FujiFilm CR-IR 355RU, Operation Manual

Page: 119 / 126

Z-5
Pr
ecautions for Exposur
e
Z
FCR XC-1 Operation Manual
First Edtion 11.2005 897N0565
1.4 Cautions for “PANTOMO” X-ray
Exposures Using a 10"×12" Cassette
• To obtain properly displayed images, set the
10"×12" cassette in the dedicated cassette
holder of the exposure unit so that the green
mark on top of the cassette is positioned on
the right side when viewed from the X-ray
tube, as illustrated below.
10"x12" cassette
Green mark
Right side
• For image output, the “PANTOMO” X-ray
exposure menu (M2004) takes only an area of
15×30cm from the 10"×12" exposure area.
If you wish an image be output using the entire
10"×12" area, use the “PANTOMO-2:T” (7004)
exposure menu.
1.5 EDR Image Data Analysis
• Image unevenness appearing when the grid
used for exposure is not correctly positioned
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.
• 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.
• 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 intended anatomical
region as usual.
Precautions when using the AUTO MODE.
Mode type Precautions
I 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.
II No special precautions
III Be sure to use the Ba contrast medium.
IV 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 voltage
as usual according to the thickness of
the target.
V As the reading latitude is fixed, it is
necessary to control the tube voltage as
usual according to the thickness of the
target.
VI No special precautions
VII No special precautions