The Stellar detector

The Stellar detector is Siemens Healthineers’ first fully integrated detector. Conventional detector modules rely on a signal processing board where the photodiode is arranged separately to the analog-to-digital converters. This causes electronic noise because the signal has a relatively long way to travel between the diode and the converters. In the Stellar detector, the board has been simplified and the converters are arranged directly underneath the photodiode. This full integration reduces electronic noise because the analog signal from the photodiode is directly converted into a robust digital signal, which significantly improves the signal-to-noise ratio (SNR) and thus optimizes dose efficiency and image quality.

Find out more about SOMATOM® Definition Edge and the Stellar detector

Find out more about SOMATOM Drive and the StellarInfinity detector

Find out more about SOMATOM Force and the StellarInfinity detector

The Stellar detector offers improved spatial resolution, image quality, and dose efficiency – expanding the dynamic range of your scanner.

The Dual Source systems SOMATOM Force and SOMATOM Drive are equipped with the latest StellarInfinity detectors and SOMATOM Definition Flash is equipped with Stellar detector.


Key Benefits

Features & Benefits

Stellar Detector



Widen your clinical capabilities with technology that makes possible sharp and clear images despite reduced dose – especially beneficial for bariatric and pediatric imaging. 

Your benefit: TrueSignal technology for increased image quality in low-signal imaging


Widen your clinical capabilities and increase diagnostic confidence with technology that makes possible an extremely high level of image detail and consistently high quality. 

Your benefit: Edge technology for ultra-thin slices for increased spatial resolution


Widen your clinical capabilities with technology that increases the sensitivity of the detector and lets you better visualize finer structures – especially for low kV datasets. 

Your benefit: HiDynamic Range for enhanced Dual Energy and low-contrast imaging


Clinical Use

Stellar Detector

The Stellar detector efficiently reduces cross-talk between neighboring detector channels and reduces image noise during acquisition. This significantly reduces slice blurring, resulting in a more precise visualization of calcified lesions and in-stent restenosis evaluation in smaller stents. 

Combining the Stellar detectors with Flash Spiral acquisition at 70 kV tube voltage offers three major advantages in pediatric imaging: extremely low radiation exposure with excellent image detail and without the need for potentially harmful sedation. 

Dual Source is ideal for bariatric imaging due to the sufficient power reserves of two sources. In addition, the Stellar detector reduces virtually electronic noise, so that the signal-to-noise ratio is significantly improved. This allows much better X-ray quanta utilization, which is of particular benefit for bariatric or low-dose pediatric imaging. 

The Stellar detector delivers significantly increased detail and sharpness, especially at the edges of organs or in vessels, in low dose or low signal imaging. This offers outstanding visualization of the pancreatic duct and the aortic dissection – even in obese patients. The Stellar detector’s Edge technology can also produce z-UHR-like high-resolution inner ear images from conventional head exams.

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