研究方向

1.1 成像物理

Among the most exciting areas of digital x-ray imaging physics over the last decade has been the development of cone-beam CT (CBCT) systems in a broad scope of applications ranging from diagnostic imaging to image-guided interventions. Enabled by the emergence of high-performance flat-panel x-ray detectors and fully 3D reconstruction techniques, the proliferation of CBCT raises new challenges in understanding fully 3D imaging performance (e.g., the fully 3D noise-power spectrum, noise-equivalent quanta, and task-based detectability) and new opportunities in a broad variety of innovative imaging platforms tailored to specific new applications and clinical tasks.

1.2 三维影像重建

A general penalized likelihood (PL) framework has been developed for model-based 3D image reconstruction in cone-beam CT, providing a valuable basis for novel reconstruction techniques such as KCR, PIR-PLE, and MCR and providing dramatic improvement in image quality compared to conventional FBP under conditions of low dose and/or sparsely sampled data. Increasingly sophisticated forward models within the PL framework leverage a knowledge of the imaging chain gained from cascaded systems analysis of detector efficiency, blur, electronic noise, and other non-idealities conventionally ignored in model-based reconstruction.

3.图像配准

Deformable image registration is essential to accurately aligning information in the reference frame of the most up-to-date point in an interventional procedure.Research in the I-STAR Lab has developed a framework for fast deformable registration that adapts methods such as the Demons algorithm to applications in image-guided radiation therapy and a spectrum of image-guided surgeries.Extensions include robust implementation within a morphological pyramid, an intensity-invariant form allowing CT-to-CBCT registration, and a novel super-dimensional form allowing registration in the presence of missing tissue and/or devices introduced between image pairs.

4.影像导航介入术手术

The development of high-performance intraoperative 3D imaging promises to overcome the limitations of conventional image-guided surgery with up-to-date images during surgery that accurately present changes associated with patient setup, tissue deformation, and target excision. A prototype mobile C-arm for high-quality cone-beam CT has been developed in collaboration with industry partners to answer such clinical challenges. The prototype provides volumetric images with sub-mm spatial resolution and soft-tissue visibility at low radiation doseand is the centerpiece of an integrated surgical navigation system undergoing translation to key surgical applications.

5. 影像诊断

Prototype CBCT scanners are under development for musculoskeletal (MSK) radiology as well as imaging of traumatic brain injuary (TBI) and stroke. Such systems open new possibilities for point of care imaging. In each case, the I-STAR Lab is developing hardware systems, image reconstruction methods, and artifact correction methods that overcome conventional limitations of cone-beam CT image quality. Methods include flat-panel detector cone-beam CT, dual-energy imaging, photon counting / spectral imaging, and tomosynthesis. Recent work combines task-based image quality models not only with processes for system design, optimization, and image quality assessment but also as the objective function in the design of "task-driven imaging" methods.

http://istar.jhu.edu/people/#personModal421

约翰霍姆金斯大学_the I-STAR Lab相关推荐

约翰霍普金斯大学Alan Yuille教授招收计算机视觉暑期科研实习生
来源:AI求职约翰霍普金斯大学约翰霍普金斯大学(JHU)位于美国马里兰州巴尔的摩,1876 年建立,被认为是美国第一所研究型大学,NSF 连续 31 年将该校列为全美科研经费开支最高的大学.约翰霍 ...
全息物体也能触摸到！约翰·霍普金斯大学研究者使用脑机接口让患者感受到全息物体...
作为探索神经复用(neural multiplexing)和脑机接口(BCI)实现的新感知模式研究的一部分,约翰·霍普金斯大学(Johns Hopkins University)的研究人员展示了通过在 ...
啥都不如烂笔头，约翰霍普金斯大学新研究：学外语还得用手写
荣伟发自凹非寺报道 | 公众号 QbitAI "数字时代,也别丢了纸和笔!" 一位约翰霍普金斯大学教授如是呼吁. 之所以会有这样的忠告,是因为他在最近一项研究中发现: 在学习 ...
科研实习 | 约翰霍普金斯大学Alan Yuille教授招收计算机视觉暑期科研实习生
合适的工作难找?最新的招聘信息也不知道? AI 求职为大家精选人工智能领域最新鲜的招聘信息,助你先人一步投递,快人一步入职! 约翰霍普金斯大学约翰霍普金斯大学(JHU)位于美国马里兰州巴尔的摩,18 ...
博士申请 | 约翰霍普金斯大学招收2022年入学trustworthy AI方向博士生
合适的工作难找?最新的招聘信息也不知道? AI 求职为大家精选人工智能领域最新鲜的招聘信息,助你先人一步投递,快人一步入职! 约翰霍普金斯大学约翰霍普金斯大学 JHU 位于美国马里兰州巴尔的摩,18 ...
electron 改变窗体大小_「Science子刊」约翰·霍普金斯大学创造灰尘大小设备，可协助药物在胃肠道停留24小时之久...
本文为转化医学网原创,转载请注明出处作者:Yun 导言:胃肠道给药的治疗效果比注射治疗好,但是有的药物在胃肠道停留时间过短,没有完全发挥药效,影响治疗效果.最近约翰·霍普金斯大学的科学家发明了一种微 ...
美国约翰斯·霍普金斯大学全球新冠疫情统计数据网址
新华网和央视经常提到美国约翰斯·霍普金斯大学发布的新冠疫情最新统计数据,下面就公布一下网址,不过墙内访问速度很慢很慢,小伙伴们要有思想准备~~~ 约翰斯·霍普金斯大学全球新冠疫情统计数据网址:http ...
约翰斯·霍普金斯大学全球新冠疫情统计数据
新华网和央视经常提到美国约翰斯·霍普金斯大学发布的新冠疫情最新统计数据,下面就公布一下网址: 约翰斯·霍普金斯大学全球新冠疫情统计数据网址: 约翰斯·霍普金斯大学全球新冠疫情统计比较难受的就是加载的 ...
Johns Hopkins University Coronavirus COVID-19 Dashboard（约翰斯·霍普金斯大学疫情地图实时大屏网站）
每天都在新闻里面听:"根据美国约翰斯·霍普金斯大学疫情实时统计数据,xx日,全球范围内新增新冠--" 今天找了找资料,找到了Johns Hopkins University的官方数 ...

约翰霍姆金斯大学_the I-STAR Lab

研究方向

1.1 成像物理

1.2 三维影像重建

3.图像配准

4.影像导航介入术手术

5. 影像诊断

约翰霍姆金斯大学_the I-STAR Lab相关推荐

最新文章

热门文章