above the binding energy of the electron |
| Bremsstrahlung is a type of inelastic interaction, True or False | TRUE |
| ______ _____ is dynamic imaging or the imaging of motion | Fluoroscopic imaging |
| HVL means what | Half value layer-the amount of attenuator necessary to remove half of all the photons in the beam |
| The goal of licensure is | to protect the public from excessive ionizing radiation, not to raise professional standing of practitioners |
| Negatrons are not easily absorbed by other tissues, True or False | False Negatrons are negatively charged electrons |
| Other(visitors) Occupational Exposure is what | 9mRem |
| Brachytherapy means what | short distance irradiation of cancer close to the surface of the body or within the body |
| ____ ____ is a device used to accelerate subatomic particles for radiation therapy, radionuclide production and physics research | Linear Accelarator |
| The total brightness gain(in image intensifiers) is a product of the gain due to making the image smaller times the flux gain, True or False | True |
| Inelastic interactions the total energy is changed after the interaction because some of the kinetic energy is transformed into other types of energy such as xrays, True or False | TRUE |
| _____discovered that certain naturally occurring substances emitted radiation who was he | Becquerel |
| Thermal neutrons less than 10kev has a QF of | 5 |
| Alpha particles have a charge of ____ | +2 |
| Coherent scatter happens at what voltage level | 10-20 kev |
| Resolution is measured in _______ | line pairs per mm (lp/mm) |
| 1 Ci x ______=1 becquerel | 3.7x1010 |
| ____ _____ occus when the incoming photon has energy of above 1.02 MeV | Pair Production |
| Negative pi-meson are what | negative particles produced by linear accelerators |
| Who is the best individuals to protect the public from radiation | Technologists |
| ______ occurs above 10MeV, a high energy photon is absorbed by the nucleus and becomes excited, causing it to become radioactive, to revert to a stable state the nucleus ejects a neutrons, protons, alpha particles, clusters of fragments and or gamma rays | Alpha, Beta, and Gamma |
| Laws are rules of behavior that do not have to be followed , True or False | False-Laws MUST be followed |
| Film badges are made up of a film holder that has a number of ____ over the film in order to estimate the amount and type of radiation making the exposure. | filters |
| Potential energy is the ability to do work , True or False | True |
| When xray or gamma photons in the primary beam pass though matter they undergo ____ or ___ | absorption or scatter |
| _______ ______ uses a sodium iodide or cesium iodide crystal that produces small flashes of light upon exposure to radiation | Scintillation counter |
| Xrays are similar to ____ ____ but are of shorter wavelength | visible light |
| When beta rays travel though a _____ ____ their course is deflected or changed | magnetic field—this suggests that they consist of streams of charged particles (Electrons) |
| Gamma rays are identical to Xrays in 5 ways name them | energy, wavelength, frequency, no mass, no charge |
| LET stands for | Linear Energy Transfer |
| Ethics are rules of behavior that do not have to be followed however, they are based on acceptable behaviors(guidelines), True or False | True |
| Attenuation is the reduction in the number of photons as they pass though matter, True or False | True |
| As Z number decreases the probability of pair production increases, True or False | False, Z number needs to Increase |
| ____ and ____ are units of biological effect | Rem and Sievert |
| Miscellaneous occupational exposure is what | 160mRem |
| If radiation is overused it dose benefit the public health and is beneficial on the bell curve, True or False | False-Overuse is just as bad as under use of radiation. |
| TLD’s are less sensitive than film badges, True or False | False, TLDs are sensitive to about 5 mrem |
| Film badge reports are more accurately called a ___ ____ ____ because it can report on doses from both Film badges and TLDs | Radiation dosimetry report |
| GM counters are most useful in detection rather than measurement of radiation sources, and should not be used for exposure or rate measurements, True or False | True |
| Tungsten has a Z number of ___ and a K shell energy of ___ | 74, 70 |
| Xrays have ____ mass or charge but behave as both ___ and ____ depending on how they are viewed | NO, waves and Particles |
| ____ ____ generators the mA is not constant but is allowed to decrease during the exposure | Falling Load |
| Alternating current is what | electrons that alternate directions in a circuit |
| Absorption and Scatter are methods of ____ | attenuation |
| Characteristic radiation is produced when what happens | an inner shell electron is knocked out and then an outer shell electron drops into its place |
| The atom that has had its inner shell electron ejected because of a photoelectric interaction has its ___ shell electrons drop into the inner shell hole and causes ______ ____ | outer, Characteristic cascade |
| ___ ____ is a process in which a photon is partially absorbed by an outer shell electron being ejected from its atom while the rest of the photon exits the atom. | Compton scatter |
| Intensification screens do what | improves the brightness of the image |
| The electron that is ejected from a Compton Interaction is called a ______ | Compton or Recoil electron |
| Scatter Radiation is produced when xray interacts with matter and have their direction and or energy levels ______ | Change |
| All electromagnetic waves travel with the same velocity what is it | 10x108 meters per second or 186000miles per second |
| _____ _____ is a piece of equipment that emits light when struck by xrays in fluoroscopy | Fluorescent screens |
| Ionization chambers are good at detecting what 3 types of radiation | xrays, gamma rays and high energy beta |
| Barium has a Z number of ___ and a K shell energy of ___ | 56, 33.2 |
| Inner shell electrons have a high binding energy but a low ____ energy | potential |
| Lead has a z number of ___ and a K shell energy of __ | 82, 88.0 |
| Industry occupational exposure is what | 240mRem |
| In single phase rectification the ______ pulses are converted to _____ pulses | Negative, Positive |
| In High frequency generators the incoming 60Hz power is changed to as much as ______Hz power | 6000 |
| The weakest link in fluoroscopic imaging process is the ____ _____ _____ | TV monitor resolution |
| When an Incident photon strikes the nucleus of an atom in pair production, 2 new electrons are produced what are they called | Negatron and Positron |
| Voltage never goes all the way to 0 when using three phase, True or False | |
| Pocket Ionization chambers are not easily damaged by mechanical trauma, True or False | False dropping or bumping it can cause the reading to be incorrect |
| Ionization chambers are sensitive to a wide range of radation energies from about ___ to ____ and are portable | 10 mR to several hundred R |
| Alpha particles can penetrate a piece of paper, True or False | False |
| Xrays have a QF of | 1 |
| _____ ____ is a doubly ionized helium atom | Alpha particle |
| Xrays are polyenergetic meaning | they contain many different energies |
| Every use of radiation involves a potential _____ risk | small |
| When measuring Radioactivity the traditional unit is the ____ and the SI unit is the ____ | Curie, Becquerel |
| F-Factor depends on energy of phton, atomic # , density, and thickness of tissue, True or False | True |
| Specific Ionization is not closely related to LET, True or False | False as SI increases so does LET |
| Xrays do not cause biological changes, True or False | FALSE |
| Ionization chambers used most often to determine ____ ____ | exposure rate |
| Elastic interactions there is no change in the total kinetic energy of the interacting particles as the energy is transferred from one particle to another, True or False | True |
| Xrays have mass and particles associated with it, True or False | False- Xrays have no mass or particle they are considered “pure energy” |
| TLD’s biggest disadvantage is what | They do not provide a permanent record, if the report is incorrect then there is no way to go back and check it again |
| Xray photons travel in what | straight divergent lines isotrophically (in all directions) |
| R or C/kg is a measure of the ionization of air produced by xradiation and gamma radiation below ___ million electron volts | 3MeV |
| Protons have a QF of | 2 |
| ESE stands for | Entrance skin exposure |
| ALARA stands for what | As Low As Reasonably Achievable |
| _____ _____ is the dose received by a particular organ | Organ Dose |
| LET is the radiation absorption rate of an attenuator, True or False | True it is the rate at which energy is deposited in the form of charged particles as it travels though matter |
| Geiger-Mueller counters (GM) determine the amount of radiation by collecting ions in a gas, housed in the detector probe, True or False | True |
| DE(Rem)= | Rad times QF |
| The U.S. uses _____Hertz power | 60 |
| 1 Rad = ___R | 1 |
| Primary Radiation – attenuation = _______ | remnant or exit radiation |
| The absorbed dose of a patient is measured in ____ Traditional and ____ SI | RAD(Radiation Absorbed Dose) and Gray(Gy) |
| The main purpose of falling load generators is to reduce ___ ___ and permit a better use of the ___ ____ | exposure time, tube limits |
| ___ ____ total amount of energy absorbed by a specific mass of tissue | Integral dose |
| Alpha particles have a QF of | 20 |
| The RMS value of High frequency generators is ___ to ___% | 97-98% |
| If a photon changes directions 180 Degrees it is called _____ | Backscatter |
| Licensure is the process by which some competent authority grants permission to a qualified individual or entity to perform certain specified activities, True or False | True |
| What was the first visible unit of measurement for radiation | Skin Erythema Dose |
| The minification gain is calculated by the ratio of the area of the imput phosphor (Screen) to the output screen squared, True or False | TRUE |
| ______ phase is the most commonly used type of rectification | Three |
| The RMS value of a 3phase 12 pulse is ____% | 97 |
| Field survey instruments come in 3 basic types name them | Ionization chambers, Geiger-Mueller detector and the portable scintillation detector |
| Xrays have the ability to pass though matter, True or False | TRUE |
| If radiation is underused it does not benefit the public health and is detrimental on the bell curve, True or False | True |
| Compton scatter is not a hazard to personnel, True or False | False Compton scatter is the largest hazard to personnel |
| OSL stands for | Optically stimulated luminescence dosimeter |
| ____ ____ are the most common and are used to measure whole body irradiation | Film badges |
| Occupational Exposure for medicine is what | 150mRem |
| 1R x ______=1 C/kg | 2.58x10-4 |
| Risk comparison is | the comparison between 2 or more activities |
| A photon is what | |
| Xrays are high LET/SI, True or False | False, Xrays are considered low because they do not give off energy easily but they have high penetrability |
| Naturally occurring alpha particles can travel ___ to ___ cm | 4 to 8 |
| Other worker occupational exposure is what | 180mRem |
| If a procedure has a Risk of +6 should the patient undergo the examination | Yes, when both the risk is low(positive) and the benefit is high(positive) then the patient will benefit the most, however if the Risk is high and the benefit is low (negative) then the patient should not have the exam |
| Radiation dosimetry reports are normally measured in ______ | millirems |
| Brems Radiation is known as _____ _____ | braking radiation |
| For negligence to be proven what 4 things must be satisfied | 1)A duty on the part of the professional exists,2)a breach of duty must be shown,3)the cause must be due to an action on the part of the professional,4)An injury must be proven |
| ____is a device used to detect and measure exposure to radiation | Dosimeter |
| Radiation can be defined as ____in ____ | energy in transit |
| GSD stands for | genetically significant dose |
| Differential absorption is dependent on what 2 things | |
| MCP unknown energy have QF of | 20 |
| One photoelectric interaction may cause many more ion pairs to be formed because why | because 1 ion pair can interact with other atom’s and electrons causing them to become ionized |
| Radiologic technologists are also called what | Radiologic science professionals |
| The luminescence of an OSL is proportional to the amount of _____ _____ received | radiation exposure |
| Alpha particles are produced by _____ ____ primarily of heavy atoms such as plutonium | nuclear disintegration |
| In single phase rectification you are only getting about ____ % of the peak voltage set | 70%,- to find the effective voltage (RMS) you need to multiply the peek by 0.707, and to find the maximum from the effective multiply it by 1.41 |
| Linear Accelarators produces megavoltages of ___ to ___ | 4-40 |
| Personnel monitoring devices are sensitive to Alpha particles, True or False | False |
| Coherent scatter has 3 other known names what are they | Classic, Rayleigh, or Thompson |
| kVp determines the ____energy of the xrays produced and the _____ ability of them | Maximum, penetrating |
| The Radiation produced in the tube is called _____ _____ | Primary Radiation |
| Photons will pass though matter and not interact this is called _____ | Transmission |
| When measuring radiation in air the traditional unit used is the ____ and the SI unit is _____ | roentgen(R), coulombs per kilogram(C/kg) |
| Government occupational exposure is what | 120mRem |
| _____ ____ is the actual measure of radiation received by a portion of the patients skin and is measured by ______ | Skin Dose, TLDs |
| GM counters can detect what 3 types of radation | Alpha , Beta and Gamma, however, not low levels of them |
| The ratio between the number of ______ and the number of ____ is called the f-factor | Roetgens(exposure), Rads(energy transfer) |
| Consumer-Patient Radiation Health and Safety Act of 1981 states | 1)provides standards for accreditation of programs for education individuals responsible for administering radiation to patients,2)licensing standards for radiologic technologists |
| Radiation that is produced in the patient is called | secondary radiation |
| What 4 factors affect attenuation | 1)Atomic Density, 2)Atomic number, 3) Energy of beam is increased, 4)Electons per gram |
| Xrays are the ____ penetrating electromagnetic waves | MOST |
| Entrance skin exposure (ESE) is determined how | without the patient by using technical and geometric factors it decreases with added filtration |
| mAs is the measurement of the number of electrons moving from the ____ to the _____ | cathode to Anode |
| The angle of deflection refers to the degree of change in the photon when it has been scattered, it can range from ___ to ___ degrees | 0 to 180 degrees |
| A Rad is defined as an energy transfer of 100ergs (small unit of energy) per gram of any absorbing material, True or False | True |
| Xrays affect ______ film | photographic |
| 3 types of rectification are | single phase rectification, three phase rectification, and High frequency rectification |
| Beta particles are used in medical treatments, True or False | True-Radioactive phosphorus is used to reduce fluid accumulation in the serosal cavities resulting from metastatic carcinoma |
| Becquerel discovered 3 different types of radiation that were later named by Ernest Rutherford, what are their names | Systeme International (SI) and Traditional (AKA Customary units) |
| ____ ____ ____ have the advantage of providing immediate readings but are not wide in use because they must be recalibrated daily and must be read immediately as the electrical charge inside the dosimeter bleeds off. | Pocket Ionization chambers |
| The F- Factor is another indicator of absorbed dose, True or False | True |
| The electrons, depending on the kVp set can travel at half the speed of light, True or False | TRUE |
| ____ is a nucleus of “heavy hydrogen | with 1 proton and 1 neutron |
| Electrons ejected from photoelectric interactions are known as ______ | photoelectrons or Recoil electrons |
| Root mean square value is what | a measure of the average energy in the beam |
| OSL luminescence occurs when the dosimeter is struck by ____ ____ | laser light |
| _____ _____ determines the amount of radiation by collecting ions in a chamber filled with gas | ionization chamber |
| ______ _____ all of the energy of the incoming photon is totally transferred to the atom. | Photoelectric effect |
| Apathetic technologists are what | technologists who avoid unnecessary radiation only as much as they are compelled to do so by mandate of law or department rules |
| Pair Production happens at what voltage level | 1.02 |
| Safe Medical Device Act of 1991 states | that technologists must report faulty/broken equipment |
| 2 main types of interactions of charged particles with matter are ___ and ____ | elastic and inelastic |
| The activity of a radiation source does not remain constant but tends to decrease with time this is known as | Radioactive Decay |
| Xrays produce secondary and scatter radiation when interacting with ______ | Matter |
| ____is a person who plans an optimal radiation treatment dosage pattern or who establishes a radiation distribution pattern for Radiation therapy | dosimetrist |
| The Becquerel is defined as one decay per second of any radioactive substance, True or False | True |
| ____ ____ is the length of time the substance remains in each organ of the body | Biologic half life |
