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48 Cards in this Set

  • Front
  • Back

Who discovered X-Rays?

Wilhelm Conrad Roentgen

What year were X-Rays discovered?

1895

How did Wilhelm Conrad Roentgen discover X-Ray?

While using the Crookes tube.

Why is it called an X-Ray?

X is used for the unknown in math.

What is the name of the doctor that took dental xrays in 1895?

Otto walkoff

What are the characteristics of an X-Ray?

a. Travelling in a straight line at the speed of light.


b. causes certain substances to glow


c. Irritates living tissue (may cause necrosis)


d. They affect photographic film by producing a hidden image made visible by processing.

What is the most common type of Xray?

Chest radiograph

General diagnostic radiographers uses what to produce black and white images of anatomy?

Radiation (xray)

Computed tomography uses what kind of Xray unit to obtain slices of smarmy at different levels within the body?

Rotating Xray unit

What controls the exposure time to the patient?

MAS (millampere per second)

What does ALARA mean?

As low as reasonably achievable.

What does MRI stand for?

Magnetic Resonance Imaging.

When taking Xrays always drape the pt in ___ apron and collar to protect_____ system and ____ gland.

Lead; reproductive; thyroid.

Cardiovascular a interventional technologist used sophisticated imaging technologies such as _____ to help guide ___, ____,____ or other tools through the body.

Biplane fluoroscopy; catheters, vena cava filters, stents

Where are badges placed?

In the xray room behind the techs protective lead-lined barrier or at least 6 inches from the tube head.

The surfaces of the dark room are disinfected____.

Daily

What federal law indicates that mammographers must meet stringent educational and experience criteria in order to perform mammographic procedures?

Mammography Quality Standards Act

Prolonged exposure to radiation may result in:

Hair loss, redness and inflammation of the skin, blood count changes, cell atrophy ( wasting away), ulcerations, sterility, genetic damage, cancer, leukemia and death.

How are Xrays produced?

They are produced in the Xray tube head when metal (tungsten) target is bombarded be a stream of electrons.

What are the 4 factors that control the density of an Xray?

*kilo-voltage (kVp)


*exposure time


*milli-amperage (mA)


*target-film distance (TFD)

All workers should be issued what kind of badge?

Environmental Dosimetry Radiation Film Badge.

How often should the Environmental Dosimetry Radiation Film Badge be collected?

6-7 weeks

What factors affect the amount of exposure (dose) a pt receives from the source?

Time, distance and shielding.

____is your friend.

Lead

Should you ask a female pt is she is pregnant or could be pregnant?

Yes always.

What are the 4 major ways to reduce radiation exposure to the pt and workers?

Shielding, time, distance, and amount.

How far should a tech be from the source of an Xray?

At least 6 feet

For personnel who work near a source of radiation there annual total dose limit is:

5000 mRem (5 Rem)

Always stand behind the ________ window or wall for protection.

Lead- lined

______ stand in the path of the xray.


a. Always


b. Never

Never

____ hold the xray film in the patients mouth during a dental radiograph.


a. Never


b. Always

Never

___ hold the tube head during exposure.


a. Always


b. Never

Never

What is the Precious Metals Recovery Program instruction?

Bumedinst 4010.3

What are the 2 precious metals found in xray departments?

Lead and silver

The precious metals recovery program is designated to save _____ money by recycling precious metals and using those funds to offset the cost of supplies for ___ activities.


Department of defense.

Who is authorized to order dental xrays?

Dental officer is the only one authorized.

What organization was created to monitor the use of ionizing radiation?

Nuclear Regulatory Commission (NRC)

How often should the developer and fixer be changed?

At a minimum of once every 3-4 weeks.

______ is the most commonly used method of processing medical and dental radiographs in the Navy.

Automatic processing

How long should you wait between films before inserting another film into the automatic processor?

15 seconds.

What is maximum radiation exposure for non-radiation workers per year?

500 mRem

What are the two sources of illumination in a dark room?

White light and safelight.

What is the distance of the safelight to the work surface so that the corpsman can open cassette and process film?

No less than 4 feet.

What is the length of time unexposed film should be left outside of its protective covering under safelight conditions?

No more than 2 minutes

What test is used to detect white light leakage in the dark room?

Penny test

How long should penny be placed on film?

15 minutes.

What are the 5 basic steps involved in processing Xray films?

Developing, rinsing, fixing, washing and drying.

What Xray exam is indicated for pt that reports to medical with abnormal bowel movements and abdominal pain?

AP projection KUB ( kidney, ureter and bladder)