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Results for "blood flow": 15 found

4DCT Contrast Protocol for Cardiac Radioablation

Authors: Jeremy S. Bredfeldt, Cindy I. Hancox, Arianna Liles, Alex Marques, Usha Tedrow

Affiliation: Department of Cardiology, Brigham and Women's Hospital, Harvard Medical School, Department of Radiation Oncology, Brigham and Women's Hospital, Harvard Medical School

Abstract Preview: Purpose: Ventricular tachycardia (VT) can be treated using cardiac radioablation. 4DCT simulation is commonly used, however, contrast injection timing is challenging. This study aimed to develop a pro...

An Experimentally Derived Microscale Blood and Lymphatic Vasculature Model for Applications to Radiopharmaceutical Dosimetry

Authors: Peter Balogh, Wesley E. Bolch, Mir Md Nasim Hossain, Nien-Wen Hu, Walter Murfee, Wyatt Smither, Julia D. Withrow

Affiliation: New Jersey Institute of Technology, University of Florida

Abstract Preview: Purpose: To develop 3D computational, tissue-representative models incorporating physiologically relevant microvascular network patterns for calculating local alpha particle and electron dosimetry eff...

Assessing Skin Microcirculation in Breast Cancer Radiotherapy: Effectiveness of a Specialized Bra Compared in Two Hypofractionated Protocols.

Authors: Rosa Maria Cibrián Ortiz de Anda, Altea C Esteve, Carlos M Galindo-González, Carmen C García, Amparo Gonzalez-Sanchis, Jose C Gordo-Partearroyo, Emilio Soria-Olivas, Javier Vijande

Affiliation: IFIC-UV, Valencia University, Hospital General Universitario

Abstract Preview: Purpose: To determine how skin microcirculation is affected by the two hypo-fractionated radiotherapy protocols in breast cancer patients using Laser Doppler Imaging, a non-invasive method for assessi...

Assessment of Material Discrimination Slopes in Dual Energy CT Imaging

Authors: Izabella L. Barreto, Aroon Pressram

Affiliation: University of Florida College of Medicine, University of Florida

Abstract Preview: Purpose: Our clinical dual energy CT (DECT) head protocol reconstructs iodine-suppressed virtual non-contrast (VNC) images using the vendor-recommended slope for material discrimination. However, this...

Development of a Brain-like Digital Reference Object of Resting-State Functional MRI

Authors: Henry Szu-Meng Chen, Mu-Lan Jen, Vinodh A. Kumar, Ho-Ling Anthony Liu, Jian Ming Teo

Affiliation: School of Medicine, University of Colorado Denver, Department of Neuroradiology, The University of Texas MD Anderson Cancer Center, Department of Imaging Physics, The University of Texas MD Anderson Cancer Center

Abstract Preview: Purpose: Resting-state (rs-) fMRI detects functional networks by measuring synchronization of low-frequency oscillations in blood-oxygenation-level-dependent (BOLD) signals between brain regions. Stan...

Development of a Whole-Body Blood Flow Framework Based on the Icrp Blood Phantom

Authors: Jung Han Nam, Wonmo Sung

Affiliation: Department of Biomedical Engineering and Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Department of Biomedical Engineering and Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, Seoul, Korea

Abstract Preview: Purpose: This study aims to develop a whole-body blood flow framework based on the ICRP 145 standard vascular phantom to simulate the spatiotemporal trajectories of blood cells in the human vasculatur...

Dosimetric Analysis of Lymphopenia after Lung Irradiation and Modeling the Probability of Normal Tissue Complications

Authors: Tianyuan Dai, Xiaoying Fan, Shuting Wang, Yong Yin

Affiliation: Department of Graduate, Shandong First Medical University, Shandong Academy of Medical Sciences, Department of Radiation Oncology Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences

Abstract Preview: Purpose: Decreased lymphocytes increase the risk of infections and other problems. Radiation exposure can cause the development of severe lymphopenia. In this study, we used a dynamic blood flow model...

Functional MRI Guided Partial Tumor Irradiation to Improve Tumor Control and Spare Tumor Microenvironment

Authors: Bingqi Guo, Ping Xia

Affiliation: Cleveland Clinic

Abstract Preview: Purpose:
Spatially fractionated radiation therapy (SFRT) delivers a “GRID” or “lattice” of high and low doses to tumors to increase tumor control, minimize normal tissue damage, and preserve the im...

Intraoperative Dynamic Contrast-Enhanced Fluorescence Imaging in Quantifying Tissue Perfusion of Amputation Patients

Authors: Logan M. Bateman, Xu Cao, Jonathan T. Elliott, Lillian A. Fisher, Ida Leah Gitajn, Xinyue Han, Eric R. Henderson, Shudong Jiang, Jessica M. Sin, Yue Tang

Affiliation: Dartmouth College, Dartmouth-Hitchcock Medical Center

Abstract Preview: Purpose: Adequate tissue perfusion is essential for fracture healing and infection prevention, as it supplies oxygen, nutrients and antibiotics to the injury area. However, current methods of assessin...

MR-Based Functional Liver Imaging and Dosimetry to Predict Albi Change Post-SBRT

Authors: Madhava Aryal, James M. Balter, Yue Cao, Daniel T Chang, Kyle Cuneo, Joseph R. Evans, Theodore Lawrence, John Rice, Randall K. Ten Haken, Lise Wei

Affiliation: University of Michigan, Department of Radiation Oncology University of Michigan

Abstract Preview: Purpose: This study aims to identify predictors of global liver function change measured by albumin-bilirubin (ALBI) score following stereotactic body radiation therapy (SBRT) in hepatocellular carcin...

Measurement of Microscopic Velocity Gradients Using Magnetic Nanoparticles in Blood Flow

Authors: Scott Gordon-Wylie, Scott Gordon-Wylie, Dhrubo Jyoti, John B. Weaver, Terrence Welch

Affiliation: Flow Aluminum, Dartmouth College, Dartmouth-Health

Abstract Preview: Purpose: Identifying vulnerable plaques is critical to preventing stroke and myocardial infarction. There are two components contributing to the risk of rupture: the mechanical integrity of the plaque...

Non-Contact Blood Pressure Estimation Using Remote Photoplethysmography Signals Extracted from Facial Video: A Deep Learning Approach

Authors: Mavlonbek Khomidov, Jong-Ha Lee

Affiliation: Department of Biomedical Engineering, Keimyung University, Department of Computer Engineering, Keimyung University

Abstract Preview: Purpose: In this research, we aim to estimate blood pressure using remote photoplethysmography (rPPG) signal extracted from facial video. This method provides non-invasive and contactless, continuous ...

On Designing a Vascular Flow Phantom for Contrast-Enhanced Ultrasound Imaging

Authors: Kevin M Brom, Josep Chorro Bas, RosaAnna Chorro Bas, Andres Climent Rubio, Jaydev K. Dave, Tobias Kummer, Larissa Shiue, Donald J Tradup

Affiliation: Mayo Clinic, Prehospital Critical Care Training Group

Abstract Preview: Purpose: To design and evaluate the functionality of a vascular flow phantom for contrast-enhanced ultrasound imaging (CEUS).

Methods: A microcontroller-generated signal was amplified by a cust...

Realistic Modeling of Vasculature Flow and Oxygen Distribution in Normal Tissue and Glioblastoma

Authors: Yi Fan, Andrew Friberg, Costas Koumenis, Kevin Teo, Ioannis I Verginadis, Ledi Wang, Jennifer Wei Zou

Affiliation: Department of Radiation Oncology, University of Pennsylvania, University of Pennsylvania

Abstract Preview: Purpose: Glioblastomas (GBM) are aggressive and lethal malignancies characterized by their highly refractory nature, contributing to a five-year survival rate of approximately 7%. Physically, GBM exhi...

SPECT/CT Multimodal Segmentation of Bone Marrow for Theranostic Dosimetry

Authors: Tommaso Frigerio, Joshua Genender, John M. Hoffman, Catherine (Caffi) Meyer

Affiliation: UCLA, David Geffen School of Medicine at UCLA

Abstract Preview: Purpose: Accurate bone marrow segmentation is required for bone marrow dosimetry to monitor for dangers in PSMA-Lu177 radioligand therapy. We introduce a hybrid (AI/semantic knowledge) segmentation pi...