ABDOMEN-PELVIS COMPUTED TOMOGRAPHY PROTOCOL OPTIMIZATION: AN IMAGE QUALITY and DOSE ASSESSMENT
| Autor: | Patrícia Nicolucci, Seizo Yamashita, Nadine Helena Pelegrino Bastos Maués, Allan Felipe Fattori Alves, Diana Rodrigues de Pina, André Petean Trindade, Ana Luiza Menegatti Pavan, Yvone Maria Mascarenhas, Sergio Marrone Ribeiro |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Sapra Landauer, Universidade de São Paulo (USP) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Adult
Male Radiography Abdominal Image quality Radiography BIOFÍSICA Computed tomography Image processing Radiation Dosage Effective dose (radiation) Imaging phantom 030218 nuclear medicine & medical imaging Pelvis 03 medical and health sciences 0302 clinical medicine Image Processing Computer-Assisted Medicine Humans Radiology Nuclear Medicine and imaging Image resolution Retrospective Studies Radiation Radiological and Ultrasound Technology medicine.diagnostic_test business.industry Phantoms Imaging Public Health Environmental and Occupational Health General Medicine 030220 oncology & carcinogenesis Tomography business Nuclear medicine Tomography X-Ray Computed |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | Made available in DSpace on 2019-10-06T16:42:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-07-01 Computed tomography (CT) has a high level of sensitivity and specificity for the diagnosis and follow-up of pathologies of the abdomen-pelvis region. Some features, such as automatic tube current modulation (ATCM), permits the acquisition of quality images with low radiation doses. This study evaluated the image quality and radiation dose of abdomen-pelvis CT protocols with ATCM technique. Were performed five CT protocols using 16-slice and 64-slice scanners, an anthropomorphic phantom for dosimetric measurements, an analytical phantom and retrospective examinations for image quality analysis. Were found significant reduction in effective dose. The highest absorbed doses were found in the stomach and spleen (56.1 and 47.2 mGy, respectively). Objective parameters as noise, low contrast and spatial resolution did not significantly differ between the protocols (p > 0.05). All protocols received the range of 'Optimum/Acceptable' in patient's image quality analysis. This methodology can be reproduced in any clinical routine to optimize CT protocols. São Paulo State University (UNESP) Instituto de Biociências de Botucatu Departamento de Física e Biofísica São Paulo State University (UNESP) Faculdade de Medicina de Botucatu Departamento de Doenças Tropicais e Diagnóstico Por Imagem Sapra Landauer, Rua Cid Silva César, 600 Universidade de São Paulo (USP) Faculdade de Filosofia Ciências e Letras de Ribeirão Preto Centro de Instrumentação Dosimetria e Radioproteção (CIDRA), Av. Bandeirantes, 3900 Bairro Monte Alegre São Paulo State University (UNESP) Instituto de Biociências de Botucatu Departamento de Física e Biofísica São Paulo State University (UNESP) Faculdade de Medicina de Botucatu Departamento de Doenças Tropicais e Diagnóstico Por Imagem |
| Databáze: | OpenAIRE |
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