最近,心脏病检查技术有了新的突破,这使得心脏病的早期诊断成为可能。由美国联邦政府拨款,以波义德博士为首的物理学家小组负责设计的新型高速扫描器最近在加利福尼亚大学制成。这一新仪器用电子束扫描取代了平常使用的阴极射线管X线扫描,它能精确显示四十分之一秒的心脏活动,这样高的扫描速度使得医师能观察到完整的心脏搏动循环,而同时使用几组扫描设备还能观 Recently, there has been a new breakthrough in heart disease screening technology that makes early diagnosis of heart disease possible. The new high-speed scanner, designed by a group of physicists headed by Dr. Boyd, funded by the U.S. federal government, was recently made at the University of California. The new instrument replaces the commonly used cathode ray tube X-ray with electron beam scanning, which accurately shows the one-fourth of a second of heart activity, so high scanning speeds allow physicians to visualize a complete heart beat cycle, While using several sets of scanning equipment can also view