[ti:Will New Devices Replace the Stethoscope?] [by:www.otzgay.live] [00:00.00]更多聽力請訪問51VOA.COM [00:01.64]Nearly every U.S. medical school gives new students a white coat and a stethoscope. [00:09.51]The act is part of a long tradition. [00:13.52]But it is more than just symbolic. [00:17.89]Medical schools still teach stethoscope skills. [00:22.18]Doctors must be able to use them well to get their licenses. [00:28.32]But the stethoscope, 200 years after its invention, is facing an uncertain future. [00:37.44]New devices can help doctors find problems in the heart, lungs and other areas. [00:45.44]They use ultrasound technology, artificial intelligence and smartphone apps. [00:53.16]Dr. Eric Topol is a world-renowned heart doctor. [00:57.55]He considers the stethoscope obsolete – in other words, old and out of date. [01:04.86]It "was OK for 200 years," Topol said. [01:09.36]But "we need to go beyond that. We can do better." [01:14.88]Students at Indiana University, one of the nation's largest medical schools, learn stethoscope skills. [01:23.60]But they also get training in hand-held ultrasound technology. [01:30.56]The training is part of a program launched there last year [01:35.64]by Dr. Paul Wallach, one of the school's leaders. [01:40.84]Five years ago, he created a similar program at the Medical College of Georgia. [01:48.32]Wallach believes that within the next ten years, hand-held ultrasound devices [01:54.91]will become part of the usual physical exam, just like the reflex hammer. [02:02.44]But Wallach added that he isn't ready to declare the stethoscope dead. [02:07.82]He believes younger doctors will be wearing "a stethoscope [02:12.25]around the neck and an ultrasound in the pocket." [02:16.14]Modern-day stethoscopes look different than the first stethoscope. [02:22.12]It was invented in the early 1800s by Frenchman Rene Laennec. [02:28.53]But the devices work in basically the same way. [02:33.91]Sound waves make the device's flat metal area shake. [02:39.24]The shaking moves the sound through the tubes to the ears. [02:44.40]But hearing and understanding sounds from the human body requires a trained ear. [02:52.32]Dr. James Thomas is a heart doctor at Northwestern Medicine in Chicago. [03:00.00]He says that with medical advances and competing devices, [03:05.01]some younger doctors are not being trained well on the stethoscope. [03:11.24]He notes recent studies that medical school graduates in some areas [03:16.20]"may miss as many as half of murmurs using a stethoscope." [03:21.64]There is, however, a large price difference between normal stethoscopes and high-tech devices. [03:30.12]Stethoscopes usually cost under $200, [03:34.55]compared with at least a few thousand dollars for some of the new devices. [03:40.22]Dr. Dave Drelicharz has been a doctor for children for more than 10 years. [03:47.22]He understands the attraction of the newer devices. [03:51.97]But, he says, until the price comes down, the stethoscope "is still your best tool." [04:00.60]He said, "During my work hours in my office, [04:04.28]if I don't have it around my shoulders, it's as though I was feeling almost naked." [04:11.72]I'm John Russell. 更多聽力請訪問51VOA.COM 宁夏11选5推荐号码