Which of the following examinations are considered unnecessary radiologic procedures?

focusNode

Inhaltsverzeichnis Show

Ch 11 and 12
Which of the following examinations are considered to be unnecessary radiologic procedure?
Why is direct patient shielding not typically used in CT?
Which of the following are the clinical manifestations that can cause involuntary motion during radiographic procedure quizlet?
When performing a mobile unit radiographic examination the radiographer should stand at what angle to the beam?

Didn't know it?
click below

Knew it?
click below

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Ch 11 and 12

Question	Answer
1. Because the workforce in radiation-related jobs is small compared with the population as a whole, the amount of radiation received by this workforce can be larger than the amount received by the general public without altering the:	Genetically significant dose (GSD
2. Which of the following is a tenet of the ALARA concept?	The radiographer's exposure should be kept as low as reasonably achievable.
3. A facility that employs a pregnant rad tech should provide an additional monitor to be worn at waist level during all radiation procedures. The purpose of this addi¬tional monitor is to ensure that the monthly EqD to the embryo-fetus does not exceed:	0.5 mSv (0.05 rem)
4. Which of the following are radiation sources that can be generated in a diagnostic x-ray room?1. Primary radiation 2. Scatter radiation 3. Leakage radiation	1, 2, and 3
5. During C-arm fluoroscopy, the exposure rate caused by scatter near the entrance surface of the patient (the x-ray tube side) the expo¬sure rate caused by scatter near the exit surface of the patient (the image intensifier side).	Exceeds
6. which dose reduction features should be in working order?1. low-dose fluoroscopy mode& pulsed beam mode 2. Collimation, beam filtration, removable grids, variable optical aperture 3. Roadmapping, time-interval differences,& last-image-hold mode)	1,2, and 3
7. In diagnostic radiology, which of the following radi¬ation sources poses the greatest occupational hazard for the radiographer?	Scattered radiation
8. Which of the following methods and devices reduce(s) the radiographer's exposure during a fluo¬roscopic examination?1. Adequate x-ray beam collimation 2. Control of technical exposure factors 3. Use of a remote control fluoroscopic system	1, 2, and3
9. If the peak energy of the diagnostic x-ray beam is 130kVp, the primary protective barrier generally should consist of at least and extend upward from the floor of the x-ray room when the tube is 5 to 7 feet from the wall in question.	1/16-inch lead, 7 feet
10. Which of the following radiation sources is the con¬trol booth barrier not intended to intercept in a diag¬nostic x-ray room?1. Leakage radiation 2. Primary radiation 3. Scattered radiation	2 only
11. Protective shielding for an uncontrolled area (e.g., a hall or corridor frequented by the general public) must ensure that the maximal EqD for that area is no greater than____per week.	20 microsieverts (2 mrem)
12 T/F Radiographers and non occupationally exposed individuals should never stand in the useful beam to restrain a patient during a radiographic procedure.	true
13. Of the devices listed below, which eliminates non¬useful low-energy photons from the primary beam? 1. Collimator light source 2. Electronic sensors 3. Aluminum filtration	3 only
14. Which of the following is the most effective means of protection from ionizing radiation normally available to the radiographer?	Placing as much distance as possible between oneself and the source of radiation
15. The lead glass window of the control booth barrier in a stationary (fixed) radiographic installation typi¬cally consists of which of the following?	1.5 mm lead equivalent
16. The beam direction factor is also known as the:	Use factor
17. If the intensity of the x-ray is inversely proportional to the square of the distance from the source, how does the intensity of the x -ray beam change when the distance from the source of radiation and a measure¬ment point is quadrupled?	It decreases by a factor of 16 at the new distance
18. Leakage radiation and scatter radiation are forms of:	Secondary radiation
19. Diagnostic x-ray installations must be equipped with:	Radiation-absorbent barriers.
20. What are the main principles used to minimize occupational radiation exposure?	1. Time 2. Distance 3. Shielding
21. Pregnant radiographers can wear an additional moni¬toring device at waist level to ensure that the monthly EqD does not exceed:	0.5 mSv (0.05 rem)
22. During fluoroscopy, which of the following will pro¬vide radiation protection for the radiographer and the radiologist?1. Adequate collimation of the x-ray beam 2. Use of high-speed image receptor systems 3. Use of a cumulative timing device	1,2, and 3
23. Floors of radiation rooms except dental installa¬tions, doors, walls, and ceilings of radiation rooms exposed routinely to the primary beam are given a use factor of:	1
24. If a radiographer stands 1 m from an x-ray tube and is subjected to an exposure rate of 4 mR/h, what will the exposure rate be if the same radiographer moves to a position 2m from the x-ray tube?	1 mR/h
25. If a radiographer moves closer to a source of radia¬tion, the radiation exposure to the radiographer:	Increases significantly
1. As a consequence of their anatomic location, the female reproductive organs receive__________exposure during a given radiographic procedure involving the pelvic region than do male reproductive organs.	3 times more
2. In fluoroscopy, how is the amount of radiation that a patient receives usually estimated?	By measuring the radiation exposure rate at table top and multiplying this by fluoro time
3. Direct patient shielding is not typically used in:	CT
4. In which projection will a young female patient receive a significantly lower dose to her breast tissue during a chest x-ray?	PA
5. How should the radiographer protect a woman who is 3 months pregnant and is suspected of having a c-spine injury from a MVA?	Select smallest exp factors to produce a diagnostically useful image, adequately collimate to only the area of interest, shield the patients lower abdomen and pelvis
6. Pediatric patients require special consideration and appropriate radiation protection because they are more vulnerable to:	Both the late somatic effects and genetic effects of radiation
7. Why is a PA projection used for a juvenile scoliosis examination?	Lower entrance exposure dose to the anterior body surface, thereby significantly reducing the dose to the breast
8. Federal regulations set forth for screening mammography facilities state that the mean dose to the glandular tissue for a 4.5cm compressed breast using a screen-film mammography system should not exceed what?	3 mGy (300 rad) per view
9. Duplicate of	25 in workbook
10. If 500 people were inhabiting the earth and each person received an Eqd of .005Sv (.5 rem) gonadal radiation, the gross genetic effect would be__________ the effect if 50 inhabitants received .05Sv (5 rem) of gonadal radiation.	Identical to
1. Effective communication between the radiographer and the patient depends on what?	Verbal/nonverbal messages are congruent, procedure is explained in simple terms, clear and concise instructions are given; patient is given the opportunity to ask questions which are answered truthfully w/in ethical limits
2. Interslice scatter during a CT scanning procedure results in:	Increase in patient dose
3. Because no localizing light field exists and the field of view is usually moving during a fluoroscopic study:	A shadow shield is not suitable for use
4. What results in an increase in patient dose?	Use of the lowest possible kVp with the highest possible mAs for each exam
5. Duplicate of	2 in book
6. If a cross-table c-spine was taken with an 8:1 ratio grid & appropriate exp factors, then another radiograph is taken using an air gap technique and exp factors comparable to those used with the 8:1 ratio grid, the patient dose is:	About the same
7. The skin and gonads of the patient receive a "double-dose" of x-radiation:	Whenever a repeat radiograph occurs as a consequence of human or mechanical error
8. The benefits of a repeat analysis program include:
9. The exposure of the fetus to radiation arising from diagnostic procedures:	Would rarely be cause, by itself, for terminating a pregnancy
10. When an person of childbearing age undergoes a diagnostic procedure, gonadal shielding should be used to protect the reproductive organs from exposure:	When the reproductive organs are or w/in 5cm of the beam; unless shielding will compromise the diagnostic value of the exam
11. What device is most often used to assess skin doses?	Thermoluminescent dosimeters
12. The Image Gently campaign advocates lowering patient dose by:	Child-sizing the kV and mA; scanning only the indicated area; removing multiphase scans from pediatric protocols
13. In computed tomography, which factors affect patient dose?	Changes in noise level; pixel size; slice thickness
14. If 75% of the acive bone marrow were in the useful beam during a procedure, and were to receive an average absorbed dose of .4mGy (40mrad), what would the mean marrow dose be?	.3mGy (30mrad)
15. The actual dose delivered during a computed tomography scanning procedure depends on the:	Type of scanner being used; radiation technical exp factors selected
16. Digital mammography units with the ability to enhance contrast w/image gray level manipulation offers improvement for:	Patients with dense breasts
17. To ensure a diagnostic image w/minimal patient dose, the technique chosen must ensure:	Adequate radiographic density; an adequate amount of contrast between adjacent tissue densities; sufficient penetration of the area of interest
18. If a radiographic procedure will cause pain, discomfort, or any strange sensations, the patient:	Must be informed before the procedure begins, but the radiographer shouldn't overempasize this aspect of the exam
19. The product of x-ray electron tube current & the amount of time in seconds during which the x-ray beam is activated results in:	mAs
20. Negelecting to use standardized technique charts when AEC isn't used necessitates estimating the technical exp factors, which may result in:	Poor-quality images; repeat exams; unnecessary exp for the patient
21. Duplicate of	3 in book
22. From a radiation protection point of view, the goal of CT imaging should be to obtain the best possible image while delivering:	An acceptable level of ionizing radiation to the patient
23. CT scanning is considered a relatively high-radiation exposure diagnostic procedure because of increasing use of:	Multislice spiral CT scanners using small slice thickness
24. If a pregnant patient is inadvertently irradiated, which medical professional should determine fetal dose?	Radiologic physicist
25. What radiographic procedures are considered unnecessary?	Chest x-ray exam as part of a preemployment physical; chest x-ray exam for mass screening for TB; whole body multislice spiral CT scanning
1. Although the radiographer and other diagnostic imaging personnel are allowed to absorb more radia¬tion than the general public, the ________ received must be minimized whenever possible.	equivalent dose
2. ________radiation poses the greatest occupational hazard in diagnostic radiology.	Scattered
3. Correct radiographic film processing techniques lead to a________in the num¬ber of repeat examinations required, with a resultant in exposure to the radiographer.	decrease, reduction
4. After receiving radiation safety counseling, a pregnant tech must read and sign a form acknowledging that she has received counseling and understands the ways to implement appropriate measures to ensure the ________of the embryo¬-fetus.	safety
5. If a declared-pregnant radiographer is reassigned to a lower-radiation exposure risk area, other unknowing potentially pregnant radiographers can be subject to ________risk.	increased
6.________the length of time spent in a room where x-radiation is produced reduces occupational exposure.	Shortening
7. The most effective means of protection from ionizingradiation is________	distance
8. Structural barriers such as walls and doors in an x-ray room provide radiation________for both imaging department personnel and the general public.
9. Accessory protective shielding includes-________, ________,and________made of lead-impregnated vinyl.
10. No one should touch the tube________ or________cables while a radiographic exposure IS In progress.	housing, high-tension
11. When high-speed IR systems are used, smaller radiographic exposure (less milliamperage) is required, which results in fewer x-ray photons being available to produce________. Because of this reduction in _____ ___personnel expo¬sure is decreased.	Compton scatter, Compton scatter
12. It is imperative that the EqD to the embryo-fetus from occupational exposure of the mother not exceed the NCRP-recommended monthly EqD limit of________mSv (________rem) or a limit of ________mSv (________ rem) during the entire pregnancy.	0.5, 0.05, 5, 0.5
13. Maternity aprons consist of________lead equivalent over their entire length and width and also have an extra________lead equivalent pJotec¬tive panel that runs transversely across the width of the apron to provide added safety for the embryo-fetus.	0.5mm, lmm
14. Shortening the length of_____ in a room where x-radiation is, standing at the greatest_____possible from an x-ray beam, and using radiation absorbent____material between the radiation worker and the source of radiation all reduce exposure.	time, distance, shielding
15. When the distance is doubled, the radiation at the new location spans an area________times larger than the original area. However, because the same amount of radiation is covering a larger area, the intensity decreases by a factor of________	four, four
16. Primary protective barriers are located________to the undeflected line of travel of the x -ray beam.	perpendicular
17. If the peak energy of the x-ray beam is 130kVp, the primary protective barrier in a typical installation consists of________lead and extends_____feet (____ m) upward from the floor of the x-ray room when the x-ray tube is 5 to 7 feet from the wall	1/16 inch, 7, 2.1
18. In a typical diagnostic x-ray installation, the second¬ary barrier consists of________lead.	2inch
19. During fluoroscopy and x-ray special procedures, a neck and thyroid shield can guard the thyroid area of occupationally exposed people. It should be________lead equivalent.	0.5mm
20. To ensure protection from________radiation emanating from the patient during a fluo¬roscopic examination, the radiographer should stand as far from the________as is practical and should move closer to the patient only when ________is required.	scattered, patient, assistance
21. Protective lead gloves of at least________lead equivalent should be worn whenever the hands must be placed near the fluoroscopic field.	0.25mm
22. For better visualization of small body parts, C-arm fluoroscopes have the capability to ________the Image.	magnify
23. A________protective apron is recom¬mended to protect personnel who must move around the x-ray room during a fluoroscopic examination.	wraparound
24. The radiographer should attempt to stand at________( ____ degrees) to the x-ray beam-scattering object (the patient) line; this is the place where the _______amount of scattered radiation is received.	right angles, 90, least
25. In________imaging, because the image contrast and overall brightness can be manipulated after image acquisition, the need for almost all retakes resulting from improper technique selection is eliminated.	routine

Which of the following examinations are considered to be unnecessary radiologic procedure?

What exams are considered to be unnecessary radiologic procedures? Chest X-ray as part of a pre-employment physical. Whole-body multi slice spiral CT screening. Any image that must be performed more than once because of human or mechanical error during the production of the initial image is known as a repeat image.

Why is direct patient shielding not typically used in CT?

Rather it suggests that contact shielding can adversely interfere with the imaging (leading to a repeat test) and, if misplaced or allowed to move during an examination, can actually lead to increased patient radiation exposure, rather than the reverse.

Which of the following are the clinical manifestations that can cause involuntary motion during radiographic procedure quizlet?

Some clinical manifestations that can cause involuntary motion during a radiographic procedure include:.

Chills..

Tremors..

Muscle spasms..

When performing a mobile unit radiographic examination the radiographer should stand at what angle to the beam?

During mobile exams stand atleast 6 feet away and if possible at a 90 degree angle from the radiation source (the patient).

examinations considered unnecessary radiologic procedures

Which of the following examinations are considered unnecessary radiologic procedures?

Ch 11 and 12

Which of the following examinations are considered to be unnecessary radiologic procedure?

Why is direct patient shielding not typically used in CT?

Which of the following are the clinical manifestations that can cause involuntary motion during radiographic procedure quizlet?

When performing a mobile unit radiographic examination the radiographer should stand at what angle to the beam?

zusammenhängende Posts

Which of the following allied health professionals takes health histories performs physical examinations?

Werbung

NEUESTEN NACHRICHTEN

Borderline wer ist schuld

Wer hat mich auf Instagram blockiert

Wie geht es dir was soll ich antworten?

Kind 1 Jahr wie oft Fleisch

Was müssen Sie bei der Beladung von Fahrzeugen zu beachten?

Schütz Die Himmel erzählen die Ehre Gottes

In planning an IS audit, the MOST critical step is the identification of the

Wie lange darf eine Kaution einbehalten werden?

Sarah connor nicht bei voice of germany

Kann man mit dem Fachabitur Jura studieren?

Werbung

Populer

Werbung

Um

Legal

Hilfe

Sozial