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NAVEDTRA 14295B Ch17
HM Chapter 17: Radiology
Question | Answer |
---|---|
What is the name of the tube that was discovered in 1895? | Crooke's tube |
characteristics and properties of Xrays are They travel in straight lines at the speed of light • They affect photographic film by producing a hidden | They travel in straight lines at the speed of light,they affect photographic film by producing a hidden image made visible by processing,cause certain substances to fluoresce(glow),irritation of living cells,can cause necrosis of the cells. |
The rule that applies to the principle of radiation safety is? | A good rule is the acronym, ALARA, "As Low As Reasonably Achievable." |
The time setting on the X-Ray machine is measured by using which of the following methods? | The MAS (milliampere per second) controls the exposure time to the patient14 |
The film badge should be placed behind the lead-lined barrier at least what number of feet from the tube head? | 6 |
What are the safety precautions for taking radiographs? | NEVER stand in the path of the central Xray beam during exposure,NEVER hold the X-ray film packet in the patient's mouth during a dental exposure,NEVER hold the tube head or the tube head cylinder,ALWAYS stand behind a lead-lined window. |
Contraindication for chest PA | Rash and streaking |
Which of the following oragns will not be seen in a KUB radiograph? | the liver |
A patient presenting with chronic cervical spine pain should be ordered what type of radiograph? | AP Cervical Spine |
The bisecting angle technique | Use the bisecting-angle technique when paralleling devices are not available; when a patient finds it painful or impossible to close on the bite-block; or when an X-ray is needed when a rubber dam is in place. |
What X-Ray machine settings should you use when exposing a maxillary occlusal radiograph on an adult? | Set the X-ray machine at 10 mA, 90 kVp, and 60 impulses (1 second). |
What vertical angulation setting should you use when exposing a maxillary anterior occlusal radiograph? | +65 |
When exposing a maxillary posterior occlusal radiograph, you should use what vertical angulation setting? | +75 |
When exposing a mandibular anterior occlusal radiograph, what vertical angulation should you use? | -10 |
You should wait what number of seconds between films before inserting another film into the automatic processor? | 15 |
The developer and fixer solutions in the automatic processor should be changed at what minimum frequencies? | every 3 to 4 weeks |
When mounting radiographs, the raised dimple should be facing? | you |
Radiation exposure should be managed by what 4 factors | time, distance, amount, shielding |
What is the form number Radiologic Consultation Request/Report? | SF 519 |