| 数字式超声内窥成像系统(英文) |
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| 引用本文： | 陈晓冬,李明,周浩,温世杰,郁道银.数字式超声内窥成像系统(英文)[J].光子学报,2010,39(4). |
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| 作者姓名： | 陈晓冬 李明 周浩 温世杰 郁道银 |
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| 作者单位： | 1. 天津大学,精密仪器与光电子工程学院,天津,300072
2. 天津大学,光电信息技术科学教育部重点实验室,天津,300072 |
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| 基金项目： | the Project of the Education Department of China，the National High Technology Research and Development Program of China，国家自然科学基金 |
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| 摘 要： | The development of a novel push-type ultrasonic endoscope is described in which probe rotation is accomplished by a small motor situated near the transducer. A digital FPGA-based ultrasound imaging system is implemented which uses coded excitation to increase the SNR and penetration depth, with probe rotation accomplished by a small motor situated near the transducer replacing the external motor and the long steel wire used in other ultrasonic endoscopes. The apparatus is tested continuously for 300 hours with no obvious problems. The coded excitation, digital quadrature demodulation imaging system can obtain ultrasonic images of higher quality and more information of the echo is preserved compared with the analog imaging system, because the analog digital conversion is moved to the first step of the signal processing.The digital imaging system possesses a higher SNR resulting in a sharp image. Locating the motor near the probe improves the consistency of rotational speed in comparison with external guide-wire rotation, and increases the image quality and life-span of these devices.
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| 关 键 词： | 超声内窥镜 微型电机 编码激励 数字成像系统 |
A Digital Ultrasonic Endoscope System for Medical Imaging |
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| CHEN Xiao-dong,LI Ming,ZHOU Hao,WEN Shi-jie,YU Dao-yin.A Digital Ultrasonic Endoscope System for Medical Imaging[J].Acta Photonica Sinica,2010,39(4). |
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| Authors: | CHEN Xiao-dong LI Ming ZHOU Hao WEN Shi-jie YU Dao-yin |
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| Abstract: | The development of a novel push-type ultrasonic endoscope is described in which probe rotation is accomplished by a small motor situated near the transducer. A digital FPGA-based ultrasound imaging system is implemented which uses coded excitation to increase the SNR and penetration depth, with probe rotation accomplished by a small motor situated near the transducer replacing the external motor and the long steel wire used in other ultrasonic endoscopes. The apparatus is tested continuously for 300 hours with no obvious problems. The coded excitation, digital quadrature demodulation imaging system can obtain ultrasonic images of higher quality and more information of the echo is preserved compared with the analog imaging system, because the analog digital conversion is moved to the first step of the signal processing.The digital imaging system possesses a higher SNR resulting in a sharp image. Locating the motor near the probe improves the consistency of rotational speed in comparison with external guide-wire rotation, and increases the image quality and life-span of these devices. |
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| Keywords: | Ultrasonic endoscope Micro motor Coded excitation Digital imaging system |
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