superego according to Freudian theory, one of the basic structures of the personality, it is the partially unconscious area of the mind that contains and enforces people’s values, morals, and basic attitudes that they learned from their parents and society
A quality radiograph is obtained using a 4 inch PID and an exposure time of 3 impulses. The PID was removed and replaced with a 16 inch PID. What should the new exposure time be to maintain image density?
In which of the following conditions would vertical bitewing radiographs be recommended over horizontal bitewing radiograph?a. child with rampant cariesb. adolescent with suspected third molar impactionsc. adult with mal-aligned teethd. adult wih periodontal diseases (bone loss)
When a patients head is in the correct position, a _______ vertical angulation is used when exposing maxillary periapicals and a _______ vertical angulation is used when exposing mandibular periapicalsa. positive, positiveb. negative, negativec. positive, negatived. negative, positive
cutting off the root apex portion of the image on a periapical radiograph results froma. excessive horizontal angulationb. inadequate horizontal angulationc. excessive vertical angulationd. inadequate vertical angulation
Identify an early clinical sign of excessive acute exposure to radiationa. jaundicec. erythemad. bleedinge. loss of haird. all the above
Identify the purpose of the radiation film badgea. to reduce the radiation exposure to the patientb. to protect the radiographer from radiation exposurec. to protect the radiology cubicle from overheatingd. to monitor the radiation exposure to the radiographer
A diagnostic film is produced using 10mA and .45 second. What exposure time is needed to produce the same film at 15 mA?a. 0.25 secondb. 0.30 secondc. 0.45 secondd. 0.50 second
During pregnancy a patienta. should be advised of her legal rights before being irradiatedb. should be warned about possible miscarriage.c. should never be irradiated for dental radiographsd. may be irradiated for dental radiographs by taking the necessary precautions
Identify the reduction in exposure time when changing from D-speed film to E-speed filma. reduce by 1/8b. reduce by 1/4c. reduce by 1/3d. reduce by 1/2
Identify the recommended distance between the safelight and work surfacea. minimum of 1 footb. minimum of 2 feetc. minimum of 7 feetd. minimum of 4 feet
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