News | March 27, 2009

Siemens Demonstrates Flash Speed, Lowest Dose at ACC 2009

March 27, 2009 - Siemens Healthcare demonstrates fast speed and low dose for cardiac applications with the SOMATOM Definition Flash dual source computed tomography (CT) scanner at the 58th Annual Scientific Session of the American College of Cardiology (ACC) from March 29-31 in Orlando, FL, at booth #1842.

"The SOMATOM Definition Flash requires only a fraction of the radiation dose that systems previously required to scan even the tiniest anatomical details faster than ever before," said Kulin Hemani, vice president, CT, Siemens Medical Solutions USA, Inc. "Scanning the thorax, including the heart, can be done in only 0.6 seconds, taking the burden of breath-holding off the patient and allowing functional imaging for body regions up to 48 cm."

Temporal resolution of 75 ms and scan speed of up to 43 cm/s make heart-scanning possible, with dose levels below 1 millisievert (mSv), whereas the average effective dose required for this purpose usually ranges from 8 mSv to 40 mSv. The patient is moved through the CT-scanner more than twice as fast as with any conventional system, and at the same time, requiring a much lower radiation dose than conventional scans. In comparison, the X-ray radiation that the average person is exposed to each year from natural sources amounts to 2 mSv to 5 mSv. The dose values of the new Siemens CT scanner lie far below those of an intracardiac catheter examination, thus opening up possibilities for using CT scanners for routine cardiological examinations.

A scan of the entire heart can be performed in only 250 milliseconds, which is less than half a heartbeat. In addition, it is possible for physicians to reliably display a heart with a fast pulse or an irregular heart beat without using beta blockers, thus simplifying the workflow and yielding clinical and financial advantages. The SOMATOM Definition Flash is the only CT scanner on the market that enables the use of noninvasive cardiological diagnostic techniques as routine applications at the lowest possible radiation exposure levels.

The second generation of Dual Energy imaging will introduce a new imaging quality. The contrast in CT scans will be increased without having to apply the higher radiation dose previously required. This is achieved via a new, selective photon shield which blocks unnecessary parts of the energy spectrum. It thereby provides improved separation of the two simultaneous scans with low and high photon energy, without causing a higher radiation exposure than would result from an individual, conventional CT examination with only one energy source. Thus, the SOMATOM Definition Flash can always provide a double contrast which, for the first time ever, can also be used to classify the chemical composition of tissues via a CT scan in routine daily work.

Another technical development for keeping the patient's radiation exposure as low as possible is the X-CARE application. For the first time ever, this application selectively reduces the radiation exposure of dose-sensitive anatomical regions, such as the female breast. This is done by switching the X-ray tube assemblies off during the rotation phase in which the anatomical regions concerned are most directly exposed to radiation. In this way, it is possible to reduce the radiation exposure of individual anatomical regions by up to 40 percent.

Furthermore, an adaptive dose shield blocks irrelevant prespiral and postspiral radiation with dynamic diaphragms, thus ensuring that only a minimum and clinically essential radiation exposure occurs. This enables an additional 25 percent reduction of the dose required for routine examinations. The CARE Dose4D software, which analyzes the individual cross-sectional anatomy in real time and adapts the emitted X-ray dose accordingly, also helps to reduce radiation exposure.

In addition, Siemens CT Acute Care Engine provides a complete clinical portfolio for imaging emergency patients from head to toe. Using fast, direct 3D reconstruction, images can be reviewed before the patient is off the table. The SOMATOM Definition Flash, in combination with CT Acute Care Engine, streamline clinical workflow for cardiac, vascular, musculoskeletal, and stroke evaluation, turning data into diagnostic outcomes within minutes. By combining CT scanner features and programs, solutions can be designed to meet and exceed a site's acute care needs.

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
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...
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
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