TY - JOUR
T1 - Optimization of simulated cranial, thorax, and abdominal examination in paediatric digital radiography
AU - Apriliastri, N. N.
AU - Samiyah,
AU - Bawono, S.
AU - Susilo, A.
AU - Lubis, L. E.
AU - Evianti, A.
AU - Soejoko, D. S.
N1 - Funding Information:
This work was funded by Universitas Indonesia’s Indexed International Publication Grant for Student Final Project 2018 (Hibah PITTA UI 2018) with contract number 2278/UN2.R3.1/HKP.05.00/2018. It was also supported by the International Atomic Energy Agency (IAEA) through Coordinated Research Project E2.40.20 entitled “Evaluation and Optimization of Paediatric Imaging” (contract number 19108).
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019/6/6
Y1 - 2019/6/6
N2 - This study was aimed to obtain optimum parameter combination in simulated cranial, thorax, and abdominal examinations using computed radiography (CR) and direct digital radiography (DDR) systems. Optimization was performed using in-house phantom with contrast objects on Siemens Luminos Agile Max DDR and Siemens Axiom Luminos TF CR. Paediatric patients were separated into four age groups; 0-1 year (group A), 1-5 years (group B), 5-10 years (group C), and 10-15 years (group D). Slab phantoms with different total thickness were used to simulate patients belonging to each age group for different anatomical region (cranial, thorax, and abdomen). Optimization were performed in three steps; first kVp, followed by mAs, and then additional filter optimization. All the steps of optimization were performed based on FOM (figure of merit) values calculated as ratio of squared SDNR (signal difference to noise ratio) and entrance surface dose with the highest FOM representing the optimum condition. The results of this optimization were evaluated based on the highest FOM generated from each exposure. For both CR and DDR, optimum parameters (i.e. highest FOM) are different for each age group and anatomical region. Even with different X-Ray units, the CR device had slightly similar optimized parameters.
AB - This study was aimed to obtain optimum parameter combination in simulated cranial, thorax, and abdominal examinations using computed radiography (CR) and direct digital radiography (DDR) systems. Optimization was performed using in-house phantom with contrast objects on Siemens Luminos Agile Max DDR and Siemens Axiom Luminos TF CR. Paediatric patients were separated into four age groups; 0-1 year (group A), 1-5 years (group B), 5-10 years (group C), and 10-15 years (group D). Slab phantoms with different total thickness were used to simulate patients belonging to each age group for different anatomical region (cranial, thorax, and abdomen). Optimization were performed in three steps; first kVp, followed by mAs, and then additional filter optimization. All the steps of optimization were performed based on FOM (figure of merit) values calculated as ratio of squared SDNR (signal difference to noise ratio) and entrance surface dose with the highest FOM representing the optimum condition. The results of this optimization were evaluated based on the highest FOM generated from each exposure. For both CR and DDR, optimum parameters (i.e. highest FOM) are different for each age group and anatomical region. Even with different X-Ray units, the CR device had slightly similar optimized parameters.
UR - http://www.scopus.com/inward/record.url?scp=85067647237&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1248/1/012023
DO - 10.1088/1742-6596/1248/1/012023
M3 - Conference article
AN - SCOPUS:85067647237
VL - 1248
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012023
T2 - 18th Asia-Oceania Congress of Medical Physics, AOCMP 2018 and 16th South-East Asia Congress of Medical Physics, SEACOMP 2018
Y2 - 11 November 2018 through 14 November 2018
ER -