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MerillsCh. 22 Nasal
Test Question
Question | Answer |
---|---|
3. At what age are all of the sinuses completely developed | 18 |
4. Largest Sinus is the | Maxillary |
5. Which sinus is located immediately below the sella turcica | Sphenoidal |
6. Patients who are having an exam of the paranasal sinuses should always be examined in the upright position to | (X2) 1.Demonstrate the presence or absence of fluid. 2. Differentiate between fluid and other pathological conditions. |
7. the most effective way to protect the patient from unnecessary radiation during sinus radiography is to use | proper collimation. |
8. for a lateral projection of the paranasal sinuses the central ray is directed | 1 inch posterior to the outer canthus. |
9. Which of the following should be clearly demonstrated on a lateral projection of the paranasal sinus | D all of them. 1.all 4 sinus groups. 2. Superimposed orbital roofs. 3. Superimposed Mandibular rami. |
10. which projection will best demonstrate the frontal and anterior ethmoidal sinuses | PA AXIAL CALDWELL only. |
11. when using the angled grid technique for the PA Axial Caldwell projection of the sinuses, the vertical grid device must be angled | 15 degrees. |
12. Which of the following must be projected below the maxillary sinuses for the parietocacanthial projection waters of the sinuses | Petrous pyramids. |
13. the parietoacantial projection waters of the sinuses requires the orbitomeatal line to be placed how many degrees from the plane of the IR | 37degrees. |
14. which sinus is projected through the mouth on the open-mouth modification of the waters method | sphenoidal. |
15. which of the following projections will best demonstrate the maxillary sinuses | parietoacantial waters only. |
16. for the open-mouth modification of the waters method, the central ray should exit the | acanthion. |
17. the waters drawing | is the one on the left with the chin touching the IR. |
18. to successfully demonstrate the ethmoidal and sphenoidal sinuses on the SMV projection which of the following must occur | (x2) the infraorbitomeatal line must be parallel with the IR. The central ray must be perpendicular to the infraorbitomeatal line and horizontal. |
19. at which level should the central ray enter the base of the skull for the SMV projection of the sinuses | ¾ inch anterior to the level of the EAM. |
20. which projections will demonstrate the ethmoidal sinuses | All of them. |
21. respiration phase for facial bones and sinuses | suspended. |
22. which of the following are included as functions of the sinuses | All of them. |
23. which of the sinuses is developed at birth and visible radiographically | Maxillary. |
24. the two ethmoidal sinuses are located within which bone | Ethmoid. |
25. which reference line is positioned horizontal to ensure proper extension of the head during a lateral projection of the sinuses | IOML. |
26. which reference line is positioned perpendicular to the angled IR for the PA Axial Caldwell of the sinuses | OML |
27. the central ray forms an angle of how many degrees with the OML for the PA Axial Caldwell of the sinuses | 15degrees |
28. which of the following reference lines is placed perpendicular to the IR for a parietcoacanthial waters | MML. |
29. where is the IR centered for the parietoacanthial waters of the sinuses | Acanthion. |
30. where are the petrous ridges seen on a parietoacanthial waters | Inferior to the floor of the maxillary sinuses. |
31. which of the following foramina will be demonstrated in the orbit on a parietoacanthial waters | Rotundum. |
32. the OML forms an angle of how many degrees from the plane of the IR for an open mouth parietocacanthial waters | 37degrees. |
33. the central ray is directed perpendicular to which reference line for the SMV sinuses | IOML. |