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PET/CT-guided biopsy with respiratory motion correction
Springer Science and Business Media LLC - Tập 14 - Trang 2187-2198 - 2019
Given the ability of positron emission tomography (PET) imaging to localize malignancies in heterogeneous tumors and tumors that lack an X-ray computed tomography (CT) correlate, combined PET/CT-guided biopsy may improve the diagnostic yield of biopsies. However, PET and CT images are naturally susceptible to problems due to respiratory motion, leading to imprecise tumor localization and shape dis......
Positioning error evaluation of GPU-based 3D ultrasound surgical navigation system for moving targets by using optical tracking system
Springer Science and Business Media LLC - Tập 8 - Trang 379-393 - 2012
A near real-time three-dimensional (3D) ultrasound navigation system has been developed for guiding surgery involving internal organs that move and change shape (e.g., abdominal surgery, fetal surgery). In practical applications, significant errors arise between the actual navigation-image positions depending on the time delay of the system. Therefore, the positioning error of the system relative ......
Patient-specific prediction of SEEG electrode bending for stereotactic neurosurgical planning
Springer Science and Business Media LLC - Tập 16 - Trang 789-798 - 2021
Electrode bending observed after stereotactic interventions is typically not accounted for in either computer-assisted planning algorithms, where straight trajectories are assumed, or in quality assessment, where only metrics related to entry and target points are reported. Our aim is to provide a fully automated and validated pipeline for the prediction of stereo-electroencephalography (SEEG) ele......
Detection and grading of prostate cancer using temporal enhanced ultrasound: combining deep neural networks and tissue mimicking simulations
Springer Science and Business Media LLC - Tập 12 - Trang 1293-1305 - 2017
Temporal Enhanced Ultrasound (TeUS) has been proposed as a new paradigm for tissue characterization based on a sequence of ultrasound radio frequency (RF) data. We previously used TeUS to successfully address the problem of prostate cancer detection in the fusion biopsies. In this paper, we use TeUS to address the problem of grading prostate cancer in a clinical study of 197 biopsy cores from 132 ......
Development of a vibration haptic simulator for shoulder arthroplasty
Springer Science and Business Media LLC - Tập 13 - Trang 1049-1062 - 2018
Glenoid reaming is a technically challenging step during shoulder arthroplasty that could possibly be learned during simulation training. Creation of a realistic simulation using vibration feedback in this context is innovative. Our study focused on the development and internal validation of a novel glenoid reaming simulator for potential use as a training tool. Vibration and force profiles associ......
Design of a noise-dependent shrinkage function in wavelet shrinkage of X-ray CT image
Springer Science and Business Media LLC - Tập 4 - Trang 353-366 - 2009
Many shrinkage functions have been introduced and applied for the wavelet shrinkage denoising of computed tomography (CT) images. However, these functions have problems in continuity of functions and cause “shrinkage artifacts”. Therefore, we designed a new and smooth shrinkage function using noise distribution. The proposed shrinkage function was designed under the following four conditions: (1) ......
Web-based bone age assessment by content-based image retrieval for case-based reasoning
Springer Science and Business Media LLC - Tập 7 - Trang 389-399 - 2011
Maturity estimation by radiological bone age assessment (BAA) is a frequent task for pediatric radiologists. Following Greulich and Pyle, all hand bones are compared with a standard atlas, or a subset of bones is examined according to Tanner and Whitehouse. We support BAA comparing the epiphyses of a current case to similar cases with validated bone age by content-based image retrieval (CBIR). A w......
Novel microscope-based visual display and nasopharyngeal registration for auditory brainstem implantation: a feasibility study in an ex vivo model
Springer Science and Business Media LLC - - 2021
An auditory brainstem implant (ABI) represents an alternative for patients with profound hearing loss who are constrained from receiving a cochlear implant. The positioning of the ABI electrode influences the patient’s auditory capacity and, therefore, quality of life and is challenging even with available intraoperative electrophysiological monitoring. This work aims to provide and assess the fea......
A multi-camera, multi-view system for training and skill assessment for robot-assisted surgery
Springer Science and Business Media LLC - Tập 15 Số 8 - Trang 1369-1377 - 2020
Design, characterization and optimization of a soft fluidic actuator for minimally invasive surgery
Springer Science and Business Media LLC - - 2019
In minimally invasive surgery and endoscopy, the rise of soft robotics, using materials of similar softness as biological soft tissues, opens many new opportunities. Soft actuated catheters could become an alternative to current steerable catheters, by minimizing the risk of damage to surrounding tissues while enhancing the possibilities to navigate in confined space and to reach remote locations.......
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