Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"Electromagnetic tracking"”.
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Electromagnetic Tracking for Medical Imaging
This thesis explores the novel use of a wireless electromagnetic: EM) tracking device in a Computed Tomography: CT) environment. The sources of electromagnetic interference inside a Philips Brilliant Big Bore CT scanner are analyzed. A research version of the Calypso wireless tracking system was …
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Creating an open source electromagnetic tracking platform
… and testing of Anser, the world’s first open electromagnetic tracking (EMT) platform for use in minimally invasive and image-guided interventions; Anser EMT. The goal of this work is to advance the state of the art of electromagnetic tracking systems by creating an open-source electromagnetic …
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Electromagnetic tracking and steering for catheter navigation
This thesis explores the use of electromagnetics for both steering and tracking of medical instruments in minimally invasive surgeries. The end application is virtual navigation of the lung for biopsy of early stage cancer nodules. Navigation to the peripheral regions of the lung is difficult due …
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On-chip magnetic sensor and readout design for 3D position tracking in image-guided interventions
Electromagnetic tracking (EMT) technology is integral to complex medical procedures, providing precise real-time tracking of surgical instruments while reducing dependence on radiation-based imaging. EMT is particularly beneficial in various image-guided interventions, enhancing accuracy and …
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The Bio-Mechanical Development and Kinematic Evaluation of Zone I and Zone II Injuries and their Corresponding Surgical Repair Techniques using an In-Vitro Active Finger Motion Simulator: A Cadaveric Study
… induced tissues within the finger. Accuracy of electromagnetic tracking (EM) systems were evaluated compared to the standard optical tracking systems and used to develop motion derived finger joint coordinate systems. Moreover, minute strain gauges were utilized to measure strains induced by the …
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Ruby Joint Stabilization System as a Suitable Method of Extracapsular Repair
… body weight. Motion data was collected using an electromagnetic tracking system at stifle angles of 125o, 135o and 145o with the CrCL-intact, CrCL-deficient and the Ruby applied. Results: Total translation of the CrCL-deficient stifle following the Ruby was reduced, but remained greater than the …
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The effects a novel extracapsular suture technique (lateral extracapsular suture system or LESSa) on the kinematics of the cranial cruciate deficient stifle
… and stifle angles of 125", 135", and 145" using electromagnetic tracking sensors. Results: Cranial cruciate ligament deficient stifles had significantly greater (p <0.0001) cranial displacement and internal rotation of the tibia relative to the femur than CCL intact stifles or LESSa treated …
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Effect of tibial insertion points for lateral suture stabilization on the kinematics of the cranial cruciate ligament deficient-stifle during early, middle and late stance: An in vitro study
… Limbs were mounted in a testing jig and an electromagnetic tracking system was used to determine 3-D stifle kinematics under 33% body weight load during early, middle and late stance in the following sequence: CrCL intact, CrCL-D and LSS with the distal anchor through the tibial tuberosity …
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Dynamic Postural Stability During Gait Initiation in Individuals with Chronic Ankle Instability: The Influence of Walking Velocity
… using two non-conducting forceplates and an electromagnetic tracking system. Subjects performed five trials of each task, first normal speed GI and then fast speed GI. There were no significant differences noted for both A/P and M/L movement and velocity of COP during S1. There were also no …
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BIOMECHANICS OF THE DISTAL RADIOULNAR JOINT WITH A MALALIGNED DISTAL RADIUS
… and ulnar load cell were implanted and an electromagnetic tracking device was used to record the motion of the radius and ulna. The kinematics and joint loading of the native forearm were measured at the beginning of each testing and compared with simulated distal radial deformities. As the …
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Computer-assisted Workflow Recognition for Central Venous Catheterization
… Central Line Tutor uses a combination of electromagnetic tracking and tool recognition from a webcam video to analyze trainees’ workflow compliance. Critical tasks such as inserting the needle into the vessel are recognized by tracking the tools’ positions. The remaining workflow tasks …
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Establishing Normal Motion Between the Thigh to Pelvis and Trunk to Pelvis Segments in Female, Collegiate Volleyball and Soccer Athletes
… and trunk to pelvis segments as measured by an electromagnetic tracking system. The participants then performed a landing and lateral step-down task. Results: Results of the RMANOVAs revealed interactions between all of the dependent variables except when comparing the single leg stance to the …
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Advances in real-time thoracic guidance systems
… 3D localization of discrete points available via electromagnetic: EM) position monitoring. Technology from Calypso Medical allows for simultaneous tracking of up to three implanted wireless transponders. Additionally, Medtronic Navigation uses wired electromagnetic tracking to guide surgical tools …
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Evaluation of external ventricular drain complications and the use of a procedure-targeted image-guidance system
… an image-guidance system, whether optical or electromagnetic. The most common complications of ventriculostomy are hemorrhage and infection. It is unclear whether catheter placement accuracy and the number of passes of the catheter for each placement are correlated with ventriculostomy …
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Kinematics at the ankle joint complex in rheumatoid arthritis
… there are no proven interventions. A generic electromagnetic tracking system was developed to undertake three-dimensional kinematics at the ankle joint complex in the bare and shod foot during gait. A joint simulator was designed, manufactured and commissioned in house to test the accuracy of …
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InterNAV2.0: Minimally Invasive Robot-Assisted Tumour Ablative Therapies
… to consolidate ultrasound imaging and electromagnetic positioning. Early work on InterNAVl.0 looked to develop a research tool to handle imaging information obtained through ultrasound imaging. It was not de signed as a navigation and control environment for clinical use. The objective …