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便攜式超聲背向散射骨密度儀設(shè)計 Design of portable ultrasound bone densitometer using backscatter signal |
| 作者： 付思東 唐國揚 俞政濤 劉曉宙 何愛軍 |
| 單位：<span style="font-family:宋體">南京大學(xué)電子科學(xué)與工程學(xué)院生物醫(yī)學(xué)工程研究所（南京</span> 210023<span style="font-family:宋體">）</span><p><span style="font-family:宋體">南京澳思泰生物科技有限公司（南京</span> 210028<span style="font-family:宋體">）</span></p><p><span style="font-family:宋體">南京大學(xué)聲學(xué)研究所近代聲學(xué)教育部重點實驗室（南京</span> 210093<span style="font-family:宋體">）</span></p> |
| 關(guān)鍵詞： 背向散射; 密度儀; 現(xiàn)場可編程門陣列; 便攜式設(shè)備; 超聲 |
| 分類號：R318.6 |
| 出版年·卷·期（頁碼）：2018·37·2（188-192） |
| 摘要： |
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目的 設(shè)計基于背向散射信號來評判骨密度情況的便攜式超聲骨密度儀, 為實現(xiàn)超聲骨密度儀的低成本和便攜性提供一種解決方案。方法 使用現(xiàn)場可編程門陣列 (field programmable gate array, FPGA) 作為主控以控制整個系統(tǒng)正常工作, 配合信號調(diào)理、高速模數(shù)轉(zhuǎn)換器 (analog-to-digital converter, ADC) 和USB傳輸電路, 來實現(xiàn)高壓脈沖控制模塊、增益控制模塊、信號采集、數(shù)據(jù)傳輸。最后對系統(tǒng)噪聲和采集到的背向散射信號進行測試, 并用松質(zhì)骨樣本進行骨密度測量的測試。結(jié)果 系統(tǒng)整體尺寸為15 cm×10 cm×3 cm, 數(shù)據(jù)傳輸速率可達60 MB/s, 噪聲水平低。結(jié)論 設(shè)計了一種USB接口的便攜式背向散射超聲骨密度儀, 在USB接口供電時, 可以有效地獲取背向散射信號。 |
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Objective Portable ultrasonic bone densitometer, using backscatter technology, was designed to provide a solution to realize the portable and the low cost for the bone densitometer. Methods The system, using field programmable gate array (FPGA) as control IC to make the system work well, worked with high-speed analog to digital converter (ADC) and high-speed USB to implement high-voltage control module, gain control module, data acquisition and data transmission. Finally, measurements for noise, backscatter signals, and bone density with cancellous bones were performed. Results The size of the whole system was 15 cm×10 cm×3 cm, the speed of data transmission was up to 60 MB/s, the noise was low. Conclusions A kind of portable ultrasound bone densitometer with a USB port was designed. When supplied by USB port, the system could acquire the backscatter signal effectively. |
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地址：北京安定門外安貞醫(yī)院內(nèi)北京生物醫(yī)學(xué)工程編輯部 電話：010-64456508 傳真：010-64456661 電子郵箱：[email protected] |