Technology | November 24, 2008

New Siemens CT Offers Faster Speed, Lower Dose

November 24, 2008 - With the SOMATOM Definition Flash dual-source CT, Siemens Healthcare is introducing a CT scanner that aims to set new standards regarding speed and dose reduction.

The system requires only a fraction of the radiation dose that systems previously required to scan even the tiniest anatomical details faster than ever before, according to Siemens. The SOMATOM Definition Flash featuring two X-ray tubes that simultaneously revolve around the patient's body. The fastest scanning speed in CT (i.e., 43 cm/s) and a temporal resolution of 75 ms, enable for example complete scans of the entire chest region in 0.6 seconds. Thus, patients are no longer required to hold their breath during the exam the way they had in the past. At the same time, the SOMATOM Definition Flash operates at an extremely reduced radiation dose. For example, a spiral heart scan can be performed with less than 1 millisievert (mSv), whereas the average effective dose required for this purpose usually ranges from 8 mSv to 40 mSv.

Siemens will present its new SOMATOM Definition Flash CT scanner at the 94th Scientific Assembly and Annual Meeting of the Radiological Society of North America (RSNA 2008) from Nov. 30 - Dec 5 at McCormick Place (Booth #922, East Building/Lakeside Center, Hall D) in Chicago. This new generation of dual- source CT scanners, featuring two X-ray tubes and two detectors, will provide a genuine innovation boost to dual-source technology. The speed of the SOMATOM Definition Flash reportedly offers decisive advantages, especially regarding examinations of moving structures, such as the thorax and the heart. The gantry (i.e., the X-ray detector system surrounding the bore) rotates about its own axis in just 0.28 s. It is this extraordinary rotational speed that enables a scan speed never before attained in CT (i.e., up to 43 cm per second) and temporal resolution of 75 milliseconds, said Siemens. The patient is moved through the CT tube more than twice as fast as with any conventional system. At the same time, scans acquired with the SOMATOM Definition Flash require a much lower radiation dose than conventional scans. While the average effective dose for a heart CT scanner ranges from 8 mSv to 40 mSv, the new Siemens CT scanner gets by with less than 1 mSv. In comparison, the X-ray radiation that everyone is exposed to each year from natural sources amounts to 2 mSv to 5 mSv. The dose values of the new Siemens CT scanner lies below those of an intracardiac catheter examination, thus opening up possibilities for using CT scanners for routine cardiological examinations, according to the company.

For more information: www.siemens.com/healthcare

Related Content

Hospital for Special Surgery Invests in Sectra Orthopedic 3-D Planning Software
News | Orthopedic Imaging | January 18, 2018
January 18, 2018 – International medical imaging IT and cybersecurity company Sectra announces that Hospital for Spec
Philips Introduces Technology Maximizer Program for Imaging Equipment Upgrades
Technology | Imaging | January 17, 2018
January 17, 2018 — Philips recently announced the launch of Technology Maximizer, a cross-modality program designed t
Fat Distribution in Women and Men Provides Clues to Heart Attack Risk
News | Women's Health | January 11, 2018
January 11, 2018 – It’s not the amount of fat in your body but where it is stored that may increase your risk for hea
Emergency Radiologists See Inner Toll of Opioid Use Disorders

Rates of Imaging Positivity for IV-SUDs Complications. Image courtesy of Efren J. Flores, M.D.

News | Clinical Study | January 11, 2018
January 11, 2018 – Emergency radiologists are seeing a high prevalence of patients with complications related to opio
Minimally Invasive Treatment Provides Relief from Back Pain

Lumbar spine MRI showing disc herniation and nerve root at baseline and one month after treatment

News | Interventional Radiology | January 11, 2018
The majority of patients were pain free after receiving a new image-guided pulsed radiofrequency treatment for low back...
CT Shows Enlarged Aortas in Former Pro Football Players

3-D rendering from a cardiac CT dataset demonstrating mild dilation of the ascending aorta.

News | Computed Tomography (CT) | January 11, 2018
Former National Football League (NFL) players are more likely to have enlarged aortas, a condition that may put them at...

Size comparison between 3-D printed prosthesis implant and a penny.

News | 3-D Printing | January 11, 2018
January 11, 2018 — Researchers using...
BlueCross BlueShield Companies in Eight States Issue Positive Medical Policies for HeartFlow FFRct Analysis
News | CT Angiography (CTA) | December 28, 2017
HeartFlow Inc. announced that Health Care Service Corp. (HCSC), which operates Blue Cross and Blue Shield plans in five...
Artificial intelligence was the number one topic in radiology in 2017.

Artificial intelligence was the number one topic of interest in radiology in 2017, based on the most popular articles and videos on ITN in 2017.

Feature | Imaging | December 28, 2017
The Imaging Technology News (ITN) website had another record year with more than 1.25 million page views in 2017.
Median Technologies Collaborating With Chinese Hospital for Lung Cancer Screening Programs. Dave Fornell
News | Lung Cancer | December 22, 2017
Median Technologies recently announced a research collaboration agreement with Xingtai People's Hospital, Xingtai City...
Overlay Init