Ray A. Lathrop

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New approaches to intracerebral hemorrhage management are motivated by its high incidence and 40% mortality rate. Surgery is sometimes attempted to decompress the brain, although patient outcomes are similar regardless of whether surgery occurs. We hypothesize that surgical decompression is not more effective because current open surgical techniques disrupt(More)
Recent advances in registration have extended intrasurgical image guidance from its origins in bone-based procedures to new applications in soft tissues, thus enabling visualization of spatial relationships between surgical instruments and subsurface structures before incisions begin. Preoperative images are generally registered to soft tissues through(More)
Anecdotally, surgeons sometimes observe large errors when using image guidance in endonasal surgery. We hypothesize that one contributing factor is the possibility that operating room personnel might accidentally bump the optically tracked rigid body attached to the patient after registration has been performed. In this paper we explore the registration(More)
This dissertation offers ways that the dexterity and guidance associated with imageguided robotic surgery can be delivered without automation. The overall objective is to provide highly capable instruments to surgeons, which can, in principle, be produced for a lower overall cost or with greater overall capabilities than the robotic and image guidance(More)
The high incidence of intracerebral hemorrhages, together with a 40% mortality rate, provide strong motivation for enhancements in the treatment methods available to physicians. To minimize the disruption to healthy brain tissue associated with gaining access to the surgical site that is imposed by traditional open or endoscopic surgical intervention, we(More)
Intracerebral hemorrhage (ICH) is a life-threatening condition that happens when a blood vessel in the brain ruptures causing blood to flow into the brain tissue and form a hematoma, compressing the brain. ICH affects around one in every 50 people in their lifetime, and approximately 40% of them will die within the first month after the ICH [1]. Treatment(More)
The purpose of this investigation was to calculate the contact surface area of the long head of the biceps (LHB) in neutral position and abduction. We sought to determine whether the LHB articulates with the humeral head in a consistent pattern comparing articular contact area in neutral position and abduction. Eleven fresh frozen matched cadaveric(More)