The most up-to-the-minute reference on CT, MR, PET, and ultrasound imaging methods As continuing advances in computed tomography, ultrasound, magnetic resonance imaging, and nuclear imaging spur the development of more accurate, safer, and less invasive modalities for gastrointestinal imaging quickly rendering traditional procedures obsolete medical professionals need only look to this definitive step-by-step guide for introduction, clear illustration, and comprehensive coverage of cutting-edge techniques ranging from virtual colonoscopy to dynamic imaging of the pelvic floor.