Linear attenuation coefficients of tissues from 1keV to 150keV

Böke, Aysun

doi:10.1016/j.radphyschem.2014.04.006

Cited by 27 publications

(7 citation statements)

References 64 publications

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“…In contrast, the X-ray luminescence intensity is dependent on the cations K-edge (Sc −4.486 keV; La −38.894 keV; Pr −41.958 keV; Nd −43.538 keV and from Sm −46.801 keV to Lu −63.311 keV) and X-ray energy. X-ray activated near-infrared luminescence benefits from deep penetration in both excitation (Mo X-ray source, less than 5 cm penetration depth 76 ) and emission (around 1 cm penetration depth for 1500–1550 nm) 17 . Keeping in mind the obvious advantages offered for deep penetration bio-imaging applications, targeted studies using X-ray induced NIR emission in biocompatible nanoparticles are emerging (e.g.…”

Section: Resultsmentioning

confidence: 99%

Near infrared emission properties of Er doped cubic sesquioxides in the second/third biological windows

Avram

Tiseanu

Vasile

et al. 2018

Sci Rep

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In the recent years, there is an extensive effort concentrated towards the development of nanoparticles with near-infrared emission within the so called second or third biological windows induced by excitation outside 800–1000 nm range corresponding to the traditional Nd (800 nm) and Yb (980 nm) sensitizers. Here, we present a first report on the near-infrared (900–1700 nm) emission of significant member of cubic sesquioxides, Er-Lu2O3 nanoparticles, measured under both near-infrared up-conversion and low energy X-ray excitations. The nanoparticle compositions are optimized by varying Er concentration and Li addition. It is found that, under ca. 1500 nm up-conversion excitation, the emission is almost monochromatic (>93%) and centered at 980 nm while over 80% of the X-ray induced emission is concentrated around 1500 nm. The mechanisms responsible for the up-conversion emission of Er - Lu2O3 are identified by help of the up-conversion emission and excitation spectra as well as emission decays considering multiple excitation/emission transitions across visible to near-infrared ranges. Comparison between the emission properties of Er-Lu2O3 and Er-Y2O3 induced by optical and X-ray excitation is also presented. Our results suggest that the further optimized Er-doped cubic sesquioxides represent promising candidates for bioimaging and photovoltaic applications.

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Section: Resultsmentioning

confidence: 99%

Near infrared emission properties of Er doped cubic sesquioxides in the second/third biological windows

Avram

Tiseanu

Vasile

et al. 2018

Sci Rep

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“…The atomic parameter for some compounds of Na, Mg, Al, Ca, and Fe has been measured by [3]. The attenuation coefficients and photon interaction cross-sections of human tissues are calculated in good agreement with experimental values [ 4,5,6 ].…”

Section: Introductionmentioning

confidence: 55%

Measurement of Mass Attenuation Coefficients for Some Potassium Compounds

Akça¹

2019

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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In this study, the mass attenuation coefficients of some potassium compounds (KH2PO4, KNO3, K2S2O8, KOH, K2HPO4, K2SO4, KCl, KIO3, and KI) have been measured by using Energy Dispersive X-ray Fluorescence Spectrometer (EDXRFS) and a high-resolution Si(Li) detector for 59.54 keV energy. Obtained experimental mass attenuation coefficients have been compared with WinXCom (Windows-Photon Cross Sections Database) and FFAST (X-Ray Form Factor, Attenuation and, Scattering Tables) theoretical values.

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“…The mass attenuation coefficient (MAC), effective atomic number (Z eff ), half-value layer (HVL), equivalent atomic number (Z eq ), and linear atomic coefficient (LAC) of the HS/PDMS 20:80 sample are tabulated in Table 3. Several works measured the LAC within the diagnostic radiology energy range, which was from 30 to 110 keV [27][28][29]. The calculated LAC for PDMS samples were compared with these previous works, and this comparison is shown in Table 4.…”

Section: Resultsmentioning

confidence: 99%

Mechanical and Imaging Properties of a Clinical-Grade Kidney Phantom Based on Polydimethylsiloxane and Elastomer

et al. 2022

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Medical imaging phantoms are considered critical in mimicking the properties of human tissue for calibration, training, surgical planning, and simulation purposes. Hence, the stability and accuracy of the imaging phantom play a significant role in diagnostic imaging. This study aimed to evaluate the influence of hydrogen silicone (HS) and water (H2O) on the compression strength, radiation attenuation properties, and computed tomography (CT) number of the blended Polydimethylsiloxane (PDMS) samples, and to verify the best material to simulate kidney tissue. Four samples with different compositions were studied, including samples S1, S2, S3, and S4, which consisted of PDMS 100%, HS/PDMS 20:80, H2O/PDMS 20:80, and HS/H2O/PDMS 20:40:40, respectively. The stability of the samples was assessed using compression testing, and the attenuation properties of sample S2 were evaluated. The effective atomic number of S2 showed a similar pattern to the human kidney tissue at 1.50 × 10−1 to 1 MeV. With the use of a 120 kVp X-ray beam, the CT number quantified for S2, as well measured 40 HU, and had the highest contrast-to-noise ratio (CNR) value. Therefore, the S2 sample formulation exhibited the potential to mimic the human kidney, as it has a similar dynamic and is higher in terms of stability as a medical phantom.

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Linear attenuation coefficients of tissues from 1keV to 150keV

Cited by 27 publications

References 64 publications

Near infrared emission properties of Er doped cubic sesquioxides in the second/third biological windows

Near infrared emission properties of Er doped cubic sesquioxides in the second/third biological windows

Measurement of Mass Attenuation Coefficients for Some Potassium Compounds

Mechanical and Imaging Properties of a Clinical-Grade Kidney Phantom Based on Polydimethylsiloxane and Elastomer

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