Final; State of Ohio Regulations

Question 1

This is no less than 18cm if operable above 50kVp or 10cm if operable at 50kVp

Answer 1

source to skin distance of intraoral dental equipment

Question 2

X-ray field at the minimum SSD shall be containable in a circle having a diameter of no more than what if operable at or above 50kVp

Answer 2

7cm

Question 3

A means shall be provided to terminate exposure at which four qualities of the image receptor

Answer 3

time interval
product of current and time
number of pulses
radiation exposure

Question 4

The operator shall be able to terminate the exposure at any during during an exposure of greater than what time

Answer 4

one-half second

Question 5

The kVp accuracy shall be within +/- what percentage of the indicated value

Answer 5

10

Question 6

For manual exposures, the accuracy of the timing device shall be within +/- what percentage of the indicated setting

Answer 6

10

Question 7

Visual indication shall be provided whenever x-rays are produces; certified equipment also shall prove what to the operator while x-rays are produced or on termination of exposure

Answer 7

audible indication

Question 8

The coefficient of variation for reproducibility of kVp, timing, and radiation exposure shall not excess what for four consecutive exposures

Answer 8

0.05

Question 9

Intraoral and panoramic units shall be provided with primary barriers at all areas struck with what

Answer 9

the useful beam

Question 10

When intraoral or panoramic units are in adjacent patient occupied rooms or areas, protective barrios shall be provided where

Answer 10

between the rooms or areas

Question 11

Which individuals are permitted to hold any part of the x-ray tube housing, cone, or mechanical support of the x-ray tube during exposure

Answer 11

No individuals!!

Question 12

Each installation shall be provided with a protective berried for the operator or shall be so arranged that the operator stands at a minimum distance of what from the patient and out of the useful beam

Answer 12

six feet

Question 13

During panoramic radiography, when the operator is behind a protective barrier, a viewing system shall be provided large enough and so placed that the operator can see what

Answer 13

the patient without having to leave the protected area during exposure

Question 14

Panoramic radiography; x-ray field shall be limited to the dimensions of what

Answer 14

the slit in the image receptor holder

Question 15

This shall not be used for dental examinations

Answer 15

fluoroscopy

Question 16

Hand-held radiation generating equipment shall be used for what only

Answer 16

intraoral purposes

Question 17

Operators of the hand-held radiation generating equipment shall wear what

Answer 17

a full lead apron of not less than 0.25mm lead equivalent

Question 18

This shall be in place during all hand-held radiographic exposures

Answer 18

back scatter shield

Question 19

All operators of hand-held radiation generating equipment shall be provided and wear this on the hand holding the beam limiting device

Answer 19

personnel dosimeter; monitoring the dose to the operators hand

Question 20

Dental equipment with a nominal fixed kVp of less than this shall not be used to make diagnostic radiographs of human beings

Answer 20

50

Question 21

What did the NCRP #145 report released in Dec 2003 state

Answer 21

thyroid collar for children (and for adults)
ADA recommends lead aprons/thyroid collar for all patients
rectangular colimation
use E-speed or faster
rare earth screens for extra oral
shielding design is to be done by qualified expert
film badges for pregnant personnel