Sinuses - Waters view

Adult

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Name of projection	Sinuses - Occipito Mental (Waters)
Area Covered	Maxillary sinuses with inferior aspect visualised free from superimposing alveolar processes and petrous ridges, the inferior orbital rim and an oblique view of the frontal sinuses
Pathology shown	Inflammatory conditions ie: sinusitis, secondary osteomyelitis and sinus polyps
Radiographic Anatomy	Sinuses Radiographic Anatomy
IR Size & Orientation	18 x 24cm Portrait
Film / Screen Combination	Regular (CR and DR as recommended by manufacturer)
Bucky / Grid	Moving or Stationary Grid
Filter	No
Exposure	75 kVp 20 mAs
FFD / SID	100cm
Central Ray	CR perpendicular to IR CR exits at acanthion
Collimation	Collimate closely to area of sinus cavaties
Markers	Inferior and Lateral Marker orientation PA
Shielding	Gonadal (check your department's policy guidelines)
Respiration	Suspended
Positioning	The patient should be seated, facing the upright bucky. The median sagital plane should be perpendicular to the cassette, this is done by checking the external audiatory meatuses (EAM) and the outer canthi of the eyes. The patients mentum of the chin should be touching the upright bucky and sufficiently raised to bring the orbito-meatal baseline or radiographic baseline 45° from horizontal. Clearing the maxillary sinuses of the petrous ridge. CR perpendicular to IR CR exits at acanthion
Critique PACEMAN	Positioning Area Covered Collimation Exposure
Special Notes

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