window


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window

 [win´do]
a circumscribed opening in a plane surface; called also fenestra.
aortic window a radiolucent region below the aortic arch, formed by the bifurcation of the trachea, visible in the left anterior oblique radiograph of the heart and great vessels.
window of cochlea (cochlear window) round window.
oval window an oval opening in the inner wall of the middle ear, which is closed by the stapes; called also vestibular window and fenestra vestibuli.
round window a round opening in the middle ear covered by the secondary tympanic membrane; called also cochlear window and fenestra cochleae.
vestibular window (window of vestibule) oval window.

win·dow

(win'dō),
1.
See also: CT number, window level, window width. Synonym(s): fenestra
2. Any opening in space or time, particularly a critical interval within which a given event must, or cannot, occur.
See also: CT number, window level, window width.
3. computed tomography the range of CT numbers (in Hounsfield units) across which all shades of the gray scale are distributed in a given image so as to emphasize slight differences in x-ray absorption coefficients between tissues of similar density (for example, mediastinal soft tissues).
See also: CT number, window level, window width.

window

/win·dow/ (win´do)
1. a circumscribed opening in a plane surface.
2. the voltage limits that determine which pulses will be allowed to pass on.

aortic window  a transparent region below the aortic arch, formed by the bifurcation of the trachea, visible in the left anterior oblique radiograph of the heart and great vessels.
oval window  fenestra vestibuli.
round window  fenestra cochleae.

window

Etymology: AS, wind, air, owe, eye
1 a surgically created opening in the surface of a structure or an anatomically occurring opening in the surface or between the chambers of a structure.
2 a specific time period during which a phenomenon can be observed, a reaction monitored, or a procedure initiated.
adjective Referring to an interruption in time or space
noun An interruption in time or space
verb To create an interruption in space
Cytology A narrow, slit-like clear space between 2 moulded mesothelial cells, which may be joined to each other by 'articulations'
Imaging noun An interval of photon energies used in a scintillation counter—gamma-ray detector; the so-called ‘pulse height analyser’ rejects any photon energy falling outside of the window—and is thus not counted
verb To adjust a field for optimal visualisation by an imaging modality
Physiology An opening in a biologic membrane, through which solutes may be transported
Surgery A point of an abscess in closest contact with the abdominal wall—or any accessible skin surface without an intervening visceral organ, which can be opened for safe drainage

window

adjective Referring to an interruption in time or space. See Core window, Fertilization window, Round window, Square window, Therapeutic window Radiology An interval of photon energies used in a scintillation counter–gamma-ray detector; the so-called 'pulse height analyzer' rejects any photon energy falling outside of the window–and is thus not counted SurgeryA region of an abscess in closest contact with the abdominal wall–or any accessible skin surface without an intervening visceral organ, which can be opened for relatively safe drainage.

fe·nes·tra

, pl. fenestrae (fĕ-nes'tră, -trē)
1. An anatomic aperture, often closed by a membrane.
2. An opening left in a cast or other form of fixed dressing to permit access to a wound or inspection of the part.
3. The opening in one of the blades of an obstetric forceps.
4. A lateral opening in the sheath of an endoscopic instrument that allows lateral viewing or operative maneuvering through the sheath.
5. Openings in the wall of a tube, catheter, or trocar designed to promote better flow of air or fluids.
Synonym(s): window.
[L. window]

win·dow

(win'dō)
1. Synonym(s): fenestra.
2. Any opening in space or time, particularly a critical interval within which a given event must, or cannot, occur.
3. In computed tomography, range of CT numbers (expressed in Hounsfield units) across which all shades of the gray scale are distributed in a given image so as to emphasize slight differences in x-ray absorption coefficients between tissues of similar density (e.g., mediastinal soft tissues).

window

a circumscribed opening in a plane surface.

cochlear window, fenestra cochleae
an aperture between the tympanic cavity of the middle ear and the cochlea of the internal ear; covered by the secondary tympanic membrane. Called also round window.
oval window
an oval opening in the inner wall of the middle ear, which is closed by the stapes; called also fenestra vestibuli.
round window
see cochlear window (above).

Patient discussion about window

Q. what is the window phase for HIV?

A. The 'window' period for HIV infection describes the strong immune defense that reduces the number of viral particles in the blood stream, marking the start of the infection's clinical latency stage. Clinical latency can vary between two weeks and 20 years. During this early phase of infection, HIV is active within lymphoid organs, where large amounts of virus become trapped in the follicular dendritic cells. The surrounding tissues that are rich in CD4+ T cells may also become infected, and viral particles accumulate both in infected cells and as free virus. Individuals who are in this phase are still infectious.

More discussions about window
References in classic literature ?
A few clouds, floating high upward, caught some of the earliest light, and threw down its golden gleam on the windows of all the houses in the street, not forgetting the House of the Seven Gables, which--many such sunrises as it had witnessed--looked cheerfully at the present one.
At first Mary thought that there were no lights at all in the windows, but as she got out of the carriage she saw that one room in a corner upstairs showed a dull glow.
She turned them over one by one, to satisfy herself that nothing she wanted had been forgotten, and returned once more to her post of observation by the window.
He at once found himself in Africa, under the window of the princess, and fell asleep out of sheer weariness.
They sat side by side outside the window, whispering and listening.
I had been at the window somewhat less than half an hour, when I saw something coming out of the Count's window.
With a queer feeling of impersonal interest I turned my desk chair to the window, sat down, and stared at the blackened country, and particularly at the three gigantic black things that were going to and fro in the glare about the sand pits.
The count placed himself between Caderousse and the window, thus cutting off from the thief his only chance of retreat.
Perhaps then he pays a visit every night to that particular window," I suggested.
Growing dawn had already turned the window panes from black to gray when Sir Walter got abruptly to his feet.
When she was twelve years old, the enchantress shut her into a tower, which lay in a forest, and had neither stairs nor door, but quite at the top was a little window.
Up here also the shutters were tightly closed, the ventilation being perfunctorily done, for this day at least, by opening the hall-window in front and an upper window behind.