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| SPECIAL TRANSDUCERS | |
| 作者姓名： | Nicolaas Bom Charles T. Lancee Nico de Jong Cornells J. Slager |
| 作者单位： | Thoraxcenter，Erasmus University Rotterdam and Academic Hospital Rotterdam Dijkzigt and the Interuniversity Cardiology Institute of the Netherlands，Thoraxcenter，Erasmus University Rotterdam and Academic Hospital Rotterdam Dijkzigt and the Interuniversity Cardiology Institute of the Netherlands，Thoraxcenter，Erasmus University Rotterdam and Academic Hospital Rotterdam Dijkzigt and the Interuniversity Cardiology Institute of the Netherlands，Thoraxcenter，Erasmus University Rotterdam and Academic Hospital Rotterdam Dijkzigt and the Interuniversity Cardiology Institute of the Netherlands |
| 摘 要： | INTRODUCTION As early as 1969 we started a program to develop two-dimensional real-time ultrasonic imaging. As a result, the first real-time images of the heart were made visible with the linear array in 1971 (1) .Parallel to the development of this nonin- vasive method for observation of the heart,a study on invasive cardiac observation was |
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