Practical Resources for Computed Tomography

Practical Resources for Computed Tomography

Find a variety of materials for further reading.

Link: Right Dose Image Contest 2013
The Best CT Images 2013

Articles: SOMATOM Sessions Online - Answers for life in Computed Tomography

Browse through the low dose category in the SOMATOM Sessions Online and find articles, news and case studies.

How to reduce dose in Pediatric CT imaging

As children are more sensitive to radiation than adults, it is of utmost importance to pay attention when imaging pediatric patients. This flyer includes tips and tricks guiding from patient preparation to protocol selection and the application of features such as CARE Dose4D.
This flyer applies to software versions syngo CT 2010 and earlier.


How to reduce dose in Cardio CT - SOMATOM Definition AS Family, syngo CT 2011A


The scanners of the SOMATOM Definition AS Family offer various scan modes to match the clinical requirements for different clinical situations in Cardio CT.
The flyer includes information about the appropriate scan mode and advice as to how reconstruction parameters should be chosen.


How to reduce dose in Cardio CT
SOMATOM Definition Flash, syngo CT 2011B


Coronary CT Angiography is one of the more challenging CT acquisitions in your daily practice. With the tips and tricks provided in this flyer, you will be prepared to decide on the scan mode and reconstruction settings. The unique technology of the Flash Spiral is covered, as are the other scan modes for Cardio CT on the SOMATOM Definition Flash.

How to scan with CARE Dose4D
syngo CT 2011


CARE Dose4D adjusts the tube current automatically for the individual patient and examination. This flyer provides information about the settings and how they can be customized to match the clinical needs of the institution based on the technology implemented in syngo CT 2011.


How to scan with CARE kV
syngo CT 2011


CARE kV makes automated tube voltage adjustment possible, and CARE Child even allows for scanning with 70 kV. This flyer includes information about the prerequisites and workflow, and information about the technology of tube voltage adaption.


How to scan children with FAST CARE
syngo CT 2011


The new dose management features will be especially beneficial to the youngest patients due to their increased sensitivity to radiation dosage. To meet special requirements in pediatric CT imaging, this flyer summarizes tips and tricks for scanning children with FAST CARE.


Download: What Does Your CT Dose Say About Your Facility?
Even before its patients began asking about dose, Zwanger-Pesiri started to explore how it couldfurther reduce dose in CT.

Link: Dual Source CT Experts Community
Reducing radiation dose is a key topic in CT imaging. Dual source CT enables shorter examination times entailing lower radiation exposure. Discuss hot topics or ask the expert your specific question about Dual Source CT (DSCT) and Flash scanning in practice.

Link: Image Wisely - Radiation Safety in Adult Medical Imaging

Image Wisely offers resources and information to radiologists, medical physicists, other imaging practitioners, and patients.


Link: Ultralow-Dose Chest Computed Tomography for Pulmonary Nodule Detection: First Performance Evaluation of Single Energy Scanning With Spectral Shaping.
Gordic S1, Morsbach F, Schmidt B, Allmendinger T, Flohr T, Husarik D, Baumueller S, Raupach R, Stolzmann P, Leschka S, Frauenfelder T, Alkadhi H.; 2014 Mar 4.

The purpose of this study was to evaluate the image quality and sensitivity of ultralow radiation dose single-energy computed tomography (CT) with tin filtration for spectral shaping and iterative reconstructions for the detection of pulmonary nodules in a phantom setting.

Link: Image quality of ultra-low radiation exposure coronary CT angiography with an effective dose <0.1 mSv using high-pitch spiral acquisition and raw data-based iterative reconstruction.
Schuhbaeck A, Achenbach S, Layritz C, Eisentopf J, Hecker F, Pflederer T, Gauss S, Rixe J, Kalender W, Daniel WG, Lell M, Ropers D.
Eur Radiol. 2013 Mar;23(3):597-606. doi: 10.1007/s00330-012-2656-2. Epub 2012 Sep 16.

Authors evaluated the potential of prospectively ECG-triggered high-pitch spiral acquisition with low tube voltage and current in combination with iterative reconstruction to achieve coronary CT angiography with sufficient image quality at an effective dose below 0.1 mSv.

Link: Individualization of Abdominopelvic CT Protocols With Lower Tube Voltage to Reduce IV Contrast Dose or Radiation Dose
David M. Hough, Lifeng Yu, Maria M. Shiung, Rickey E. Carter, Jennifer R. Geske, Shuai Leng, Jeff L. Fidler, James E. Huprich, D. Y. Jondal, Cynthia H. McCollough and Joel G. Fletcher
July 2013, Volume 201, Number 1

The purpose of this study was to validate an individualized approach to contrast-enhanced body CT using size-specific tube potential selection to reduce either IV contrast or radiation dose while maintaining diagnostic image quality.

Link: Carotid CTA: Radiation Exposure and Image Quality with the Use of Attenuation-Based, Automated Kilovolt Selection
A. Eller, W. Wuest, M. Kramer, M. May, A. Schmid, M. Uder, and M.M. Lell
Published August 1, 2013 as 10.3174/ajnr.A3659

CTA is considered the imaging modality of choice in evaluating the supraaortic vessels in many institutions, but radiation exposure remains a matter of concern. The objective of the study was to evaluate a fully automated, attenuationbased kilovolt selection algorithm in carotid CTA in respect to radiation dose and image quality compared with a standard 120-kV protocol.

Link: Acute Intracranial Hemorrhage in CT: Benefits of Sinogram-Affirmed Iterative Reconstruction Techniques
B. Bodelle, E. Klein, N.N.N. Naguib, R.W. Bauer, J.M. Kerl, F. Al-Butmeh, J.L. Wichmann, H. Ackermann, T. Lehnert, T.J. Vogl and B. Schulz
Published online before print November 21, 2013, doi: 10.3174/ajnr.A3801; AJNR 2013

Acute intracranial hemorrhage represents a severe and time critical pathology that requires precise and quick diagnosis, mainly by performing a CT scan. The purpose of this study was to compare image quality and intracranial hemorrhage conspicuity in brain CT with sinogram-affirmed iterative reconstruction and filtered back-projection reconstruction techniques at standard (340 mAs) and low-dose tube current levels (260 mAs).

Link: Iterative Reconstructions versus Filtered Back-Projection for Urinary Stone Detection in Low-Dose CT
Anna Winklehner, MD, Iris Blume, MD, Sebastian Winklhofer, MD, Daniel Eberli, MD, PhD, Ralph Gnannt, MD, Thomas Frauenfelder, MD, Hatem Alkadhi, MD, MPH, EBCR
Volume 20, Issue 11 , Pages 1429-1435, November 2013

To evaluate prospectively, in patients with suspected or known urinary stone disease, the image quality and diagnostic confidence of nonenhanced abdominal low-dose computed tomography (CT) with iterative reconstruction (IR) compared to filtered back-projection (FBP).

Link: Effects of Automated Kilovoltage Selection Technology on Contrast-enhanced Pediatric CT and CT Angiography

Marilyn J. Siegel, MD, , Charles Hildebolt, DDS, PhD, and , David Bradley, BS
August 2013, Volume 268, Issue 2

To assess effects of an automated kilovoltage selection tool on radiation dose, tube current, and image quality in pediatric contrast material–enhanced thoracoabdominal computed tomography (CT) and CT angiography.

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