Abstract
The purpose of this study was to determine, using an anthropomorphic phantom, whether patients are subject to variable radiation doses based on scanner assignment for routine CT of the brain. Twenty metal oxide semiconductor field effect transistor dosimeters were placed in the brain of a male anthropomorphic phantom scanned three times with a routine clinical brain CT protocol on four scanners from one manufacturer in four configurations and on one 64-MDCT scanner from another manufacturer. Absorbed organ doses were measured for skin, cranium, brain, lens of the eye, mandible, and thyroid. Effective dose was calculated on the basis of the dose-length product recorded on each scanner. Organ dose ranges were as follows: cranium, 2.57-3.47 cGy; brain, 2.34-3.78 cGy; lens, 2.51-5.03 cGy; mandible 0.17-0.48 cGy; and thyroid, 0.03-0.28 cGy. Statistically significant differences between scanners with respect to dose were recorded for brain and lens (p < 0.05). Absorbed doses were lowest on the single-detector scanner. In the comparison of MDCT scanners, the highest doses were found on the 4-MDCT scanner and the dual-source 64-MDCT scanner not capable of gantry tilt. Effective dose ranged from 1.22 to 1.86 mSv. According to the phanto...Continue Reading
References
Jul 1, 1992·Radiology·L J YeomanE J Adam
Jul 1, 1992·Radiology·B J ConwayO H Suleiman
Jan 1, 1991·The British Journal of Radiology·K NishizawaY Furuya
May 29, 1998·European Radiology·T BeaconsfieldA Al-Kutoubi
May 13, 1999·The British Journal of Radiology·A SmithT Kron
Jan 7, 2000·The British Journal of Radiology·M B MatsonS C Rankin
Aug 24, 2000·American Journal of Clinical Oncology·S F Akber
Jan 5, 2001·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·F A MettlerC A Kelsey
Apr 25, 2001·Medical Physics·W HudaW Garrisi
Jun 21, 2001·AJNR. American Journal of Neuroradiology·K D HopperA R Kunselman
Aug 22, 2001·RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin·S M GiacomuzziW Jaschke
Nov 17, 2001·Annals of the ICRP·UNKNOWN Task Group on Control of Radiation Dose in Computed Tomography
Feb 14, 2003·RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin·U WedegärtnerG Adam
Mar 5, 2003·Radiology·Leena M HambergJames H Thrall
Apr 8, 2003·Academic Radiology·Frank J ThomtonRendon C Nelson
Apr 11, 2003·European Radiology·G BrixM Galanski
Nov 18, 2004·The British Journal of Radiology·S F S Halpin
May 18, 2005·Medical Physics·Kostas PerisinakisNicholas Gourtsoyiannis
Apr 11, 2006·European Radiology·J GeleijnsA Calzado Cantera
Aug 11, 2006·Emergency Radiology·Joshua Broder, David M Warshauer
Oct 6, 2006·European Radiology·Michalis MazonakisNicholas Gourtsoyiannis
Oct 24, 2006·AJR. American Journal of Roentgenology·William H MooreRosemarie Olivieri-Fitt
Feb 28, 2007·Radiology·Susanna I LeePeter F Hahn
Mar 31, 2007·Seminars in Radiation Oncology·Michael T MilanoPaul Okunieff
Apr 24, 2007·AJR. American Journal of Roentgenology·Terry T YoshizumiLottie Barnes
May 23, 2007·AJR. American Journal of Roentgenology·Srinivasan MukundanMeredith Moore
Sep 26, 2007·AJNR. American Journal of Neuroradiology·A B SmithM Wintermark
Oct 24, 2007·AJR. American Journal of Roentgenology·Tracy A JaffeDonald P Frush
Mar 29, 2008·Radiology·Alice B SmithMax Wintermark
Oct 16, 2008·AJNR. American Journal of Neuroradiology·J S P TanL-L Chan
Apr 22, 2009·Medical Physics·Di ZhangMichael F McNitt-Gray
Sep 23, 2009·AJR. American Journal of Roentgenology·Tracy A JaffeCarl E Ravin
Citations
Nov 28, 2013·Skeletal Radiology·Paolo SimoniPhilippe Gillet
Mar 7, 2012·Radiological Physics and Technology·Masanao KobayashiKazuhiro Katada
Feb 2, 2012·Investigative Radiology·Hans-Christoph BeckerMaximilian Reiser
Jan 29, 2011·Journal of Medical Case Reports·Yuichiro YoneokaYukihiko Fujii
Nov 7, 2012·Medical Physics·Olav ChristiansonEhsan Samei
Aug 10, 2013·Medical Physics·Claudia C BrunnerKish Chakrabarti
Oct 3, 2014·Neuroradiology·M ErnstM Groth
Oct 29, 2011·AJNR. American Journal of Neuroradiology·A KornH Brodoefel
Oct 24, 2014·BMC Medicine·Hakseung KimDong-Joo Kim
Mar 16, 2013·Journal of the American College of Radiology : JACR·Jenifer R Q W Siegelman, Dustin A Gress
Mar 16, 2013·Insights Into Imaging·Fabio PaolicchiCarlo Bartolozzi
Mar 18, 2016·Journal of Radiation Research·Joanna DomienikJoanna Jurewicz
Dec 30, 2014·AJR. American Journal of Roentgenology·Ulla NikupaavoMika Kortesniemi
Oct 25, 2011·AJR. American Journal of Roentgenology·Jenny K HoangLynne M Hurwitz
Nov 2, 2016·Journal of Neurosurgery·Bledi BrahimajRonald E Warnick
Dec 3, 2016·Emergency Radiology·Supawitoo Sookpeng, Chitsanupong Butdee
Oct 26, 2016·Journal of Computer Assisted Tomography·Juhani TörmänenOsmo Tervonen
May 13, 2017·Radiation Protection Dosimetry·Masoumeh ParsiReza Paydar
May 18, 2012·Journal of Computer Assisted Tomography·Anja Judith ReimannSavvas Nicolaou
Jun 17, 2014·The Journal of Craniofacial Surgery·Kim TsaoDavid Donovan
Dec 22, 2019·Medical Physics·N M ShethJ H Siewerdsen
Jan 25, 2021·BMC Surgery·Vlastimil NovákCsaba Hučko
Jan 30, 2021·Radiation Protection Dosimetry·Silvio TacaraIrene Tomoko Nakano
Aug 24, 2021·Radiation Protection Dosimetry·Mohamed M AbuzaidD A Bradley
Sep 11, 2021·Clinical Neuroradiology·Katja DöringVesna Malinova