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| http://dx.doi.org/10.1007/s00216-022-04082-8 | DOI Listing |
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A simple algorithm to derive virtual non-contrast electron density from dual-energy computed tomography data for radiotherapy treatment planning.
Med Phys
January 2025
Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Hokkaido, Japan.
Background: The use of iodinated contrast-enhancing agents in computed tomography (CT) improves the visualization of relevant structures for radiotherapy treatment planning (RTP). However, it can lead to dose calculation errors by incorrectly converting a CT number to electron density.
Purpose: This study aimed to propose an algorithm for deriving virtual non-contrast (VNC) electron density from dual-energy CT (DECT) data.
Ways to Measure Metals: From ICP-MS to XRF.
Curr Environ Health Rep
January 2025
School of Health Sciences, Purdue University, West-Lafayette, IN, 47906, USA.
Purpose Of Review: This review explores the use of Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and X-ray Fluorescence (XRF) for quantifying metals and metalloids in biological matrices such as hair, nails, blood, bone, and tissue. It provides a comprehensive overview of these methodologies, detailing their technological limitations, application scopes, and practical considerations for selection in both laboratory and field settings. By examining traditional and novel aspects of each method, this review aims to guide researchers and clinical practitioners in choosing the most suitable analytical tool based on their specific needs for sensitivity, precision, speed, and sample preparation.
View Article and Find Full Text PDFGalactic cosmic ray environment predictions for the NASA BioSentinel Mission, part 2:Post-mission validation.
Life Sci Space Res (Amst)
February 2025
NASA Ames Research Center, Moffett Field, CA 94035, United States.
The BioSentinel CubeSat was deployed on the Artemis-I mission in November 2022 and has been continuously transmitting physical measurements of the space radiation environment since that time. Just before mission launch, we published computational model predictions of the galactic cosmic ray exposure expected inside BioSentinel for multiple locations and configurations. The predictions utilized models for the ambient galactic cosmic ray environment, radiation physics and transport, and BioSentinel geometry.
View Article and Find Full Text PDFExploring the perspectives of early-stage postoperative glioblastoma patients and their caregivers on end-of-life care planning: An exploratory qualitative interview study.
Appl Nurs Res
February 2025
Institute of Community Health Care, College of Nursing, National Yang Ming Chiao Tung University, Taipei, Taiwan; Cicely Saunders Institute of Palliative Care, Policy and Rehabilitation, King's College London, UK. Electronic address:
Aim: Compare the convergent and divergent viewpoints of early-stage postoperative patients with glioblastoma and their caregivers on end-of-life care planning in Taiwan.
Background: Decision-making capacity in patients with glioblastoma may be compromised as disease progresses, making early future care planning essential to ensure that the provided care aligns with patients' goals. However, within many Asian cultures, the tendency to avoid discussions about death can lead patients to feel hesitant about addressing end-of-life care options.
Nanoscale visualization of crack tips inside molten corium-concrete interaction debris using 3D-FIB-SEM with multiphase positional misalignment correction.
Microscopy (Oxf)
January 2025
Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan.
Characterizing molten corium-concrete interaction (MCCI) fuel debris in Fukushima reactors is essential to develop efficient methods for its removal. To enhance the accuracy of microscopic observation and focused ion beam (FIB) microsampling of MCCI fuel debris, we developed a three-dimentional FIB scanning electron microscopy (SEM) technique with a multiphase positional misalignment (MPPM) correction method. This system automatically aligns voxel positions, corrects contrast, and removes artifacts from a series of over 500 SEM images.
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