SU-E-I-22: Dependence On Calibration Phantom and Field Area of the Conversion Factor Used to Calculate Skin Dose During Neuro-Interventional Fluoroscopic Procedures

2014 ◽  
Vol 41 (6Part5) ◽  
pp. 134-135 ◽  
Author(s):  
V K Rana ◽  
S Vijayan ◽  
S R Rudin ◽  
D R Bednarek
Keyword(s):  
Conversion Factor ◽  
Skin Dose ◽  
Calibration Phantom ◽  
Field Area

scholarly journals Optimization of the Maximum Skin Dose Measurement Technique Using Digital Imaging and Communication in Medicine—Radiation Dose Structured Report Data for Patients Undergoing Cerebral Angiography

Diagnostics ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 14
Author(s):  
Koichi Morota ◽  
Takashi Moritake ◽  
Keisuke Nagamoto ◽  
Satoru Matsuzaki ◽  
Koichi Nakagami ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Cerebral Angiography ◽  
Digital Imaging ◽  
Conversion Factor ◽  
Quadratic Function ◽  
Skin Dose ◽  
Estimation Model ◽  
Data Set ◽  
Structured Report ◽  
R Ratio

Understanding the maximum skin dose is important for avoiding tissue reactions in cerebral angiography. In this study, we devised a method for using digital imaging and communication in medicine—radiation dose structured report (DICOM-RDSR) data to accurately estimate the maximum skin dose from the total air kerma at the patient entrance reference point (Total Ka,r). Using a test data set (n = 50), we defined the mean ratio of the maximum skin dose obtained from measurements with radio-photoluminescence glass dosimeters (RPLGDs) to the Total Ka,r as the conversion factor, CFKa,constant, and compared the accuracy of the estimated maximum skin dose obtained from multiplying Total Ka,r by CFKa,constant (Estimation Model 1) with that of the estimated maximum skin dose obtained from multiplying Total Ka,r by the functional conversion factor CFKa,function (Estimation Model 2). Estimation Model 2, which uses the quadratic function for the ratio of the fluoroscopy Ka,r to the Total Ka,r (Ka,r ratio), provided an estimated maximum skin dose closer to that obtained from direct measurements with RPLGDs than compared with that determined using Estimation Model 1. The same results were obtained for the validation data set (n = 50). It was suggested the quadratic function for the Ka,r ratio provides a more accurate estimate of the maximum skin dose in real time.

EVALUATION OF OCCUPATIONAL RADIATION EXPOSURE IN A RADIO-DIAGNOSTIC FACILITY IN KATSINA- NIGERIA

2020 ◽  
Vol 4 (2) ◽  
pp. 722-729
Author(s):  
Usman Sani ◽  
Bashir Gide Muhammad ◽  
Dimas Skam Joseph ◽  
D. Z. Joseph
Keyword(s):  
Radiation Dose ◽  
Radiation Exposure ◽  
Short Exposure ◽  
Skin Dose ◽  
Continuous Training ◽  
Short Exposure Time ◽  
Occupational Dose ◽  
Dose Limits ◽  
Radiation Workers ◽  
Occupational Radiation

Poor implementation of quality assurance programs in the radiation industry has been a major setback in our locality. Several studies revealed that occupational workers are exposed to many potential hazards of ionizing radiation during radio-diagnostic procedures, yet radiation workers are often not monitored. This study aims to evaluate the occupational exposure of the radiation workers in Federal Medical Centre Katsina, and to compare the exposure with recommended occupational radiation dose limits. The quarterly readings of 20 thermo-luminescent dosimeters (TLDs') used by the radiation workers from January to December, 2019 were collected from the facility's radiation monitoring archive, and subsequently assessed and analyzed. The results indicate that the average annual equivalent dose per occupational worker range from 0.74 to 1.20 mSv and 1.28 to 2.21 mSv for skin surface and deep skin dose, measured at 10 mm and 0.07 mm tissue depth respectively. The occupational dose was within the recommended national and international limits of 5 mSv per annum or an average of 20 mSv in 5 years. Therefore, there was no significant radiation exposure to all the occupational workers in the study area. Though, the occupational radiation dose is within recommended limit, this does not eliminate stochastic effect of radiation. The study recommended that the occupational workers should adhere and strictly comply with the principles of radiation protection which includes distance, short exposure time, shielding and proper monitoring of dose limits. Furthermore, continuous training of the radiation workers is advised.

Lifetime Evaluation of Oil-immersed Power Capacitor using Conversion Factor between Model Sample and Practical Equipment

2011 ◽  
Vol 131 (3) ◽  
pp. 329-334
Author(s):  
Masakazu Higashiyama ◽  
Ken-ichi Akiyama ◽  
Teruhiko Maeda ◽  
Shuhei Nakamura ◽  
Hiro Umemura ◽  
...  
Keyword(s):  
Conversion Factor ◽  
Model Sample

PEMILIHAN KEPLING TELADAN MENERAPKAN METODE RANK ORDER CENTROID (ROC) DAN METODE ADDITIVE RATIO ASSESSMENT (ARAS) DI KECAMATAN MEDAN AREA

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Liza Handayani ◽  
Muhammad Syahrizal ◽  
Kennedi Tampubolon
Keyword(s):  
Decision Making ◽  
Decision Support ◽  
Decision Support System ◽  
Support System ◽  
Rank Order ◽  
Priority Level ◽  
The Village ◽  
Field Area ◽  
Selection Of

The head of the environment is an extension of the head of the village head in assisting or providing services to the community both in the administration of administration in the village and to other problems. It is natural for a kepling to be appreciated for their performance during their special tenure in the kecamatan field area. Previously, the selection of a dipling in a sub-district was very inefficient and seemed unfair for this exemplary selection to use a system to produce an accurate value, and no intentional element. To overcome the process of selecting an exemplary kepling that experiences these obstacles by using an application called a Decision Support System. Decision Support System (SPK) is a system that can solve a problem, and this system is also assisted with several methods, namely the Rank Order Centroid (ROC) method that can assign weight values to each of the criteria based on their priority level. And to do the ranking or determine an exemplary set using the Additive Ratio Assessment (ARAS) method, this method provides decision making that takes decisions based on ranking or the highest value.Keywords: Head of Medan Area Subdistrict, SPK, Centroid Rank Order, Additive Ratio Assessment (ARAS).

EFEKTIFITAS PENGELOLAAN DANA DESA UNTUK PEMBANGUNAN DAN PEMBERDAYAAN MASYARAKAT DESA DI KABUPATEN BONDOWOSO

2019 ◽  
Vol 4 (1) ◽  
pp. 9-20
Author(s):  
Boedijono Boedijono ◽  
Galih Wicaksono ◽  
Yeni Puspita ◽  
Sandhika Cipta Bidhari ◽  
Nurcahyaning Dwi Kusumaningrum ◽  
...  
Keyword(s):  
Rural Communities ◽  
Qualitative Methods ◽  
Economic Empowerment ◽  
Quantitative And Qualitative Methods ◽  
Field Area

The purpose of this study was to find out how to manage village finance and the effectiveness of managing village funds for development and economic empowerment of rural communities in Bondowoso District. Three sub-districts in the Bondowoso District, namely Curahdami, Wonoasri, and Tenggarang Subdistricts as field area, and the combination of quantitative and qualitative methods were used. The results of this study indicate that: the villages in Bondowoso District have managed village finances well, but in certain cases, they are still not orderly in administration, so that they sometimes experience delays in disbursing village finance for the following period. The discussion and implications of the findings are discussed in the article.

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