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Strato X User Manual - Image Works

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USER'S MANUAL<br />

General instructions for use<br />

6.11.1.3 Incorrect film contrast and density<br />

• <strong>Image</strong>s too clear<br />

Normally this indicates that the exposure parameters are too low<br />

with respect to the patient size. Another possible cause is a wrong<br />

film development process, especially if a manual developer is used.<br />

Another possibility is the misalignment of the X-ray beam with<br />

respect to the alignment of the two collimators.<br />

Remedy:<br />

– Increase the exposure parameters<br />

– Check the development process (liquids, temperatures, duration,<br />

etc.)<br />

– Check that the panoramic cassette holder is fully closed in<br />

panoramic position (check that it is really fully pushed against<br />

the mechanical stop)<br />

• <strong>Image</strong>s too dark<br />

Possible cause:<br />

Exposure parameters too high with respect to the patient size.<br />

Remedy:<br />

– Decrease the exposure parameters<br />

– Check that the development process (liquids, temperatures,<br />

duration, etc.).<br />

• <strong>Image</strong> without contrast (flat image)<br />

In the case the film has a poor contrast (flat image), there can be<br />

different causes.<br />

Possible cause<br />

kV value too high<br />

Improper film-screen combination<br />

Edge of the film (non-exposed area)<br />

blurred<br />

Remedy<br />

Decrease the kV value<br />

Check film-screen compatibility<br />

Check the film (expiration date,<br />

storage)<br />

STRATO X (120V) 136<br />

(Rev. 1)

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