FujiFilm FCR XG-1, Operation Manual

Page: 92 / 100

Precautions for Exposure
Z-2
010-021-20 09.2001
It is recommended to use Bucky's device to remove scatter lines and obtain a high quality image.
When carrying out exposure using a stationary grid, it is recommended to use a 60 grids/cm grid
with fewer artifacts. However, it is also possible to use 80 grids/cm for 8 x 10" IP.
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1 Precautions for Exposure in the AUTO MODE
In the AUTO MODE, stable image output can be obtained by means of the following.
(1) Radiation field and IP split pattern recognition (PRIEF)
(2) Detailed depiction of the cervical region
(3) EDR image data analysis
However, problems may arise due to differences in multiple diaphragm or scattered rays
of the X-ray equipment. For such problems, contact our service engineer and use such
other recording modes as the SEMI-AUTO MODE or FIX MODE.
1.1 Radiation Field and IP Split Pattern Recognition
1 Be sure that the center (25 × 25mm) of the IP is in the radiation field. If the IP is split for
multiple exposures, each center of the split portions must be covered by the radiation
field.
IP center: 25mm
×
25mm area (black
rectangles in examples above)
located in the center of the IP
Center of the split portion: 25mm
×
25mm area (black
rectangles in examples above) located in the
center of each split portion
( ) ( ) ( ) ( ) ( )
2 Do not set the radiation field extremely small. Be sure to expose X-rays on one thirds
or more of the length of each side of the IP.
3 Be sure that each side of the radiation field does not overlap with the contrast me-
dium. Error will occur if they overlap each other.
4 The IP split pattern recognition is as follows. "S" in PRIEF4S or 1S is a mark showing
that the IP split recognition is possible.
Full-IP exposure Half-split IP (vertical) Half-split IP (horizontal) Quarter-split IP
* For multiple exposures with a split IP, split portion(s) can be left unexposed.
(Only when using PRIEF 4S or 1S.)