Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Magnetic Resonance electrical property tomography (MR-EPT) is a non-invasive imaging modality that reconstructs the living biological tissue's conductivity σ and ε permittivity using spatial derivatives of the measured RF field, also termed B1 data, in a magnetic resonance imaging system. The spatial derivative operator, particularly the Laplacian, amplifies the noise in the reconstructed electrical property (EP) maps, hence decreasing accuracy and increasing boundary artifacts. We propose a novel adaptative convolution kernel for generating numerical derivatives based on 3D Savitzky-Golay (SG) filters and local segmentation in a magnitude image. In comparison to typical SG kernel, the proposed kernel allows arbitrary shapes and sizes to vary with local tissue. It provides an automatic trade-off between noise and resolution, thereby significantly enhancing reconstruction accuracy and eliminating boundary artifacts.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1109/EMBC40787.2023.10341200 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Neuroimaging Findings in Children and Young Adults With Neurotoxicity After CAR T-Cell Therapy for B-Cell Malignancies.
Neurology
October 2025
Norcliffe Foundation Center for Integrative Brain Research, Seattle Children's Research Institute, WA.
Background And Objectives: Neuroimaging findings in immune effector cell-associated neurotoxicity syndrome (ICANS) have not been systematically described. We created the chimeric antigen receptor (CAR) T-cell Neurotoxicity Imaging Virtual Archive Library (CARNIVAL), a centralized imaging database for children and young adults receiving CAR T-cell therapy. Objectives of this study were to (1) characterize neuroimaging findings associated with ICANS and (2) determine whether specific ICANS-related neuroimaging findings are associated with individual neurologic symptoms.
View Article and Find Full Text PDFAdipose Tissue in and Around the Heart: Structural and Functional Insights From Cardiac Magnetic Resonance.
Circulation
September 2025
Cardiology Unit, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Italy (M.P.M).
Cardiac adipose tissue is normally present in the epicardium, but a variable amount can also be present in the myocardium, particularly in the subepicardial regions of the right ventricular anterolateral and apical regions. Pathological adipose tissue changes may occur in both ischemic (previous myocardial infarction) and nonischemic (previous myocarditis, arrhythmogenic cardiomyopathy, lipomatous hypertrophy of the interatrial septum, cardiac lipomas and liposarcomas) conditions, with or without extensive replacement-type myocardial fibrosis. Cardiac magnetic resonance is the gold standard imaging technique to characterize myocardial tissue changes and to distinguish between physiological and pathological cardiac fat deposits.
View Article and Find Full Text PDFEpiduroscopy in spinal stenosis. Description of the procedure and safety measures to reduce complications.
Pain Manag
September 2025
Pain Management Unit, Hospital Universitario Quirónsalud Madrid, Madrid, Spain.
Aims: The aim of this observational study is to describe the use of epiduroscopy to decrease the enlargement of the ligamentum flavum (LF) in patients with spinal stenosis, as well as the selection of the appropriate patient and the safety measures that enhance procedural success.
Materials & Methods: We introduce the patient selection protocol, define the appropriate indication and the safety measures to use the epiduroscopy as a tool to decrease the size of the LF and increase space, reducing possible complications.
Results: Among patients included in the study, there were no cases of access difficulty or coccydynia, and one case of urinary incontinence occurred in a patient with Schizas grade D (very severe) stenosis.
Chikungunya infection complicated by encephalitis and rhabdomyolysis.
Trop Doct
September 2025
Additional Professor, Department of Radiodiagnosis, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
Chikungunya virus (CHIKV) typically causes febrile illness and arthralgia. However, severe complications such as encephalitis, rhabdomyolysis, and multiorgan dysfunction are increasingly recognised, particularly during epidemics in endemic regions. We report a case of a 61-year old male presenting with progressive flaccid paraparesis and respiratory failure following febrile illness.
View Article and Find Full Text PDFGadolinium-Enhanced Aneurysm Wall Imaging and Risk of Intracranial Aneurysm Growth or Rupture.
JAMA Neurol
September 2025
Department of Radiology, University of Washington, Seattle.
Importance: Recent longitudinal studies in patients with unruptured intracranial aneurysms (UIAs) suggested that aneurysm wall enhancement (AWE) on magnetic resonance imaging (MRI) predicts growth and rupture. However, because these studies were limited by small sample size and short follow-up duration, it remains unclear whether this radiological biomarker has predictive value for UIA instability.
Objective: To determine the 4-year risk of instability of UIAs with AWE and investigate whether AWE is an independent predictor of UIA instability.