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2. Image reject analysis and rejection causes in digital radiography at a university hospital through estimates of patient doses.

Author

Calatayud-Jordán, José, Campayo-Esteban, Juan Manuel, Gras-Miralles, Pilar, and Villaescusa-Blanca, Juan Ignacio

Subjects
UNIVERSITY hospitals, IMAGE analysis, RADIOGRAPHY, PICTURE archiving & communication systems, QUALITY assurance, ADULTS
Abstract

The introduction of digital radiography has improved image acquisition. However, rejection of images remains a matter of concern. Reject analysis is part of the quality assurance program in radiology and helps identify potential errors or lack of training. A retrospective study was conducted at the radiology department of a university hospital. The reject rate was calculated both using the number of examinations, |$r_n$|⁠ , and the dose-area product, |$r_d$|⁠. A reject rate |$r_n$| of 3.3% for paediatric units and 4.5% for adults was found. The corresponding values of rd were 4.4 and 8.4%, respectively. The main rejection cause was patient motion, being 50.2% of rejected examinations in adults and 63.7% in children. The contribution of exposure errors was minor, as expected in digital radiography units. A discrepancy between reject rates |$r_n$| and |$r_d$| was observed, suggesting dosimetric quantities could be considered in reject analysis for further assessment of patient radiation burden. [ABSTRACT FROM AUTHOR]

Published
2024
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3. Analysis of the Possible Persistent Genotoxic Damage in Workers Linked to the Ardystil Syndrome

Author

Universitat Politècnica de València. Departamento de Ingeniería Química y Nuclear - Departament d'Enginyeria Química i Nuclear, Universitat Politècnica de València. Instituto de Seguridad Industrial, Radiofísica y Medioambiental - Institut de Seguretat Industrial, Radiofísica i Mediambiental, Hospital Universitari i Politècnic La Fe, Generalitat Valenciana, Montoro Pastor, Alegría, Sebastià, N., Hervás, D., Esteban, V., Bonafont, J., Barquinero, J.F., Almonacid, M., Cervera, J., Such, E., Verdú Martín, Gumersindo Jesús, Soriano, J.M., Villaescusa Blanca, Juan Ignacio, Universitat Politècnica de València. Departamento de Ingeniería Química y Nuclear - Departament d'Enginyeria Química i Nuclear, Universitat Politècnica de València. Instituto de Seguridad Industrial, Radiofísica y Medioambiental - Institut de Seguretat Industrial, Radiofísica i Mediambiental, Hospital Universitari i Politècnic La Fe, Generalitat Valenciana, Montoro Pastor, Alegría, Sebastià, N., Hervás, D., Esteban, V., Bonafont, J., Barquinero, J.F., Almonacid, M., Cervera, J., Such, E., Verdú Martín, Gumersindo Jesús, Soriano, J.M., and Villaescusa Blanca, Juan Ignacio

Abstract

[EN] Background: A combination of several factors including a change in the paint application system; a lack of proper hygiene; and inadequate safety measures caused a severe health impact in the workers of some textile painting factories. This outbreak, mainly characterized by respiratory disorders, caused the death of six people and it has been classified as Ardystil syndrome. Materials and Methods: Fifty-two workers involved in the outbreak and 48 healthy subjects not known to have exposed to the potentially mutagenic agents participated in the study. The program evaluated possible genotoxic damage through the sister chromatid exchange (SCE) cytogenetic biomarker assay. We determined the frequency of SCE, high-frequency cells (HFCs), and a ratio, which can be considered as a new parameter, allowing for the study of the SCE distribution pattern among the chromosomes. Results: There was no statistically significant difference in the SCE frequency and in the mean number of HFCs between the control and the Ardystil-affected groups. However, smoking increased the incidence of all parameters studied in both the case and control groups. Conclusions: This study shows that workers involved in the Ardystil syndrome did not suffer genotoxic damage as measured by SCE and HFCs when compared with the control group.

Published
2016

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