provides a thorough examination of the control mechanisms and response activity in the G-I tract with specifics about the electrogastrogram (EGG). On the whole, however, this physiology section does not enhance the material presented in the imaging section and could have been omitted entirely from the book. The âImagingâ section contains a chapter on each of the standard imaging modalitiesâX ray, computed tomography (CT), magnetic resonance (MR) imaging, nuclear medicine (including SPECT), positron emission tomography (PET), and ultrasound as well as several specialty chapters on MR microscopy, electrical impedance tomography, and virtual reality technology. Each of these chapters offers a solid explanation of the components needed for signal/source generation, image detection, and computer processing. Nearly half of the âX-rayâ chapter is devoted to the topic of mammography, with many physiological examples related to the image output. Similarly, about half of the âMR Imagingâ chapter contains two special-topics subsections on functional MRI and chemical shift imaging. The chapter on CT includes an historical account of the data-acquisition geometries of CT scanners and many good figures illustrating the hardware of the system; several of these figures lack dimensions needed for clarification of size. The chapter closes with an overview of image reconstruction principles. The âNuclear Medicineâ chapter likewise covers system design and image reconstruction techniques. An extensive table of radionuclides used in biomedicine is included in the chapter on PET.
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