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SUMMARY:Xiang (Shawn) Zhang (Postdoctoral Associate\, Mechanical Engineeri
 ng (MechE))
DTSTART:20200921T193500Z
DTEND:20200921T195000Z
DTSTAMP:20260423T005832Z
UID:SENSEnano/6
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/SENSEnano/6/
 ">Non-contact laser ultrasound</a>\nby Xiang (Shawn) Zhang (Postdoctoral A
 ssociate\, Mechanical Engineering (MechE)) as part of SENSE.nano Symposium
  from MIT.nano\n\n\nAbstract\nFull non-contact laser ultrasound (LUS) imag
 ing has several distinct advantages over current medical ultrasound (US) t
 echnologies: elimination of coupling mediums (gel/water)\, operator-indepe
 ndent image quality\, improved repeatability\, and volumetric imaging. Cur
 rent light-based ultrasound utilizing tissue penetrating photoacoustics (P
 A) generally uses traditional piezoelectric transducers in contact with th
 e imaged tissue or carries an optical fiber detector close to the imaging 
 site. Unlike PA\, LUS minimizes optical penetration and specifically restr
 icts optical to acoustic energy transduction at the tissue surface\, maxim
 izing the generated acoustic source amplitude. LUS operates analogous to c
 onventional ultrasound by using light to replace piezoelectric elements. E
 xperimental LUS images at ~5 cm image depths with meter scale standoff suc
 cessfully demonstrates the feasibility of LUS for human imaging at eye and
  skin safe optical exposure levels. First human LUS images inspire further
  LUS development and is a significant step toward clinical implementation 
 of LUS.\n
LOCATION:https://researchseminars.org/talk/SENSEnano/6/
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