title: Electronic collimation and radiation protection in paediatric digital radiography: revival of the silver lining.
abstract: In digital radiography we are now able to electronically collimate images after acquisition. This may seem convenient in paediatric imaging, but we have to be aware that electronic collimation has two major downsides. Electronic collimation implicates that the original field size should have been smaller and the child has been exposed to unnecessary radiation. Also, by use of electronic collimation, potentially important information may be lost. The "silver lining", denoting the X-ray beam collimation, can serve as a useful radiation protection instrument to check for proper field size and detect unnecessary exposure. Furthermore, the silver lining confirms all exposed anatomy is shown in the final image, and thus may also serve as a quality assurance instrument as the patient has the right to all acquired information. Teaching Points • The ability to electronically collimate an image after acquisition may serve to enhance contrast in the region of interest. • The ability to electronically collimate an image after acquisition carries the risk of overexposure. • The ability to electronically collimate an image after acquisition carries the risk of losing important information. • The silver lining can serve as a quality control instrument for proper collimation. • The patient has the right to all information obtained during an X-ray examination.
authors: Radiology Department, Haga Teaching Hospital/Juliana Children's Hospital, Leyweg 275, 2545 CH, Den Haag, The Netherlands, j.bomer@hagaziekenhuis.nl.
authors: J
authors: J
authors: Bomer
authors: L
authors: L
authors: Wiersma-Deijl
authors: H C
authors: HC
authors: Holscher
references: Radiol Technol. 2012 Sep-Oct;84(1):83-9
references: 22988267
references: Eur J Radiol. 2009 Nov;72(2):266-73
references: 19345030
references: Pediatr Radiol. 2011 May;41(5):611-9
references: 21491201
references: AJR Am J Roentgenol. 2001 Feb;176(2):289-96
references: 11159059
references: Pediatr Radiol. 2011 May;41(5):602-10
references: 21491200
references: Pediatr Radiol. 2011 May;41(5):567-72
references: 21491196
references: Insights Imaging. 2011 Aug;2(4):357-362
references: 22358387