FujiFilm FDR ES DR-ID1270, Руководство по эксплуатации

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Z-3
Appendix Z Precautions for Exposure
DR-ID1270 Operation Manual 897N120821E
Z.2 Other Precautions
Z.2.1 Precautions for Exposure of a Subject in Relatively
Large Contrast
1 Exposures using a contrast medium may cause artifacts around it.
2
When exposing a subject with any metal objects implanted, artifacts may appear around them.
3 For exposures with objects of large X-ray absorption, such as lead characters and metals for
measurement, artifacts may appear around them. Place such objects outside a subject.
Z.2.2 Precautions for Flat Panel Sensor
Generally, when performing a high sensitivity exposure shortly after an exposure that the flat
panel sensor excessively receives direct X-ray, the output image may contain image lags of the
previous exposure. This phenomenon rarely occurs and does not occur insofar as normal sensitivity
exposures are performed.
Exposures at longer intervals can reduce occurrences of this phenomenon. Also observe
precautions as follows.
• Continuous high sensitivity exposures to vertebral body part (chest/lumbar spine) should be
performed at longer intervals than normal exposures.
• A high sensitivity exposure shortly after a high-dose exposure should be performed at sufficiently
long interval.
• When performing high-dose exposures repeatedly, do not use collimation of the radiation field,
lead characters or metals for measurement at the same position.
Z.2.3 Precautions for Assuring the Radiation Field
CAUTIONS
● It is important to read the following before using the DR-ID1270 digital detector clinically.
● Do not make the radiation field larger than the size of the flat panel sensor. Especially when
the high tube voltage is set, the radiation field size should not be larger than the subject
unless necessary.
The DR-ID1270 is a digital X-ray detector designed for use both within and outside of a standard
radiographic bucky. Radiation field can be set up to 14” × 17” (DR-ID1271SE/DR-ID1273SE),
17” × 17” (DR-ID1272SE/DR-ID1274SE) or 24 × 30cm (DR-ID1275SE), and this product may be
used with the X-ray equipment in any situation where a film cassette may be used.
The collimator will open up to 14” × 17” (DR-ID1271SE/DR-ID1273SE), 17” × 17” (DR-ID1272SE/
DR-ID1274SE) or 24 × 30cm (DR-ID1275SE), when the DR-ID1270 cassette is inserted in the
bucky tray of the X-ray equipment with positive beam limitation (PBL).
Follow the X-ray system manufacturer’s instructions to assure the indicated field size matches and
does not exceed the actual radiation field size for the available range of SIDs.
Z.2.4 Images Output When the X-ray Shot Switch is Operated
Incorrectly
In case that you press the X-ray shot switch only momentarily after selecting exposure menus,
sufficient X-ray dose may not be achieved. The output image contains image lags of the previous
exposure occasionally.
If this happens, select exposure menus again, and then make an exposure.