title: Dose management in CT facility.
abstract: Computed Tomography (CT) examinations have rapidly increased in number over the last few years due to recent advances such as the spiral, multidetector-row, CT fluoroscopy and Positron Emission Tomography (PET)-CT technology. This has resulted in a large increase in collective radiation dose as reported by many international organisations. It is also stated that frequently, image quality in CT exceeds the level required for confident diagnosis. This inevitably results in patient radiation doses that are higher than actually required, as also stressed by the US Food and Drug Administration (FDA) regarding the CT exposure of paediatric and small adult patients. However, the wide range in exposure parameters reported, as well as the different CT applications reveal the difficulty in standardising CT procedures. The purpose of this paper is to review the basic CT principles, outline the recent technological advances and their impact in patient radiation dose and finally suggest methods of radiation dose optimisation.
authors: Medical Physics Unit, Konstantopoulio Agia Olga Hospital, Athens, Greece.
authors: V
authors: V
authors: Tsapaki
authors: M
authors: M
authors: Rehani
references: Radiology. 2004 Mar;230(3):619-28
references: 14739312
references: Br J Radiol. 2001 Aug;74(884):720-6
references: 11511497
references: Radiology. 2004 Mar;230(3):879-85
references: 14764889
references: Health Phys. 2000 Dec;79(6):675-81
references: 11089804
references: Br J Radiol. 2000 Jan;73(865):43-50
references: 10721319
references: Radiology. 1994 Mar;190(3):683-7
references: 8115611
references: Radiology. 2001 Feb;218(2):395-401
references: 11161152
references: J Nucl Med. 2003 May;44(5):732-8
references: 12732674
references: Radiology. 2006 Sep;240(3):828-34
references: 16837668
references: AJR Am J Roentgenol. 2002 Nov;179(5):1101-6
references: 12388481
references: AJR Am J Roentgenol. 2002 Aug;179(2):461-5
references: 12130452
references: Radiology. 2003 Jul;228(1):257-64
references: 12750460
references: AJR Am J Roentgenol. 2000 Oct;175(4):985-92
references: 11000149
references: Br J Radiol. 1999 Nov;72(863):1073-7
references: 10700824
references: Lancet. 1998 Oct 3;352(9134):1082-3
references: 9798579
references: J Nucl Med. 2005 Apr;46(4):608-13
references: 15809483
references: Br J Radiol. 2001 Sep;74(885):836-40
references: 11560832
references: AJR Am J Roentgenol. 1985 Apr;144(4):805-9
references: 3872042
references: Radiology. 2001 May;219(2):515-20
references: 11323481
references: BMJ. 2000 Mar 4;320(7235):593-4
references: 10698858
references: Lancet. 2004 Jan 31;363(9406):345-51
references: 15070562
references: Rofo. 1996 Nov;165(5):462-5
references: 8998318
references: Radiology. 2004 May;231(2):393-8
references: 15031431
references: Radiology. 2000 Nov;217(2):430-5
references: 11058640
references: Eur Radiol. 2005 Nov;15 Suppl 4:D55-61
references: 16479648
references: Radiology. 2004 Sep;232(3):735-8
references: 15273333
references: Br J Radiol. 2003 Aug;76(908):541-5
references: 12893696
references: Eur Radiol. 2003 Aug;13(8):1979-91
references: 12687286
references: Radiology. 1990 Jun;175(3):729-31
references: 2343122
references: Ann ICRP. 1991;21(1-3):1-201
references: 2053748
references: Invest Radiol. 2001 Oct;36(10):604-11
references: 11577271
references: Eur Radiol. 1998;8(4):664-7
references: 9569344
references: Eur Radiol. 2002 Apr;12(4):745-52
references: 11960221
references: Can Assoc Radiol J. 2006 Jun;57(3):152-8
references: 16881472
references: J Radiol Prot. 2000 Dec;20(4):353-9
references: 11140709
references: Nucl Med Commun. 2005 Apr;26(4):323-30
references: 15753791
references: J Thorac Imaging. 2001 Apr;16(2):81-8
references: 11292209
references: Br J Radiol. 1998 Jun;71(846):584-6
references: 9849379
references: Pediatr Radiol. 2002 Apr;32(4):261-7
references: 11956707
references: Radiat Prot Dosimetry. 2003;104(1):47-53
references: 12862243
references: Invest Radiol. 1998 Feb;33(2):68-73
references: 9493720
references: Radiat Prot Dosimetry. 2002;98(4):437-40
references: 12120672
references: Radiology. 2000 Jul;216(1):180-4
references: 10887246
references: Eur Radiol. 2000;10(2):391-4
references: 10663775
references: Ann ICRP. 2000;30(4):7-45
references: 11711158
references: Health Phys. 2003 Aug;85(2):165-73
references: 12938963
references: Can Assoc Radiol J. 2006 Apr;57(2):79-85
references: 16944681