Abstract
Objective
To evaluate the dose of scatter radiation to infants in a NICU in order to determine the minimal safe distance between isolettes.
Materials and methods
Dose secondary to scattered radiation from an acrylic phantom exposed to vertical and horizontal beam exposures at 56 kVp was measured at 93 cm and 125 cm from the center of the phantom. This corresponds to 2 and 3 ft between standard isolettes, respectively. For horizontal exposures, the dosimeter was placed directly behind a CR plate and scatter dose at 90-degrees and 135-degrees from the incident beam was also measured. Exposures were obtained at 160 mAs and the results were extrapolated to correspond to 2.5 mAs. Four measurements were taken at each point and averaged.
Results
At 125 cm and 93 cm there was minimal scatter compared to daily natural background radiation dose (8.493 μGy). Greatest scatter dose obtained from a horizontal beam exposure at 135° from the incident beam was still far below background radiation.
Conclusion
Scatter radiation dose from a single exposure as well as cumulative scatter dose from numerous exposures is significantly below natural background radiation. Infants in neighboring isolettes are not at added risk from radiation scatter as long as the isolettes are separated by at least 2 ft.
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References
Fazel R, Krumholz HM, Wang Y (2009) Exposure to low-dose ionizing radiation from medical imaging procedures. N Eng J Med 361:849–857
Willis CE, Slovis TL (2005) The ALARA concept in pediatric CR and DR: dose reduction in pediatric radiographic exams—a white paper conference executive summary. Radiology 234:343–344
Goske MJ, Applegate KE, Boylan J et al (2008) The image gently campaign: working together to change practice. Am J of Roentgenol 190:273–274
American Academy of Pediatrics and American College of Obstetrics and Gynecology (2007) Guidelines of Perinatal Care, 6th edn. ACOG, Atlanta
Bader D, Datz H, Bartal G et al (2006) Unintentional exposure of neonates to conventional radiography in the neonatal intensive care units. J Perinato 27:579–585
Medical physics data book (1982) In: Padikal TN (ed) National bureau of standards handbook series number 138. US government publishing office, Washington DC
Ionizing Radiation Exposure of the Population of the United States (2009). In: NCRP Report No. 160. National council on radiation protection and measurements, Washington DC www.ncrppublications.org
Poznanski AK, Kanellitsas C, Roloff DW et al (1974) Radiation exposure to personnel in a neonatal nursery. Pediatrics 54:139–141
Cupitt JM, Vinavagam S, McConachie I (2001) Radiation exposure of nurses on an intensive care unit. Anaesthesia 56:183
Sabau MN, Radkowski MA, Vyborny CJ (1985) Radiation exposure due to scatter in neonatal radiographic procedures. Am J of Roentgenol 144:811–814
Radiation Protection in Pediatric Radiology (1981). In: NCRP Report No. 68. National council on radiation protection and measurements, Washington DC. www.ncrppublications.org
Olgar T, Onal E, Bor D et al (2008) Radiation exposure to premature infants in a neonatal intensive care unit in Turkey. Korean J Radiol 9:416–419
Duetting T, Foerste B, Knoch T et al (1999) Radiation exposure during chest X-ray examinations in a premature intensive care unit: phantom studies. Pediatr Radiol 29:158–162
Burrage JW, Rampant PL, Beeson BP (2003) Scatter and transmission doses from several pediatric X-ray examinations in a nursery. Pediatr Radiol 33:704–708
Donadieu J, Zeghnoun A, Roudier C et al (2006) Cumulative effective dose delivered by radiographs to preterm infants in a neonatal intensive care unit. Pediatrics 117:882–888
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Trinh, A.M., Schoenfeld, A.H. & Levin, T.L. Scatter radiation from chest radiographs: is there a risk to infants in a typical NICU?. Pediatr Radiol 40, 704–707 (2010). https://doi.org/10.1007/s00247-009-1474-4
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DOI: https://doi.org/10.1007/s00247-009-1474-4