Integrated in the SOMATOM® Definition Flash, SOMATOM Definition Edge, and SOMATOM Definition AS+ (optional), the Stellar detector offers improved spatial resolution, image quality, and dose efficiency – expanding the dynamic range of your scanner.
The Stellar detector
The Stellar detector delivers innovations in CT imaging with ultra-thin slices, very high spatial resolution, and previously unseen detail. The first fully integrated detector with TrueSignal technology, it significantly reduces electronic noise for uncompromised diagnostic outcome at a low dose.
Features & Benefits
TrueSignal Technology for lower noise at lower dose
TrueSignal Technology minimizes electronic noise and cross-talk in the detector. The resulting higher signal-to-noise ratio (SNR) means that images are sharper and clearer despite a reduced dose. When the signal is lowered – either by high attenuations from obese or broad shouldered patients, or by reducing the applied mA – the impact of the Stellar detectors increases. This feature is especially beneficial for obese imaging and ultra low dose examinations, for example in pediatric imaging.
HiDynamics for excellent low-energy images
Thanks to full electronic integration, the Stellar detector now benefits from an extended dynamic range instead of having to switch bandwidth like conventional detectors. This unique feature is called HiDynamics. It increases the sensitivity of the detector for visualizing finer structures, especially for low kV datasets.
Thinner slices for higher spatial resolution
The Stellar detector generates ultra-thin slices – only 0.5 mm – with very high spatial resolution – up to 0.30 mm – resulting in an extremely high level of image detail. In addition, the Stellar detector provides a homogeneous slice profile with the same spatial resolution and SNR in the entire Field of View (FoV) – delivering consistently high image quality.
Clinical Use
Excellent coronary stent imaging
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.
Lower dose for pediatric imaging
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.
Reduced noise for easier bariatric/obese imaging
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.
Outstanding image detail for improved diagnostics
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.