Sinuses x ray technique and positioning for diagnosis imaging , brief explanation, if there is error in power point it was my fault in presentation

1. Maw Maw Oo

3. Minimum SID—40 inches (102 cm)
• IR size—18 × 24 cm (8 × 10 inches),
lengthwise
• Grid
• Analog—65 to 75 kV range
• Digital systems—75 to 85 kV range
• AEC not recommended
Center CR to a point midway between outer
canthus and EAM.
To visualize this fluid, allow a short time (at least 5 minutes) for the fluid to settle after patient’s position
has been changed (i.e., from recumbent to erect).
If patient is unable to be placed in the upright position, the image may be obtained with the use of a
horizontal beam

5. Rotation is evident by anterior and posterior separation
of symmetric bilateral structures such as the mandibular
rami and greater wings of the sphenoid. •
Tilt is evident by superior and inferior separation of
symmetric horizontal structures such as the orbital roofs
(plates) and greater wings of sphenoid •

6. • Align CR horizontal, parallel with floor
• Center CR to exit at nasion
Technical Factors
• Minimum SID—40 inches (102 cm)
• IR size—18 × 24 cm (8 × 10 inches),
lengthwise
• Grid
• Analog—70 to 80 kV range
• Digital systems—75 to 85 kV range
• Upright imaging device angled 15° if possible,
CR horizontal
Neck extended to elevate OML 15° from horizontal. A radiolucent support between forehead and upright
imaging device or table may be used to maintain this position. CR remains horizontal.

7. Horizontal
CR horizontal, parallel with floor

9. Technical Factors
• Minimum SID—40 inches (102 cm)
• IR size—18 × 24 cm (8 × 10 inches),
lengthwise
• Grid
• Analog—70 to 80 kV range
• Digital systems—75 to 85 kV range
• AEC not recommended
The head is tilted back slightly so that the patient is
gazing upwards.
The chin is raised until the mentomandibular line is
perpendicular to the IR and the orbitomeatal line is at
an angle of 37 degrees to the IR.
The central ray of the X-ray beam exits at the acanthion.

12. OML forms 37° angle with IR
MML is perpendicularwith mouth closed).
Instruct patient to open mouth by instructing to “drop jaw
without moving head.” (MML is no longer perpendicular.)
• Center IR to CR and to acanthion.