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![??? NewImg[1]/Alt ???](./054_files/higlight-december-2013.jpg) |
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Dear MDCT.net users,
This month’s newsletter is the first of a new series focusing on strategies for radiation
dose reduction in different body regions, starting with the brain, head and neck.
One of the main concerns associated with MDCT is the exposure to ionizing radiation, which
may compromise the safety of patients undergoing these examinations. Simply reducing the radiation
dose by lowering the X-ray tube current and voltage is not recommended due to the concomitant loss
in image quality. Several dose-reduction techniques have been developed specifically for head CT,
ranging from automated tube current modulation to lowering the tube potential and using
noise-reduction filters. The objective of each strategy is to find the right balance between the
high diagnostic benefit of MDCT and patients' safety, without sacrificing image quality.
The contributions presented here address this important topic by providing an overview of
recent technical and practical points of view from the scientific literature. In particular, we
highlight two research papers that described innovative dose-reduction strategies for head and neck
CT, and provide links to the full text of relevant book chapters, other recent articles and content
from the MDCT.net archive.
As 2013 comes to a close, we thank you for your continuing interest in MDCT.net and send our
very best wishes for the new year.
From the MDCT.net team
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Strategies for radiation dose reduction in head and neck CT
V. Matarese
Two newly published research papers illustrate how innovative strategies can be applied to
brain CT and supraaortic CT angiography to bring the effective dose near to, or below, the
milliSievert level.
view »
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• Ardley ND, Lau KK,
Buchan K.
Radiation dose reduction using a neck detection algorithm for single spiral
brain and cervical spine CT acquisition in the trauma setting.
Emerg Radiol. 2013 Dec;20(6):493-497
• Wu TH, Hung SC, Sun JY
et al.
How far can the radiation dose be lowered in head CT with iterative
reconstruction? Analysis of imaging quality and diagnostic accuracy.
Eur Radiol. 2013 Sep; 23(9):2612-2621
• Korn A, Fenchel M,
Bender B et al.
High-pitch dual-source CT angiography of supra-aortic arteries: assessment of
image quality and radiation dose.
Neuroradiology. 2013 Mar;55(4):423-430
• Ramgren B,
Björkman-Burtscher IM, Holtås S, Siemund R.
CT angiography of intracranial arterial vessels: impact of tube voltage and
contrast media concentration on image quality.
Acta Radiol. 2012 Oct 1;53(8):929-34
• Wong ST, Yiu G, Poon YM
et al.
Reducing radiation exposure from computed tomography of the brain in
children--report of a practical approach.
Childs Nerv Syst. 2012 May;28(5):681-689
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Radiation Dose from Multidetector CT
Tack Denis; Kalra, Mannudeep K.; Gevenois, Pierre Alain (Eds.)
Springer 2012
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• Table of
Contents
• Dose Optimization and
Reduction in CT of the Brain and Head and Neck Region
view »
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Multislice CT
MF Reiser, CR Becker, K Nikolaou, G Glazer (Eds.) - Springer 2009
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• Table of
Contents
• MDCT in Neuro-Vascular
Imaging
view »
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FROM THE MDCT.net ARCHIVE
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Technical Considerations
Use of high-iodine-concentration contrast medium can overcome increased noise
during low-radiation MDCT angiography
V Matarese
view »
MDCT radiation dose in children is further reduced by appropriate timing in
the use of breast shields
C Catalano
view »
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Optimizing image quality of cerebrovascular CT angiography
V Matarese
view »
Putting theory into practice: hands-on training in dose reduction for
radiology departments
V Matarese
view »
Radiation dose from Adult and Pediatric Multidetector Computed
Tomography
Book Review by JF Paul
view »
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How to balance radiation dose and diagnostic yield
HC Becker
From: ECR 2013, MDCT Symposium, Vienna, March 9th, 2013
view »
How to marry scanner and contrast variables to maximize radiation dose
reduction
M Prokop
From: ECR 2012, MDCT Symposium, Vienna, Austria 2nd March
2012
view »
High Concentration Contrast Media and Radiation Dose Reduction "Introduction and Technology
Overview"
C Loewe
From: ECR 2011, MDCT Symposium, Vienna, Austria 3-7 March
2011
view »
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Dose reduction strategies in contrast-enhanced CT
Module 1: Principles of radiation dose reduction in CT
A Vanzulli
view »
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MDCT.net's Guide to Technology and Protocols – Radiation Dose
view »
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