385
Index
reflection tomography

Doppler ultrasound imaging, 327–329

mathematical methodology, 325–326

physical setup, 325

sonogram, heart, 326–327

surface rendering technique, 331

TOF tomography

description, 324–325

principle, 319

transducers, 311

ultrasound wave detection, 311

volume rendering technique, 331

vs. X-ray imaging, 310

V
Ventricular arrhythmias, 183

Ventricular fibrillation, 184

Ventricular tachycardia (VT), 184

Visual evoked potentials (VEP), 204–205

W
Wavelet-domain analysis

ECG, 193

EEG, 214

EMG, 232–233

Wavelet transform (WT), 129

application

compression, 98

filtering and denoising, 96–98

definition, 86

MATLAB, 99

one-dimensional continuous wavelet
transform (CWT)

of a time signal, 86

Daubechies (dbX) wavelets, 87–88

inverse continuous wavelet transform
(ICWT), 87

Mexican hat mother wavelet, 87

other mother wavelets, 88

one-dimensional discrete wavelet transform
(1-D DWT)

definition, 88–89

on discrete signals, 90–94

synthesis equation, 89

short-time Fourier transform (STFT)

disadvantages, 85

magnitude of DFT of three signals, 79–80

shortcomings of relying only on
magnitude, 81–82
two signals in time, 79–80
two-dimensional discrete wavelet transform
(2-D DWT), 94–96

Wenkebach phenomenon, 187

Wilson placement, 179

Wolf–Parkinson–White (WPW) syndrome, 186,

188–189
X

X-ray imaging

attenuation based, 266–267

characteristic beam delivery design, 262–263

complications, 279

contrast agents usage, 271

and CT imaging

bomedical scanners, 274–276

computer algorithm, 273

description, 273

image-guided interventions, 278–279

registration, 278–279

schematic representation, 273

stereotactic surgeries, 277–278

description, 264–265

diagnostic applications, 276–277

image quality, 271–272

medical radiography setup, 265

quantum noise, 272

radiation dose, 265–266

radiation hazards and epidemiological
effects, 279

radiolucent, 261

radiopaque, 261

relative characteristic radiation spectrum,
263–264

Röntgen experiment, 261

X-ray detection

film imaging, 267–268

fluorescence, 268

fluorescent plate imaging technique, 270

interventional radiology, 268–270

scintillation counters, 270

stenting, 270

Z
Z-disk, 220
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