Iterative Reconstruction Algorithm for Abdominal Multidetector CT at Different Tube Voltages: Assessment of Diagnostic Accuracy, Image Quality, and Radiation Dose in a Phantom Study
Sebastian T. Schindera,Lars Diedrichsen,Hubert C Müller,Oliver Rusch,Daniele Marin,Bernhard Schmidt,Rainer Raupach,Peter Vock,Zsolt Szucs-Farkas +8 more
TLDR
Results of this phantom study suggest that a 100-KVp abdominal CT protocol with an iterative reconstruction algorithm for simulated intermediate-sized patients increases the image quality and maintains the diagnostic accuracy at a reduced radiation dose when compared with a 120-kVp Protocol with an FBP algorithm.Abstract:
Lower radiation dose and comparable sensitivity for tumor detection at abdominal CT are possible with 100 kVp with the iterative reconstruction algorithm versus 120 kVp with the filtered back projection algorithm.read more
Citations
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Journal ArticleDOI
Iterative reconstruction techniques for computed tomography Part 1: technical principles.
Martin J. Willemink,Pim A. de Jong,Tim Leiner,Linda M. de Heer,Rutger A.J. Nievelstein,Ricardo P. J. Budde,Arnold M. R. Schilham +6 more
TL;DR: Iterative reconstruction technology for CT is presented in non-mathematical terms and IR can improve image quality in routine-dose CT and lower the radiation dose, and IR's disadvantages include longer computation and blotchy appearance of some images.
Journal ArticleDOI
Iterative reconstruction techniques for computed tomography part 2: initial results in dose reduction and image quality
Martin J. Willemink,Tim Leiner,Pim A. de Jong,Linda M. de Heer,Rutger A.J. Nievelstein,Arnold M. R. Schilham,Ricardo P. J. Budde +6 more
TL;DR: Benefits of IR include improved subjective and objective image quality as well as radiation dose reduction while preserving image quality and future studies need to address the value of IR in ultra-low-dose CT with clinically relevant endpoints.
Journal ArticleDOI
Reducing the Radiation Dose for CT Colonography Using Adaptive Statistical Iterative Reconstruction: A Pilot Study
TL;DR: The results of this pilot study show that the radiation dose during CTC can be reduced 50% below currently accepted low-dose techniques without significantly affecting image quality when ASIR is used.
Journal ArticleDOI
Radiation dose reduction with Sinogram Affirmed Iterative Reconstruction technique for abdominal computed tomography.
Mannudeep K. Kalra,Mischa Woisetschläger,Nils Dahlström,Sarabjeet Singh,Maria Lindblom,Garry Choy,Petter Quick,Bernhard Schmidt,Martin Sedlmair,Michael A. Blake,Anders Persson +10 more
TL;DR: Assessment of Sinogram Affirmed Iterative Reconstruction and filtered back-projection techniques on abdominal computed tomography performed with 50% and 75% radiation dose reductions found they provided abdominal CT images without loss in diagnostic value at 50% reduced dose and in some patients also at 75% reduction dose.
Journal ArticleDOI
Contrast-to-Noise Ratio and Low-Contrast Object Resolution on Full- and Low-Dose MDCT: SAFIRE Versus Filtered Back Projection in a Low-Contrast Object Phantom and in the Liver
Mark E. Baker,Frank Dong,Andrew N. Primak,Nancy A. Obuchowski,David M. Einstein,Namita S. Gandhi,Brian R. Herts,Andrei S. Purysko,Erick M. Remer,Neil Vachani +9 more
TL;DR: The ability of SAFIRE to improve low-contrast object detection and conspicuity depends on the radiation dose level, and lower dose scans reconstructed with SAFIRE have a higher CNR.
References
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TL;DR: These detailed estimates highlight several areas of CT scan use that make large contributions to the total cancer risk, including several scan types and age groups with a high frequency of use or scans involving relatively high doses, in which risk-reduction efforts may be warranted.
Journal ArticleDOI
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Amy K. Hara,Robert G. Paden,Alvin C. Silva,Jennifer L. Kujak,Holly J. Lawder,William Pavlicek +5 more
TL;DR: These preliminary results support body CT dose index reductions of 32-65% when adaptive statistical iterative reconstruction is used and suggest that studies with larger statistical samples are needed to confirm these findings.