Мы используем файлы cookie.
Продолжая использовать сайт, вы даете свое согласие на работу с этими файлами.
Waters' view
Другие языки:

Waters' view

Подписчиков: 0, рейтинг: 0
Waters' view
Medical X-Ray imaging PZJ06 nevit.jpg
A Waters' view radiograph showing the paranasal sinuses
Specialty Radiology

Waters' view (also known as the occipitomental view) is a radiographic view of the skull. It is commonly used to get a better view of the maxillary sinuses. 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. Another variation of the waters places the orbitomeatal line at a 37° angle to the image receptor. It is named after the American radiologist Charles Alexander Waters.

Uses

Structures observed

Waters' view can be used to best visualise a number of structures in the skull.

The frontal sinus may not show the frontal sinus in detail.

Interpretation of results

Pathology Observation
None (Normal)
  • Odontoid process lies exactly below mentum.
  • Maxillary sinuses are more radiolucent than orbits.
Maxillary sinusitis
Differentiating pathology in maxillary sinus
  • Maxillary sinus shows radiopacity.
  • Mucous membrane shows thickening.
  • Air-fluid level may be observed if the radiograph is taken in "head-up" position. It is not seen in radiograph taken in lying down position. The concavity of fluid opacity points upwards.
Polyp
  • Maxillary sinus shows radiopacity; which is present despite of the position in which the radiograph is taken.
  • Usually, the radiopacity has convexity pointing upward.
Malignancy
Onhgren's line
  • Sinus is radioopaque.
  • Sometimes, destruction of walls of sinus is seen and is diagnostic of malignancy
  • Distance between antero-lateral wall of maxilla and coronoid process of the mandible is measured. If it is increased on one side, it indicates involvement of infratemporal fossa by the malignancy. This is called Handousa's sign. Prognosis of malignancy is determined by position of tumour on basis Onhgren's line.

Procedure

Method of obtaining Waters' view

Typically, the x-ray beam is angled at 45° to the orbitomeatal line. Another variation of the waters places the orbitomeatal line at a 37° angle to the image receptor, or 30°.

History

Charles Alexander Waters

Waters' view is named after the American radiologist Charles Alexander Waters. It is also known as the occipitomental view.


Новое сообщение