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The resolution of an imaging system is an important metric for quantifying its optical performance. Commonly used metrics like the instantaneous field of view and the Rayleigh criterion have multiple drawbacks, e.g., they ignore aberrations and obscurations, assume spatially uniform detector response, and treat detector and optical resolutions separately. Here, we present a new metric, , based on the point response function of an imaging system and demonstrate its advantages. We also relate this new metric to the matched filter signal-to-noise ratio and define a generalized two-dimensional sampling number.
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http://dx.doi.org/10.1364/JOSAA.538775 | DOI Listing |
JMIR Med Inform
September 2025
Departments of Radiology, The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Road, Guangzhou, Guangdong, 510630, China, 86 18922109279, 86 20852523108.
Background: Despite the Coronary Artery Reporting and Data System (CAD-RADS) providing a standardized approach, radiologists continue to favor free-text reports. This preference creates significant challenges for data extraction and analysis in longitudinal studies, potentially limiting large-scale research and quality assessment initiatives.
Objective: To evaluate the ability of the generative pre-trained transformer (GPT)-4o model to convert real-world coronary computed tomography angiography (CCTA) free-text reports into structured data and automatically identify CAD-RADS categories and P categories.
JMIR Res Protoc
September 2025
Department of Urology, Faculty of Medicine, Universitas Indonesia - Cipto Mangunkusumo Hospital, Jakarta, Indonesia.
Background: Circumcision is a widely practiced procedure with cultural and medical significance. However, certain penile abnormalities-such as hypospadias or webbed penis-may contraindicate the procedure and require specialized care. In low-resource settings, limited access to pediatric urologists often leads to missed or delayed diagnoses.
View Article and Find Full Text PDFPain Med Case Rep
December 2023
University of Central Florida College of Medicine, Orlando, FL.
Background: An intrathecal (IT) pump is an effective drug delivery system that assists patients with chronic pain management. However, due to the invasive nature of the procedure, a complication that could arise is cerebrospinal overdrainage or leak, which could lead to adverse effects.
Case Report: The patient underwent an IT morphine pump implant for treatment of his chronic, intractable low back pain.
J Cataract Refract Surg
September 2025
Ophthalmology Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy.
Purpose: To compare the usability and training effectiveness of a 3D-printed coaxial illumination system mounted on an off-the-shelf stereo-microscope to a professional ophthalmic surgical microscope, in cataract surgery simulation.
Setting: Ophthalmology Lab, Ophthalmology Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy.
Design: Prospective randomized crossover study.
Dermatol Surg
September 2025
Allergan Aesthetics, an AbbVie Company, Irvine, California.
Background: Cryolipolysis is an effective, well-tolerated noninvasive subcutaneous fat reduction treatment.
Objective: Assess participant satisfaction, effectiveness, and safety of a dual-applicator cryolipolysis system that can deliver simultaneous treatments.
Materials And Methods: Adult participants received treatment to the abdomen/flanks (midsection).