A5071424956- Cardiac Imaging and Diagnostics
- Coronary Interventions and Diagnostics
- Radiation Dose and Imaging
- Advanced X-ray and CT Imaging
- Acute Myocardial Infarction Research
- Advanced MRI Techniques and Applications
- Cardiac Valve Diseases and Treatments
- Image and Object Detection Techniques
- Medical Image Segmentation Techniques
- Cardiovascular Disease and Adiposity
- Colorectal Cancer Screening and Detection
- Advanced Neural Network Applications
- Venous Thromboembolism Diagnosis and Management
- Medical Imaging Techniques and Applications
- Ultrasound in Clinical Applications
- Vestibular and auditory disorders
- Medical Imaging and Analysis
- Aortic Disease and Treatment Approaches
- Photoacoustic and Ultrasonic Imaging
- Infectious Aortic and Vascular Conditions
- Photodynamic Therapy Research Studies
- Aortic aneurysm repair treatments
- Laser Applications in Dentistry and Medicine
- Cardiovascular Health and Disease Prevention
- Ear Surgery and Otitis Media
Philips (United States)
2008-2023
Highland Community College - Illinois
2011-2016
Philips (Finland)
2010
LIG Science (United States)
2008
Cleveland Clinic
1990-2006
Bristol-Myers Squibb (Germany)
1999
Massachusetts Institute of Technology
1990
Abstract Computed tomography is a widely used medical imaging technique that has high spatial and temporal resolution. Its weakness its low sensitivity towards contrast media. Iterative reconstruction techniques (ITER) have recently become available, which provide reduced image noise compared with traditional filtered back-projection methods (FBP), may allow the of CT to be improved, however this effect not been studied in detail. We scanned phantoms containing either an iodine agent or gold...
Segmentation of organs in medical images can be successfully performed with shape-constrained deformable models. A surface mesh is attracted to detected image boundaries by an external energy, while internal energy keeps the similar expected shapes. Complex like heart its four chambers automatically segmented using a suitable shape variablility model based on piecewise affine degrees freedom. In this paper, we extend approach also segment highly variable vascular structures. We introduce...
Objectives: In patients with chronic ischemic heart disease, the relationship between coronary artery lesion severity and myocardial scarring is unknown.The purpose of this study was to examine proximal stenosis severity, amount collateralization, scar extent in distal distribution affected based on both quantitative angiography (QCA) delayed-enhancement magnetic resonance imaging (DE–MRI). Methods: Thirty-four (26 males, 8 females; age range: 35-86 years) a containing single, ≥30% by...
This study evaluates the welding effect of argon laser on fascial grafts and its potential application in tympanoplasty. An animal model was designed so that surgically induced perforations lumbar fascia animals were grafted an underlay fashion. Each graft "spot welded" around circumference perforation using a hand-held laser. Various lasing parameters used different grafts. Control but not welded. A total 96 studied. Weld sites evaluated both histologically by tensile strength measurement...
Purpose: Spectral computed tomography (CT) enables improved tissue characterization, although virtually all research has focused on contrast-enhanced examinations. We hypothesized that changes in myocardial related to acute infarction (AMI) might potentially be identified without the need for contrast administration using electron density (ED) imaging. Patients and Methods: This retrospective observational study involved a small series (n = 15) of patients admitted our institution with first...
To assess the impact of chest circumference (CC)-adjusted tube current and iterative reconstructions (iDose) on individualized radiation dose reduction image quality (IQ) in ECG-triggered computed tomography coronary angiography (CTCA).A total 102 patients underwent retrospectively CTCA utilizing CC-adapted [mAs=1000×(0.051×CC-23.765)/900] filtered back projection (FBP) reconstruction (group A). On basis CC-adjusted technique, 54 B) retrospective with a 20% mAs compared group A 90 C)...
Motion compensated cardiac reconstruction in computed tomography (CT) has traditionally been focused on coronary arteries. However, with the increasing number of CT scans being performed for diagnosis and treatment planning valvular diseases, there is a clear need motion correction aortic valve region to assist reproducibility annulus measurements. A second pass approach compensation retrospective ECG-gated introduced here. The processing chain comprised four steps. gated multi-phase first...