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Hepatocellular carcinoma (HCC) is the most common type of primary liver cancer in adults, and the most common cause of death of people suffering from cirrhosis. The segmentation of liver lesions in CT images allows assessment of tumor load,…

Computer Vision and Pattern Recognition · Computer Science 2020-03-16 Nadja Gruber , Stephan Antholzer , Werner Jaschke , Christian Kremser , Markus Haltmeier

We investigate super-resolution methods for image reconstruction from data provided by a family of scanning instruments like the Herschel observatory. To do this, we constructed a model of the instrument that faithfully reflects the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 F. Orieux , J. -F. Giovannelli , T. Rodet , A. Abergel , H. Ayasso , M. Husson

Purpose: To improve the delivery efficiency of VMAT by extending the recently published VMAT treatment planning algorithm vmerge to automatically generate optimal partial-arc plans. Methods and materials: A high-quality initial plan is…

Medical Physics · Physics 2015-06-05 Jeremiah Wala , Ehsan Salari , Wei Chen , David Craft

Ultrasound computed tomography (USCT) is a promising technique that achieves superior medical imaging reconstruction resolution by fully leveraging waveform information, outperforming conventional ultrasound methods. Despite its advantages,…

Image and Video Processing · Electrical Eng. & Systems 2024-07-23 Yi Sheng , Hanchen Wang , Yipei Liu , Junhuan Yang , Weiwen Jiang , Youzuo Lin , Lei Yang

In this study, we present pituitary adenoma volumetry using the free and open source medical image computing platform for biomedical research: (3D) Slicer. Volumetric changes in cerebral pathologies like pituitary adenomas are a critical…

Computer Vision and Pattern Recognition · Computer Science 2012-12-13 Jan Egger , Tina Kapur , Christopher Nimsky , Ron Kikinis

Ultrasound (US) is a critical modality for diagnosing liver fibrosis. Unfortunately, assessment is very subjective, motivating automated approaches. We introduce a principled deep convolutional neural network (CNN) workflow that…

Image and Video Processing · Electrical Eng. & Systems 2020-08-11 Bowen Li , Ke Yan , Dar-In Tai , Yuankai Huo , Le Lu , Jing Xiao , Adam P. Harrison

In recent works, compressed sensing (CS) and convex optimization techniques have been applied to radio-interferometric imaging showing the potential to outperform state-of-the-art imaging algorithms in the field. We review our latest…

Instrumentation and Methods for Astrophysics · Physics 2016-11-15 Rafael E. Carrillo , Jason D. McEwen , Yves Wiaux

Compared to natural images, medical images usually show stronger visual patterns and therefore this adds flexibility and elasticity to resource-limited clinical applications by injecting proper priors into neural networks. In this paper, we…

Image and Video Processing · Electrical Eng. & Systems 2023-11-28 Hang Zhang , Rongguang Wang , Jinwei Zhang , Dongdong Liu , Chao Li , Jiahao Li

This study proposed a deep learning-based tracking method for ultrasound (US) image-guided radiation therapy. The proposed cascade deep learning model is composed of an attention network, a mask region-based convolutional neural network…

Computer Vision and Pattern Recognition · Computer Science 2023-02-15 Yupei Zhang , Xianjin Dai , Zhen Tian , Yang Lei , Jacob F. Wynne , Pretesh Patel , Yue Chen , Tian Liu , Xiaofeng Yang

Robotic laser systems offer the potential for sub-millimeter, non-contact, high-precision tissue resection, yet existing platforms lack volumetric planning and intraoperative feedback. We present RATS (Robot-Assisted Tissue Surgery), an…

Previous studies by our group have shown that three-dimensional high-frequency quantitative ultrasound methods have the potential to differentiate metastatic lymph nodes from cancer-free lymph nodes dissected from human cancer patients. To…

Computer Vision and Pattern Recognition · Computer Science 2017-05-22 Jen-wei Kuo , Jonathan Mamou , Yao Wang , Emi Saegusa-Beecroft , Junji Machi , Ernest J. Feleppa

3D reconstruction of high-resolution target remains a challenge task due to the large memory required from the large input image size. Recently developed learning based algorithms provide promising reconstruction performance than…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Yanwei Wang

Statistical image reconstruction (SIR) methods have shown potential to substantially improve the image quality of low-dose X-ray computed tomography (CT) as compared to the conventional filtered back-projection (FBP) method for various…

Medical Physics · Physics 2015-05-15 Hao Zhang , Jing Wang , Jianhua Ma , Hongbing Lu , Zhengrong Liang

Breast-conserving surgery is the most acceptable operation for breast cancer removal from an invasive and psychological point of view. Before the surgical procedure, a preoperative MRI is performed in the prone configuration, while the…

Medical Physics · Physics 2023-03-08 Arnaud Mazier , Stéphane P. A. Bordas

Wearable Augmented Reality (AR) technologies are gaining recognition for their potential to transform surgical navigation systems. As these technologies evolve, selecting the right interaction method to control the system becomes crucial.…

Human-Computer Interaction · Computer Science 2024-12-25 Hamraz Javaheri , Omid Ghamarnejad , Paul Lukowicz , Gregor Alexander Stavrou , Jakob Karolus

New statistical methods were employed to improve the ability to distinguish benign from malignant breast tissue ex vivo in a recent study. The ultimately aim was to improve the intraoperative assessment of positive tumour margins in…

Quantitative Methods · Quantitative Biology 2018-05-04 A Santaolalla , M Sheikh , M Van Hemelrijck , A Portieri , ACC Coolen

Conventional super-resolution methods suffer from two drawbacks: substantial computational cost in upscaling an entire large image, and the introduction of extraneous or potentially detrimental information for downstream computer vision…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Tianyi Zhang , Kishore Kasichainula , Yaoxin Zhuo , Baoxin Li , Jae-sun Seo , Yu Cao

Automatic segmentation of the liver and hepatic lesions is an important step towards deriving quantitative biomarkers for accurate clinical diagnosis and computer-aided decision support systems. This paper presents a method to automatically…

In a recent article series, the authors have promoted convex optimization algorithms for radio-interferometric imaging in the framework of compressed sensing, which leverages sparsity regularization priors for the associated inverse problem…

Instrumentation and Methods for Astrophysics · Physics 2014-04-01 Rafael E. Carrillo , Jason D. McEwen , Yves Wiaux

Perivascular Spaces (PVS) are a recently recognised feature of Small Vessel Disease (SVD), also indicating neuroinflammation, and are an important part of the brain's circulation and glymphatic drainage system. Quantitative analysis of PVS…

Computer Vision and Pattern Recognition · Computer Science 2018-04-13 Lucia Ballerini , Ruggiero Lovreglio , Maria del C. Valdes-Hernandez , Joel Ramirez , Bradley J. MacIntosh , Sandra E. Black , Joanna M. Wardlaw