FujiFilm FCR XG-1 Operation Manual page 96

Precautions for Exposure
1.5 EDR Image Data Analysis
1 Image unevenness appearing when the grid used for exposure is not correctly posi-
tioned in terms of the bulb, clothes shadow or unevenly radiated X-ray to the X-ray
exposure area can be referred to as the problems occurring during the EDR image
data analysis, which cause unstable density on the image. Avoid such unevenness in
the X-ray exposure area as far as possible.
2 If the target includes such materials as gypsum, denture, etc., stable density may not
be obtained because such materials make it difficult to analyze EDR image data.
In such a case, use the S-Shift/C-Shift or FIX MODE.
3 For multiple exposures with a split IP, make exposure doses on each portion of the IP
as equal as possible (maximum 1.6 times). In other words, for multiple exposures,
submit each portion of the IP to the appropriate exposure dose according to the in-
tended anatomical region as usual.
4 Precautions when using the AUTO MODE.
Auto mode
I
II
III
IV
V
VI
VII
Z-6
Precautions
As this mode is available on the assumption that it extracts information
concerning the skin, secure the positioning so that there is an area other
than the target where the direct X-rays are incident.
No special precautions
Be sure to use the Ba contrast medium.
1 Be sure to secure the positioning so that the X-rays are incident directly
in the area outside the target.
2 As the reading latitude is fixed, it is necessary to control the tube volt-
age as usual according to the thickness of the target.
As the reading latitude is fixed, it is necessary to control the tube voltage
as usual according to the thickness of the target.
No special precautions
No special precautions
010-021-20 09.2001