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Image segmentation, the process of partitioning an image into meaningful regions, plays a pivotal role in computer vision and medical imaging applications. Unsupervised segmentation, particularly in the absence of labeled data, remains a…

计算机视觉与模式识别 · 计算机科学 2024-05-13 Kovvuri Sai Gopal Reddy , Bodduluri Saran , A. Mudit Adityaja , Saurabh J. Shigwan , Nitin Kumar

Medical imaging segmentation plays a significant role in the automatic recognition and analysis of lesions. State-of-the-art methods, particularly those utilizing transformers, have been prominently adopted in 3D semantic segmentation due…

计算机视觉与模式识别 · 计算机科学 2024-08-02 Shengbo Tan , Zeyu Zhang , Ying Cai , Daji Ergu , Lin Wu , Binbin Hu , Pengzhang Yu , Yang Zhao

The brain is a complex organ controlling cognitive process and physical functions. Tumors in the brain are accelerated cell growths affecting the normal function and processes in the brain. MRI scans provides detailed images of the body…

图像与视频处理 · 电气工程与系统科学 2020-03-20 Miriam Zulema Jacobo , Jose Mejia

Purpose: To develop and evaluate a deep learning model for multi-organ segmentation of MRI scans. Materials and Methods: The model was trained on 1,200 manually annotated 3D axial MRI scans from the UK Biobank, 221 in-house MRI scans, and…

Despite the recent success of deep learning methods at achieving new state-of-the-art accuracy for medical image segmentation, some major limitations are still restricting their deployment into clinics. One major limitation of deep…

图像与视频处理 · 电气工程与系统科学 2023-05-30 Lucas Fidon

Automatic image segmentation is a critical component of medical image analysis, and hence quantifying segmentation performance is crucial. Challenges in medical image segmentation are mainly due to spatial variations of regions to be…

图像与视频处理 · 电气工程与系统科学 2021-09-09 Ammu R , Neelam Sinha

Head and Neck (H\&N) organ-at-risk (OAR) and tumor segmentations are essential components of radiation therapy planning. The varying anatomic locations and dimensions of H\&N nodal Gross Tumor Volumes (GTVn) and H\&N primary gross tumor…

图像与视频处理 · 电气工程与系统科学 2022-11-01 Abhishek Srivastava , Debesh Jha , Bulent Aydogan , Mohamed E. Abazeed , Ulas Bagci

As bone and air produce weak signals with conventional MR sequences, segmentation of these tissues particularly difficult in MRI. We propose to integrate patch-based anatomical signatures and an auto-context model into a machine learning…

Precise delineation of organs at risk (OAR) is a crucial task in radiotherapy treatment planning, which aims at delivering high dose to the tumour while sparing healthy tissues. In recent years algorithms showed high performance and the…

计算机视觉与模式识别 · 计算机科学 2017-04-24 Tobias Fechter , Sonja Adebahr , Dimos Baltas , Ismail Ben Ayed , Christian Desrosiers , Jose Dolz

X-ray imaging is the most popular medical imaging technology. While x-ray radiography is rather cost-effective, tissue structures are superimposed along the x-ray paths. On the other hand, computed tomography (CT) reconstructs internal…

医学物理 · 物理学 2021-12-01 Chuang Niu , Ge Wang

This paper proposes an automated method for the segmentation and extraction of the posterior segment of the human eye, including the vitreous, retina, choroid, and sclera compartments, using multi-vendor optical coherence tomography (OCT)…

图像与视频处理 · 电气工程与系统科学 2021-10-19 Bilal Hassan , Taimur Hassan , Ramsha Ahmed , Shiyin Qin , Naoufel Werghi

Magnetic Resonance Imaging (MRI) is the most commonly used non-intrusive technique for medical image acquisition. Brain tumor segmentation is the process of algorithmically identifying tumors in brain MRI scans. While many approaches have…

图像与视频处理 · 电气工程与系统科学 2022-11-04 Jason Walsh , Alice Othmani , Mayank Jain , Soumyabrata Dev

Biomedical image segmentation plays a significant role in computer-aided diagnosis. However, existing CNN based methods rely heavily on massive manual annotations, which are very expensive and require huge human resources. In this work, we…

计算机视觉与模式识别 · 计算机科学 2023-01-13 Ruifei Zhang , Sishuo Liu , Yizhou Yu , Guanbin Li

Image segmentation some of the challenging issues on brain magnetic resonance image tumor segmentation caused by the weak correlation between magnetic resonance imaging intensity and anatomical meaning.With the objective of utilizing more…

计算机视觉与模式识别 · 计算机科学 2014-03-25 Narkhede Sachin G. , Vaishali Khairnar , Sujata Kadu

Cardiac Magnetic Resonance (CMR) imaging is commonly used to assess cardiac structure and function. One disadvantage of CMR is that post-processing of exams is tedious. Without automation, precise assessment of cardiac function via CMR…

计算机视觉与模式识别 · 计算机科学 2017-04-17 Jesse Lieman-Sifry , Matthieu Le , Felix Lau , Sean Sall , Daniel Golden

Physiological signals, such as the electrocardiogram and the phonocardiogram are very often corrupted by noisy sources. Usually, artificial intelligent algorithms analyze the signal regardless of its quality. On the other hand, physicians…

信号处理 · 电气工程与系统科学 2023-04-25 Jorge Oliveira , Margarida Carvalho , Diogo Marcelo Nogueira , Miguel Coimbra

Automatic image segmentation becomes very crucial for tumor detection in medical image processing.In general, manual and semi automatic segmentation techniques require more time and knowledge. However these drawbacks had overcome by…

计算机视觉与模式识别 · 计算机科学 2016-03-09 D. Anithadevi , K. Perumal

Sellar tumors are approximately 10-15% among all intracranial neoplasms. The most common sellar lesion is the pituitary adenoma. Manual segmentation is a time-consuming process that can be shortened by using adequate algorithms. In this…

计算工程、金融与科学 · 计算机科学 2011-03-10 Jan Egger , Miriam H. A. Bauer , Daniela Kuhnt , Bernd Freisleben , Christopher Nimsky

Medical image segmentation is an increasingly popular area of research in medical imaging processing and analysis. However, many researchers who are new to the field struggle with basic concepts. This tutorial paper aims to provide an…

图像与视频处理 · 电气工程与系统科学 2023-04-13 Diedre Carmo , Gustavo Pinheiro , Lívia Rodrigues , Thays Abreu , Roberto Lotufo , Letícia Rittner

In situ synchrotron X-ray computed tomography enables dynamic material studies. However, automated segmentation remains challenging due to complex imaging artefacts - like ring and cupping effects - and limited training data. We present a…