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Roger J. Zemp
Researcher at University of Alberta
Publications - 248
Citations - 4040
Roger J. Zemp is an academic researcher from University of Alberta. The author has contributed to research in topics: Capacitive micromachined ultrasonic transducers & Microscopy. The author has an hindex of 32, co-authored 223 publications receiving 3451 citations. Previous affiliations of Roger J. Zemp include University of California, Davis & Washington University in St. Louis.
Papers
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Proceedings ArticleDOI
S-sequence bias-encoded photoacoustic imaging with top Orthogonal to Bottom Electrode (TOBE) CMUT arrays
TL;DR: In this paper, the authors proposed a method to bias more than one column at a time using a biasing pattern sampled from rows or columns of a Hadamard S-matrix to improve signal-to-noise ratio.
Proceedings ArticleDOI
Pre-envelope deconvolution for increased lesion detection efficiency in ultrasonic imaging
TL;DR: In this article, an ideal observer model was used to evaluate the efficiency of human observers detecting a simulated lesion in the presence of speckle, and the ability of pre-envelope deconvolution to improve performance in this task.
Journal ArticleDOI
Virtual histopathology with ultraviolet scattering and photoacoustic remote sensing microscopy
Nathaniel J. M. Haven,Matthew T. Martell,Brendyn D. Cikaluk,Brendon S. Restall,Ewan McAlister,Sveta Silverman,Lashan Peiris,Jean Deschenes,Xingyu Li,Roger J. Zemp +9 more
TL;DR: High-resolution hematoxylin and eosin-like virtual histopathology of unstained human breast lumpectomy specimen sections using ultraviolet scattering-augmented photoacoustic remote sensing microscopy and a colormap-matching algorithm based on blind stain separation from a reference true H&E image are introduced.
Journal ArticleDOI
Photoacoustic imaging of angiogenesis in a subcutaneous islet transplant site in a murine model.
Wei Shi,Rena Pawlick,Antonio Bruni,Yasmin Rafiei,Andrew R. Pepper,Boris Gala-Lopez,Min Choi,Andrew J. Malcolm,Roger J. Zemp,A. M. James Shapiro +9 more
TL;DR: In this paper, an angiocatheter was temporarily implanted subcutaneously, which facilitated angiogenesis to promote subsequent islet engraftment, and photoacoustic imaging was used to track angiogenogenesis during the priming of the subcutaneous site by the implanted catheter at 1 to 4 weeks postcatheter.
Proceedings ArticleDOI
Fast-scanning ultrasonic-photoacoustic biomicroscope: in vivo performance
TL;DR: In this article, a combination of ultrasound and photo-acoustic imaging modalities has been used to visualize the finger and palm of a hand to almost 1cm ultrasound depths and multiple millimeter-scale photoacoustic depths.