Measurement of radiation fields with small scintillators as detectors for radiation dose is an attractive method provided that the scintillator luminescence can be discriminated against other unwanted signals. In diagnostic radiology radioluminescence of the optical fibres required for a transmission of the luminescence to an optical detector is the only source for such an impairment of the signal. To find fibres with low radioluminosity a survey of ten commercial fibres including polystyrene (PS), polystyrene wavelength shifting fibres, poly-methylmetacrylate (PMMA) and silica as fibre core material was made. Measurements were made with two photomultipliers of different spectral response and a clinical x-ray unit. Lowest radioluminosity was obtained with PMMA fibres. Depending on spectral sensitivity of the multiplier clear PS fibres give five to ten times the luminescence of PMMA. From the silica fibres only one high-OH fibre gave comparable results for wavelength up to 520 nm. Wavelength shifting fibres and silica fibres with low OH-content show strong fluorescence and are not suitable fibre materials.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1088/0031-9155/52/4/N01 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Deciphering the impact of dietary habits and behavioral patterns on colorectal cancer.
Int J Surg
January 2025
The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China.
Colorectal cancer (CRC) is a malignant tumor that originates from the epithelial cells of the colon and rectum. Global epidemiological data shows that in 2020, the incidence and mortality rate of CRC ranked third and second, respectively, posing a serious threat to people's health and lives. The factors influencing CRC are numerous and can be broadly categorized as modifiable and non-modifiable based on whether they can be managed or intervened upon.
View Article and Find Full Text PDFDifferential Myf5 and Myf6 expression and muscle fiber traits in Angora, Hair, Honamlı, and Kilis goats.
Trop Anim Health Prod
January 2025
Department of Agricultural Biotechnology, Faculty of Agriculture, Kırşehir Ahi Evran University, 40100, Kirsehir, Türkiye.
The present study was conducted on specific skeletal muscles of six weaned male kids from each of the Angora, Hair, Honamlı, and Kilis goat breeds. The relationships between the expression of myogenic factor 5 (Myf5) and myogenic factor 6 (Myf6) genes and muscle fibre characteristics were analysed. Muscle samples from the longissimus dorsi (LD) and semitendinosus (ST) were collected from six 90-day-old weaned male kids of each breed.
View Article and Find Full Text PDFA first morphological and electrophysiological characterization of Fañanas cells of the mouse cerebellum.
J Physiol
January 2025
Université Paris Cité, CNRS, Saints-Pères Paris Institute for the Neurosciences, Paris, France.
Fañanas cells (FCs) are cerebellar glia of unknown function. First described more than a century ago, they have been almost absent from the scientific literature ever since. Here, we combined whole-cell, patch clamp recordings, near-UV laser photolysis, dye-loading and confocal imaging for a first characterization of FCs in terms of their morphology, electrophysiology and glutamate-evoked currents.
View Article and Find Full Text PDFNeuroregulation during Bone Formation and Regeneration: Mechanisms and Strategies.
ACS Appl Mater Interfaces
January 2025
National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, China.
The skeleton is highly innervated by numerous nerve fibers. These nerve fibers, in addition to transmitting information within the bone and mediating bone sensations, play a crucial role in regulating bone tissue formation and regeneration. Traditional bone tissue engineering (BTE) often fails to achieve satisfactory outcomes when dealing with large-scale bone defects, which is frequently related to the lack of effective reconstruction of the neurovascular network.
View Article and Find Full Text PDFNanoencapsulated Optical Fiber-Based PEC Microelectrode: Highly Sensitive and Specific Detection of NT-proBNP and Its Implantable Performance.
Anal Chem
January 2025
Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
Microelectrodes offer exceptional sensitivity, rapid response, and versatility, making them ideal for real-time detection and monitoring applications. Photoelectrochemical (PEC) sensors have shown great value in many fields due to their high sensitivity, fast response, and ease of operation. Nevertheless, conventional PEC sensing relies on cumbersome external light sources and bulky electrodes, hindering its miniaturization and implantation, thereby limiting its application in real-time disease monitoring.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!