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ECR 2014 / C-0306
Repeated CT examinations, radiation dose and attributable cancer risk in patients with lymphoma
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Congress: ECR 2014
Poster No.: C-0306
Type: Scientific Exhibit
Keywords: Lymphoma, Dosimetric comparison, Biological effects, Radiation safety, Radiation effects, Dosimetry, MR-Diffusion/Perfusion, CT, Radioprotection / Radiation dose, Oncology, Lymph nodes
Authors: S. Kharuzhyk, E. Leusik; Minsk/BY

Methods and materials

50 patients with lymphoma (19 HD and 31 NHL, 25 males and 25 females, aged 18-83 y. o.) who were treated in our institution in 2010-2011 were included in this retrospective study. All patients completed treatment and entered follow-up by the time of analysis (November 2013). Average follow-up period was 9.1 months (range 0-31 month). CT examinations starting 4 months before start of treatment till the time of analysis were searched on radiology server. Cumulative effective dose per patient was calculated by multiplying number of exams by mean effective dose from national CT radiation doses survey per examination type: neck/thorax/abdomen/pelvis – 2.6/6.9/7.0/7.8 mSv [5]. Attributable risk of cancer was calculated using ICRP publication 103 coefficient 4.1×10-2×Sv-1 [3].

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