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coil designs (continued)

surface gradient coils 50

whole-body gradient coils 49

whole-volume coils 50

collimator designs 93, 94, 101, 102

astigmatic 101

cone-beam 94, 101

converging-hole, 94

fan-beam 94

parallel-hole 94

variable focal 101

see also RF coils, gradient coils

collimator-detector response 98

collimator-detector system 100

Compton scattering 91, 96, 108, 118

computational anatomy 191

computed tomography (CT) 1, 14, 23, 157, 159, 160, 168

CT angiography 33, 34

high-speed 30

spiral CT 23, 31, 33, 169

computer-assisted visualization 168

conductivity distribution 144

cone beam errors 33

conjugate gradient algorithm 99

contrast agents 162

contrast resolution 23

contrast-to-noise ratio 79

convergence 204

convolution kernels 31

convolution methods 98

cryosurgery 177, 178, 194

D

data acquisition 33, 34, 41, 45, 47, 56-59, 62, 63, 70, 94, 101, 112, 116, 125, 134, 157, 158, 175, 187, 193

for optical methods 158

systems 27

three-dimensional 114, 116

data correction 27, 112

data display 33, 63

multi-dimensional 187

three-dimensional 31, 33, 74, 129

data fitting 191, 193

data fusion 188

data interpolation 31

data reduction 33, 187, 193

data sampling 117

data visualization 188

detector systems

arrays 33, 148

efficiency 108

elements 27, 108

noise in 153

ring-based 28

scintillators 27, 92

SPECT 95

transducer development 122

see also scintillation cameras, scintillation crystals

dielectric constant, changes in 143

diffraction integral 123

diffraction tomography 127, 206

diffusion 80-82

anisotropic 82

coefficients 65

measurements 66

diffusion MRI 49, 66

application to strokes 81

diffusion tensor imaging (DTI) 81

digital subtraction angiography (DSA) 13

discrete Fourier transform 40

display 31, 33, 68, 74, 81, 125, 129

three-dimensional 31, 33, 74, 129



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