[1] Oregon Medical Laser Center (Optical Spectra)
[2] The Diebold Group (Brown University)
[3] UCL Photoacoustic Imaging Group (Prof. Paul Beard, University College London)
[4] Optical Imaging Laboratory (Prof. Lihong Wang, Washington University in St. Louis)
[5] Ultrasound Imaging and Therapeutics Research Laboratory (Prof. Stanislav Emelianov, UT Austin)
[6] Optical and Ultrasound Imaging Lab (Prof. Quing Zhu, University of Connecticut)
[7] Viator Lab (Prof. John A. Viator, University of Missouri)

[1] k-Wave: a Matlab Toolbox for Photoacoustic Simulation (UCL Photoacoustic Imaging Group)

[1] OptoSonics
[2] TomoWave Laboratories
[3] Seno Medical Instruments Inc.

[1] Institute of High Frequency Engineering (Prof. Dr.-Ing.H.Ermert)
[2] Research Laboratory of Dr. Katherine W. Ferrara (UC Davis)
[3] Center for Industrial and Medical Ultrasound (APL, Univ. of Washinton)
[4] Center for Fast Ultrasound Imaging (DTU)
[5] John Hossack Research Activities (UVA)
[6] Diagnostic Ultrasound: Adaptive, Flow, and Radiation Force Based Imaging (Prof. Gregg Trahey, Duke)
[7] Resource Center for Medical Ultrasonic Transducer Technology (Prof. Kirk K. Shung,USC)
[8] Virginia Medical Ultrasound Technology Group (UVA)
[9] Laboratoire Ondes et Acoustique (Prof. Mathias Fink, Univ. Paris VII)
[10] Ultrasonic Imaging Laboratory (Prof. Pai-Chi Li, NTU)
[11] Ultrasonic Imaging Laboratory at Illinois (Insana Lab, Elastography, Phantom and Patient Data download)

[1] Field II - Ultrasound Simulation Program (Prof. J. A. Jensen, DTU)
[2] DREAM toolbox - Spatial Impulse Response Calculation (F. Lingvall, Uppsala University, Sweden)

[1] IEEE Ultrasonics, Ferroelectrics, and Frequency Control
[2] Philips
[3] GE Medical Systems
[4] Siemens
[5] VisualSonics
[6] Supersonic Imagine

[1] Molecular Expressions (Fundamentals of Optical Microscopy)
[2] Transtronics (Electronics)
[3] HyperPhysics
[4] The Visual Dictionary
[5] OneLook Dictionary Search
[6] Prof. Jian-Jiun Ding's Lab training materials (Useful skills of programming, office, writing, and research)
[5] Prof. Yigong Shi's Blog

[1] Optical Window in Biological Tissue
[2] Monte Carlo Method for Photon Transport
[3] RTE and Diffusion Theory for Photon Transport in Biological Tissue

[1] Haison Technology Inc. (Customized microscope incubator)