Get further. With True Dual Energy.
DEfinitely Siemens Healthineers

Get further. With True Dual Energy.

Dual Energy examinations provide answers for a wide range of diagnostic challenges. With Siemens SOMATOM® CT scanners, you receive excellent Dual Energy images at equal, or often lower dose levels compared to conventional CT examinations. This makes Dual Energy a valid modality for many types of patients and a wide variety of clinical questions. That’s what True Dual Energy is about.


DEfinitely excellent images

Dual Energy from Siemens Healthineers – True Dual Energy – offers crisp image quality with no extra radiation dose. In addition, Dual Energy CT offers you clinical information beyond morphology and allows you to highlight, characterize, quantify, and differentiate the material in your scans. Here are three examples:

Optimum Contrast for sharper image contrast
Optimum Contrast is an intelligent method that changes the blending ratio of low and high energy data on a pixel-by-pixel basis, depending on the corresponding Hounsfield units (CT numbers). For higher CT numbers, which occur in regions of high iodine concentration, larger proportions of the image are taken from low tube energy data. As a result, areas of contrast enhancement are accentuated.

Monoenergetic imaging for reducing metal artifacts
With Monoenergetic imaging, metal artifacts can be reduced in both Single Source and Dual Source Dual Energy data. Select the energy level at which implants, clamps, or screws will have the smallest impact on image quality and get unsurpassed scan results.

Electron density and effective atomic number maps in one examination
The attenuation of X-ray, next to others, depends on the electron density and the effective atomic number. Both parameters are characteristic for different materials. Thus syngo.CT DE Rho/Z may aid in the differentiation and characterization of different tissues in the body.


DEfinitely the right dose

Only with Siemens Healthineers' SOMATOM CT scanners, you get all advantages of True Dual Energy imaging with no dose penalty in either Single Source or Dual Source Dual Energy scans. With the latest dose reduction techniques, such as the Tin Filter, ADMIRE, and CARE Dose4D, you will find the right dose level for generating valuable diagnostic information at the best possible image quality.

Following the ALARA principle, Siemens Healthineers has introduced Dual Energy scan modes that utilize all available dose reduction techniques – such as CARE Dose4D™ for real-time mA modulation and SAFIRE/ADMIRE, to reduce the mA created by iterative reconstruction.

Dose reduction in Dual Spiral Dual Energy
In the Dual Spiral Dual Energy scan mode, two consecutive spiral scans are performed at approximately one-half the dose so that you can be certain of compliance with the ALARA principle.

Dose reduction in TwinBeam Dual Energy
TwinBeam Dual Energy consist of a regular 120 kV spectrum filtered by different material. As it is a normal spiral scan all dose reduction features can be applied, such as Care Dose4D and/or SAFIRE¹ /ADMIRE². The TwinBeam Dual Energy technique does not have any dose penalty, thus it always follows the ALARA principle. 

Dose reduction in Dual Source Dual Energy
SOMATOM Force and SOMATOM Drive with its Tin Filters further established Dual Energy as a dose-neutral technology. The Tin Filters filters out unnecessary photons from the high-energy X-ray tube. It permits the use of Dual Energy in daily practice at a dose comparable to a conventional 120-kV scan, with optimal spectra separation for excellent Dual Energy data quality.

DEfinitely versatile

Every patient is different. But True Dual Energy offers you dedicated protocols and evaluation software applications for virtually all patients and a wide range of clinical questions.

Even for difficult patient conditions
You can use Siemens Healthineers’ Dual Energy with all Single Source CTs ranging from SOMATOM Scope Power, SOMATOM Perspective, and SOMATOM Definition AS family to SOMATOM Definition Edge. In addition, with SOMATOM Definition Flash, SOMATOM Drive, and SOMATOM Force you get the outstanding Dual Source CT.

Compliance with the ALARA principle allows you to tap the advantages of Dual Energy with a very wide range of patients – including children as well as older, obese and fragile patients. On top of that, optimized scan protocols let you scan at low contrast agent dose and flow rate.

Wide range of applications for fast, definitive answers
Thanks to an ever-growing spectrum of applications, True Dual Energy helps you find fast and confident answers to a wide range of clinical questions – from lung nodes to brain hemorrhage, from perfusion defects in the heart to the evaluation of the malignancy of tumor lesions.


1In clinical practice, the use of SAFIRE may reduce CT patient dose depending on the clinical task, patient size, anatomical location, and clinical practice. A consultation with a radiologist and a physicist should be made to determine the appropriate dose to obtain diagnostic image quality for the particular clinical task. The following test method was used to determine a 54 to 60% dose reduction when using the SAFIRE reconstruction software. Noise, CT numbers, homogeneity, low-contrast resolution and high contrast resolution were assessed in a Gammex 438 phantom. Low dose data reconstructed with SAFIRE showed the same image quality compared to full dose data based on this test. Data on file.

2Image quality as defined by low contrast detectability using a model observer method for evaluation. Equivalent low contrast detectability can be achieved with 80% to 85% less dose using ADMIRE at highest strength level for thin (0.6 mm) reconstruction slices in measured and simulated body and head phantoms for low contrast objects with different contrasts. See ADMIRE data sheet for further information.
In clinical practice, the use of ADMIRE may reduce CT patient dose depending on the clinical task, patient size, anatomical location, and clinical practice. A consultation with a radiologist and a physicist should be made to determine the appropriate dose to obtain diagnostic image quality for the particular clinical task.