Variability of EPR signal parameters in retrospective dosimetry with teeth has been studied among five different oblasts (regions) of Ukraine. It was found that the native signal in enamel is region-invariant and has peak-to-peak width of 0.85+/-0.01 mT and intensity of 1.0+/-0.20 normalized units. Low-frequency background signals in the spectra of enamel, expressed in terms of dose were estimated to represent 1520 mGy. Variability of radiation sensitivity among different teeth (inter-sample variability measured using 100 mg aliquots) was (+/-)4% while among different parts of one tooth (intra-sample variability measured using 5-10 mg aliquots)--(+/-)7%.
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http://dx.doi.org/10.1016/j.apradiso.2004.08.043 | DOI Listing |
Orthop Surg
January 2025
Senior Department of Orthopedics, The Fourth Medical Center of PLA General Hospital, Beijing, China.
Objective: Robotic-assisted total knee arthroplasty (TKA) is a novel orthopedic technique. The workflow of robotic-assisted TKA is quite different from that of traditional manual TKA and may result incompletely different resection parameters. Understanding these parameters may help surgeons better perform robotic-assisted TKA.
View Article and Find Full Text PDFClin Exp Hepatol
March 2024
Diagnostic and Interventional Radiology, University of Leipzig, Leipzig, Germany.
Aim Of The Study: Over the past few years, diffusion-weighted imaging (DWI) has become an increasingly important diagnostic tool in the diagnosis of liver lesions. The objective of the present study was to evaluate the diagnostic benefit of high b-value computed diffusion-weighted imaging (c-DWI) compared with standard DWI in patients with hepatocellular carcinoma (HCC) and whether there is an association with microvascular invasion (MVI).
Material And Methods: In total, 37 patients with histopathologically confirmed HCC were retrospectively ana-lyzed.
Cureus
December 2024
Department of Neurosurgery, Swedish Neuroscience Institute, Seattle, USA.
Background: Adjacent segment disease (ASD) is a degenerative condition at the segment adjacent to a previously fused segment. Potential risk factors for ASD, such as posterior ligamentous complex (PLC) integrity between the upper instrumented vertebra (UIV) and the first unfused segment (UIV+1), have not been addressed. The objective of this study is to assess the PLC integrity between the UIV and UIV+1 following posterior lumbar decompression and fusion (PLDF).
View Article and Find Full Text PDFSurg Pract Sci
December 2022
Mayo Clinic, Department of Surgery, 4500 San Pablo Road, Jacksonville, FL 32224, USA.
Unlabelled: Resident evaluations remain controversial. Metric systems are employed to objectify evaluations. Our institution adopted the question "Relative to all other trainees that I have supervised over my career, I place this individual's performance in the following percentile" with the goal of objectifying the evaluations.
View Article and Find Full Text PDFFront Physiol
January 2025
Departamento de Paciente Crítico, Clínica Alemana de Santiago, Santiago, Chile.
Assessing muscle mass in critically ill patients remains challenging. This retrospective cohort study explores the potential of phase angle (PA°) derived from bioelectrical impedance analysis (BIA) as a surrogate marker for muscle mass monitoring by associating it with daily creatinine excretion (DCE), a structural and metabolic muscle mass marker. In 20 ICU patients, we observed a linear relationship between PA° and DCE at initial (S1) and follow-up (S2) points, with Rho values of 0.
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