B-mode ultrasound is commonly used to image musculoskeletal tissues, but one major bottleneck is data interpretation, and analyses of muscle thickness, pennation angle and fascicle length are often still performed manually. In this study we trained deep neural networks (based on U-net) to detect muscle fascicles and aponeuroses using a set of labelled musculoskeletal ultrasound images. We then compared neural network predictions on new, unseen images to those obtained via manual analysis and two existing semi/automated analysis approaches (SMA and Ultratrack). With a GPU, inference time for a single image with the new approach was around 0.7s, compared to 4.6s with a CPU. Our method detects the locations of the superficial and deep aponeuroses, as well as multiple fascicle fragments per image. For single images, the method gave similar results to those produced by a non-trainable automated method (SMA; mean difference in fascicle length: 1.1 mm) or human manual analysis (mean difference: 2.1 mm). Between-method differences in pennation angle were within 1$^\circ$, and mean differences in muscle thickness were less than 0.2 mm. Similarly, for videos, there was strong overlap between the results produced with Ultratrack and our method, with a mean ICC of 0.73, despite the fact that the analysed trials included hundreds of frames. Our method is fully automated and open source, and can estimate fascicle length, pennation angle and muscle thickness from single images or videos, as well as from multiple superficial muscles. We also provide all necessary code and training data for custom model development.
Objective: To test automated in vivo estimation of active and passive skeletal muscle states using ultrasonic imaging. Background: Current technology (electromyography, dynamometry, shear wave imaging) provides no general, non-invasive method for online estimation of skeletal intramuscular states. Ultrasound (US) allows non-invasive imaging of muscle, yet current computational approaches have never achieved simultaneous extraction nor generalisation of independently varying, active and passive states. We use deep learning to investigate the generalizable content of 2D US muscle images. Method:…
College of Science and Engineering, James Cook University(詹姆斯·库克大学理工学院);McGill University(麦吉尔大学);Element AI(Element AI公司);College of Healthcare Sciences, James Cook University(詹姆斯·库克大学健康科学学院)
Health professionals extensively use Two- Dimensional (2D) Ultrasound (US) videos and images to visualize and measure internal organs for various purposes including evaluation of muscle architectural changes. US images can be used to measure abdominal muscles dimensions for the diagnosis and creation of customized treatment plans for patients with Low Back Pain (LBP), however, they are difficult to interpret. Due to high variability, skilled professionals with specialized training are required to take measurements to avoid low intra-observer reliability. This variability stems from the challen…
University of Twente(特文特大学);Jönköping University(延雪平大学)
The prevalance of pelvic floor problems is high within the female population. Transperineal ultrasound (TPUS) is the main imaging modality used to investigate these problems. Automating the analysis of TPUS data will help in growing our understanding of pelvic floor related problems. In this study we present a U-net like neural network with some convolutional long short term memory (CLSTM) layers to automate the 3D segmentation of the levator ani muscle (LAM) in TPUS volumes. The CLSTM layers are added to preserve the inter-slice 3D information. We reach human level performance on this segment…
In vivo measurements of muscle architecture (i.e. the spatial arrangement of muscle fascicles) are routinely included in research and clinical settings to monitor muscle structure, function and plasticity. However, in most cases such measurements are performed manually, and more reliable and time-efficient automated methods are either lacking completely, or are inaccessible to those without expertise in image analysis. In this work, we propose an ImageJ script to automate the entire analysis process of muscle architecture in ultrasound images: Simple Muscle Architecture Analysis (SMA). Images …
Carnegie Mellon University(卡内基梅隆大学);University of Pittsburgh Medical Center(匹兹堡大学医学中心);Cosmetic Surgery Facility LLC(美容外科机构有限责任公司)
We present W-Net, a novel Convolution Neural Network (CNN) framework that employs raw ultrasound waveforms from each A-scan, typically referred to as ultrasound Radio Frequency (RF) data, in addition to the gray ultrasound image to semantically segment and label tissues. Unlike prior work, we seek to label every pixel in the image, without the use of a background class. To the best of our knowledge, this is also the first deep-learning or CNN approach for segmentation that analyses ultrasound raw RF data along with the gray image. International patent(s) pending [PCT/US20/37519]. We chose subc…
Ultrasound imaging provides information from a large part of the muscle. It has recently been shown that ultrafast ultrasound imaging can be used to record and analyze the mechanical response of individual MUs using blind source separation. In this work, we present an alternative method - a deep learning pipeline - to identify active MUs in ultrasound image sequences, including segmentation of their territories and signal estimation of their mechanical responses (twitch train). We train and evaluate the model using simulated data mimicking the complex activation pattern of tens of activated MU…
Iowa Institute for Biomedical Imaging(爱荷华生物医学成像研究所);University of Iowa(爱荷华大学)
Automated segmentation of individual calf muscle compartments from 3D magnetic resonance (MR) images is essential for developing quantitative biomarkers for muscular disease progression and its prediction. Achieving clinically acceptable results is a challenging task due to large variations in muscle shape and MR appearance. Although deep convolutional neural networks (DCNNs) achieved improved accuracy in various image segmentation tasks, certain problems such as utilizing long-range information and incorporating high-level constraints remain unsolved. We present a novel fully convolutional ne…
Imperial College London(伦敦帝国理工学院);Hammersmith Hospital(哈默史密斯医院);Imperial College Healthcare NHS Trust(帝国理工学院医疗保健国民保健服务信托基金)
Objective: To demonstrate the effectiveness of using a deep learning-based approach for a fully automated slice-based measurement of muscle mass for assessing sarcopenia on CT scans of the abdomen without any case exclusion criteria. Materials and Methods: This retrospective study was conducted using a collection of public and privately available CT images (n = 1070). The method consisted of two stages: slice detection from a CT volume and single-slice CT segmentation. Both stages used Fully Convolutional Neural Networks (FCNN) and were based on a UNet-like architecture. Input data consisted o…
Cochin University of Science and Technology(科钦科技大学);Indian Institute of Technology Palakkad(帕拉卡德印度理工学院)
In the recent past with the rapid surge of COVID-19 infections, lung ultrasound has emerged as a fast and powerful diagnostic tool particularly for continuous and periodic monitoring of the lung. There have been many attempts towards severity classification, segmentation and detection of key landmarks in the lung. Leveraging the progress, an automated lung ultrasound video analysis package is presented in this work, which can provide summary of key frames in the video, flagging of the key frames with lung infection and options to automatically detect and segment the lung landmarks. The integra…
Imperial College London(伦敦帝国学院);King’s College London(伦敦国王学院);St Thomas’ Hospital(圣托马斯医院)
Prenatal screening with ultrasound can lower neonatal mortality significantly for selected cardiac abnormalities. However, the need for human expertise, coupled with the high volume of screening cases, limits the practically achievable detection rates. In this paper we discuss the potential for deep learning techniques to aid in the detection of congenital heart disease (CHD) in fetal ultrasound. We propose a pipeline for automated data curation and classification. During both training and inference, we exploit an auxiliary view classification task to bias features toward relevant cardiac stru…
Nara Institute of Science and Technology(奈良先端科学技术大学院大学);Osaka University Graduate School of Medicine(大阪大学医学研究生院)
We propose a method for automatic segmentation of individual muscles from a clinical CT. The method uses Bayesian convolutional neural networks with the U-Net architecture, using Monte Carlo dropout that infers an uncertainty metric in addition to the segmentation label. We evaluated the performance of the proposed method using two data sets: 20 fully annotated CTs of the hip and thigh regions and 18 partially annotated CTs that are publicly available from The Cancer Imaging Archive (TCIA) database. The experiments showed a Dice coefficient (DC) of 0.891 +/- 0.016 (mean +/- std) and an average…
Nara Institute of Science and Technology(奈良先端科学技术大学院大学);Osaka University(大阪大学)
In total hip arthroplasty, analysis of postoperative medical images is important to evaluate surgical outcome. Since Computed Tomography (CT) is most prevalent modality in orthopedic surgery, we aimed at the analysis of CT image. In this work, we focus on the metal artifact in postoperative CT caused by the metallic implant, which reduces the accuracy of segmentation especially in the vicinity of the implant. Our goal was to develop an automated segmentation method of the bones and muscles in the postoperative CT images. We propose a method that combines Normalized Metal Artifact Reduction (NM…
National Research Council Canada(加拿大国家研究委员会);University of Waterloo(滑铁卢大学)
Besides vaccination, as an effective way to mitigate the further spread of COVID-19, fast and accurate screening of individuals to test for the disease is yet necessary to ensure public health safety. We propose COVID-Net UV, an end-to-end hybrid spatio-temporal deep neural network architecture, to detect COVID-19 infection from lung point-of-care ultrasound videos captured by convex transducers. COVID-Net UV comprises a convolutional neural network that extracts spatial features and a recurrent neural network that learns temporal dependence. After careful hyperparameter tuning, the network ac…
Automated Muscle and Fat Segmentation in Computed Tomography for Comprehensive Body Composition Analysis
Department of Electrical and Computer Engineering, Duke University(杜克大学电气与计算机工程系);Department of Radiology, Duke University(杜克大学放射学系);Department of Surgery Duke University School of Medicine(杜克大学医学学院外科系);Department of Biostatistics & Bioinformatics, Duke University(杜克大学生物统计学与生物信息学系);Department of Computer Science, Duke University(杜克大学计算机科学系)
Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford(牛津大学工程科学系生物医学工程研究所);Nuffield Department of Obstetrics and Gynaecology, John Radcliffe Hospital, University of Oxford(牛津大学约翰拉德克利夫医院妇产科);Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford(牛津大学李兆基健康信息与发现中心大数据研究所)
To improve the performance of most neuroimiage analysis pipelines, brain extraction is used as a fundamental first step in the image processing. But in the case of fetal brain development, there is a need for a reliable US-specific tool. In this work we propose a fully automated 3D CNN approach to fetal brain extraction from 3D US clinical volumes with minimal preprocessing. Our method accurately and reliably extracts the brain regardless of the large data variation inherent in this imaging modality. It also performs consistently throughout a gestational age range between 14 and 31 weeks, rega…
AGE-US: automated gestational age estimation based on fetal ultrasound images
Centro Singular de Investigación en Tecnoloxías Intelixentes (CiTIUS)(智能技术研究中心(CiTIUS));Universidade de Santiago de Compostela(圣地亚哥大学);Departamento de Electrónica e Computación, Escola Técnica Superior de Enxeñaría(电子与计算系,工程技术学校);Universitat Pompeu Fabra(庞培法布拉大学)
GE Vingmed Ultrasound, GE Healthcare(通用电气医疗集团GE Vingmed超声部门);University of Oslo(奥斯陆大学);Norwegian Computing Center(挪威计算中心)
Two-dimensional echocardiography (2DE) measurements of left ventricle (LV) dimensions are highly significant markers of several cardiovascular diseases. These measurements are often used in clinical care despite suffering from large variability between observers. This variability is due to the challenging nature of accurately finding the correct temporal and spatial location of measurement endpoints in ultrasound images. These images often contain fuzzy boundaries and varying reflection patterns between frames. In this work, we present a convolutional neural network (CNN) based approach to aut…
School of Computer Science and Technology, Harbin Institute of Technology(哈尔滨工业大学计算机科学与技术学院);National University of Singapore(新加坡国立大学);Shenzhen University(深圳大学);School of Biomedical Engineering and Informatics, Nanjing Medical University(南京医科大学生物医学工程与信息学院);Pohang University of Science and Technology (POSTECH)(浦项科技大学);German Cancer Research Center (DKFZ)(德国癌症研究中心);Heidelberg University(海德堡大学);Helmholtz Imaging(亥姆霍兹成像机构)
Breast cancer is one of the most common causes of death among women worldwide. Early detection helps in reducing the number of deaths. Automated 3D Breast Ultrasound (ABUS) is a newer approach for breast screening, which has many advantages over handheld mammography such as safety, speed, and higher detection rate of breast cancer. Tumor detection, segmentation, and classification are key components in the analysis of medical images, especially challenging in the context of 3D ABUS due to the significant variability in tumor size and shape, unclear tumor boundaries, and a low signal-to-noise r…
The assessment of the blood volume is crucial for the management of many acute and chronic diseases. Recent studies have shown that circulating blood volume correlates with the cross-sectional area (CSA) of the internal jugular vein (IJV) estimated from ultrasound imagery. In this paper, a semi-automatic segmentation algorithm is proposed using a combination of region growing and active contour techniques to provide a fast and accurate segmentation of IJV ultrasound videos. The algorithm is applied to track and segment the IJV across a range of image qualities, shapes, and temporal variation. …
MonoUNet: A Robust Tiny Neural Network for Automated Knee Cartilage Segmentation on Point-of-Care Ultrasound Devices
School of Biomedical Engineering, The University of British Columbia(生物医学工程学院,不列颠哥伦比亚大学);Department of Kinesiology, Michigan State University(运动科学系,密歇根州立大学);Department of Rheumatology, The University of British Columbia(风湿病学系,不列颠哥伦比亚大学);Department of Radiology, The University of British Columbia(放射学系,不列颠哥伦比亚大学);Department of Medicine, The University of British Columbia(医学系,不列颠哥伦比亚大学)
Korea University(高丽大学);Korea Basic Science Institute(韩国基础科学研究院);Korea Artificial Organ Center(韩国人工器官中心);ICT Convergence Technology for Health and Safety(健康安全信息通信融合技术);Department of Electronics and Information Engineering(电子与信息工程系);Bioimaging Research Team(生物成像研究团队)
Purpose: To acquire the real-time interactive temperature map for aqueous and adipose tissue, the problems of long acquisition and processing time must be addressed. To overcome these major challenges, this paper proposes a cascaded convolutional neural network (CNN) framework and multi-echo gradient echo (meGRE) with a single reference variable flip angle (srVFA). Methods: To optimize the echo times for each method, MR images are acquired using a meGRE sequence; meGRE images with two flip angles (FAs) and meGRE images with a single FA are acquired during the pretreatment and treatment stages,…
University of Delaware(特拉华大学);University of Guilan(吉兰大学);Eindhoven University of Technology(埃因霍温理工大学);Iran University of Science and Technology(伊朗科学技术大学)
Automated 3-D breast ultrasound (ABUS) is a newfound system for breast screening that has been proposed as a supplementary modality to mammography for breast cancer detection. While ABUS has better performance in dense breasts, reading ABUS images is exhausting and time-consuming. So, a computer-aided detection system is necessary for interpretation of these images. Mass segmentation plays a vital role in the computer-aided detection systems and it affects the overall performance. Mass segmentation is a challenging task because of the large variety in size, shape, and texture of masses. Moreov…
Shenzhen University(深圳大学);Guangdong Province Traditional Chinese Medical Hospital(广东省中医院)
Automated breast ultrasound (ABUS) is a new and promising imaging modality for breast cancer detection and diagnosis, which could provide intuitive 3D information and coronal plane information with great diagnostic value. However, manually screening and diagnosing tumors from ABUS images is very time-consuming and overlooks of abnormalities may happen. In this study, we propose a novel two-stage 3D detection network for locating suspected lesion areas and further classifying lesions as benign or malignant tumors. Specifically, we propose a 3D detection network rather than frequently-used segme…
Applications of ultrasound images have expanded from fetal imaging to abdominal and cardiac diagnosis. Liver-being the largest gland in the body and responsible for metabolic activities requires to be to be diagnosed and therefore subject to utmost injury. Although, ultrasound imaging has developed into three and four dimensions providing higher amount of information; it requires highly trained medical staff due to the image complexity and dimensions it contain. Since 2D ultrasound images are still considered to be the basis of clinical treatments,computer aided automated liver diagnosis is ve…
Graz University of Technology(格拉茨技术大学);University of Graz(格拉茨大学)
Recording muscle tendon junction displacements during movement, allows separate investigation of the muscle and tendon behaviour, respectively. In order to provide a fully-automatic tracking method, we employ a novel deep learning approach to detect the position of the muscle tendon junction in ultrasound images. We utilize the attention mechanism to enable the network to focus on relevant regions and to obtain a better interpretation of the results. Our data set consists of a large cohort of 79 healthy subjects and 28 subjects with movement limitations performing passive full range of motion …
Body tissue composition is a long-known biomarker with high diagnostic and prognostic value in cardiovascular, oncological and orthopaedic diseases, but also in rehabilitation medicine or drug dosage. In this study, the aim was to develop a fully automated, reproducible and quantitative 3D volumetry of body tissue composition from standard CT examinations of the abdomen in order to be able to offer such valuable biomarkers as part of routine clinical imaging. Therefore an in-house dataset of 40 CTs for training and 10 CTs for testing were fully annotated on every fifth axial slice with five di…
In this study, we combine a standardized acquisition protocol with image analysis algorithms to investigate if it is possible to automatically detect maternal risk factors without a trained sonographer. The standardized acquisition protocol can be taught to any health care worker within two hours. This protocol was acquired from 280 pregnant women at St.\ Luke's Catholic Hospital, Wolisso, Ethiopia. A VGG-like network was used to perform a frame classification for each frame within the acquired ultrasound data. This frame classification was used to automatically determine the number of fetuses…
One-Stop Automated Diagnostic System for Carpal Tunnel Syndrome in Ultrasound Images Using Deep Learning
The Second People’s Hospital of Shenzhen(深圳市第二人民医院);The First Affiliated Hospital of Shenzhen University(深圳大学第一附属医院);Shenzhen University Health Science Center(深圳大学医学部);Shenzhen University(深圳大学);The University of Hong Kong-Shenzhen Hospital(香港大学深圳医院)
University of Florida(佛罗里达大学);US Anesthesia Partners(美国麻醉伙伴公司)
Automated object recognition in medical images can facilitate medical diagnosis and treatment. In this paper, we automatically segmented supraclavicular nerves in ultrasound images to assist in injecting peripheral nerve blocks. Nerve blocks are generally used for pain treatment after surgery, where ultrasound guidance is used to inject local anesthetics next to target nerves. This treatment blocks the transmission of pain signals to the brain, which can help improve the rate of recovery from surgery and significantly decrease the requirement for postoperative opioids. However, Ultrasound Guid…
Politecnico di Milano(米兰理工大学);Istituto Italiano di Tecnologia(意大利技术研究院);Università Politecnica delle Marche(马尔凯理工大学)
Breast cancer is one of the deadliest cancer worldwide. Timely detection could reduce mortality rates. In the clinical routine, classifying benign and malignant tumors from ultrasound (US) imaging is a crucial but challenging task. An automated method, which can deal with the variability of data is therefore needed. In this paper, we compared different Convolutional Neural Networks (CNNs) and transfer learning methods for the task of automated breast tumor classification. The architectures investigated in this study were VGG-16 and Inception V3. Two different training strategies were investiga…
Universidad Nacional Mayor de San Marcos(圣马科斯国立大学);Universidad Nacional de Ingeniería(国立工程大学)
The new coronavirus 2019 (COVID-2019) has rapidly become a pandemic and has had a devastating effect on both everyday life, public health and the global economy. It is critical to detect positive cases as early as possible to prevent the further spread of this epidemic and to treat affected patients quickly. The need for auxiliary diagnostic tools has increased as accurate automated tool kits are not available. This paper presents a work in progress that proposes the analysis of images of lung ultrasound scans using a convolutional neural network. The trained model will be used on a Raspberry …
Automated Fetal Biometry Assessment with Deep Ensembles using Sparse-Sampling of 2D Intrapartum Ultrasound Images
Oxford Machine Learning in NeuroImaging Lab, Department of Computer Science, University of Oxford(牛津大学计算机科学系);Visual Geometry Group, Department of Engineering Science, University of Oxford(牛津大学工程科学系);College of Computing and Data Science, Nanyang Technological University(南洋理工大学计算科学与数据科学学院)
A novel framework for fully-automated co-registration of intravascular ultrasound and optical coherence tomography imaging data
Barts Health NHS Trust(巴茨健康国民医疗服务信托);Huazhong University of Science and Technology(华中科技大学);Queen Mary, University of London(伦敦玛丽女王大学);Queen Mary University London(伦敦玛丽女王大学);University College London(伦敦大学学院);Leiden University Medical Center(莱顿大学医学中心);University of Bern(伯尔尼大学)
Universidad Nacional Mayor de San Marcos(圣马科斯国立大学);Universidad Nacional de Ingeniería(国立工程大学)
The COVID-19 pandemic started in China in December 2019 and quickly spread to several countries. The consequences of this pandemic are incalculable, causing the death of millions of people and damaging the global economy. To achieve large-scale control of this pandemic, fast tools for detection and treatment of patients are needed. Thus, the demand for alternative tools for the diagnosis of COVID-19 has increased dramatically since accurated and automated tools are not available. In this paper we present the ongoing work on a system for COVID-19 detection using ultrasound imaging and using Dee…
New York University(纽约大学);Riverside Research(河滨研究公司);New York University School of Medicine(纽约大学医学院)
Volumetric analysis of brain ventricle (BV) structure is a key tool in the study of central nervous system development in embryonic mice. High-frequency ultrasound (HFU) is the only non-invasive, real-time modality available for rapid volumetric imaging of embryos in utero. However, manual segmentation of the BV from HFU volumes is tedious, time-consuming, and requires specialized expertise. In this paper, we propose a novel deep learning based BV segmentation system for whole-body HFU images of mouse embryos. Our fully automated system consists of two modules: localization and segmentation. I…
Multistep Automated Data Labelling Procedure (MADLaP) for Thyroid Nodules on Ultrasound: An Artificial Intelligence Approach for Automating Image Annotation
Duke University(杜克大学);Duke University Medical Center(杜克大学医学中心)
A multitask framework for automated interpretation of multi-frame right upper quadrant ultrasound in clinical decision support
University of Colorado Anschutz Medical Campus(科罗拉多大学安舒茨医学校区);Second Xiangya Hospital, Central South University(中南大学湘雅二医院);Brown University(布朗大学);Brown University Health(布朗大学健康);Colorado School of Public Health(科罗拉多大学公共卫生学院);Johns Hopkins University School of Medicine(约翰斯·霍普金斯大学医学院)
Expert-Agnostic Ultrasound Image Quality Assessment using Deep Variational Clustering
All India Institute of Medical Sciences (AIIMS)(全印医学科学学院);Purdue University (PU)(普渡大学);Indian Institute of Technology (IIT)(印度理工学院);Berea College(伯里亚学院)
University of Michigan(密歇根大学);University of California San Diego(加州大学圣迭戈分校)
For speech research, ultrasound tongue imaging provides a non-invasive means for visualizing tongue position and movement during articulation. Extracting tongue contours from ultrasound images is a basic step in analyzing ultrasound data but this task often requires non-trivial manual annotation. This study presents an open source tool for fully automatic tracking of tongue contours in ultrasound frames using neural network based methods. We have implemented and systematically compared two convolutional neural networks, U-Net and DenseU-Net, under different conditions. Though both models can p…
UltraSam: A Foundation Model for Ultrasound using Large Open-Access Segmentation Datasets
University of Strasbourg, CNRS, INSERM, ICube, UMR7357, Strasbourg, France(斯特拉斯堡大学,法国国家科学研究中心,法国国家卫生研究院,ICube,UMR7357,斯特拉斯堡,法国);IHU-Strasbourg, Institute of Image-Guided Surgery, Strasbourg, France(斯特拉斯堡IHU,影像引导手术研究所,斯特拉斯堡,法国)
East Delta University(东三角洲大学);University of Chittagong(吉大港大学)
Breast cancer has become a symbol of tremendous concern in the modern world, as it is one of the major causes of cancer mortality worldwide. In this regard, breast ultrasonography images are frequently utilized by doctors to diagnose breast cancer at an early stage. However, the complex artifacts and heavily noised breast ultrasonography images make diagnosis a great challenge. Furthermore, the ever-increasing number of patients being screened for breast cancer necessitates the use of automated end-to-end technology for highly accurate diagnosis at a low cost and in a short time. In this conce…
Objective. This work investigates the use of deep convolutional neural networks (CNN) to automatically perform measurements of fetal body parts, including head circumference, biparietal diameter, abdominal circumference and femur length, and to estimate gestational age and fetal weight using fetal ultrasound videos. Approach. We developed a novel multi-task CNN-based spatio-temporal fetal US feature extraction and standard plane detection algorithm (called FUVAI) and evaluated the method on 50 freehand fetal US video scans. We compared FUVAI fetal biometric measurements with measurements made …
Lung ultrasound (LUS) is an important imaging modality used by emergency physicians to assess pulmonary congestion at the patient bedside. B-line artifacts in LUS videos are key findings associated with pulmonary congestion. Not only can the interpretation of LUS be challenging for novice operators, but visual quantification of B-lines remains subject to observer variability. In this work, we investigate the strengths and weaknesses of multiple deep learning approaches for automated B-line detection and localization in LUS videos. We curate and publish, BEDLUS, a new ultrasound dataset compris…