OBJECTIVE: Our objective was to develop a better understanding of the complex interrelationship between image noise, reconstruction slice thickness, and patient radiation dose on a 64-MDCT scanner that uses automated tube current modulation. MATERIALS AND METHODS: We reviewed physics theory and performed phantom dose measurements on a 64-MDCT scanner while altering operator-selectable image noise and reconstruction slice thickness. RESULTS: Using phantom dose measurements to adjust theoretic predictions, we constructed both a spreadsheet and a graph that visually display the interrelationships between operator-selected image noise and reconstruction slice thickness and the resulting patient dose. CONCLUSION: This table and graph may help operators understand the trade-offs when prospectively trying to minimize dose and optimize image noise for selected reconstruction slice thicknesses on this type of 64-MDCT scanner.
OBJECTIVE: Our objective was to develop a better understanding of the complex interrelationship between image noise, reconstruction slice thickness, and patient radiation dose on a 64-MDCT scanner that uses automated tube current modulation. MATERIALS AND METHODS: We reviewed physics theory and performed phantom dose measurements on a 64-MDCT scanner while altering operator-selectable image noise and reconstruction slice thickness. RESULTS: Using phantom dose measurements to adjust theoretic predictions, we constructed both a spreadsheet and a graph that visually display the interrelationships between operator-selected image noise and reconstruction slice thickness and the resulting patient dose. CONCLUSION: This table and graph may help operators understand the trade-offs when prospectively trying to minimize dose and optimize image noise for selected reconstruction slice thicknesses on this type of 64-MDCT scanner.
Authors: Ravi K Kaza; Joel F Platt; Mitchell M Goodsitt; Mahmoud M Al-Hawary; Katherine E Maturen; Ashish P Wasnik; Amit Pandya Journal: Radiographics Date: 2014 Jan-Feb Impact factor: 5.333
Authors: Barbaros S Erdal; Luciano M Prevedello; Songyue Qian; Mutlu Demirer; Kevin Little; John Ryu; Thomas O'Donnell; Richard D White Journal: J Digit Imaging Date: 2018-02 Impact factor: 4.056
Authors: Lee M Mitsumori; William P Shuman; Janet M Busey; Orpheus Kolokythas; Kent M Koprowicz Journal: Eur Radiol Date: 2011-06-18 Impact factor: 5.315