Energy-resolved fast-neutron radiography using an event-mode neutron imaging detector.

Energy-resolved fast-neutron radiography is a powerful non-destructive technique that can be used to remotely measure the quantity and distribution of elements and isotopes in a sample. This is done by comparing the energy-dependent neutron transmission of a sample with the known cross-sections of individual isotopes. The reconstruction of the composition is possible due to the unique features (e.

Visual outcomes following orbital decompression for orbital infections.

Objective: To analyze the visual outcomes and sequelae of endonasal intervention for orbital infections.

Introduction: Orbital infections pose a serious threat to vision in the pediatric population and can result in complications such as blindness, diplopia, intracranial involvement, and death. [1] Orbital decompression by endonasal intervention is a common treatment to address a variety of orbital infections including orbital cellulitis, orbital abscesses, and subperiosteal abscesses.

Racial, ethnic and language disparities in healthcare utilization in pediatric patients following tonsillectomy.

Importance: Tonsillectomy is one of the most common surgical procedures performed in the United States. However, there is little known about the intersectionality of race, ethnicity, and language and how these factors influence post-tonsillectomy outcomes such as ED utilization and hospital readmission rates.

Objective: To examine disparities in emergency department (ED) utilization and hospital readmissions for post-tonsillectomy complications based on insurance status, patient race, ethnicity and language spoken.

The Complex, Unique, and Powerful Imaging Instrument for Dynamics (CUPI2D) at the Spallation Neutron Source (invited).

The Oak Ridge National Laboratory is planning to build the Second Target Station (STS) at the Spallation Neutron Source (SNS). STS will host a suite of novel instruments that complement the First Target Station's beamline capabilities by offering an increased flux for cold neutrons and a broader wavelength bandwidth. A novel neutron imaging beamline, named the Complex, Unique, and Powerful Imaging Instrument for Dynamics (CUPI2D), is among the first eight instruments that will be commissioned at STS as part of the construction project.

Boron-Based Neutron Scintillator Screens for Neutron Imaging.

In digital neutron imaging, the neutron scintillator screen is a limiting factor of spatial resolution and neutron capture efficiency and must be improved to enhance the capabilities of digital neutron imaging systems. Commonly used neutron scintillators are based on LiF and gadolinium oxysulfide neutron converters. This work explores boron-based neutron scintillators because B has a neutron absorption cross-section four times greater than Li, less energetic daughter products than Gd and Li, and lower γ-ray sensitivity than Gd.

Measuring Thickness-Dependent Relative Light Yield and Detection Efficiency of Scintillator Screens.

Digital camera-based neutron imaging systems consisting of a neutron scintillator screen optically coupled to a digital camera are the most common digital neutron imaging system used in the neutron imaging community and are available at any state-of-the-art imaging facility world-wide. Neutron scintillator screens are the integral component of these imaging system that directly interacts with the neutron beam and dictates the neutron capture efficiency and image quality limitations of the imaging system. This work describes a novel approach for testing neutron scintillators that provides a simple and efficient way to measure relative light yield and detection efficiency over a range of scintillator thicknesses using a single scintillator screen and only a few radiographs.