PMID- 27412514 OWN - NLM STAT- MEDLINE DCOM- 20180207 LR - 20180207 IS - 1742-3406 (Electronic) IS - 0144-8420 (Linking) VI - 172 IP - 1-3 DP - 2016 Dec TI - Radiation Dose Estimation by Automated Cytogenetic Biodosimetry. PG - 207-217 LID - 10.1093/rpd/ncw161 [doi] AB - The dose from ionizing radiation exposure can be interpolated from a calibration curve fit to the frequency of dicentric chromosomes (DCs) at multiple doses. As DC counts are manually determined, there is an acute need for accurate, fully automated biodosimetry calibration curve generation and analysis of exposed samples. Software, the Automated Dicentric Chromosome Identifier (ADCI), is presented which detects and discriminates DCs from monocentric chromosomes, computes biodosimetry calibration curves and estimates radiation dose. Images of metaphase cells from samples, exposed at 1.4-3.4 Gy, that had been manually scored by two reference laboratories were reanalyzed with ADCI. This resulted in estimated exposures within 0.4-1.1 Gy of the physical dose. Therefore, ADCI can determine radiation dose with accuracies comparable to standard triage biodosimetry. Calibration curves were generated from metaphase images in ~10 h, and dose estimations required ~0.8 h per 500 image sample. Running multiple instances of ADCI may be an effective response to a mass casualty radiation event. CI - (c) The Author 2016. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com. FAU - Rogan, Peter K AU - Rogan PK AD - Department of Biochemistry, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada progan@uwo.ca. AD - Cytognomix Inc., 60 North Centre Rd., Box 27052, London, Ontario N5X 3X5, Canada. FAU - Li, Yanxin AU - Li Y AD - Department of Biochemistry, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada. FAU - Wilkins, Ruth C AU - Wilkins RC AD - Consumer and Clinical Radiation Protection Bureau, Health Canada, 775 Brookfield Rd., K1A 1C1, Ottawa, Ontario, Canada. FAU - Flegal, Farrah N AU - Flegal FN AD - Canadian Nuclear Laboratories, Radiobiology & Health, Plant Road, Chalk River, Ontario, K0J 1J0, Canada. FAU - Knoll, Joan H M AU - Knoll JH AD - Cytognomix Inc., 60 North Centre Rd., Box 27052, London, Ontario N5X 3X5, Canada. AD - Department of Pathology and Laboratory Medicine, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada. LA - eng PT - Journal Article DEP - 20160713 PL - England TA - Radiat Prot Dosimetry JT - Radiation protection dosimetry JID - 8109958 SB - IM MH - Biological Assay/*methods MH - Chromosome Aberrations/*radiation effects MH - Equipment Design MH - Equipment Failure Analysis MH - Flow Cytometry/instrumentation/methods MH - Humans MH - Image Interpretation, Computer-Assisted/*methods MH - Pattern Recognition, Automated/methods MH - Radiation Dosage MH - Radiometry/*methods MH - Robotics/*methods MH - *Software MH - Specimen Handling/methods MH - *User-Computer Interface EDAT- 2016/07/15 06:00 MHDA- 2018/02/08 06:00 CRDT- 2016/07/15 06:00 PHST- 2016/07/15 06:00 [pubmed] PHST- 2018/02/08 06:00 [medline] PHST- 2016/07/15 06:00 [entrez] AID - ncw161 [pii] AID - 10.1093/rpd/ncw161 [doi] PST - ppublish SO - Radiat Prot Dosimetry. 2016 Dec;172(1-3):207-217. doi: 10.1093/rpd/ncw161. Epub 2016 Jul 13.