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The purpose of this study is to evaluate the effectiveness of virtual reality (VR) simulation versus dry lab suturing practice at improving suturing performance in robotic surgery. Nineteen novice participants with no prior robotic suturing experience were randomized to two groups, VR simulation and dry lab, which consisted of inanimate training on a da Vinci Si surgical system. Each group underwent...
Large lipid core is common in rupture-prone atherosclerotic plaques. Detection of the location and distribution of lipid in the atherosclerotic plaques can greatly benefit the diagnosis and treatment of vulnerable plaques. Recently introduced intravascular photoacoustic (IVPA) imaging - a technique to image the optical absorption property of tissue - can be used to detect and differentiate atherosclerotic...
Intravascular photoacoustic (IVPA) imaging has the potential to detect atherosclerotic plaques. Previously, we obtained IVPA images using a 532 nm pulsed laser and a 40 MHz intravascular ultrasound (IVUS) imaging catheter. The optical absorption of light by the plaque components was used as a contrast mechanism helpful in detecting the plaque. However, plaque differentiation requires a method to remotely...
We previously demonstrated a method to perform simultaneous intravascular photoacoustic (IVPA) and ultrasound (IVUS) imaging using an IVUS imaging catheter. During photoacoustic imaging, the energy fluence of optical irradiation was maintained low to conform to laser safety standards for medical imaging applications. However, the maximum permissible exposure for intravascular imaging is not yet well...
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