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Past investigations into the characterization of a space-constrained Cs dosimetry calibration facility did not provide detailed positional measurements of gamma ray spectra. In this paper, a commercially available Compton imaging system, or imaging spectrometer, was used to accomplish this. This resulted in both spectral information and point of origin information for the measured gamma rays. The relationship between measured spectra and position was explored relative to a dosimetry phantom. The Compton equation was found to accurately describe the relationship for positions associated with larger scattering angles and was found to be less reliable for those associated with smaller angles.
This article was published in the following journal.
Name: Health physics
At the French synchrotron facility SOLEIL, a new X-ray imaging facility PUMA (Photons Utilisés pour les Matériaux Anciens) has been made available to scientific communities studying materials from c...
We demonstrate a calibration-free time-stretch optical coherence tomography (TS-OCT), based on an optical higher order dispersion compensation scheme, which substitutes the digital calibration with op...
As an image-spectrum merging technology, the hyperspectral sensor has become an important part in remote sensing. The spectral calibration results of the hyperspectral sensor measured in the laborator...
This work evaluated the use of a class solution specific calibration for an extra-large BaFBr based Optically Stimulated Luminescence film (OSL; 43x35cm²; Zeff =4.55). The clinical need for such larg...
Owing to high accuracy in the whole measurement range, the compensator-rotating method is a main approach for the single-point ellipsometric measurement. The disadvantage of this method is the complex...
The purpose of this study is to explore the use of a treatment called interstitial brachytherapy for patients who have a high risk resectable (able to be treated with surgery) recurrent he...
This pilot clinical trial studies cesium Cs 131 brachytherapy in treating patients with head and neck cancer that has come back (recurrent) and can be removed by surgery. Brachytherapy, al...
This study aims to compare the difference in staple usage and post-operative GERD (heartburn) between patients that had an endoscope used versus patients that had a suction calibration sys...
The purpose of this study is to: 1. Identification and characterization of ovarian carcinoma well-known biomarkers, CA125 and HE4 and other potential biomarkers in vaginal fluids o...
Calibration of a software module that computes Oxygen saturation(SpO2) based on photoplethysmography (PPG) traces acquired by the NightOwl reflectance-based PPG sensor which is placed on t...
Stable cesium atoms that have the same atomic number as the element cesium, but differ in atomic weight. Cs-133 is a naturally occurring isotope.
Unstable isotopes of cesium that decay or disintegrate emitting radiation. Cs atoms with atomic weights of 123, 125-132, and 134-145 are radioactive cesium isotopes.
The use of molecularly targeted imaging probes to localize and/or monitor biochemical and cellular processes via various imaging modalities that include RADIONUCLIDE IMAGING; ULTRASONOGRAPHY; MAGNETIC RESONANCE IMAGING; fluorescence imaging; and MICROSCOPY.
A member of the alkali metals. It has an atomic symbol Cs, atomic number 50, and atomic weight 132.91. Cesium has many industrial applications, including the construction of atomic clocks based on its atomic vibrational frequency.
The use of combination of imaging techniques or platforms (e.g., MRI SCAN and PET SCAN) encompassing aspects of anatomical, functional, or molecular imaging methods.