Publications by authors named "M Dresner"
Development and implementation of optimized endogenous contrast sequences for delineation in adaptive radiotherapy on a 1.5T MR-linear-accelerator: a prospective R-IDEAL stage 0-2a quantitative/qualitative evaluation of site-specific quality-assurance using a 3D T2 fat-suppressed platform for head and neck cancer.
J Med Imaging (Bellingham)
November 2023
Article Synopsis
- The study aimed to enhance segmentation accuracy in head and neck cancer radiotherapy by optimizing a specific type of MRI sequence known as SPAIR for use with a 1.5T MR-Linac.
- After testing several sequences, three viable SPAIR sequences were analyzed for various metrics, leading to the identification of a top-performing sequence for better delineation of tumors and lymph nodes.
- Ultimately, the research provided an optimized imaging sequence for Unity MR-Linac users and established a new pathway for objectively assessing image quality in MRI, which can benefit future protocols.
Purpose: The goal of this study was to commission the use of a magnetic resonance linear accelerator (MR-linac; Unity) for imaging of gynecologic high-dose-rate (HDR) brachytherapy. This included optimizing imaging protocols and workflow development.
Methods And Materials: T1-weighted and T2-weighted HDR imaging protocols were optimized on the Unity for HDR gynecologic imaging and treatment planning.
An examination is conducted of airline strategies during the covid-19 pandemic using data from the United States. Our findings show that airlines pursued diverse strategies in terms of route entry and retention, pricing, and load factors. At the route level, a more detailed examination is conducted of the performance of a middle-seat blocking strategy designed to increase the safety of air travel.
View Article and Find Full Text PDFWe investigate the impact of air travel mobility and global connectivity on viral transmission by tracing the announced arrival time of COVID-19 and its major variants in countries around the world. We find that air travel intensity to a country, "effective distance" as measured by international air traffic, is generally a significant predictor for the announced viral arrival time. The level of healthcare infrastructure in a country is less important at predicting the initial transmission and detection time of a virus.
View Article and Find Full Text PDFObjective: To measure changes in psychometric state, neural activation, brain volume (BV), and cerebral metabolite concentrations during treatment of minimal hepatic encephalopathy.
Methods: As proof of principle, 22 patients with well-compensated, biopsy-proven cirrhosis of differing etiology and previous minimal hepatic encephalopathy were treated with oral l-ornithine l-aspartate for 4 weeks. Baseline and 4-week clinical review, blood chemistry, and psychometric evaluation (Psychometric Hepatic Encephalopathy Score and Cognitive Drug Research Score) were performed.