doi: 10.3174/ajnr.A0814
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
American Journal of Neuroradiology 28:1628-1632, October 2007
© 2007 American Society of Neuroradiology
Physics Review
Radiation Dose-Reduction Strategies for Neuroradiology CT Protocols
a From the Department of Radiology, Neuroradiology Section, University of California, San Francisco, Calif
Please address correspondence to Max Wintermark, MD, Department of Radiology, Neuroradiology Section, University of California, San Francisco, 505 Parnassus Ave, Box 0628, San Francisco, CA 94143-0628; e-mail: Max.Wintermark{at}radiology.ucsf.edu
SUMMARY: Within the past 2 decades, the number of CT examinations performed has increased almost 10-fold. This is in large part due to advances in multidetector-row CT technology, which now allows faster image acquisition and improved isotropic imaging. The increased use, along with multidetector technique, has led to a significantly increased radiation dose to the patient from CT studies. This places increased responsibility on the radiologist to ensure that CT examinations are indicated and that the "as low as reasonably achievable" concept is adhered to. Neuroradiologists are familiar with factors that affect patient dose such as pitch, milliamperes, kilovolt peak (kVp), collimation, but with increasing attention being given to dose reduction, they are looking for additional ways to further reduce the radiation associated with their CT protocols. In response to increasing concern, CT manufacturers have developed dose-reduction tools, such as dose modulation, in which the tube current is adjusted along with the CT acquisition, according to patient's attenuation. This review will describe the available techniques for reducing dose associated with neuroradiologic CT imaging protocols.
This article has been cited by other articles:
 |
|
 |
|
  M. Wintermark and M.H. Lev FDA Investigates the Safety of Brain Perfusion CT AJNR Am. J. Neuroradiol., January 1, 2010; 31(1): 2 - 3. [Full Text] [PDF]
|
|
|
|
|
|
J.J. Kim, W.P. Dillon, C.M. Glastonbury, J.M. Provenzale, and M. Wintermark Sixty-Four-Section Multidetector CT Angiography of Carotid Arteries: A Systematic Analysis of Image Quality and Artifacts AJNR Am. J. Neuroradiol., January 1, 2010; 31(1): 91 - 99. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
E.J. Lee, S.K. Lee, R. Agid, P. Howard, J.M. Bae, and K. terBrugge Comparison of Image Quality and Radiation Dose between Fixed Tube Current and Combined Automatic Tube Current Modulation in Craniocervical CT Angiography AJNR Am. J. Neuroradiol., October 1, 2009; 30(9): 1754 - 1759. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A.A. Konstas, G.V. Goldmakher, T.-Y. Lee, and M.H. Lev Theoretic Basis and Technical Implementations of CT Perfusion in Acute Ischemic Stroke, Part 2: Technical Implementations AJNR Am. J. Neuroradiol., May 1, 2009; 30(5): 885 - 892. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C.B. Nauer, A. Eichenberger, P. Dubach, J. Gralla, and M. Caversaccio CT Radiation Dose for Computer-Assisted Endoscopic Sinus Surgery: Dose Survey and Determination of Dose-Reduction Limits AJNR Am. J. Neuroradiol., March 1, 2009; 30(3): 617 - 622. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 E. M. de Lucas, E. Sanchez, A. Gutierrez, A. G. Mandly, E. Ruiz, A. F. Florez, J. Izquierdo, J. Arnaiz, T. Piedra, N. Valle, et al. CT Protocol for Acute Stroke: Tips and Tricks for General Radiologists1 RadioGraphics, October 1, 2008; 28(6): 1673 - 1687. [Abstract] [Full Text] [PDF]
|
|