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Optimizing Image Quality
Modality Type
Kodak and other CR
(Computed Radiography)
and DR (Digital
Radiography) Systems.
Also Workstations and
imaging devices that output
data to a linear-in- density
contrast curve.
Fuji CR
CT (Computed
Tomography) or MRI
(Magnetic Resonance)
5-4
Table 1. Selection of Parameters by Modality Type
TFT Set
Table No.
(Contrast
Setting)*
WRKSTN2A.w87
FCR302C4.w87
VER693C0.w87
Image
Density
(Dmax)*
1
3.1
2
3.0
3
2.9
4
2.8
2.6
10
2.7
11
2.8
12
2.9
13
3.0
14
3.1
15
3.0, 3.1
5, 7, 8
7F3319
Smooth-
ing Type
5
Select Table number
(contrast) and Dmax in
the pairs shown.
Do not use with Fuji
CR.(See Fuji CR below.)
5
Table number
(contrast) and Dmax
must be chosen in the
pairs shown. The
contrast curves are
approximately linear in
density for most of the
pixel value range, but
become relatively flat at
high (bright) pixel
values. Designed for use
with Fuji CR only.
15
Table 7 provides good
grayscale range in all CT
and MRI studies. Table 5
has less mid-tone
contrast. Table 8 has
more mid-tone contrast.
October 4, 2004
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