Temperature dependent characteristics of the 2N4416 JFET for radiation spectrometer charge-sensitive pre-amplifiers.

Feedback resistor-less charge-sensitive pre-amplifiers for X-ray/γ-ray photon (and e particle) counting photodiode radiation spectrometers operate with their input transistor in an unusual mode (i.e. the gate is slightly forward biased).

Enrollment in a fracture liaison service does not guarantee post fracture follow-up.

Objective: To assess post fracture outpatient follow-up adherence in a cohort of patients enrolled in a fracture liaison service (FLS).

Methods: We analyzed FLS registry data for patients who were hospitalized with fragility fractures from June 2020 through December 2022 and determined the proportion of patients who kept their follow-up appointments in outpatient endocrinology and orthopedic clinics.

Results: We identified 295 patients who were eligible for the FLS pathway; from this group, 57 declined an endocrinology follow-up visit.

A streamlined workflow for comprehensive 4DCT imaging QA with automated analysis of spatial integrity and image quality.

Purpose: A comprehensive 4DCT QA program that includes the assessment of spatial integrity and image quality of 4D phantom scans can be resource-intensive, especially because the analysis burden scales with the number of motion traces used for QA. This work presents a streamlined and scalable workflow, enabled by the use of a widely available phantom and an automated analysis tool.

Methods: For 4DCT imaging QA, the Catphan was placed on the QUASAR motion platform, driven with sinusoidal motion traces of various amplitudes and frequencies.

Planar Defect Layers Template a High-Pressure InBi Polymorph.

The short- and long-range order of III-V materials under high pressure has long been the subject of debate, with advancements in structural characterization leading to significant revisions to the accepted structural models. Despite these revisions, previous high-pressure structural assignments in the In-Bi system include the site-disordered β-Sn structure type, a structure type demonstrated to be nonexistent in analogous III-V systems. While X-ray diffraction is consistent withsite disordering in InBi at high pressure, cluster expansion calculations indicate that disordering requires temperatures above 3000 K.

A Case Series of the Use of Intranasal Dexmedetomidine for Procedural Sedation in the Pediatric Emergency Department.

Procedural sedation in children has the propensity to result in costly hospital admissions and prolonged lengths of stay in emergency departments due to the coordination and resources required for completion. The use of intranasal (IN) dexmedetomidine in children for procedural sedation has been growing in popularity and demand in many clinical settings. Dexmedetomidine is a centrally acting alpha-2 agonist with anesthetic and anxiolytic properties, making it a useful option for sedation.