Evaluation of Organ Dose and Image Quality Metrics of Pediatric CT Chest-Abdomen-Pelvis (CAP) Examination: An Anthropomorphic Phantom Study
Source abstract
Abstract
The aim of this study is to investigate the impact of CT acquisition parameter setting on organ dose and its influence on image quality metrics in pediatric phantom during CT examination. The study was performed on 64-slice multidetector CT scanner (MDCT) Siemens Definition AS (Siemens Sector Healthcare, Forchheim, Germany) using various CT CAP protocols (P1–P9). Tube potential for P1, P2, and P3 protocols were fixed at 100 kVp while P4, P5, and P6 were fixed at 80 kVp with used of various reference noise values. P7, P8, and P9 were the modification of P1 with changes on slice collimation, pitch factor, and tube current modulation (TCM), respectively. TLD-100 chips were inserted into the phantom slab number 7, 9, 10, 12, 13, and 14 to represent thyroid, lung, liver, stomach, gonads, and skin, respectively. The image quality metrics, signal to noise ratio (SNR) and contrast to noise ratio (CNR) values were obtained from the CT console. As a result, this study indicates a potential reduction in the absorbed dose up to 20% to 50% along with reducing tube voltage, tube current, and increasing the slice collimation. There is no significant difference (p > 0.05) observed between the protocols and image metrics.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Radiation Dose and Imaging · Advanced X-ray and CT Imaging · Medical Imaging Techniques and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics, Faculty of Science, University Putra Malaysia, Serdang 43400, Malaysia
Department of Radiology, Faculty of Medicine, University Putra Malaysia, Serdang 43400, Malaysia
Department of Biomedical Imaging, University Malaya Medical Centre, Petaling Jaya 59100, Kuala Lumpur, Malaysia
Funding
Ministry of Higher Education
References (52)
Show source-provided references
1. Role of CT and MRI in the design and development of orthopaedic model using additive manufacturing10.1016/j.jcot.2018.07.002 ↗
2. Improving spatial resolution at CT: Development, benefits, and pitfalls10.1148/radiol.2018181156 ↗
3. Vendor free basics of radiation dose reduction techniques for CT10.1016/j.ejrad.2018.11.002 ↗
4. Improved image quality and low radiation dose with hybrid iterative reconstruction with 80kV CT pulmonary angiography10.1016/j.ejrad.2014.06.016 ↗
5. Automatic tube current modulation and tube voltage selection in pediatric computed tomography: A phantom study on radiation dose and image quality10.1097/RLI.0000000000000537 ↗
6. Estimation of effective dose and lifetime attributable risk from multiple head CT scans in ventriculoperitoneal shunted children10.1016/j.ejrad.2014.07.006 ↗
7. Estimation of effective dose and organ cancer risk from paediatric computed tomography thorax-Abdomen-Pelvis examinations10.1016/j.radphyschem.2019.108438 ↗
8. CT radiation dose awareness among paediatricians
9. Computed tomographies and cancer risk in children: A literature overview of CT practices, risk estimations and an epidemiologic cohort study proposal10.1007/s00411-012-0405-1 ↗
10. Comparison of patient dose from routine multi-phase and dynamic liver perfusion CT studies taking into account the effect of iodinated contrast administration10.1016/j.ejrad.2018.11.015 ↗
11. Image gently: A Decade of international collaborations to promote appropriate imaging for children10.1016/j.jacr.2017.04.039 ↗
12. CT radiation dose management10.1148/radiol.2016151173 ↗
13. Increased radiation dose and projected radiation-related lifetime cancer risk in patients with obesity due to projection radiography10.1088/1361-6498/aaf1dd ↗
14. Task-based quantification of image quality using a model observer in abdominal CT: A multicentre study10.1007/s00330-018-5518-8 ↗
15. Evaluation of organ doses and specific k effective dose of 64-slice CT thorax examination using an adult anthropomorphic phantom10.1016/j.radphyschem.2016.05.004 ↗
16. A comparison of pediatric and adult CT organ dose estimation methods10.1186/s12880-017-0199-3 ↗
17. Pediatric CT radiation exposure: Where we were, and where we are now10.1007/s00247-018-4281-y ↗
18. CT-expo—A novel program for dose evaluation in CT
19. Lifetime attributable risk of cancer from radiation exposure during parathyroid imaging: Comparison of 4D CT and parathyroid scintigraphy10.2214/AJR.14.13278 ↗
20. Radiation risk index for pediatric CT: A patient-derived metric10.1007/s00247-017-3973-z ↗
21. Single-source chest-abdomen-pelvis cancer staging on a third generation dual-source CT system: Comparison of automated tube potential selection to second generation dual-source CT10.1186/s40644-016-0093-1 ↗
22. Patient-specific organ and effective dose estimates in pediatric oncology computed tomography
23. Dose optimisation in paediatric CT examination: Assessment on current scanning protocols associated with radiation dose10.1016/j.radphyschem.2020.108740 ↗
24. Halid, B., Karim, M.K.A., Sabarudin, A., Bakar, K.A., and Shariff, N.D. (2017). Assessment of lifetime attributable risk of stomach and colon cancer during abdominal ct examinations based on Monte Carlo simulation. Proceedings of the 8th European Medical and Biological Engineering Conference, Springer International Publishing.10.1007/978-981-10-4361-1_77 ↗
25. Optimizing the exposure indicator as a dose management strategy in computed radiography
26. Diagnostic reference levels and monitoring practice can help reduce patient dose from ct examinations10.2214/AJR.16.16361 ↗
27. Assessment of knowledge and awareness among radiology personnel regarding current computed tomography technology and radiation dose10.1088/1742-6596/694/1/012031 ↗
28. The effects of mis-centering on radiation dose during CT head examination: A phantom study
29. Effect of miscentering and low-dose protocols on contrast resolution in computed tomography head examination10.1016/j.compbiomed.2020.103840 ↗
30. The influence of iterative reconstruction level on image quality and radiation dose in CT pulmonary angiography examinations10.1016/j.radphyschem.2020.108989 ↗
31. Harun, H.H., Karim, M.K.A., Abbas, Z., Rahman, M.A.A., Sabarudin, A., and Ng, K.H. (2020). Association of radiation doses and cancer risks from ct pulmonary angiography examinations in relation to body diameter. Diagnostics, 10.10.3390/diagnostics10090681 ↗
32. Use of artificial intelligence in computed tomography dose optimisation10.1177/0146645320940827 ↗
33. Image quality and radiation dose of ECG-triggered High-Pitch Dual-Source cardiac computed tomography angiography in children for the evaluation of central vascular stents10.1007/s10554-019-01539-3 ↗
34. Deep learning algorithm for auto-delineation of high-risk oropharyngeal clinical target volumes with built-in dice similarity coefficient parameter optimization function10.1016/j.ijrobp.2018.01.114 ↗
35. Low-dose cone-beam CT via raw counts domain low-signal correction schemes: Performance assessment and task-based parameter optimization (Part II. Task-based parameter optimization)10.1002/mp.12856 ↗
36. Successful dose reduction using reduced tube voltage with hybrid iterative reconstruction in pediatric abdominal CT10.2214/AJR.14.12698 ↗
37. Radiation dose reduction at pediatric CT: Use of low tube voltage and iterative reconstruction10.1148/rg.2018180041 ↗
38. Image quality and dose optimisation for infant CT using a paediatric phantom10.1007/s00330-015-3951-5 ↗
39. Estimating effective dose of radiation from pediatric cardiac CT angiography using a 64-MDCT scanner: New conversion factors relating dose-length product to effective dose10.2214/AJR.15.15908 ↗
40. Gariani, J., Martin, S.P., Botsikas, D., Becker, C.D., and Montet, X. (2018). Evaluating the effect of increased pitch, iterative reconstruction and dual source CT on dose reduction and image quality. Br. J. Radiol., 91.10.1259/bjr.20170443 ↗
41. Efficacy of a dynamic collimator for overranging dose reduction in a second- and third-generation dual source CT scanner10.1007/s00330-017-4745-8 ↗
42. Evaluation of an adaptive detector collimation for prospectively ECG-triggered coronary CT angiography with third-generation dual-source CT10.1007/s00330-017-5177-1 ↗
43. Overranging and overbeaming measurement in area detector computed tomography: A method for simultaneous measurement in volume helical acquisition10.1002/acm2.12650 ↗
44. CT Systems10.1007/s40134-012-0005-5 ↗
45. Optimization of dose and image quality in adult and pediatric computed tomography scans10.1016/j.radphyschem.2017.02.006 ↗
46. Harun, H.H., Karim, M.K.A., Muhammad, N.A., Razak, H.R.A., Sabarudin, A., and Muniandy, S.C. (2020). Effect of iterative reconstruction algorithm associated with low contrast detectability performance from CT pulmonary angiography examinations. J. Phys. Conf. Ser., 012029.10.1088/1742-6596/1505/1/012029 ↗
47. Potential of a machine-learning model for dose optimization in CT quality assurance10.1007/s00330-019-6013-6 ↗
48. Roshani, M., Phan, G., Faraj, R.H., Phan, N.-H., Roshani, G.H., Nazemi, B., Corniani, E., and Nazemi, E. (2020). Proposing a gamma radiation based intelligent system for simultaneous analyzing and detecting type and amount of petroleum by-products. Nucl. Eng. Technol.10.1016/j.net.2020.09.015 ↗
49. Combination of X-ray tube and GMDH neural network as a nondestructive and potential technique for measuring characteristics of gas-oil–water three phase flows10.1016/j.measurement.2020.108427 ↗
50. Spark architecture for deep learning-based dose optimization in medical imaging10.1016/j.imu.2020.100335 ↗
51. Artificial intelligence in image reconstruction: The change is here10.1016/j.ejmp.2020.11.012 ↗
52. Image quality in CT: From physical measurements to model observers10.1016/j.ejmp.2015.08.007 ↗