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- Evaluation of the patient exposure dose during ERCP Fluoroscopy guided proceduresPublication . Granadas, Marisa; Rodrigues, Sónia; Sousa, Patrick; Lesyuk, Oksana; Vicente, Bianca; Almeida, Rui; Azevedo, Kevin; Ribeiro, Luís; Abrantes, AntónioEndoscopic retrograde cholangiopancreatography (ERCP) is a diagnostic/therapeutic fluoroscopy guided procedure that includes upper gastrointestinal endoscopy allowing the treatment of the bile and pancreatic ducts pathologies. Currently, ERCP is mostly used in therapy, which turns in to longer procedures, with potential higher doses of ionizing radiation to the patient and due to the cancer development risk it's relevant to evaluate dose exposure during ERCP. The International Atomic Energy Agency (IAEA) defined the mean dose area product (DAP) for ERCP diagnostic procedures as 15 Gy.cm2 and mean...
- Effectiveness of shielding in computed tomography examinationsPublication . Coelho, Soraia; Azevedo, Kevin; Abrantes, António; Rodrigues, Sónia; Ribeiro, Luís; Vicente, Bianca; Almeida, Rui; Lesyuk, OksanaComputed Tomography (CT) is an important tool in providing high-quality crosssectional images of the body using ionizing radiation and computational reconstruction techniques. CT has transformed much of medical imaging by providing three-dimensional views of the organ or body region of interest. CT involves larger radiation doses than the more common, conventional x-ray imaging procedures, and technological developments have contributed to the increase of number and diversity of scanning procedures, in adults and pediatrics patients. Since an increasing number of CT scans are being obtained, the...
- Assessment of scatter radiation in the shielding of radiography proceduresPublication . Duarte, Maria; Rodrigues, Sónia; Ribeiro, Luís; Abrantes, António; Almeida, Rui; Azevedo, Kevin; Ribeiro, AnabelaScattered radiation is the largest contributor to patient dose and the main cause for stochastic effects (1-3). Evaluate the use of radiological protections and attenuating materials depending on the scattered radiation which the patient is subject, analyzing the appropriate placement of the protections is extremely important for the improvement of the radiographer clinical practice (4-7). Therefore, the purpose of this research is to ascertain the best way to protect irradiated patients, particularly children and pregnant women.
- Residual activity in a Nuclear Medicine Department: a dosimetric studyPublication . Queirós, André; Abrantes, António; Rodrigues, Sónia; Ribeiro, Luís; Azevedo, Kevin; Almeida, Rui; Pinheiro, JoãoThe exposure to ionizing radiation by radiographer in Nuclear Medicine (NM) Departments is inevitable, as this area has the highest rates of residual activity. Since 1957, and later updated (2005), several guidelines have been established by the IAEA (International Atomic Energy Agency), for the management of residues from radioactive use for medical purposes, with the intention of increasing the radiological protection of the people and the environment. Optimized management is very important not only for the functioning of the NM department, but also for the...
- Implementing dose management systems in Radiology Departments: pros and consPublication . Vicente, Bianca; Almeida, Rui; Abrantes, António; da Silva, CarlosThe increasing use of radiodiagnostic modalities has led to an increased focus and awareness on patient safety and consequent search for optimization of radiographer’s practices 1. The Basic Safety and Standards Directive (BSSD), 2013/59/Euratom lays down standards for protection against the dangers arising from exposure to ionizing radiation2. This Directive was adopted by the Council of the European Union in 2013 and there was a requirement for transposition and implementation into national legislation in EU member state by February 2018. One of the key points...