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Brain cancer can be very fatal, but chances of survival increase through early detection and treatment. Doctors use Magnetic Resonance Imaging (MRI) to detect and locate tumors in the brain, and very carefully analyze scans to segment brain…

计算机视觉与模式识别 · 计算机科学 2018-11-08 Ryan Sherman

Many functional and structural neuroimaging studies call for accurate morphometric segmentation of different brain structures starting from image intensity values of MRI scans. Current automatic (multi-) atlas-based segmentation strategies…

图像与视频处理 · 电气工程与系统科学 2019-09-27 Dennis Bontempi , Sergio Benini , Alberto Signoroni , Michele Svanera , Lars Muckli

Lesion segmentation on computed tomography (CT) scans is an important step for precisely monitoring changes in lesion/tumor growth. This task, however, is very challenging since manual segmentation is prohibitively time-consuming,…

计算机视觉与模式识别 · 计算机科学 2020-01-24 Vatsal Agarwal , Youbao Tang , Jing Xiao , Ronald M. Summers

Vascular remodelling is inherent to the pathogenesis of many diseases including cancer, neurodegeneration, fibrosis, hypertension, and diabetes. In this paper, a new susceptibility-contrast based MRI approach is established to analyse…

Partial voluming (PV) is arguably the last crucial unsolved problem in Bayesian segmentation of brain MRI with probabilistic atlases. PV occurs when voxels contain multiple tissue classes, giving rise to image intensities that may not be…

计算机视觉与模式识别 · 计算机科学 2021-04-09 Benjamin Billot , Eleanor D. Robinson , Adrian V. Dalca , Juan Eugenio Iglesias

Weakly supervised semantic segmentation (WSSS) aims to produce pixel-wise class predictions with only image-level labels for training. To this end, previous methods adopt the common pipeline: they generate pseudo masks from class activation…

计算机视觉与模式识别 · 计算机科学 2022-08-09 Sungpil Kho , Pilhyeon Lee , Wonyoung Lee , Minsong Ki , Hyeran Byun

The magnetic resonance (MR) analysis of brain tumors is widely used for diagnosis and examination of tumor subregions. The overlapping area among the intensity distribution of healthy, enhancing, non-enhancing, and edema regions makes the…

图像与视频处理 · 电气工程与系统科学 2020-06-01 Mohammad Hamghalam , Baiying Lei , Tianfu Wang

Deep learning methods are actively used for brain lesion segmentation. One of the most popular models is DeepMedic, which was developed for segmentation of relatively large lesions like glioma and ischemic stroke. In our work, we consider…

计算机视觉与模式识别 · 计算机科学 2018-08-02 Egor Krivov , Valery Kostjuchenko , Alexandra Dalechina , Boris Shirokikh , Gleb karchuk , Alexander Denisenko , Andrey Golanov , Mikhail Belyaev

For brain tumour segmentation, deep learning models can achieve human expert-level performance given a large amount of data and pixel-level annotations. However, the expensive exercise of obtaining pixel-level annotations for large amounts…

计算机视觉与模式识别 · 计算机科学 2023-10-11 Xiao Liu , Antanas Kascenas , Hannah Watson , Sotirios A. Tsaftaris , Alison Q. O'Neil

Lack of large expert annotated MR datasets makes training deep learning models difficult. Therefore, a cross-modality (MR-CT) deep learning segmentation approach that augments training data using pseudo MR images produced by transforming…

计算机视觉与模式识别 · 计算机科学 2019-07-29 Jue Jiang , Yu-Chi Hu , Neelam Tyagi , Pengpeng Zhang , Andreas Rimner , Joseph O. Deasy , Harini Veeraraghavan

Lesion segmentation in medical imaging serves as an effective tool for assessing tumor sizes and monitoring changes in growth. However, not only is manual lesion segmentation time-consuming, but it is also expensive and requires expert…

计算机视觉与模式识别 · 计算机科学 2020-01-28 Vatsal Agarwal , Youbao Tang , Jing Xiao , Ronald M. Summers

To address the challenge of segmenting noisy images with blurred or fragmented boundaries, this paper presents a robust version of Variational Model Based Tailored UNet (VM_TUNet), a hybrid framework that integrates variational methods with…

计算机视觉与模式识别 · 计算机科学 2025-12-09 Kaili Qi , Zhongyi Huang , Wenli Yang

Weakly supervised semantic segmentation (WSSS) employing weak forms of labels has been actively studied to alleviate the annotation cost of acquiring pixel-level labels. However, classifiers trained on biased datasets tend to exploit…

计算机视觉与模式识别 · 计算机科学 2024-05-29 JuneHyoung Kwon , Eunju Lee , Yunsung Cho , YoungBin Kim

Purpose: In multi-spectral imaging (MSI), several fast spin echo volumes with discrete Larmor frequency offsets are acquired in an interleaved fashion with multiple concatenations. Here, a variable resolution (VR) method to nearly halve…

医学物理 · 物理学 2023-06-06 Nikolai J. Mickevicius , Azadeh Sharafi , Andrew S. Nencka , Kevin M. Koch

Anisotropic multi-slice Cardiac Magnetic Resonance (CMR) Images are conventionally acquired in patient-specific short-axis (SAX) orientation. In specific cardiovascular diseases that affect right ventricular (RV) morphology, acquisitions in…

Background: The hippocampus plays a crucial role in memory and cognition. Because of the associated toxicity from whole brain radiotherapy, more advanced treatment planning techniques prioritize hippocampal avoidance, which depends on an…

Background: Manual delineation of target volumes in head and neck cancer (HNC) remains a significant bottleneck in radiotherapy planning, characterized by high inter-observer variability and time consumption. This study evaluates the…

Audio-Visual Segmentation (AVS) aims to identify, at the pixel level, the object in a visual scene that produces a given sound. Current AVS methods rely on costly fine-grained annotations of mask-audio pairs, making them impractical for…

计算机视觉与模式识别 · 计算机科学 2024-03-22 Swapnil Bhosale , Haosen Yang , Diptesh Kanojia , Jiangkang Deng , Xiatian Zhu

Audio-visual segmentation (AVS) is a challenging task that involves accurately segmenting sounding objects based on audio-visual cues. The effectiveness of audio-visual learning critically depends on achieving accurate cross-modal alignment…

计算机视觉与模式识别 · 计算机科学 2024-08-15 Yuanhong Chen , Yuyuan Liu , Hu Wang , Fengbei Liu , Chong Wang , Helen Frazer , Gustavo Carneiro

In this paper we consider the problem of unsupervised anomaly segmentation in medical images, which has attracted increasing attention in recent years due to the expensive pixel-level annotations from experts and the existence of a large…

图像与视频处理 · 电气工程与系统科学 2021-12-20 Raunak Dey , Wenbo Sun , Haibo Xu , Yi Hong