A5066268934- Medical Imaging and Analysis
- Medical Image Segmentation Techniques
- Advanced Neural Network Applications
- Cardiovascular Function and Risk Factors
- Prostate Cancer Diagnosis and Treatment
- Cardiac Imaging and Diagnostics
- Advanced Radiotherapy Techniques
- Advanced X-ray and CT Imaging
- Blind Source Separation Techniques
- Spectroscopy and Chemometric Analyses
- Spine and Intervertebral Disc Pathology
- Medical Imaging Techniques and Applications
- Cardiac Valve Diseases and Treatments
- COVID-19 diagnosis using AI
- Surgical Simulation and Training
- Radiomics and Machine Learning in Medical Imaging
- Spinal Fractures and Fixation Techniques
- Prostate Cancer Treatment and Research
- Phonocardiography and Auscultation Techniques
- Advanced Image Processing Techniques
- Anesthesia and Pain Management
- Time Series Analysis and Forecasting
- Non-Invasive Vital Sign Monitoring
- Robotics and Sensor-Based Localization
- 3D Shape Modeling and Analysis
University of British Columbia
2013-2017
Echocardiography (echo) is a skilled technical procedure that depends on the experience of operator. The aim this paper to reduce user variability in data acquisition by automatically computing score echo quality for operator feedback. To do this, deep convolutional neural network model, trained large set samples, was developed scoring apical four-chamber (A4C) echo. In paper, 6,916 end-systolic images were manually studied an expert cardiologist and assigned between 0 (not acceptable) 5...
Low-dose-rate prostate brachytherapy treatment takes place by implantation of small radioactive seeds in and sometimes adjacent to the gland. A patient specific target anatomy for seed placement is usually determined contouring a set collected transrectal ultrasound images prior implantation. Standard-of-care delineate clinical anatomy, which closely follows real boundary. Subsequently, boundary dilated with respect guidelines determine planning volume. Manual these two anatomical targets...
Low-dose-rate brachytherapy is a radiation treatment method for localized prostate cancer. The standard of care this procedure to acquire transrectal ultrasound images the in order devise plan deliver sufficient dose cancerous tissue. Brachytherapy planning involves delineation contours these images, which closely follow boundary, i.e., clinical target volume. This process currently performed either manually or semi-automatically, requires user interaction landmark initialization. In paper,...
A common challenge when performing surface-based registration of images is ensuring that the surfaces accurately represent consistent anatomical boundaries. Image segmentation may be difficult in some regions due to either poor contrast, low slice resolution, or tissue ambiguities. To address this, we present a novel non-rigid surface method designed register two partial surfaces, capable ignoring where boundary unclear. Our probabilistic approach incorporates prior geometric information...
We propose a joint information approach for automatic analysis of 2D echocardiography (echo) data. The combines priori images, their segmentations and patient diagnostic within unified framework to determine various clinical parameters, such as cardiac chamber volumes, disease labels. main idea behind the is employ Independent Component Analysis both echo image intensity corresponding segmentation labels generate models that jointly describe label space patients on multiple apical views,...
Objective: This paper presents the results of a new approach for selection RF time series features based on joint independent component analysis in vivo characterization prostate cancer. Methods: We project three sets extracted from spectrum, fractal dimension, and wavelet transform ultrasound data space spanned by five components. Then, we demonstrate that obtained mixing coefficients group patients can be used to train classifier, which applied characterize cancerous regions test patient....
Echocardiography (echo) is the most common test for diagnosis and management of patients with cardiac condi- tions. While medical imaging modalities benefit from a relatively automated procedure, this not case echo quality final view depends on competency experience sonographer. It uncommon that sonographer does have adequate to adjust transducer acquire high echo, which may further affect clinical diagnosis. In work, we aim aid operator during image acquisition by automatically assessing...
One of the commonly used treatment methods for early-stage prostate cancer is brachytherapy. The standard care planning this procedure segmentation contours from transrectal ultrasound (TRUS) images, which closely follow boundary. This process currently performed either manually or using semi-automatic techniques. paper introduces a fully automatic algorithm uses <i>a priori</i> knowledge in reference data set TRUS volumes. A non-parametric deformable registration method employed to...
In this paper, we present a registration pipeline to compensate for prostate motion and deformation during targeted freehand biopsies. We perform 2D-3D by reconstructing thin-volume around the real-time 2D ultrasound imaging plane. Constrained Sum of Squared Differences (SSD) gradient descent optimization are used rigidly align moving volume fixed thin-volume. Subsequently, B-spline de- formable is performed remaining non-linear deformations. SSD zero-bounded Limited memory Broyden Fletcher...
Brachytherapy as one of the treatment methods for prostate cancer takes place by implantation radioactive seeds inside gland. The standard care this procedure is to acquire transrectal ultrasound images which are segmented in order plan appropriate seed placement. segmentation process usually performed either manually or semi-automatically and associated with subjective errors because visibility limited images. current also limits possibility intra-operative delineation perform real-time...
In low-dose prostate brachytherapy treatment, a large number of radioactive seeds is implanted in and adjacent to the gland. Planning this treatment involves determination Target Volume (PTV), followed by defining optimal seeds, needles their coordinates for implantation. The two major planning tasks, i.e. PTV seed definition, are associated with inter- intra-expert variability. Moreover, since these steps performed sequence, variability accumulated overall plan. paper, we introduce model...