Wójcik Anna,KurzepaJoanna,SamekIlona,JańczykMagdalena,KrawiecPaulina,BiałekJustyna,KoziołMagdalena. The importance of CAD and DECT in CT colonography.Journal of Education, Healthand Sport. 2021;11(9):187-195. eISSN 2391-8306. DOI http://dx.doi.org/10.12775/JEHS.2021.11.09.024 https://apcz.umk.pl/czasopisma/index.php/JEHS/article/view/JEHS.2021.11.09.024 https://zenodo.org/record/5502484 The journal has had 5 points in Ministry of Science and Higher Education parametric evaluation. § 8. 2) and § 12. 1. 2) 22.02.2019. © The Authors 2021; This article is published with open access at Licensee Open Journal Systems of Nicolaus Copernicus University in Torun, Poland Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike. (http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited. The authors declare that there is no conflict of interests regarding the publication of this paper. Received:01.09.2021. Revised: 12.09.2021. Accepted: 13.09.2021. The importance of CAD and DECT in CT colonography Anna Wójcik M.Sc.b, Joanna Kurzepa PhDa, Ilona Samekc, Magdalena Jańczykc, Paulina Krawiecc, Justyna Białekc, Magdalena Koziołc aIst Department of Medical Radiology, Medical University of Lublin, ul. Jaczewskiego 8 20-954 Lublin bScientific Students Association at the Ist Department of Medical Radiology, Medical University of Lublin, ul. Jaczewskiego 8 20-954 Lublin cStudent Scientific Association at Department of Epidemiology and Clinical Research Methodology, Medical University of Lublin, ul. Radziwiłłowska 11, Lublin 20-080, Poland Corresponding author:Anna Wójcik, anna.m.wojcikpl@gmail.com ORCID ID: Anna Wójcik, https://orcid.org/0000-0002-2697-8600, anna.m.wojcikpl@gmail.com Joanna Kurzepa, https://orcid.org/0000-0002-3659-8556,kurzepa.joanna@gmail.com Ilona Samek, https://orcid.org/0000-0002-5538-5396, samekilona@gmail.com Magdalena Jańczyk, https://orcid.org/0000-0002-4948-9463, magdajanczyk7@gmail.com Paulina Krawiec, https://orcid.org/0000-0002-9527-5837, paulina.krawiec96@gmail.com Justyna Białek, https://orcid.org/0000-0002-8447-3395, justynabialek111@gmail.com Magdalena Kozioł, https://orcid.org/0000-0002-8671-5968, magdalena.koziol@icloud.com ABSTRACT Introduction According to the American College of Radiology and the American Cancer Society, CTC has been recognized as a valuable screening method for detecting CRC in people at medium risk as an alternative to endoscopic colonoscopy. The condition for the proper interpretation of this procedure is the patient’s preparation for the examination. The evaluation of the test includes: topogram, transverse images (as reference images), multifaceted reconstructions and three-dimensional images (3D navigator). Materials and methods The literature on the use of CTC in the diagnosis of CRC was analyzed. A review of the scientific literature indexed in the PUBMED database from the last 10 years was carried out. Results The introduction of dual energy computed tomography (DECT) clearly improved the diagnostic accuracy of CTC. The main advantage of DECT is the possibility of obtaining iodine maps and VNC (virtual non-contrast) – a ’’virtual’’ native image (without the use of contrast). DECT allows you to monitor the results and extent of iodine capture on VNC and iodine map images, respectively, without using pre-recorded tomographic images. Pilot tests showed that DECT is an effective tool in CT colonography diagnostics and electronic colon loop cleaning after barium labeling. The use of the Computer Aided Diagnosis (CAD) algorithm in high energy tomography helps in the diagnosis and detection of intestinal tumors. Conclusions The development of modern technologies used in CT colonography proves that it is a safe and acceptable technique for patients. Lack of invasiveness, low radiation dose and high diagnostic efficiency of CTC may encourage more people to undergo colorectal cancer screening in the future. Key words:CT colonography, colorectal cancer, DECT, CAD