D
Douglas N. Stephens
Researcher at University of California, Davis
Publications - 87
Citations - 2428
Douglas N. Stephens is an academic researcher from University of California, Davis. The author has contributed to research in topics: Ultrasonic sensor & Transducer. The author has an hindex of 23, co-authored 85 publications receiving 2320 citations. Previous affiliations of Douglas N. Stephens include University of Southern California.
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Apparatus and method for imaging small cavities
Sallee J. Proudian,Michael J. Eberle,Adam D. Savakus,Horst F. Kiepen,Douglas N. Stephens,David H. Rammler,Claudio I. Zanelli +6 more
TL;DR: In this article, an in vivo imaging device is provided for producing real-time images of small, moving or stationary cavities and surrounding tissue structure, which includes a probe assembly of very small dimensions and preferably sufficiently small to fit within cavities having a diameter on the order of that of a human coronary artery.
Patent
High resolution intravascular ultrasound transducer assembly having a flexible substrate
TL;DR: In this article, a flexible transducer assembly is presented, which consists of a flexible substrate to which the transducers and transducers are attached while the flexible substrate is in a substantially flat shape.
Patent
Apparatus and method for detecting blood flow in intravascular ultrasonic imaging
TL;DR: In this article, an apparatus and method for imaging blood flow from within a vasculature was described, where an ultrasound catheter probe carrying an ultrasound transducer array is inserted within a blood vessel.
Patent
Method and apparatus for ultrasonic imaging
TL;DR: In this paper, the transducer element (412) is designed for k33 half-resonance and can operate and provide for both forward-looking (514) and side looking (512) elevation apertures.
Patent
A method and apparatus for creating a color blood flow image based upon ultrasonic echo signals received by an intravascular ultrasound imaging probe
David Bleam,Michael J. Eberle,Gerald L. Litzza,Matthew O'Donnell,Douglas N. Stephens,Ching-Chen Citrus Heights Wu,Randy Sacramento Ziegenbein +6 more
TL;DR: In this paper, a blood flow detection and imaging method and system is described for displaying images in accordance with signals transmitted from an intravascular ultrasound transducer probe, which includes means for independently designating persistence factors for smoothing calculated speed and power of the dynamic portion of a field of view within a vasculature.