OBJECTIVE: Our objective was to assess the effect of orthopedic metallic prostheses on radiation dose associated with MDCT using z-axis automatic tube-current modulation and a fixed tube current in a phantom and patient study. CONCLUSION: Z-modulation is associated with a 34.1% increase in the mean tube current-time product and no change in the extent of streak artifacts in patients with a metallic prosthesis, compared with patients without a prosthesis. However, compared with the fixed-tube-current technique, z-modulation is associated with a 28.9% decrease in the mean tube current-time product.
OBJECTIVE: Our objective was to assess the effect of orthopedic metallic prostheses on radiation dose associated with MDCT using z-axis automatic tube-current modulation and a fixed tube current in a phantom and patient study. CONCLUSION: Z-modulation is associated with a 34.1% increase in the mean tube current-time product and no change in the extent of streak artifacts in patients with a metallic prosthesis, compared with patients without a prosthesis. However, compared with the fixed-tube-current technique, z-modulation is associated with a 28.9% decrease in the mean tube current-time product.
Authors: Giovanni Di Leo; Chiara Spadavecchia; Moreno Zanardo; Francesco Secchi; Ivan Veronese; Marie Claire Cantone; Francesco Sardanelli Journal: Eur Radiol Date: 2016-12-12 Impact factor: 5.315
Authors: Helena Ferris; Maria Twomey; Fiachra Moloney; Siobhan B O'Neill; Kevin Murphy; Owen J O'Connor; Michael Maher Journal: World J Radiol Date: 2016-04-28