Artefacts due to static electricity in a dental school

Autor:	I P Sewerin
Rok vydání:	1995
Předmět:	medicine.medical_specialty business.industry X-Ray Film Static Electricity Air humidity Reproducibility of Results General Medicine Surgery Otorhinolaryngology Radiography Dental Schools Dental Medicine Optometry Radiology Nuclear Medicine and imaging Artifacts business General Dentistry
Zdroj:	Dentomaxillofacial Radiology. 24:132-134
ISSN:	1476-542X 0250-832X
DOI:	10.1259/dmfr.24.2.9515385
Popis:	The diagnostic usefulness of radiographs is diminished by errors of film handling, and retakes mean increased radiation doses. Avoiding artefacts due to static electricity is part of a quality assurance programme. The number of types of artefacts originating from static electricity in the Department of Radiology, School of Dentistry, Copenhagen, were recorded over a five-week period with low temperatures and low air humidity. During the period 3137 intra-oral and 638 extra-oral films were processed by seven assistants and a number of trainees. A total of 48 artefacts on 47 extra-oral films was observed. The artefacts were classified into four types. Only one case of classical 'lightning' was found, while nine were of a hitherto undescribed type ('animals' or 'cactus flowers'). The most common type appeared as dots arranged in straight lines; their origin was obscure, but it was suspected that they were caused by the processing machine. The one typical 'lightning' case occurred on a Status-X film, consistent with the theory that friction may be a causative factor. Although individual frequencies varied, all the radiography assistants and trainees were associated with the artefacts recorded.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eaebbfd00f8b05ec1f6f19ec5548489d https://doi.org/10.1259/dmfr.24.2.9515385 Zobrazit plný text záznamu Plný text