Benefits of sinogram-affirmed iterative reconstruction in 0.4 mSv ultra-low-dose CT of the upper abdomen following transarterial chemoembolisation: comparison to low-dose and standard-dose CT and filtered back projection technique.

•Diagnostic image quality and radiation dose of ultra-low-dose CT of the upper abdomen using sinogram affirmed iterative reconstruction following transarterial chemoembolization in comparison to low-dose and standard dose CT and filtered back projection technique.•Ultra-low dose CT of the upper abdomen using sinogram affirmed iterative reconstruction allows for significant dose reduction by 88%.•Ultra-low dose CT of the upper abdomen using sinogram affirmed iterative reconstruction shows no losses in subjective and objective image quality.•Ultra-low dose CT using sinogram affirmed iterative reconstruction could be beneficial for patients with repetitive treatments.