Economical Sponge Phantom for Teaching,Understanding, and Researching A‐ and B‐Line Reverberation Artifacts in Lung Ultrasound

This project evaluated a low‐cost sponge phantom setup for its capability to teach and study A‐ and B‐line reverberation artifacts known from lung ultrasound and to numerically simulate sound wave interaction with the phantom using a finite‐difference time‐domain (FDTD) model. Both A‐ and B‐line artifacts were reproducible on B‐mode ultrasound imaging as well as in the FDTD‐based simulation. The phantom was found to be an easy‐to‐set up and economical tool for understanding, teaching, and researching A‐ and B‐line artifacts occurring in lung ultrasound. The FDTD method–based simulation was able to reproduce the artifacts and provides intuitive insight into the underlying physics.     

医学物理界科研滞后原因探讨

研究目的在于推动医学物理界科研发展。通过对医学物理界历史和现实的科研状况回顾与分析，揭示影响医学物理界开展科研的主要原因：缺乏科研带头人的传帮带，缺乏科研设备，教师的科研要求太低动力不足，知识面太窄，没有明确的研究方向。强调指出科研能否开展起来，贡献大小关键在于主观能动性的发挥，在端正科研态度的基础上，应遵循“一综述、二对比、三确定”的三个步骤，认真选定有发展前景的研究方向，掌握研究该方向课题的相关理论和技能；最后部分阐明了选题常用的四种方法：（1）顺藤摸瓜找题，（2）到相关社会实践中找题，（3）阅读文献找题，（4）学术交流找题。     

Computed tomography of the orbit – A review and an update

Computed tomography (CT) and magnetic resonance imaging (MRI) of the orbit have been competing for the hearts and minds of health care providers for well over 2 decades. While several drawbacks pertaining to CT have been outlined since the introduction of MRI, CT remains the standard diagnostic test for evaluating cross-sectional, 2 or 3-dimensional images of the body.     

ICRU89号报告的解读——放射物理篇

本篇综述对ICRU89号报告的放射物理相关内容进行了详细解读,希望为从事宫颈癌近距离放射治疗的同仁在放射物理相关方面提供借鉴。     

Ultrasound Imaging for Traumatic Brain Injury

Traumatic brain injury (TBI) is challenging to assess even with recent advancements in computed tomography and magnetic resonance imaging. Ultrasound (US) imaging has previously been less utilized in TBI compared to conventional imaging because of limited resolution in the intracranial space. However, there have been substantial improvements in contrast‐enhanced US and development of novel techniques such as intravascular US. Also, continued research provides further insight into cerebrovascular parameters from transcranial Doppler imaging. These advancements in US imaging provides the community of TBI imaging researchers and clinicians new opportunities in clinically monitoring and understanding the pathologic mechanisms of TBI.