Optimization of simulated cranial, thorax, and abdominal examination in paediatric digital radiography

N. N. Apriliastri, Samiyah, S. Bawono, A. Susilo, L. E. Lubis, A. Evianti, D. S. Soejoko

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1 Citation (Scopus)


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.

Original languageEnglish
Article number012023
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 6 Jun 2019
Event18th Asia-Oceania Congress of Medical Physics, AOCMP 2018 and 16th South-East Asia Congress of Medical Physics, SEACOMP 2018 - Bangsar South, Kuala Lumpur, Malaysia
Duration: 11 Nov 201814 Nov 2018


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