Search Results for author: Ha Q. Nguyen

Found 21 papers, 8 papers with code

Evaluating the impact of an explainable machine learning system on the interobserver agreement in chest radiograph interpretation

no code implementations1 Apr 2023 Hieu H. Pham, Ha Q. Nguyen, Hieu T. Nguyen, Linh T. Le, Khanh Lam

We conducted a prospective study to measure the clinical impact of an explainable machine learning system on interobserver agreement in chest radiograph interpretation.

Improving Object Detection in Medical Image Analysis through Multiple Expert Annotators: An Empirical Investigation

no code implementations29 Mar 2023 Hieu H. Pham, Khiem H. Le, Tuan V. Tran, Ha Q. Nguyen

The work discusses the use of machine learning algorithms for anomaly detection in medical image analysis and how the performance of these algorithms depends on the number of annotators and the quality of labels.

Anomaly Detection object-detection +1

Learning to diagnose common thorax diseases on chest radiographs from radiology reports in Vietnamese

no code implementations11 Sep 2022 Thao T. B. Nguyen, Tam M. Vo, Thang V. Nguyen, Hieu H. Pham, Ha Q. Nguyen

Our best model (CheXpert-pretrained EfficientNet-B2) yields an F1-score of 0. 6989 (95% CI 0. 6740, 0. 7240), AUC of 0. 7912, sensitivity of 0. 7064 and specificity of 0. 8760 for the abnormal diagnosis in general.

Anomaly Detection Specificity

An Accurate and Explainable Deep Learning System Improves Interobserver Agreement in the Interpretation of Chest Radiograph

no code implementations6 Aug 2022 Hieu H. Pham, Ha Q. Nguyen, Hieu T. Nguyen, Linh T. Le, Lam Khanh

For the localization task with 14 types of lesions, our free-response receiver operating characteristic (FROC) analysis showed that the VinDr-CXR achieved a sensitivity of 80. 2% at the rate of 1. 0 false-positive lesion identified per scan.

Slice-level Detection of Intracranial Hemorrhage on CT Using Deep Descriptors of Adjacent Slices

no code implementations MIDL 2019 Dat T. Ngo, Thao T. B. Nguyen, Hieu T. Nguyen, Dung B. Nguyen, Ha Q. Nguyen, Hieu H. Pham

In particular, deep convolutional neural networks (D-CNNs) have been key players and were adopted by the medical imaging community to assist clinicians and medical experts in disease diagnosis and treatment.

Computed Tomography (CT) Medical Diagnosis +1

Phase Recognition in Contrast-Enhanced CT Scans based on Deep Learning and Random Sampling

no code implementations20 Mar 2022 Binh T. Dao, Thang V. Nguyen, Hieu H. Pham, Ha Q. Nguyen

This work aims at developing and validating a precise, fast multi-phase classifier to recognize three main types of contrast phases in abdominal CT scans.

Computed Tomography (CT)

VinDr-Mammo: A large-scale benchmark dataset for computer-aided diagnosis in full-field digital mammography

1 code implementation20 Mar 2022 Hieu T. Nguyen, Ha Q. Nguyen, Hieu H. Pham, Khanh Lam, Linh T. Le, Minh Dao, Van Vu

Mammography, or breast X-ray, is the most widely used imaging modality to detect cancer and other breast diseases.

A Novel Transparency Strategy-based Data Augmentation Approach for BI-RADS Classification of Mammograms

no code implementations20 Mar 2022 Sam B. Tran, Huyen T. X. Nguyen, Chi Phan, Hieu H. Pham, Ha Q. Nguyen

Image augmentation techniques have been widely investigated to improve the performance of deep learning (DL) algorithms on mammography classification tasks.

Classification Image Augmentation

PediCXR: An open, large-scale chest radiograph dataset for interpretation of common thoracic diseases in children

1 code implementation20 Mar 2022 Hieu H. Pham, Ngoc H. Nguyen, Thanh T. Tran, Tuan N. M. Nguyen, Ha Q. Nguyen

To the best of our knowledge, this is the first and largest pediatric CXR dataset containing lesion-level annotations and image-level labels for the detection of multiple findings and diseases.

Learning from Multiple Expert Annotators for Enhancing Anomaly Detection in Medical Image Analysis

1 code implementation20 Mar 2022 Khiem H. Le, Tuan V. Tran, Hieu H. Pham, Hieu T. Nguyen, Tung T. Le, Ha Q. Nguyen

As a result, the labeled data may contain a variety of human biases with a high rate of disagreement among annotators, which significantly affect the performance of supervised machine learning algorithms.

Anomaly Detection

A novel multi-view deep learning approach for BI-RADS and density assessment of mammograms

no code implementations8 Dec 2021 Huyen T. X. Nguyen, Sam B. Tran, Dung B. Nguyen, Hieu H. Pham, Ha Q. Nguyen

The experimental results demonstrate that the proposed approach outperforms the single-view classification approach on two benchmark datasets by huge F1-score margins (+5% on the internal dataset and +10% on the DDSM dataset).

DICOM Imaging Router: An Open Deep Learning Framework for Classification of Body Parts from DICOM X-ray Scans

no code implementations14 Aug 2021 Hieu H. Pham, Dung V. Do, Ha Q. Nguyen

This challenge raises the need for an automated and efficient approach to classifying body parts from X-ray scans.

Learning to Automatically Diagnose Multiple Diseases in Pediatric Chest Radiographs Using Deep Convolutional Neural Networks

no code implementations14 Aug 2021 Thanh T. Tran, Hieu H. Pham, Thang V. Nguyen, Tung T. Le, Hieu T. Nguyen, Ha Q. Nguyen

Chest radiograph (CXR) interpretation in pediatric patients is error-prone and requires a high level of understanding of radiologic expertise.

Specificity

VinDr-RibCXR: A Benchmark Dataset for Automatic Segmentation and Labeling of Individual Ribs on Chest X-rays

1 code implementation3 Jul 2021 Hoang C. Nguyen, Tung T. Le, Hieu H. Pham, Ha Q. Nguyen

We introduce a new benchmark dataset, namely VinDr-RibCXR, for automatic segmentation and labeling of individual ribs from chest X-ray (CXR) scans.

Segmentation

VinDr-SpineXR: A deep learning framework for spinal lesions detection and classification from radiographs

1 code implementation24 Jun 2021 Hieu T. Nguyen, Hieu H. Pham, Nghia T. Nguyen, Ha Q. Nguyen, Thang Q. Huynh, Minh Dao, Van Vu

It demonstrates an area under the receiver operating characteristic curve (AUROC) of 88. 61% (95% CI 87. 19%, 90. 02%) for the image-level classification task and a mean average precision (mAP@0. 5) of 33. 56% for the lesion-level localization task.

Interpreting Chest X-rays via CNNs that Exploit Hierarchical Disease Dependencies and Uncertainty Labels

no code implementations MIDL 2019 Hieu H. Pham, Tung T. Le, Dat T. Ngo, Dat Q. Tran, Ha Q. Nguyen

The chest X-rays (CXRs) is one of the views most commonly ordered by radiologists (NHS), which is critical for diagnosis of many different thoracic diseases.

Interpreting chest X-rays via CNNs that exploit hierarchical disease dependencies and uncertainty labels

2 code implementations15 Nov 2019 Hieu H. Pham, Tung T. Le, Dat Q. Tran, Dat T. Ngo, Ha Q. Nguyen

The performance is on average better than 2. 6 out of 3 other individual radiologists with a mean AUC of 0. 930, which ranks first on the CheXpert leaderboard at the time of writing this paper.

Multi-Label Classification

Learning Convex Regularizers for Optimal Bayesian Denoising

no code implementations16 May 2017 Ha Q. Nguyen, Emrah Bostan, Michael Unser

We propose a data-driven algorithm for the maximum a posteriori (MAP) estimation of stochastic processes from noisy observations.

Denoising

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