Megan Russ

Journal Article Med Phys · November 2023 BACKGROUND: Pulsed wave Doppler ultrasound is a useful modality for assessing vascular health as it quantifies blood flow characteristics. To facilitate accurate diagnosis, accuracy and consistency of this modality should be assessed through Doppler qualit ... Full text Link to item Cite

Quantification of the Accuracy and Cross-Fleet Variability of Spectral Doppler Flow Velocity Measurements

Conference MEDICAL PHYSICS · 2022 Cite

Quantitative Evaluation of Clinical Fluoroscopy Systems: Reproducibility of Temporal Modulation Transfer Function and Temporal Noise Power Spectrum Measurements Using a Rotating Edge Method

Conference MEDICAL PHYSICS · June 1, 2019 Link to item Cite

The 12C(n,2n)11C cross section threshold to 26.5 MeV

Journal Article Physical Review C: Nuclear Physics · May 2, 2018 Full text Link to item Cite

Focal spot size reduction using asymmetric collimation to enable reduced anode angles with a conventional angiographic x-ray tube for use with high resolution detectors

Conference Progress in Biomedical Optics and Imaging - Proceedings of SPIE · January 1, 2017 The high-resolution requirements for neuro-endovascular image-guided interventions (EIGIs) necessitate the use of a small focal-spot size; however, the maximum tube output limits for such small focal-spot sizes may not enable sufficient x-ray fluence after ... Full text Cite

A CMOS-based high-resolution fluoroscope (HRF) detector prototype with 49.5μm pixels for use in endovascular image guided interventions (EIGI)

Conference Progress in Biomedical Optics and Imaging - Proceedings of SPIE · January 1, 2017 X-ray detectors to meet the high-resolution requirements for endovascular image-guided interventions (EIGIs) are being developed and evaluated. A new 49.5-micron pixel prototype detector is being investigated and compared to the current suite of high-resol ... Full text Cite

Comparison of high resolution x-ray detectors with conventional FPDs using experimental MTFs and apodized aperture pixel design for reduced aliasing

Conference Progress in Biomedical Optics and Imaging - Proceedings of SPIE · January 1, 2017 Apodized Aperture Pixel (AAP) design, proposed by Ismailova et.al, is an alternative to the conventional pixel design. The advantages of AAP processing with a sinc filter in comparison with using other filters include non-degradation of MTF values and elim ... Full text Cite

Use of patient specific 3D printed neurovascular phantoms to evaluate the clinical utility of a high resolution x-ray imager

Conference Progress in Biomedical Optics and Imaging - Proceedings of SPIE · January 1, 2017 Modern 3D printing technology can fabricate vascular phantoms based on an actual human patient with a high degree of precision facilitating a realistic simulation environment for an intervention. We present two experimental setups using 3D printed patient- ... Full text Cite

Focal spot deblurring for high resolution direct conversion x-ray detectors

Conference Progress in Biomedical Optics and Imaging - Proceedings of SPIE · January 1, 2016 Small pixel high resolution direct x-ray detectors have the advantage of higher spatial sampling and decreased blurring characteristic. The limiting factors for such systems becomes the degradation due to the focal spot size. One solution is a smaller foca ... Full text Cite

Quantitative comparison using generalized relative object detectability (G-ROD) metrics of an amorphous selenium detector with high resolution microangiographic fluoroscopes (MAF) and standard flat panel detectors (FPD)

Conference Progress in Biomedical Optics and Imaging - Proceedings of SPIE · January 1, 2016 A novel amorphous selenium (a-Se) direct detector with CMOS readout has been designed, and relative detector performance investigated. The detector features include a 25μm pixel pitch, and 1000μm thick a-Se layer operating at 10V/μm bias field. A simulated ... Full text Cite

Treatment planning for image-guided neuro-vascular interventions using patient-specific 3D printed phantoms

Conference Progress in Biomedical Optics and Imaging - Proceedings of SPIE · January 1, 2015 Minimally invasive endovascular image-guided interventions (EIGIs) are the preferred procedures for treatment of a wide range of vascular disorders. Despite benefits including reduced trauma and recovery time, EIGIs have their own challenges. Remote cathet ... Full text Cite

New family of generalized metrics for comparative imaging system evaluation

Conference Progress in Biomedical Optics and Imaging - Proceedings of SPIE · January 1, 2015 A family of imaging task-specific metrics designated Relative Object Detectability (ROD) metrics was developed to enable objective, quantitative comparisons of different x-ray systems. Previously, ROD was defined as the integral over spatial frequencies of ... Full text Cite

Manufacturing patient-specific phantoms to treat aneurysms using rotational angiography and 3-D modeling

Conference Proceedings of the ASME Design Engineering Technical Conference · January 1, 2014 The purpose of this study is to manufacture a patient-specific phantom containing multiple aneurysms that can be observed and tested to determine the need for interventional treatment. The vasculatures for the phantoms are taken from unhealthy individuals ... Full text Cite