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We present a fully automated method for top-down segmentation of the pulmonary arterial tree in low-dose thoracic CT images. The main basal pulmonary arteries are identified near the lung hilum by searching for candidate vessels adjacent to…

计算机视觉与模式识别 · 计算机科学 2011-06-28 Jeremiah Wala , Sergei Fotin , Jaesung Lee , Artit Jirapatnakul , Alberto Biancardi , Anthony Reeves

Purpose: Radio-frequency ablations play an important role in the therapy of malignant liver lesions. The navigation of a needle to the lesion poses a challenge for both the trainees and intervening physicians. Methods: This publication…

医学物理 · 物理学 2019-07-18 Niclas Kath , Heinz Handels , Andre Mastmeyer

Segmenting left atrium in MR volume holds great potentials in promoting the treatment of atrial fibrillation. However, the varying anatomies, artifacts and low contrasts among tissues hinder the advance of both manual and automated…

计算机视觉与模式识别 · 计算机科学 2018-12-17 Xin Yang , Na Wang , Yi Wang , Xu Wang , Reza Nezafat , Dong Ni , Pheng-Ann Heng

Significance: Late gadolinium enhanced magnetic resonance imaging (LGE-MRI) is the gold standard technique for myocardial viability assessment. Although the technique accurately reflects the damaged tissue, there is no clinical standard for…

计算机视觉与模式识别 · 计算机科学 2022-04-27 Ezequiel de la Rosa , Désiré Sidibé , Thomas Decourselle , Thibault Leclercq , Alexandre Cochet , Alain Lalande

The clinical management of several cardiovascular conditions, such as pulmonary hypertension, require the assessment of the right ventricular (RV) function. This work addresses the fully automatic and robust access to one of the key RV…

计算机视觉与模式识别 · 计算机科学 2018-10-10 Nicoló Savioli , Miguel Silva Vieira , Pablo Lamata , Giovanni Montana

Quantification of cardiac motion with cine Cardiac Magnetic Resonance Imaging (CMRI) is an integral part of arrhythmogenic right ventricular cardiomyopathy (ARVC) diagnosis. Yet, the expert evaluation of motion abnormalities with CMRI is a…

图像与视频处理 · 电气工程与系统科学 2023-11-27 Laura Alvarez-Florez , Jörg Sander , Mimount Bourfiss , Fleur V. Y. Tjong , Birgitta K. Velthuis , Ivana Išgum

Percutaneous radiofrequency ablation (RFA) is a minimally invasive technique that destroys cancer cells by heat. The heat results from focusing energy in the radiofrequency spectrum through a needle. Amongst others, this can enable the…

In quantitative Magnetic Resonance Imaging, traditional methods suffer from the so-called Partial Volume Effect (PVE) due to spatial resolution limitations. As a consequence of PVE, the parameters of the voxels containing more than one…

图像与视频处理 · 电气工程与系统科学 2019-07-30 Roberto Duarte , Audrey Repetti , Pedro A. Gómez , Mike Davies , Yves Wiaux

Visualizing disease-induced scarring and fibrosis in the heart on cardiac magnetic resonance (CMR) imaging with contrast enhancement (LGE) is paramount in characterizing disease progression and quantifying pathophysiological substrates of…

图像与视频处理 · 电气工程与系统科学 2021-01-12 Haley G. Abramson , Dan M. Popescu , Rebecca Yu , Changxin Lai , Julie K. Shade , Katherine C. Wu , Mauro Maggioni , Natalia A. Trayanova

CT image-guided thermal ablation is widely used for lung cancer treatment; however, follow-up data indicate that physicians' subjective assessments of intraoperative images often overestimate the ablation effect, potentially leading to…

计算机视觉与模式识别 · 计算机科学 2025-04-09 Wan Li , Wei Li , Moheng Rong , Yutao Rao , Hui Tang , Yudong Zhang , Feng Wang

Pulmonary Hypertension (PH) is a severe disease characterized by an elevated pulmonary artery pressure. The gold standard for PH diagnosis is measurement of mean Pulmonary Artery Pressure (mPAP) during an invasive Right Heart…

图像与视频处理 · 电气工程与系统科学 2023-12-25 Michal K. Grzeszczyk , Tadeusz Satlawa , Angela Lungu , Andrew Swift , Andrew Narracott , Rod Hose , Tomasz Trzcinski , Arkadiusz Sitek

Surgical ablation (SA) is the most effective procedure to terminate atrial fibrillation (AF) in patients requiring concomitant open heart surgery. However, considering the great stress provoked in the patients heart, along with the benefits…

信号处理 · 电气工程与系统科学 2024-01-22 Juan Rodenas , Pilar Escribano , Miguel Martinez-Iniesta , Manuel Garcia , Fernando Hornero , Jose J Rieta , Raul Alcaraz

Atrial fibrillation (AF) is a common cardiac arrhythmia with serious health consequences if not detected and treated early. Detecting AF using wearable devices with photoplethysmography (PPG) sensors and deep neural networks has…

信号处理 · 电气工程与系统科学 2023-11-14 Cheng Ding , Zhicheng Guo , Cynthia Rudin , Ran Xiao , Amit Shah , Duc H. Do , Randall J Lee , Gari Clifford , Fadi B Nahab , Xiao Hu

The severity of atrial fibrillation (AF) can be assessed from intra-operative epicardial measurements (high-resolution electrograms), using metrics such as conduction block (CB) and continuous conduction delay and block (cCDCB). These…

Reducing the scanning time of very-low field (VLF) magnetic resonance imaging (MRI) scanners, commonly employed for stroke diagnosis, can enhance patient comfort and operational efficiency. The conventional parallel imaging (PI) technique…

医学物理 · 物理学 2025-12-24 Lei Yang , Wei He , Sheng Shen , Yucheng He , Jiamin Wu , Zheng Xu

Efficient automatic segmentation of multi-level (i.e. main and branch) pulmonary arteries (PA) in CTPA images plays a significant role in clinical applications. However, most existing methods concentrate only on main PA or branch PA…

Accurate segmentation of the Left Ventricle (LV) holds substantial importance due to its implications in disease detection, regional analysis, and the development of complex models for cardiac surgical planning. CMR is a golden standard for…

图像与视频处理 · 电气工程与系统科学 2024-07-31 Maria Tamoor , Abbas Raza Ali , Philemon Philip , Ruqqayia Adil , Rabia Shahid , Asma Naseer

This study aims to mitigate these biases and enhance QA analysis by applying a path-length correction (PLC) correction, followed by singular value decomposition (SVD)-based deconvolution, to angiograms obtained through both in-silico and…

Atrial fibrillation (AF) is a common cardiac arrhythmia and a major risk factor for ischemic stroke. Early detection of AF using non-invasive signals can enable timely intervention. In this work, we present a comprehensive machine learning…

计算机与社会 · 计算机科学 2026-02-23 Ankit Singh , Vidhi Thakur , Nachiket Tapas

We present a variational message passing (VMP) approach to detect the presence of a person based on their respiratory chest motion using multistatic ultra-wideband (UWB) radar. In the process, the respiratory motion is estimated for…

信号处理 · 电气工程与系统科学 2022-11-01 Jakob Möderl , Erik Leitinger , Franz Pernkopf , Klaus Witrisal