Digital Signal Processing Reference
In-Depth Information
150
1
150
2
150
3
sa
i
: 5.84
sv
p
: 0.47
sa
i
: 10.53
sv
p
: 1.12
sa
i
: 15.38
sv
p
: 0.36
100
100
100
50
50
50
0
0
0
1
2
3
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5
6
1
2
3
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6
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2
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150
4
150
5
150
6
sa
i
: 6.46
sv
p
: 2.83
sa
i
: 0.12
sv
p
: 0.32
sa
i
: 152.17
sv
p
: 6.57
100
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100
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50
50
0
0
0
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150
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150
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150
9
sa
i
: 25.42
sv
p
: 1.58
sa
i
: 43.54
sv
p
: 3.49
sa
i
: 85.94
sv
p
: 3.01
100
100
100
50
50
50
0
0
0
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Figure 10.5
Segmentation method II: Codebook vectors for fuzzy clustering technique based on
deterministic annealing of the dynamic breast MRI study according to figure 10.4.
sa
i
represents the initial, and
sv
p
the postinitial, time-signal intensity.
method II are not included, since it involves the whole breast and will
be less accurate than method III.
The obtained time-signal intensity curves of enhancing lesions were
plotted and presented to two experienced radiologists who were blinded
to any clinical or mammographic information of the patients. The radi-
ologists were asked to rate the time courses as having a steady, plateau,
or washout shape type I, II, or III, respectively [145]. Their ratings are
the column entries in table 10.1.
The classification of the lesions on the basis of the time-course
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