Abstract
This main goal of this study was to evaluate image quality in single-energy (SE) and dual-energy (DE) CT imaging with the presence of barium and iodine. A fabricated polymethyl methacrylate abdomen phantom with 32 cm diameter size was used to mimic human abdomen. Two different contrast agents: barium and iodine, were scanned separately. The imaging parameters for SECT were set at tube voltage 80, 120 and 140 kV while the imaging parameters for DECT were set at fixed tube voltage 80/140 kV. Both scan modes were set at the different pitch: 0.6 and 1.0 mm, and the slice thickness was set at 3.0 and 5.0 mm with automatic exposure control for the tube current. The CT images obtained from both scanning were analysed to evaluate the signal-to-noise ratio (SNR). Barium and iodine gave highest SNR of 39.30 and 182.68, respectively, at a tube voltage of 140 kV, a pitch of 1 and a slice thickness of 3 mm for SECT. In DECT mode, the highest SNR for barium and iodine were 36.74 and 112.15 respectively at pitch 1 and slice thickness of 3 mm. There was no significant difference between SNR of barium and iodine obtained with both CT imaging modes with p-values of 0.75 and 0.12, respectively.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
He P, Wei B, Feng P, Chen M, Mi D (2013) Material discrimination based on K-edge characteristics. Comput Math Methods Med
Anderson NG, Butler AP, Scott NJA, Cook NJ, Butzer JS, Schleich N, Firsching M, Grasset R, Ruiter ND, Campbell M et al (2010) Spectroscopic (multi-energy) CT distinguishes iodine and barium contrast material in MICE. Eur Radiol 20:2126–2134
Bateman CJ, Rajendran K, Ruiter NJA, Butler AP, Butler PH, Renaud PF (2015) The hidden K-edge signal in K-edge imaging. 1–7 arXiv:1506.04223v1 [physics.med-ph]
He P, Wei B, Cong W, Wang G (2012) Optimization of K-edge imaging with spectral CT. Med Phys 39
Bae KT (2010) Intravenous contrast medium administration and scan timing at CT: considerations and approaches. Radiology 256
Nakayama Y, Awai K, Funama Y, Hatemura M, Imuta M, Nakaura T, Ryu D, Morishita S, Sultana S, Sato N et al (2005) Abdominal CT with low tube voltage: preliminary observations about radiation dose, contrast enhancement, image quality, and noise. Radiology 237:945–951
Buls N, Van Gompel G, Van Cauteren T, Nieboer K, Willekens I, Verfaillie G, Evans P, Macholl S, Newton B, Mey JD (2015) Contrast agent and radiation dose reduction in abdominal CT by a combination of low tube voltage and advanced image reconstruction algorithms. Eur J Radiol 25:1023–1031
Fessler J (2009). X-ray imaging : noise and SNR. Chapter 6, X-ray imaging noise SNR. 1–11
Hanson KM (1981) Noise and contrast discrimination in computed tomography. Radiol Skull Brain 5:3941–3955
Chaudhari A (2012) Improving signal to noise ratio of low-dose CT image using wavelet transform. Int J Comput Sci Eng 4:779–787
Goldman LW (2007) Principles of CT: radiation dose and image quality. J Nucl Med Technol 35:213–226
Goldman LW (2008) Principles of CT: multislice CT. J Nucl Med Technol 36:57–68
Yu L, Liu X, Leng S, Kofler JM, Ramirez-giraldo JC, Qu M, Christner J, Fletcher JG, McCollough CH (2012) Radiation dose reduction in computed tomography: techniques and future perspective. Imaging Med 1:65–84
Zukhi J, Yusob D, Tajuddin AA, Vuanghao L, Zainon R (2017) Evaluation of image quality and radiation dose using gold nanoparticles and other clinical contrast agents in dual-energy Computed Tomography (CT): CT abdomen phantom. IOP Conf Ser J Phys Conf Ser 851
Bongers MN, Schabel C, Krauss B, Claussen CD, Nikolaou K, Thomas C (2017) Potential of gadolinium as contrast material in second generation dual energy computed tomography—An ex vivo phantom study. Clin Imaging 43:74–79
Zhu X, Mccullough WP, Mecca P, Servaes S (2016) Dual-energy compared to single-energy CT in pediatric imaging: a phantom study for DECT clinical guidance. Pediatr Radiol 46:1671–1679
Yu L, Primak AN, Liu X, Mccollough CH (2009) Image quality optimization and evaluation of linearly mixed images in dual-source, dual-energy CT. Med Phys 36:1019–1024
Siemens AG (2008) Dual energy CT SOMATOM definition
Primak AN, Mccollough CH, Michael R, Zhang RTRJ, Fletcher JG (2006) Relationship between noise, dose, and pitch in cardiac multi—detector row CT. Radiographics. 1785–1795
Acknowledgements
The authors would like to acknowledge the financial support from Ministry of Higher Education through Fundamental Research Grant Scheme (FRGS).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Zukhi, J., Yusob, D., Tajuddin, A.A., Zainon, R. (2018). Image Quality Evaluation in Contrast Agents Computed Tomography Imaging. In: Zainon, R. (eds) 3rd International Conference on Radiation Safety & Security in Healthcare Services. Lecture Notes in Bioengineering. Springer, Singapore. https://doi.org/10.1007/978-981-10-7859-0_2
Download citation
DOI: https://doi.org/10.1007/978-981-10-7859-0_2
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-7858-3
Online ISBN: 978-981-10-7859-0
eBook Packages: EngineeringEngineering (R0)