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  3. Richard Satava, program manager for advanced medical technologies, has been a driving force bringing virtual reality to medicine

Richard Satava, program manager for advanced medical technologies, has been a driving force bringing virtual reality to medicine

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问题    Richard Satava, program manager for advanced medical technologies, has been a driving force bringing virtual reality to medicine, where computers create a "virtual" or simulated environment for surgeons and others medical practitioners(从业者).
   "With virtual reality we’ll be able to put a surgeon in every trench," said Satava. He envisaged a time when soldiers who are wounded fighting overseas are put in mobile surgical units equipped with computers.
   The computers would transmit images of the soldiers to surgeons hack in the U.S. The surgeons would look at the soldier through virtual reality helmets(头盔)that contain a small screen displaying the image of the wound. The doctors would guide robotic instruments in the battlefield mobile surgical unit that operate on the soldier.
   Although Satava’s vision may be years away from standard operating procedure, scientists are progressing toward virtual reality surgery. Engineers at an international organization in California are developing a tele-operating device. As surgeons watch a three-dimensional image of the surgery, they move instruments that are connected to a computer, which passes their movements to robotic instruments that perform the surgery. The computer provides feedback to the surgeon on force, textures, and sound.
   These technological wonders may not yet be part of the community hospital setting but increasingly some of the machinery is finding its way into civilian medicine. At Wayne State University Medical School, surgeon Lucia Zamorano takes images of the brain from computerized scans and uses a computer program to produce a 3-D image. She can then maneuver the 3-D image on the computer screen to map the shortest, least invasive surgical path to the tumor(肿瘤). Zamorano is also using technology that attaches a probe to surgical instruments so that she can track their positions. While cutting away a tumor deep in the brain, she watches the movement of her surgical tools in a computer graphics image of the patient’s brain taken before surgery.
   During these procedures-operations that are done through small cuts in the body in which a miniature camera and surgical tools are maneuvered-surgeons are wearing 3-D glasses for a better view. And they are commanding robot surgeons to cut away tissue more accurately than human surgeons can.
   Satava says," We are in the midst of a fundamental change in the field of medicine."
During virtual reality operations, the surgeon can have a better’ view of the cuts in the body because
选项 A、he is looking at the cuts on a computer screen
B、the cuts can be examined from different angles
C、the cuts have been highly magnified
D、he is wearing 3-D glasses
答案B
解析 从最后一段surgeons are wearing 3-D glasses for a better view可知，在虚拟现实条件下的手术通过计算机和微型相机的帮助，使得医生可以在屏幕上看到能够表现伤口不同角度的三维图像，因而有一个更清晰的视野，所以选B。A，C，D均不正确。
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