- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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A Single Simulation Platform for Hybrid Photoacoustic and RF-Acoustic Computed Tomography
摘要： In recent years, multimodal thermoacoustic imaging has demonstrated superior imaging quality compared to other emerging modalities. It provides functional and molecular information, arising due to electromagnetic absorption contrast, at ultrasonic resolution using inexpensive and non-ionizing imaging methods. The development of optical- as well as radio frequency (RF)-induced thermoacoustic imaging systems would benefit from reliable numerical simulations. To date, most numerical models use a combination of different software in order to model the hybrid thermoacoustic phenomenon. Here, we demonstrate the use of a single open source finite element software platform (ONELAB) for photo- and RF-acoustic computed tomography. The solutions of the optical diffusion equation, frequency domain Maxwell’s equations, and time-domain wave equation are used to solve the optical, electromagnetic, and acoustic propagation problems, respectively, in ONELAB. The results on a test homogeneous phantom and an approximate breast phantom confirm that ONELAB is a very effective software for both photo- and RF-acoustic simulations, and invaluable for developing new reconstruction algorithms and hardware systems.
关键词： tomography,thermoacoustic,radio frequency,photoacoustic imaging
更新于2025-09-23 15:22:29
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Flexible laser-induced-graphene omnidirectional sound device
摘要： Flexible sound devices based on laser-induced-graphene (LIG) have attract great interests due to its excellent thermoacoustic effect. Traditional sound devices usually have a sound field with a special directivity, while the LIG-based sound device will have an omnidirectional sound field when bent into a cylinder. Besides, the sound pressure of the thermoacoustic device has a linear and inverse relationship with the input electrical power and the testing distance respectively. This novel sound device will have great application potentials in flexible electronics and can be helpful for the integration of a whole flexible electrical system.
关键词： Thermoacoustic effect,Laser-induced-graphene,Sound device,Omnidirectional
更新于2025-09-23 15:19:57