The Bucky slot cover is in place to protect the 1. Patient 2. Radiologist 3. Radiologic Technologist

Used chemical bottles can be recycled:

For testing white light leaks, frequency of test is done every 1. Week 2. Month 3. 6 months 4. As needed

When testing for white light leaks, you are recommended to stay inside the darkroom for minutes while the safelight is switched off?

The recommended distance of facing down safelight from the working bench is approximately cm.

Which of the following are used to check for focal spot size? 1.Star pattern 2.Pinhole camera 3.Slit camera 4. Wire mesh

Which among the following is the most accurate way to test for focal spot size? 1.Star Test pattern 2.Pinhole camera 3.Slit camera 4.Wire mesh

Which of the following are used to test for kVp accuracy? 1. Wisconsin cassette 2. Sussex cassette 3. Ardran-Crookes

The accepted tolerance level for collimation is ±____ % SID

The accepted tolerance level for exposure linearity % ____ > 10ms

The minimum HVL required for 3 phase/high frequency units using 70kVp is about mmAl,

AEC ion sensitivity chambers have to be sensitive within +/- ___ % in the same areas.

What should be used to examine areas that have poor detail?

For x-ray/light beam alignment, which of the following is/are used? 1. 8 coins 2. 4 Paper clips 3. Lead markers 4. Star test

Exposure reproducibility should be maintained within ‡ %

Being a radiation worker, the expected days of life lost is

Acute radiation lethality follows a response relationship.

During this period, the person is free of visible effects.

The Mean Survival Time (MST) for Gl syndrome is days

What is the minimum threshold dose for death to occur for a whole-body exposure?

A pregnant radiographer must have how many ersonnel monitoring device?

The following are the established protocol for radiography of the pregnant patient, EXCEPT:

Radiation are categorized as to primary and secondary radiation. Which of these is considered a primary radiation?

It is the most critical, target molecule in the body that serves as the command and control for cell function.

The following are considered as deterministic effects of radiation exposure, except:

The following describe stochastic effects EXCEPT:

The division wherein the nucleus swells and the DNA becomes more prominent:

The breakdown of protein metabolism produces:

The powerhouse of the cell:

Weekly MPD for occupational exposed persons:

If the quality factor (QF) of ionizing radiation is higher, relative biological effectiveness:

30. A film badge monitoring device used for monitoring of personnel can: 1. record the image of the aluminum or copper filters which are contained in the plastic holder 2. be compared with a control badge by the monitoring company 3. record doses below 10 millirem

Application/s of radiation dose - response relationship:

The sequence of events following high - level radiation exposure leading to death within days or weeks is called the:

The technologist has considerable control over both image quality and patient dose, depending on which materials or methods are selected for each examination. One technique that reduces patient dose and improve image quality at the same time, day is:

Cardinal principles of radiation protection: 1. time 2. distance 3. sheilding

Which of the following statement correctly describes the predicting aspect of the latent period?

Within few months after x - ray was discovered they were being used for medical diagnosis and treatment, resulting in the first visible biologic effects of radiation on humans. Which of the following is an immediate or early effect of radiation?

Sources of unnecessary exposure: 1. annual chest radiograph 2. routine fluoroscopy in person older than 40 years 3. mammography examination in high risk female

In the early 1900's, Bergonie and Tribondeau formulated some theories about the radiosensitivity of biologic tissue. The Law of Bergonie and Tribondeau formulated in part that:

The target theory is a concept for classifying radiation effects in the cellular level. The basis of this theory is that in every cell there is a significant target, if rendered nonfunctional will result in death of cell. Which of the following is that most important molecular target?

The aluminum filtration reduces patient dose by:

The shielding of a typical x-ray room is:

Which of the following has the greater shielding value?

Thermoluminescent dosimeters:

The most means of reducing patient exposure:

Based form the principle of radiation protection under Distance, when the distance is doubled, the intensity is:

In mobile radiography, the radiographer should: 1. Stand at least 6 ft from the source 2. Stand behind a corner, if possible 3. Use low kVp techniques

Barrier classification which includes all the different protective apparels:

Which of the following group of people have higher dose limits?

A sun-burn like reddening of the skin resulting to long exposure to radiation

What is the minimum equivalent of total filtration required for diagnostic x-ray operating above 70 kVp?

What term is used to describe radiation damage that increases the probability of including a late effect but will not increase the severity of the effect (ex. Carcinogenesis, life shortening)?

How many half - value layers of filtration must be added to the primary beam to reduce its intensity to approx 3% of its original value?

It results from maintaining the anode at elevated temperatures for prolonged periods.

It is the unit of energy used to measure the heat capacity of the x-ray tube/unit.

High frequency generator is recommended rather than high voltage generator because of the following reasons EXCEPT:

For what purpose is there a negative electrical charge on the focusing cup?

The function of x-ray tube rating chart

Rectification used:

Part of Cathode assembly 1. Filament 2. Target 3. Focusing cup

Material added to tungsten for construction of a long-lasting filament

The flow of one coulomb per sec in a conductor is equivalent to one

mAs is a unit of

How much of Tc-99 m will remain after 4 physical half-life if the initial activity was 2 mCi?

The radiographic exposure is made at 500 mA; 100 ms the equivalent mAs is?

One disintegration per second of activity is equal to.

The number of Half lives required to reduce the activity to 1/32 of the original amount

Which among these following interaction where ionization occurs

Among the following interactions, which of these does not produce scattered x-ray?

its purpose is to absorb soft x rays and improves the quality of the x ray beam

Pair production produces all of the following except:

At 100 kVp approximately how many % of bremsstrahlung x ray is produced?

A process where an unstable nuclei spontaneously emits radiation to reach a stable state.

Tc 99-, has initial activity of 50mCi after its activity will be 25mCi.

The maximum no. of electrons in the n-shell is?

Refers to the particle that have lower range

The transition of an outer orbital electron to an inner orbital shell produces?

The fundamental unit of the electromagnetic radiation

When fast moving electrons interacts at the nuclear source of a target material its kinetic energy is converted to?

One coulomb of electron charge is equivalent to how many electrons?

The equivalent value of 1mCi in Bq is

For resistor of 5 ohms, 10 ohms, 15 ohms and 20 ohms are connected in a series circuit. Determine the unknown values describe in number 84-87 if the circuit draw 110 volts from an AC source. The total resistance is?

For resistor of 5 ohms, 10 ohms, 15 ohms and 20 ohms are connected in a series circuit. Determine the unknown values describe in number 84-87 if the circuit draw 110 volts from an AC source. The total current is?

For resistor of 5 ohms, 10 ohms, 15 ohms and 20 ohms are connected in a series circuit. Determine the unknown values describe in number 84-87 if the circuit draw 110 volts from an AC source. If the four resistors are connected in a parallel circuit, what is the total resistance?

For resistor of 5 ohms, 10 ohms, 15 ohms and 20 ohms are connected in a series circuit. Determine the unknown values describe in number 84-87 if the circuit draw 110 volts from an AC source. The power generated in the circuit is _____ watt?

Which one of the ff components of the diagnostic x-ray tube is on the positive side of the tube?

A stationary anode will most likely used in which of the following

Which of the following is not a function of the anode?

A fluoroscopic examination at 85 kVp at 4mA, single phase requires a 4mins the number of anode heat units produced would be approximately?

The x-ray emission spectrum principally depends on which of the following

Normally the x-ray emission spectrum contains?

The characteristics x-ray emission spectrum principally depends on which of the following?

The continuous x-ray emission principally depend on which of the following

The x ray emission spectrum represents

The formula for heat unit in a single phase high voltage generator is?

When the mAs is increased the x-ray quantity?

The heel effect most likely to increase when reducing the;

In general xray quantity will increase with?

The thickness of the material required to reduce the intensity of the beam to 1⁄2 of its original value