基於現場可程式化邏輯閘陣列之超音波治療成像監控平台系統開發

Abstract

超音波由於其無創性以及高安全性常用於醫學診斷，近年來用於治療的超音波也逐漸興起。通過使用曲面的聚焦式探頭，超音波可以被集中以產生可以刺激組織或造成熱損傷的聚焦光束。被動聲學測繪 (PAM) 是已被證明可與診斷超音波結合使用的技術，以監測治療並確保安全。然而，PAM 主要與封閉式診斷超音波平台一起使用，這限制了完整治療超音波系統的設計與發展。為了解決這個問題，本研究開發了一種基於現場可程式化邏輯閘陣列 (FPGA) 的超音波治療成像監測系統。透過實驗結果已經證明該系統能夠進行 PAM 成像且能與診斷式超音波探頭結合使用，量測到的數值也與聲場掃描系統一致，並具有低成本、便攜性和高處理能力等優點，該系統可專用於引導治療性超音波。本研究通過使用 FPGA 結合治療超音波，改進了現有的超音波技術，為更先進的醫療程序鋪平了道路。

Ultrasound is widely used in medical diagnosis due to its non-invasive nature and high safety. In recent years, therapeutic ultrasound has gained popularity for its therapeutic applications. By utilizing a curved and focused transducer, ultrasound waves can be concentrated to generate a focused beam capable of stimulating tissues or causing thermal damage. Passive acoustic mapping (PAM) has been proven to be a technique that can be integrated with diagnostic ultrasound to monitor treatments and ensure safety. However, PAM is primarily used with closed diagnostic ultrasound platforms, which limits the development and integration of a complete therapeutic ultrasound system. To address this issue, our study has developed an ultrasound therapeutic imaging monitoring system based on Field-Programmable Gate Array (FPGA) technology. Experimental results have demonstrated that this system is capable of performing PAM imaging while being compatible with diagnostic ultrasound transducers. The measured values are consistent with those obtained from acoustic intensity measurement system. Additionally, the system offers advantages such as low cost, portability, and high processing power. It is specifically designed for guiding therapeutic ultrasound procedures. By employing FPGA technology in conjunction with therapeutic ultrasound, our research has improved upon existing ultrasound techniques, paving the way for more advanced medical procedures.