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Congress: ECR25
Poster Number: ESI-25394
Type: EuroSafe Imaging Poster
Authorblock: J. S. D. M. Tapajos, L. L. Tapajos, L. Cavalcante, V. Guttemberg; Manaus/BR
Disclosures:
Juliana Santana De Melo Tapajos: Nothing to disclose
Luciano Leitao Tapajos: Nothing to disclose
Leonardo Cavalcante: Nothing to disclose
Victor Guttemberg: Nothing to disclose
Keywords: Radioprotection / Radiation dose, CT, Physics, Radiation safety, Dosimetric comparison, Quality assurance
Purpose or learning objective The two general principles of radiological protection, applicable to the exposure of patients undergoing medical radiological procedures, are  justification and optimization. Justification of medical exposure involves weighing the diagnostic or therapeutic benefits of exposure against the potential for harm, taking into account the benefits and risks of available alternative techniques that do not involve exposure to ionizing radiation, while optimization involves maintaining exposure of patients to the minimum necessary to achieve the diagnostic or interventional objective. Dose limits do not...
Read more Methods or background This study was carried out in a private hospital in the metropolitan region of Manaus, with prospective data from 525 CT scans, 175 of which were of the head with an indication for headache, 175 of the abdomen with an indication for abdominal pain and 175 of the chest with an indication for pneumonia. The following data was collected: patient age, gender, weight, height and body mass index, clinical indication, CT scanner model, irradiation parameters (kVp, mA, pitch) and dose...
Read more Results or findings 525 patients were evaluated, with a mean age of 40.2±13.1 years (range 18 to 95 years), most frequently female (55.4%) and overweight (41.5%).The distribution of patients according to anatomical site/clinical indication was equally 175 individuals (33.3%) for the abdomen, head and chest. Patients undergoing chest CT were older than those undergoing head CT (P<0.001). The height of patients undergoing abdominal CT was greater than the height of patients undergoing head CT (P=0.011). Women more frequently underwent head CT, while men...
Read more Conclusion Typical values in terms of CTDIvol and DLP were established for head tomography exams with clinical indications of headache, abdominal tomography with clinical indication of abdominal pain and chest tomography with clinical indication of pneumonia, these exams being more frequent in the population served by the hospital and which can contribute to optimizing doses. These values were lower than those in the USA and Brazil and equivalent to most Europeans. Continued efforts to refine CT protocols and implement dose reduction...
Read more References Bonn call for Action: 10 Actions to Improve Radiation Protection in Medicine in the Next Decade. Disponível em: <https://www.who.int/publications/m/item/bonn-call-for-action>. Acesso em: 14 dez. 2022. Diagnostic reference levels in medical imaging: review and additional advice. Annals of the ICRP, v. 31, n. 4, p. 33–52, 2001. EUROPEAN COMMISSION. European guidelines on quality criteria for diagnostic radiographic images: Eur 16260 EN. [s.l.] European Commission, 1996. INTERNATIONAL ATOMIC ENERGY AGENCY. Radiation protection and safety of radiation sources: international basic safety standards. Vienna: Iaea, 2014. KANAL, K. M....
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