Ambient and personnel occupational dose assessment in a Hospital's PET/CT center

2021 ◽  
Vol 169 ◽  
pp. 109466
Author(s):  
Wei-Wei Yin ◽  
Xiang-Wu Zheng ◽  
Zhi-Qiang Wang ◽  
Wei-Jian Chen ◽  
Yeu-Sheng Tyan ◽  
...  
Keyword(s):  
Dose Assessment ◽  
Occupational Dose ◽  
Pet Ct

OCCUPATIONAL DOSE ASSESSMENT IN INTERVENTIONAL CARDIOLOGY IN SERBIA

2015 ◽  
Vol 170 (1-4) ◽  
pp. 279-283 ◽  
Author(s):  
J. Kaljevic ◽  
O. Ciraj-Bjelac ◽  
J. Stankovic ◽  
D. Arandjic ◽  
P. Bozovic ◽  
...  
Keyword(s):  
Interventional Cardiology ◽  
Dose Assessment ◽  
Occupational Dose

MODELLING AND SIMULATION FOR RADIOLOGICAL DOSE ASSESSMENT OF PSAMMOTHERAPY AND CLIMATOTHERPY

2020 ◽  
Vol 188 (3) ◽  
pp. 276-284
Author(s):  
Kh A Allam
Keyword(s):  
Reference Point ◽  
Gamma Ray ◽  
Natural Radionuclides ◽  
Absorbed Dose ◽  
Dose Assessment ◽  
Beach Sand ◽  
Dose Rates ◽  
Occupational Dose ◽  
Mathematical Simulations ◽  
Radiological Dose

Abstract Patient and occupational dose rates due to psammotherapy (sand therapy) and climatotherapy treatments in high natural background areas in Egypt have been evaluated. Monte Carlo mathematical simulations using adult human phantoms were applied to consider the effect of elevated 238U, 232Th and 40K concentrations and the nonhomogeneous distribution of natural radionuclides in beach sand. Three situations: phantom covered by sand or lying on the beach and points in air at several heights above sand level, were considered. The gamma-ray doses per treatment were calculated at a reference point located on the phantom surface centrally above the genital area. The thus calculated patient-absorbed-dose ranges at this reference point were 0.006–0.018 mGy and 0.004–0.023 mGy per climatotherapy and psammotherapy treatments, respectively.

Occupational dose assessment and National Dose Registry System in Iran

2010 ◽  
Vol 144 (1-4) ◽  
pp. 52-55 ◽  
Author(s):  
M. Jafari-zadeh ◽  
F. Nazeri ◽  
S. M. Hosseini-Pooya ◽  
M. Taheri ◽  
F. Gheshlaghi ◽  
...  
Keyword(s):  
Dose Assessment ◽  
Registry System ◽  
Occupational Dose

scholarly journals Comparison of passive and active radon measurement methods for personal occupational dose assessment

2016 ◽  
Vol 31 (1) ◽  
pp. 73-78
Author(s):  
Elham Hasanzadeh ◽  
Fereidoun Mianji ◽  
Asghar Sadighzadeh ◽  
Farhang Mizani
Keyword(s):  
Indoor Radon ◽  
Measurement Methods ◽  
Dose Assessment ◽  
Uranium Mine ◽  
Short Term ◽  
Radon Measurement ◽  
Active Method ◽  
Occupational Dose ◽  
Radon Concentrations

To compare the performance of the active short-term and passive long-term radon measurement methods, a study was carried out in several closed spaces, including a uranium mine in Iran. For the passive method, solid-state nuclear track detectors based on Lexan polycarbonate were utilized, for the active method, AlphaGUARD. The study focused on the correlation between the results obtained for estimating the average indoor radon concentrations and consequent personal occupational doses in various working places. The repeatability of each method was investigated, too. In addition, it was shown that the radon concentrations in different stations of the continually ventilated uranium mine were comparable to the ground floor laboratories or storage rooms (without continual ventilation) and lower than underground laboratories.

Radiation dose from 18F-FDG PET/CT procedures: influence of specific CT model and protocols

2018 ◽  
Vol 53 (2) ◽  
pp. 107-113
Author(s):  
B. Adeleye ◽  
N. Chetty
Keyword(s):  
Radiation Dose ◽  
Imaging Modality ◽  
Standard Dose ◽  
Ct Imaging ◽  
Dose Assessment ◽  
Radiological Protection ◽  
Study Protocols ◽  
Positron Emission ◽  
Pet Ct ◽  
Fdg Pet Ct

The increasing use of the integrated 18F-fluoro-deoxy-glucose (FDG) positron emission tomography/computed tomography (PET/CT) imaging modality in the management of tubercular lesions raises concerns about associated radiation exposure. This work aimed to study the effects of CT model and study protocols on the overall radiation dose from a PET/CT examination. Two PET/CT systems with five representative CT exposure protocols applied for clinical patients in PET/CT imaging following retrospective evaluation were studied. CT doses were calculated using the CT-Expo dosimetry software (version 2.4), while the PET component dose was estimated applying the International Commission on Radiological Protection (ICRP) 106 dose coefficients. The total effective dose ranged from 8.0 to 24.05 mSv for system I and 8.35 to 26.85 mSv for system II, resulting in differences of 4.3 to 15% for the low-dose scan and 4.1 to 11% for standard dose scans. The CT component contribution to the total dose was between 32 and 77% for system I, and 35 and 79% for system II. However, the contributions were not significantly different (p > 0.05) for all protocols. The observed variation in CT contribution represents a requisite pedestal on the need for a nation-wide dose assessment for further optimization of the imaging procedure to maximize benefit to patients.

1596: Lymph Node Staging in Prostate Cancer by the use of 11C-CHOLIN-PET/CT Scan Imaging

2005 ◽  
Vol 173 (4S) ◽  
pp. 432-432
Author(s):  
Georg C. Bartsch ◽  
Norbert Blumstein ◽  
Ludwig J. Rinnab ◽  
Richard E. Hautmann ◽  
Peter M. Messer ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Lymph Node ◽  
Ct Scan ◽  
Lymph Node Staging ◽  
Pet Ct ◽  
Pet Ct Scan

Diese unglaubliche Müdigkeit und immer wieder abends Fieber und Kopfschmerzen

Praxis ◽  
2017 ◽  
Vol 106 (19) ◽  
pp. 1061-1064
Author(s):  
Katharina Brodsky ◽  
Dominique Oberlin ◽  
Reto Nüesch
Keyword(s):  
Sich Eine ◽  
Pet Ct

Zusammenfassung. Wir berichten über einen 58-jährigen Patienten mit seit Monaten bestehender B-Symptomatik, rezidivierenden Fieberschüben begleitet von Kopfschmerzen und erhöhten Entzündungsparametern. In der Erstlinienabklärung ergaben sich keine eindeutigen Hinweise auf eine infektiologische oder rheumatologische Ursache, auffällig war lediglich eine mediastinale und hiläre Lymphadenopathie. Zum Ausschluss eines Malignoms wurde eine PET-CT durchgeführt, in der sich eine FDG-Aufnahme im Bereich der grossen Gefässe zeigte, passend zu einer Riesenzellarteritis. Bei eindeutigem Befund konnte auf einen Temporalarterienbiopsie verzichtet und eine Therapie mit Glukokortikoiden begonnen werden.

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