Parietoacanthial (Waters)

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Last updated 4:44 PM on 10/8/26
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13 Terms

1
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Clinical Indications

Sinusitis or Polyps/cysts

2
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Routine Projections

  • partietoacathial

  • pa axial

  • lateral


3
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SID

100

4
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patient positioning

  • upright

  • patient is facing the bucky

  • 37 looking up, OML

  • MML is perpendicular to IR


5
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term image

waters

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respiration

suspend

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how to prevent rotation

mastoid tips are equidistant

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where is the CR

top of the head

<p>top of the head </p>
9
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anatomy demonstrated

maxillary sinus

petrous ridges are demonstrated below the maxillary sinus

10
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<p>what is the pain take away to know its right </p>

what is the pain take away to know its right

petrous ridges are below the maxillary sinus

11
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<p>how do we know something is wrong </p>

how do we know something is wrong

petrous ridges are in the maxillary sinus

12
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<p>what is wrong with this positioning wise</p>

what is wrong with this positioning wise

MML is not perpendicular to the IR

rotation to the right because the lateral orbital margin on the left is bigger

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<p>how do we correct this</p>

how do we correct this

extend the C spine until the 37 degrees is reached and is perpendicular to the OML

twist the patients head to the left until mastoid tips are equidistant