Efficient Use of Automatic Exposure Control Systems in Computed Tomography Requires Correct Patient Positioning

References

• Kalender WA, Wolf H, Suess C, Gies M, Greess H, Bautz WA. Dose reduction in CT by on-line tube current control: principles and validation on phantoms and cadavers. Eur Radiol 1999; 9: 323–8
   PubMed Web of Science ®Google Scholar
• Kalra MK, Naz N, Rizzo SMR, Blake MA. Computed tomography radiation dose optimization: scanning protocols and clinical applications of automatic exposure control. Curr Probl Diagn Radiol 2005; 34: 171–81
   Google Scholar
• McCollough CH, Bruesewitz MR, Kofler JM, Jr. CT dose reduction and dose management tools: overview of available options. Radiographics 2006; 26: 503–12
   PubMed Web of Science ®Google Scholar
• Toshiba. Operation manual. Aquilion TXT-101A Multislice CT scan system. Reference volume, OtawaraJapan: Toshiba Medical Systems Corporation; 2004–2005.
   Google Scholar
• Philips. Philips Brilliance CT, Philips Medical Systems. The Netherlands: Best; 2006.
   Google Scholar
• Kalender WA. Computed tomography. Fundamentals, system technology, image quality, applications. Publicis Corporate Publishing, Erlangen 2005
   Google Scholar
• Systems GM. Lightspeed Pro16 technical reference manual, operator reference. Rev 3 (07/05). GE Medical Systems, Milwaukee, WI 2005
   Google Scholar
• IMPACT. Evaluation report 06013 32 to 64 slice CT scanner evaluation report version 14. London: NHS; 2006.
   Google Scholar
• Rizzo S, Kalra M, Schmidt B, Dalal T, Suess C, Flohr T, et al. Comparison of angular and combined automatic tube current modulation techniques with constant tube current CT of the abdomen and pelvis. Am J Roentgenol 2006; 186: 673–9
   PubMed Web of Science ®Google Scholar
• Mulkens TH, Bellinck P, Baeyaert M, Ghysen D, Van Dijck X, Mussen E, et al. Use of an automatic exposure control mechanism for dose optimization in multi-detector row CT examinations: clinical evaluation. Radiology 2005; 237: 213–23
   PubMed Web of Science ®Google Scholar
• Kalra MK, Rizzo S, Maher MM, Halpern EF, Toth TL, Shepard JA, et al. Chest CT performed with z-axis modulation: scanning protocol and radiation dose. Radiology 2005; 237: 303–8
   Google Scholar
• Kalra MK, Maher MM, Toth TL, Kamath RS, Halpern EF, Saini S. Comparison of Z-axis automatic tube current modulation technique with fixed tube current CT scanning of abdomen and pelvis. Radiology 2004; 232: 347–53
   Google Scholar
• Mastora I, Remy-Jardin M, Delannoy V, Duhamel A, Scherf C, Suess C, et al. Multi-detector row spiral CT angiography of the thoracic outlet: dose reduction with anatomically adapted online tube current modulation and preset dose savings. Radiology 2004; 230: 116–24
   Google Scholar
• Brody AS. Balancing risk and benefits in medical radiography. RSNA categorial course in diagnostic radiology physics: from visible to invisible – the science and practice of X-ray imaging and radiation dose optimization, DP Frush, W Huda. RSNA, Oak Brook 2006; 51–6
   Google Scholar
• Brenner DJ. Radiation risks in diagnostic radiology. RSNA categorial course in diagnostic radiology physics: from visible to invisible – the science and practice of X-ray imaging and radiation dose optimization, DP Frush, W Huda. RSNA, Oak Brook 2006; 41–50
   Google Scholar
• ICRP. ICRP publication 102: managing patient dose in multi-detector computed tomography (MDCT). Ann ICRP 2007;37.
   Google Scholar
• Nagel HD. Fundamentals of CT dosimetry. Radiation exposure in computed tomography, HD Nagel. CTB Publications, Hamburg 2002; 5–14
   Google Scholar
• Brooks RA, Di Chiro G. Statistical limitations in x-ray reconstructive tomography. Med Phys 1976; 3: 237–40
   Google Scholar
• Toth T, Ge ZY, Daly MP. The influence of patient centering on CT dose and image noise. Med Phys 2007; 34: 3093–101
   Google Scholar
• Li J, Udayasankar UK, Toth TL, Seamans J, Small WC, Kalra MK. Automatic patient centering for MDCT: effect on radiation dose. Am J Roentgenol 2007; 188: 547–52
   Google Scholar
• Kalra MK, Maher MM, Kamath RS, Horiuchi T, Toth TL, Halpern EF, et al. Sixteen-detector row CT of abdomen and pelvis: study for optimization of z-axis modulation technique performed in 153 patients. Radiology 2004; 233: 241–9
   Google Scholar
• Keat N. CT scanner automatic exposure control systems. MHRA evaluation report 05016 (February 2005). Medicines and Healthcare products Regulatory Agency, London 2005
   Google Scholar
• Nickoloff EL, Dutta AK, Lu ZF. Influence of phantom diameter, kVp and scan mode upon computed tomography dose index. Medical Physics 2003; 30: 395–402
   Google Scholar
• Papadakis AE, Perisinakis K, Damilakis J. Angular on-line tube current modulation in multidetector CT examinations of children and adults: the influence of different scanning parameters on dose reduction. Med Phys 2007; 34: 2864–74
   PubMed Web of Science ®Google Scholar