TY - JOUR
T1 - Flat-panel CT versus 128-slice CT in temporal bone imaging
T2 - Assessment of image quality and radiation dose
AU - Piergallini, Lorenzo
AU - Scola, Elisa
AU - Tuscano, Bruno
AU - Brambilla, Roberto
AU - Campoleoni, Mauro
AU - Raimondi, Gabriella
AU - Lombardi, Luciano
AU - Di Berardino, Federica
AU - Zanetti, Diego
AU - Sina, Clara
AU - Triulzi, Fabio
AU - Conte, Giorgio
PY - 2018/9/1
Y1 - 2018/9/1
N2 - Objective: We compared the image quality and radiation dose of flat-panel CT (FPCT) and multi-slice CT (MSCT) performed respectively with an angiographic unit and a 128-slice CT scanner. We investigated whether the higher spatial resolution of FPCT translated into higher image quality and we sought to eliminate inter-subject variability by scanning temporal bone specimens with both techniques. Materials and methods: Fifteen temporal bone specimens were imaged with FPCT and MSCT. Two neuroradiologists experienced in otoradiology evaluated 30 anatomical structures with a 0–2 score; 18 structures important from a clinical perspective were assigned a twofold value in calculation of the overall score. The radiation dose was calculated through the use of an anthropomorphic phantom. Results: The image quality was significantly higher for FPCT than MSCT for 10 of the 30 anatomical structures; the overall score was also significantly higher for FPCT (p = 0.001). The equivalent dose of the two techniques was very similar, but with different effective doses to the organs. Conclusion: FPCT performed on an angiographic unit provides higher image quality in temporal bone assessment compared to MSCT performed on a 128-slice CT scanner thanks to its higher spatial resolution, with comparable equivalent doses but different effective doses to the organs.
AB - Objective: We compared the image quality and radiation dose of flat-panel CT (FPCT) and multi-slice CT (MSCT) performed respectively with an angiographic unit and a 128-slice CT scanner. We investigated whether the higher spatial resolution of FPCT translated into higher image quality and we sought to eliminate inter-subject variability by scanning temporal bone specimens with both techniques. Materials and methods: Fifteen temporal bone specimens were imaged with FPCT and MSCT. Two neuroradiologists experienced in otoradiology evaluated 30 anatomical structures with a 0–2 score; 18 structures important from a clinical perspective were assigned a twofold value in calculation of the overall score. The radiation dose was calculated through the use of an anthropomorphic phantom. Results: The image quality was significantly higher for FPCT than MSCT for 10 of the 30 anatomical structures; the overall score was also significantly higher for FPCT (p = 0.001). The equivalent dose of the two techniques was very similar, but with different effective doses to the organs. Conclusion: FPCT performed on an angiographic unit provides higher image quality in temporal bone assessment compared to MSCT performed on a 128-slice CT scanner thanks to its higher spatial resolution, with comparable equivalent doses but different effective doses to the organs.
KW - Anatomy
KW - Cone-beam computed tomography
KW - Ear
KW - Multidetector computed tomography
KW - Radiation dosage
KW - Temporal bone
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U2 - 10.1016/j.ejrad.2018.07.013
DO - 10.1016/j.ejrad.2018.07.013
M3 - Article
AN - SCOPUS:85050480466
VL - 106
SP - 106
EP - 113
JO - European Journal of Radiology
JF - European Journal of Radiology
SN - 0720-048X
ER -