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Background: Hypothyroidism is a common sequela after radiotherapy for nasopharyngeal carcinoma (NPC). Magnetic resonance imaging (MRI) has gained prominence in thyroid imaging, leveraging its non-ionizing radiation, high spatial resolution, multiparameter and multidirectional imaging. Few previous studies have investigated the evaluation of radiation-induced thyroid injury by MRI.
View Article and Find Full Text PDFDouble bowtie design for high sensitivity pediatric spectral CT.
Conf Proc Int Conf Image Form Xray Comput Tomogr
August 2024
Department of Radiology, Perelman School of Medicine, Philadelphia, PA USA.
Despite the evident benefits of spectral computed tomography (CT) in delivering qualitative imaging superior to that of conventional CT in adults, its application in pediatric diagnostic imaging is still relatively limited due to various reasons, including design limitations and radiation dose considerations. The use of specialized K-edge filters, in conjunction with other spectral technologies, has been demonstrated to improve spectral quantification accuracy. X-ray flux limitations generally pose challenges in these concepts when applied to adults.
View Article and Find Full Text PDFImpacts of Calculation Grid Spacing and Statistical Uncertainty of Monte Carlo Algorithm on Stereotactic Radiosurgery Planning With Volumetric-Modulated Arcs for Single Brain Metastases Using the Monaco® System.
Cureus
December 2024
Department of Radiology, Aichi Medical University, Nagakute, JPN.
Purpose In linac-based stereotactic radiosurgery (SRS) utilizing a multileaf collimator (MLC) for brain metastases (BMs), a volumetric-modulated arc (VMA) technique is indispensable for generating a suitable dose distribution with efficient planning and delivery. However, the optimal calculation grid spacing (GS) and statistical uncertainty (SU) of the Monte Carlo algorithm for VMA optimization have yet to be determined. This planning study aimed to examine the impacts of GS and GU settings on VMA-based SRS planning and to find the optimal combination for templating.
View Article and Find Full Text PDFX-ray irradiation as a potential postharvest treatment for maintaining the quality of lily (Lilium davidii var. unicolor) bulbs and predicting shelf life using an artificial neural network.
Food Res Int
February 2025
College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China. Electronic address:
This study aimed to investigate the impact of X-ray irradiation pretreatment at varying doses (0.5, 1.0, 1.
View Article and Find Full Text PDFThe impact of radiation-related lymphocyte recovery on the prognosis of locally advanced esophageal squamous cell carcinoma patients: a retrospective analysis.
Radiat Oncol
January 2025
Department of Radiation Oncology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China.
Background: The impact of radiation-related lymphocyte recovery on prognosis in locally advanced esophageal squamous cell carcinoma (LA-ESCC) remains unclear.
Methods: Patients with stage II-IVa ESCC who received definitive RT were screened. Collect absolute lymphocyte counts (ALCs) before, during, and after RT.
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