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B-0129 - The impact of new generation scanner CT and ASIR-V on dose reduction and image quality

M. Gatti, M. Fronda, D. Castellano, P. isoardi, F. Marchisio, O. Rampado, R. ropolo, P. Fonio, G. Gandini; Turin/IT Type: Scientific Paper
Area of Interests: Oncology, Radiation physics, Radioprotection / Radiation dose
Imaging Technique: CT
Procedures: Dosimetry, Radiation safety
Special Focus: Dosimetric comparison
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Purpose: Computed tomography (CT) is by far the most important source of medical radiation exposure. [1] The concerns for the increasing potential radiation-induced malignancies from CT continue to escalate. [1,2] Dose reduction has thus become an hot topic and variable dose reduction techniques without comp[...]

Methods and materials: Study Design and Population The study is a retrospective analysis of patients who underwent contrast-enhanced portal venous phase routine CT both with Optima+ASIR and Revolution+ASIR-V during their oncological follow-up. The study sample consisted of 38 patients (66.3±10.0 years, 13 females, BMIndex[...]

Results: Dose reduction In the Revolution+ASIR-V study dose-length product [DLP=448.5mGy-cm (Interquartiles 362.8-489.1)] and CT dose index [CTDI=7.1(6.60-7.98) mGy] were significantly lower (p<0.0001) than those of Optima+ASIR [DLP=696.36(566.9-807.2) mGy-cm and CTDI= 12.20 (10.57-14.22) mGy]. In particu[...]

Conclusion: We investigated the impact on dose reduction and image quality of a new generation scanner CT equipped with adaptive statistical iterative reconstruction (ASIR-V) in oncologic patients. Our study showed that: 1.     New generation scanner CT equipped with ASIR-V facilitates a radiatio[...]

Personal information: Marco Gatti, MD marcogatti17@gmail.com   University of Torino, Department of Surgical Sciences, Radiology Unit   Via Genova 3, 10126 Torino tel: +39 011 6336622 fax: +39 011 6960310

References: 1.    Brenner DJ, Hall EJ. Computed tomography--an increasing source of radiation exposure. N Engl J Med. 2007 Nov 29;357(22):2277–84. 2.     Thrall JH. Radiation Exposure in CT Scanning and Risk: Where Are We? Radiology. 2012 Aug 1;264(2):325–8. 3.     Gudjó[...]

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