News | January 18, 2010

Children's Hospital Installs CT with Dose Protection

January 19, 2010 – While computed tomography (CT) is a crucial medical imaging tool in diagnosing illness and disease in children, there is always a concern over the amount of radiation dose a pediatric patient receives. Medical institutions, such as St. Louis Children’s Hospital, in St. Louis, is recognized as one of the leading pediatric healthcare centers in the United States and enhancing its nationally renowned pediatric care program by using CT with reduced radiation dose technology.

“In light of recent studies on radiation dose and best practices for dose reduction, it is essential to employ a CT scanner that can not only ensure some dose reduction, but provide one of the fastest scan speeds, while still maintaining optimal imaging performance,” said Marilyn J. Siegel, M.D., division of diagnostic radiology and professor of radiology and pediatrics, St. Louis Children’s Hospital. “This latest addition to our CT family allows Children’s Hospital to better serve our young patients with safe, effective, quality care.”

In the July 2009 issue of Radiology (Deak P., Langner O., Lell M., Kalender W. "Effects of adaptive section collimation on patient radiation dose in multisection spiral CT." Radiology, vol. 252, issue 1, July 2009) a team of researchers evaluated the potential effectiveness of adaptive collimation in reducing CT radiation dose owing to z-overscanning (one of the factors responsible for radiation burden in spiral CT examinations) by using dose measurements and dose simulations.

The data revealed that by using adaptive section collimation, a substantial dose reduction of up to 10 percent was achieved for cardiac and chest CT when measurements were performed free in air and of 7 percent, on average, when measurements were performed in phantoms. For scan ranges smaller than 12 cm, ionization chamber measurements and simulations indicated a dose reduction of up to 38 percent, according to the team’s findings.

The research team concluded that adaptive section collimation allows substantial reduction of unnecessary exposure owing to z-overscanning in spiral CT. It can be combined in synergy with other means of dose reduction, such as spectral optimization and automatic exposure control.

The hospital will install a SOMATOM Definition AS CT systems from Siemens Healthcare, which provides CARE Dose 4D, a real-time dose modulation technology. The software assists in guaranteeing a combination of maximum image quality at minimum dose for every patient in every spiral scan. The entire SOMATOM Definition AS family of scanners comes with adaptive dose shield and set of pediatric protocols to provide optimal patient care.

For more information: www.siemens.com/healthcare

Related Content

A CT calcium scoring image showing calcified plaques in coronary vessel segments. The higher the calcium content of the vessels, the high risk the patient is for a heart attack event. CAC exam

A CT calcium scoring image showing calcified plaques in coronary vessel segments. The higher the calcium content of the vessels, the higher risk the patient is for a heart attack event. Image courtesy of Canon Medical Systems.

Feature | Computed Tomography (CT) | October 17, 2018 | Dave Fornell, Editor
A picture is worth a thousand words, and to patients concerned about their health, detailed images of the coronary an
Abdominal Aortic Calcification May Signal Future Heart Attack

Image from computed tomography (CT) colonography shows segmented abdominal aortic calcification measured with semiautomated CT tool on coronal image. Within region of interest over aorta selected by user, tool automatically segments and quantifies aortic calcification (shown in blue). 

Image Credit: O’Connor S D, Graffy P M, Zea R, et al. Does nonenhanced CT-based quantification of abdominal aortic calcification outperform the Framingham Risk Score in predicting cardiovascular event sin asymptomatic adults? Radiology doi: 10.1148/radiol.2018180562. Published online Oct. 2, 2018. © RSNA.

News | Computed Tomography (CT) | October 12, 2018
Computed tomography (CT)-based measures of calcification in the abdominal aorta are strong predictors of heart attacks...
Siemens Healthineers Announces First U.S. Install of Somatom go.Top CT
News | Computed Tomography (CT) | September 17, 2018
September 17, 2018 — The Ohio State University Wexner Medical Center in Columbus recently became the first healthcare
Key Patient Preparations for a CT Scan
News | Computed Tomography (CT) | September 05, 2018
The Center for Diagnostic Imaging (CDI) in Miami recently released a list of important preparations patients should...
Videos | Computed Tomography (CT) | July 25, 2018
A discussion with Patricia Dickson, LRT(CT), director of imaging and outpatient services, Capital Cardiology Associat
Videos | Computed Tomography (CT) | July 23, 2018
Ed Nicol, M.D., FSCCT, MBA, head of cardiac CT, Royal Brompton Hospital, London, and chair of the Society of Cardiova
Videos | Computed Tomography (CT) | July 17, 2018
An interview with Patrick Serruys, M.D., Ph.D., Imperial College London, principal investigator of the SYNTAX III Tri
Zebra Medical Vision Announces FDA 510(k) Clearance of Coronary Calcium Algorithm
Technology | Computed Tomography (CT) | July 12, 2018
Zebra Medical Vision has received 510(k) clearance from the U.S. Food and Drug Administration (FDA) for its Coronary...
IAC Awards First CT Accreditation for a Mobile Stroke Unit
News | Computed Tomography (CT) | July 09, 2018
The Intersocietal Accreditation Commission (IAC) recently recognized the University of Tennessee Health Science Center...
Overlay Init