Previously we developed an active contour method for segmenting and tracking cells in phase-contrast microscopy images. Our method is capable of fine-grained segmentation on noisy image sequences. In this paper, we improve the active contour segmentation model to provide better accuracy, by selectively identifying areas of the contour with low confidence and removing them. The method is applied to HMEC-1 cells (human microvascular endothelial cells). The segmentation provided by the method is quantitavely compared with manually-drawn contours, showing close fit and capability to 'lock' on to cell boundaries for hundreds of frames.
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http://dx.doi.org/10.1109/EMBC.2012.6347207 | DOI Listing |
Cureus
December 2024
Neurology, Stony Brook University, Stony Brook, USA.
Although numerous definitions of brain death exist, the diagnosis and diagnostic process remain open to interpretation. We present the case of a 32-year-old male with systemic lupus erythematosus who presented to an outside hospital following a cardiac arrest while jogging. His electroencephalogram (EEG) showed abnormal contour in the posterior fields.
View Article and Find Full Text PDFJ Chiropr Med
September 2024
Norman W. Kettner, DC Imaging Center, Logan University, Chesterfield, Missouri.
Objective: The purpose of this report is to describe the presentation of a patient with a pectoralis major tendon (PMJ) tear.
Clinical Features: A 30-year-old male weightlifter presented to a chiropractor with localized left arm pain that began while bench-pressing. Ecchymosis and swelling were present, but no contour abnormalities were seen.
Aesthetic Plast Surg
January 2025
Division of Plastic Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, 600 Northern Boulevard, Great Neck, NY, 11021, USA.
Background: The legalization and changing perception of marijuana have led to a significant increase in its use. Although studies exploring marijuana's physiological effects have grown, its effect on surgical outcomes remains unclear. This study investigates the influence of marijuana consumption on postoperative complications in patients undergoing abdominal body contouring surgeries such as abdominoplasties and panniculectomies.
View Article and Find Full Text PDFEntropy (Basel)
December 2024
Shandong Artificial Intelligence Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China.
Image segmentation is a crucial task in artificial intelligence fields such as computer vision and medical imaging. While convolutional neural networks (CNNs) have achieved notable success by learning representative features from large datasets, they often lack geometric priors and global object information, limiting their accuracy in complex scenarios. Variational methods like active contours provide geometric priors and theoretical interpretability but require manual initialization and are sensitive to hyper-parameters.
View Article and Find Full Text PDFJ Orthop Surg Res
January 2025
Department of Center of Precision Medicine, The First Affiliated Hospital of Wannan Medical College, Yijishan Hospital of Wannan Medical College), Zheshan West Road, Wuhu, 241001, Anhui, China.
Background: There is currently no definitive treatment for osteoarthritis. We examined the therapeutic effects and underlying mechanisms of platelet-rich plasma (PRP) and adipose-derived mesenchymal stem cells (ADSCs), individually or in combination, in a rat model of anterior cruciate ligament-induced degenerative osteoarthritis (OA) of the knee. This study seeks to advance clinical approaches to OA treatment.
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