Digital Signal Processing Reference
In-Depth Information
PADE TOTAL SHAPE SPECTRA with SINGLETS, DOUBLETS and TRIPLETS : PARTIAL SIGNAL LENGTH N
P
= 800
THREE TYPES of PROSTATE TISSUE : NORMAL GLANDULAR (TOP), NORMAL STROMAL (MIDDLE) and MALIGNANT (BOTTOM)
Absorption Total Shape Spectrum
1000
ν
L
= 500 MHz
B
0
PADE : FPT
(−)
Normal Glandular
800
≈
11.7 T
K = 400, N
P
= 800
600
Converged
400
200
0
4.25
4
3.75
3.5
3.25
3
2.75
2.5
2.25
2
1.75
1.5
1.25
(i) Chemical shift (ppm)
Absorption Total Shape Spectrum
1000
ν
L
= 500 MHz
B
0
PADE : FPT
(−)
K = 400, N
P
= 800
Normal Stromal
800
≈
11.7 T
600
Converged
400
200
0
4.25
4
3.75
3.5
3.25
3
2.75
2.5
2.25
2
1.75
1.5
1.25
(ii) Chemical shift (ppm)
Absorption Total Shape Spectrum
1500
ν
L
= 500 MHz
PADE : FPT
(−)
Malignant
1250
B
0
≈
11.7 T
K = 400, N
P
= 800
1000
Converged
750
500
250
0
4.25
4
3.75
3.5
3.25
3
2.75
2.5
2.25
2
1.75
1.5
1.25
(iii) Chemical shift (ppm)
FIGURE 11.11
Converged Pade absorption total shape spectra at N
P
= 800 for normal glan
dular prostate (panel (i)), normal stromal prostate (panel (ii)) and malignant
prostate (panel (iii)) using in vitro MRS data derived from Ref. [443].
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