PNS Radiography Techniques and Views
•
1 like•37 views
Radiography of PNS (Paranasal sinuses), is a Procedure in which we can assess the paranasal sinuses (Maxillary, Frontal, Ethmoid and Sphenoid). Sinusitis, Polyp, mucosal growth. Diverted Nasal septum. Air filled spaces.
Recommended
More Related Content
Similar to PNS Radiography Techniques and Views
Similar to PNS Radiography Techniques and Views (20)
More from SAMEER AHMAD GANAIE
Recently uploaded
Recently uploaded (20)
PNS Radiography Techniques and Views
- 1. RADIOGRAPHY OF PNS Mr. SAMEER AHMAD GANAIE ASSISTANT PROFESSOR COPMS ADESH UNIVERSITY, BATHINDA PUNJAB 151101
- 2. Contents Introduction Patient preparations Indications Contraindications Patient positioning Projections/ Views Technical factors After care
- 4. Introduction X-ray of the sinuses or paranasal sinus radiography is X- ray examination which can be performed with minimal discomfort. Sinuses Sinuses are air – filled spaces (cavities) which are lined with mucous membranes within the skull bones.
- 6. Patient preparations Typically there is no special preparation required: • Female patients who are in the child bearing age capacity, the LMP is asked to ensure the woman is not pregnant . • The radiographer should be notified if the patient has a prosthetic (artificial) eye as it can cast a shadow causing confusion to the sinus area . • Patient need to remove object within the skull/ head e.g. hair clips, earrings.
- 7. Indications • when the patient experiences blocked sinuses due to too much of mucous build up, bacteria and germ which leads to infection and inflammation of the sinuses and is referred to as sinusitis (infection of the sinuses). • Other sinuses related problems such as deviated septum. • Symptoms of other infection in the head area. • To detect injury/ other problem within the sinus. • To determine the size and location of tumor or mass. • To evaluate the patient after sinus surgery.
- 8. Contraindications Pregnant patients Uncooperative patients.
- 9. Patient positioning • Waters view:- • the patient is erect facing the upright detector • the chin is raised until the mento-mandibular line (MML) is perpendicular to the receptor (OML will be 37° from receptor) • ensure patient's head is straight • Lateral view:- • rest the lateral aspect of the patient's head (with the side of interest) against the image detector. • adjust the head into a true lateral position, with the midsagittal plane parallel to the image detector. • for patient's comfort, adjust the patient's body into an oblique position.
- 10. Projections/ Views Routinely three projections/ views are performed which are namely the lateral view, occipital frontal (OF) view and finally the occipital mental (OM) view.
- 11. lateral projection. • cantering point. zygoma (cheek prominence), midway between outer canthus and the external auditory meatus (EAM) • collimation. superior to include frontal sinus. ... • orientation. landscape. • Cassette size: 10x12 • exposure. 70-80 kVp. And 60-70 mas. • SID. 100 cm. • grid. . yes
- 12. Lateral view
- 13. occipitomental view Waters view (also known as the occipitomental view) helps to get a better view of the maxillary sinuses by using X-ray beam angled at 45° to the orbitomeatal line. PNS helps to reduce the weight of the head, aids in voice resonance and air humidification.
- 14. Technical factors • centering point • the beam is exiting at the acanthion • collimation • superior to the skin margins • inferior to include the most inferior aspects of the skull • lateral to include the skin margin • orientation • portrait • cassette size • 10x12 inch • exposure • 75-80 kVp • 20-25 mAs • SID grid • 100 cm yes (this can vary departmentally)
- 15. OM View
- 16. What Happens After The PNS X-ray Procedure? • There is no special instruction or preparation required. • The patient is allowed to leave the department once the examination is over. • The result of the examination will be sent to the requesting doctor.