15. Radiographic projections 1

19/08/2020 2 min
15. Radiographic projections 1

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Episode Synopsis

RADIOGRAPHIC PROJECTIONS:-MAXILLAA. Max sinusB. ZygomaC. Zygomatic archD. Nasal bone – lateral image or lateral projectionWATER’S PROJECTION / OCCIPITO- MENTAL PROJECTIONo Area visualized — all sinus especially MAXILLARY SINUSo Radiolucent seen — zygoma (zygoma is not zygomatic arch)o Zygoma fracture best viewed in waters projectiono If fracture of anterior wall of maxillary sinus — fluid in sinus filled appearance QNo Maxilla fracture.o Projection — from occipital bone to nasal meatus.SUBMENTO VERTEX PROJECTIONo Fracture of cranial base / base of the skullo Inferior border of mandibleo zygomatic arch fractureo Zygomatico maxillar complex fracture visualisable- when done at normal time exposure.o 1/3rd the normal exposure time ie. underexposed — zygomatic arch as jug handle view