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Explainable attention based breast tumor segmentation using a combination of UNet, ResNet, DenseNet, and EfficientNet models.
Sci Rep
January 2025
ADAPT Research Centre, School of Computer Science, University of Galway, Galway, Ireland.
This study utilizes the Breast Ultrasound Image (BUSI) dataset to present a deep learning technique for breast tumor segmentation based on a modified UNet architecture. To improve segmentation accuracy, the model integrates attention mechanisms, such as the Convolutional Block Attention Module (CBAM) and Non-Local Attention, with advanced encoder architectures, including ResNet, DenseNet, and EfficientNet. These attention mechanisms enable the model to focus more effectively on relevant tumor areas, resulting in significant performance improvements.
View Article and Find Full Text PDFIncremental Role of Cardiac CT Angiography in the Assessment of Left Ventricular Diastolic Function in Patients With Suspected Coronary Artery Disease With Normal Ejection Fraction: A Comparison With Transthoracic Echocardiography.
Echocardiography
January 2025
Department of Cardiovascular Radiology and Endovascular Interventions, All India Institute of Medical Sciences, New Delhi, India.
Objective: Diastolic dysfunction (DD) is defined as impaired left ventricular (LV) relaxation, caused by structural or functional heart diseases. We sought to assess the role of cardiac CT angiography (CCTA) as a tool to evaluate LV DD in patients with normal EF using the diastolic expansion index (DEI), as compared to transthoracic echocardiography (TTE) as the gold standard.
Methods: Patients presenting with atypical chest pain with suspected coronary artery disease (CAD) and having a normal LV ejection fraction on TTE underwent CCTA using a dual source CT scanner.
Thoraco-omphalopagus conjoined twins: comprehensive evaluation with sonography and MRI in first trimester-a rare imaging diagnosis.
BJR Case Rep
January 2025
Department of Radiodiagnosis and Imaging, B.P. Koirala Institute of Health Sciences, Dharan, 56700, Nepal.
Conjoined twins, or Siamese twins as they are commonly called, are a rare and extreme form of monochorionic twinning. Imaging plays an essential role in the diagnosis and follow-up of conjoined twins. While ultrasound is often the screening modality of choice, MRI is carried out for better anatomical delineation and further characterization as and when necessary.
View Article and Find Full Text PDFReliability of the OMERACT Giant cell arteritis Ultrasonography Score (OGUS): results of a patient-based exercise involving experts and non-experts in vascular ultrasonography.
RMD Open
January 2025
Rheumatology, Medical University of Graz, Graz, Austria.
Objective: To test the reliability of the Outcome Measures in Rheumatology Giant cell arteritis (GCA) Ultrasonography Score (OGUS) and other composite scores in a patient-based exercise involving experts and non-experts in vascular ultrasonography.
Methods: Six GCA patients were scanned twice (two rounds separated ≥3 hours) by 12 experts and 12 non-experts. Non-experts received 90 min of theoretical and 240 min of practical training between rounds 1 and 2.
Ultrasonic optic nerve sheath diameter as a new predictor for the mortality of patients with large hemispheric infarction.
Sci Rep
January 2025
Neuroscience Center, Department of Neurology, First Hospital of Jilin University, Jilin University, Changchun, China.
Large hemispheric infarction (LHI) is a severe form of stroke with high mortality and poor outcomes. Ultrasonic optic nerve sheath diameter (ONSD) is considered an effective indicator for intracranial hypertension. Our study aimed to validate the efficiency of ultrasonic ONSD and develop a nomogram to identify LHI patients who have 90-day mortality.
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