The handheld device is ergonomically designed rapid attachment and removal of the ultrasound transducer itself is possible using easy-to-operate clip mechanisms. The handheld device can be used by sonographers and also easily be integrated with robot arms for automated sonography. Using an integrated probe like this, one can relate ultrasound images to spatial location and create 3D ultrasound maps. This paper presents a handheld ultrasound probe which is integrated with sensors to measure force and pose (position/orientation) information. Yohan Noh Housden, R James Gomez, Alberto Knight, Caroline Garcia, Francesca Hongbin Liu Razavi, Reza Rhode, Kawal Althoefer, Kaspar With this device, which is the world's lightest and smallest SLO-OCT system, we were able to visualize parafoveal cone photoreceptors and nerve fiber bundles without the use of adaptive optics.Īn ergonomic handheld ultrasound probe providing contact forces and pose information. Images were acquired from a normal subject with an incident power on the eye under the ANSI limit. The handheld probe has a form factor of 7 x 6 x 2.5 cm and a weight of only 94 g, which is over an order of magnitude lighter than prior SLO-OCT handheld probes. Our design utilized a combination of commercial and custom optics that were optimized in Zemax to achieve near diffraction-limited resolution of 8 μm over a 7° field of view. A single 2D microelectromechanical systems (MEMS) scanner and a custom optical design using a converging beam prior to the scanner permitted significant reduction in the system size. We describe a very compact, novel SLO and OCT handheld probe design. More compact and lightweight probes allow for better portability and increased comfort for the operator of the handheld probe. Handheld scanning laser ophthalmoscopy (SLO) and optical coherence tomography (OCT) systems facilitate imaging of young children and subjects that have difficulty fixating. LaRocca, Francesco Nankivil, Derek DuBose, Theodore Farsiu, Sina Izatt, Joseph A.
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