By Gregory G. Ginsberg
Clinical Gastrointestinal Endoscopy, 2d variation, via Drs. Gregory G. Ginsberg, Michael L. Kochman, Ian D. Norton, and Christopher J. Gostout, is helping you grasp the most recent endoscopic concepts and accomplish optimum results. See the best way to practice key nuances with procedural movies at www.expertconsult.com as well as 1,000 images, upgraded endoscopic photographs, and anatomical drawings either in print and on-line. Written by means of a few of present day such a lot prestigious experts and with many new and entirely up to date chapters, this source equips you to diagnose and deal with the whole variety of GI issues with cutting-edge assurance of bariatric surgical procedure, healing EUS, device-assisted enteroscopy, image-guided remedy, intramural endotherapy, and lots more and plenty extra.
- Get entire information on a large breadth of subject matters together with anatomy, pathophysiology, and healing administration strategies as well as the newest GI approaches and technologies.
- Advance your wisdom at the quickly evolving kingdom of medical gastrointestinal endoscopy with professional multimedia counsel from a few of ultra-modern such a lot prestigious specialists.
- Master new techniques with updates at the endoscopic administration of bariatric surgical procedure; EUS as a device to direct endoscopic treatments; device-assisted enteroscopy for deep exploration of the small gut; image-guided remedy to aid become aware of melanoma previous; intramural endotherapy together with the recent POEM process; and masses more.
Keep present with either new and rising applied sciences together with the administration of higher gastrointestinal familial adenomatous polyposis syndrome and ampullary tumors; post-bariatric endoscopy and endoscopic remedy; endoluminal bariatric thoughts, and intramural/transmural endoscopy.
- See the best way to practice key strategies step-by-step with endoscopic video clips at www.expertconsult.com, and entry the full textual content, online-only references, and the entire illustrations.
- View recommendations extra essentially with upgraded endoscopic photos and step by step illustrations in so much chapters.
The entire and multimedia source for staying brand new with the most recent know-how and strategies in GI endoscopy
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Additional info for Clinical Gastrointestinal Endoscopy
Once the CCD is read and cleared, it is ready for another exposure. The charge-coupling process—the transfer of charges from pixel to pixel as packets—gives the CCD its name (charge-coupled device). The charges in the furthermost corners of the CCD are moved sequentially through several hundred photosites before they reach the horizontal shift register. In current videoendoscopes, the CCD is exposed, read out, and reexposed 60 to 90 times each second. To maintain image fidelity during these repetitive transfers, it is essential that these charge packets remain intact with no loss or gain in charge quantity in the process of undergoing hundreds of thousands of transfers per second as the CCD is being read out.
Pulling on the wire attached at the 3 o’clock position causes right tip deflection. Pulling the other two wires causes down and left deflection. The endoscopist is able to pull on each of these wires in turn by rotating either the up-and-down or right-and-left angulation knobs. (For simplicity, Fig. , upward and to the right) and allows the endoscopist to sweep the tip of the endoscope in any direction. Bending section Right/left pivot pin Ring Up angulation wire Down angulation wire A Up/down pivot pin Up/down angulation knob End of angulation wire Up/down chain and sprocket Up angulation wire Bending section Down angulation wire B Fig.
The amount of tension in this wire is controlled by rotating a ring at the proximal end of the insertion tube, just below the control section (Fig. 5). When the pull wire in this stiffening system is in the “soft” position, the stiffening system provides no additional stiffness to the insertion tube beyond that provided by the wire mesh and polymer coat. As Fig. 5 illustrates, when the control ring is rotated to one of the “hard” positions, an angled slot in the control ring pulls on the slide pin at the end of the pull wire, stretching the pull wire and placing it under heavy tension.