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| Waters' view ： ウィキペディア英語版 |
Waters' view
Waters' view (also known as the Occipitomental view) is a radiographic view, where an X-ray beam is angled at 45° to the orbitomeatal line. The rays pass from behind the head and are perpendicular to the radiographic plate. It is commonly used to get a better view of the maxillary sinuses. Another variation of the waters according to Merrill's Atlas of Radiographic Positioning and Procedures places the orbitomeatal line at a 37° angle to the image receptor.
==Structures observed==
* Maxillary sinuses
* Frontal sinuses (oblique view)
* Ethmoidal cells
* Sphenoid sinus (through open mouth)
* Odontoid process (if it is just below the mentum, it confirms adequate extension of the head)
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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