| Question Answer | Of the following radiographic projections, which one will show all of the paranasal sinuses? Lateral | Which of the following projections would demonstrate the facial bones and the zygomatic arches? Parietoacanthial (Waters) projection |
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Which projection demonstrates all of the paranasal sinuses quizlet?
The lateral projection
, with the CR entering 1 inch posterior to the outer canthus, demonstrates all the paranasal sinuses.
Which projection will allow for visualization of all paranasal sinuses?
| Question Answer | Which single projection for a paranasal sinus routine provides and image of all four sinus groups? Lateral | If the patient cannot stand/sit for the lateral paranasal sinuses exam, the projection should be taken with _____. horizontal beam |
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Which sinuses are demonstrated in this projection?
A radiograph of a Waters’ projection for sinuses reveals that the alveolar processes of the maxilla are projected over
the maxillary sinuses
. … A radiograph of a SMV reveals the mandible is superimposed over the ethmoid and maxillary sinuses.
Which paranasal sinuses are demonstrated on the SMV projection?
The SMV projection is primarily for demonstrating
the Sphenoid Sinus
, but also for the Ethmoid & Maxillary sinuses.
Which bone contains a paranasal sinus?
One of many small hollow spaces in the bones around the nose. Paranasal sinuses are named after the bones that contain them: frontal (the lower forehead),
maxillary (cheekbones)
, ethmoid (beside the upper nose), and sphenoid (behind the nose).
Which projection best demonstrates maxillary sinuses?
| Question Answer | Which sinus is projected through the mouth on the open-mouth modification of the Waters method? Sphenoidal | Which of the following projections will best demonstrate the maxillary sinuses? Parietoacanthial (waters) |
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Which sinuses are best demonstrated with a Parietoacanthial projection quizlet?
Frontal and ethmoidal sinuses
should be visualized. Which of the following sinus groups is demonstrated with the patient positioned for a Parietoacanthial Projection, Waters Method, with the central ray directed through the patient’s open mouth? Which of the following is the most superior sinus group?
What is the only paranasal sinus not contained within a cranial bone?
What is the only paranasal sinus not contained within a cranial bone? …
ethmoid sinuses
.
Which sinuses are visualized on a lateral sinus view?
The largest sinuses,
the maxillary sinuses
, are paired and are located in the body of each maxilla (see Figs. 22-1 and 22-2). Although the maxillary sinuses appear rectangular in the lateral image, they are approximately pyramidal in shape and have only three walls. The apices are directed inferiorly and laterally.
Which two paranasal sinus groups are better demonstrated with the SMV projection than are the other sinuses?
| Question Answer | Which two paranasal sinus groups are better demonstrated with the SMV projection than are the other sinuses? Ethomoidal and sphenoidal | Which projection of the sinuses demonstrates a symmetric image of the anterior portion of the base of the skull? SMV |
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Which plane or perspective is most often produced for a CT scan of the sinuses?
CT scanning for chronic sinusitis is most often performed in
the coronal plane
. Images in the sagittal plane are useful when surgery of the frontal recess and frontal sinus is going to be performed. Most protocols for CT scanning of the sinuses use a coronal position with slices 2-3 mm in thickness.
At what age are all of the sinuses completely developed?
| 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 |
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Which sinuses develop last and are not fully developed until the teenage years?
The paranasal sinuses develop and enlarge after birth; ethmoid and sphenoid sinuses may not be of significant size until age 3-7 years.
The frontal sinuses
are the last to develop and may not be of significant size until adolescence.
Which sinuses will be demonstrated in the Parietoacanthial transoral view?
Collimation and Central Ray:
Collimated field included the
frontal maxillary, and sphenoid sinuses
, with the maxillary sinuses at the center.
Which paranasal sinus group is superior to the other sinus?
There are
two frontal sinuses
located within the frontal bone of the skull. They are the most superior of the paranasal sinuses, and are triangular in shape. Drainage is via the frontonasal duct. It opens out at the hiatus semilunaris, within the middle meatus of the nasal cavity.
