Low-tube-voltage, high-tube-current abdominal computed tomography for increase the contrast to noise ratio in hepatocellular carcinoma diagnosis
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Abstract
Background: Hepatocellular carcinoma (HCC) is the most common primary malignant hepatic neoplasm. Multiphasic multi detector computed tomography (MDCT) is an efficient technique for determination of HCC, especially hepatic arterial phase images. The purpose of this study was to compare the effective dose and contrast to noise ratio of low tube voltage, high tube current CT technique for HCC detection and the conventional CT technique.
Methods: The retrospective analytic study was conducted among 152 patients who underwent MDCT in Surin Hospital between October 2015 and March 2017. Data analysis was used propensity score matching (PSM), student t-test and p-value<0.05.
Results: The CNR significantly increased from 76.33 to 26.69% (26.69%, p-value =0.0452) with low tube voltage, high tube current CT technique and the effective dose significantly decreased 6.59 to 3.5 mSv (46.9%, p-value<0.001).
Conclusion: The CNR increased and the effective dose reduced by using low tube voltage, high tube current CT technique for the HCC detection.
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References
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