A Better Exam

If your facility is like most, you’re looking for imaging solutions to help you make more confident diagnoses, reduce the need for costly or invasive procedures, ensure consistent quality across your exams, and differentiate your capabilities from those of other providers.

What if you could address all these needs with a single CT system that would help you:

  • Successfully scan more patients including those with metal implants
  • Triage and stratify kidney stone patients faster through quantitative stone characterization
  • Serve as a gatekeeper for more expensive procedures for cardiac patients by acquiring anatomical and functional information in a single scan
  • Gain richer information on tissue characterization without a radiation dose penalty
  • Optimize contrast media exposure and improve staff workflow

A unique solution

Revolution* GSI helps make clinical excellence routine, delivering consistently high-definition imaging and expanding diagnostic capabilities across applications. It enables you to take CT beyond classical anatomical assessment to quantitative tissue characterization and advanced functional imaging. And it may help reduce radiation dose for your patients.


Helping you make a more confident diagnosis with better information

  • Oncology. GSI may help clinicians detect and characterize subtly enhancing lesions like small hyper vascular nodules and lymph nodes.  
  • Abdominal imaging. GSI may help achieve excellent results in a full range of abdominal studies. This is especially important with structures whose HU values are too similar to distinguish via conventional CT, but whose composition differs radically. 
  • Vascular imaging. With GSI’s ability to optimize contrast-media utilization, Revolution* GSI may enable exceptional vascular studies even at low contrast volumes -- of particular importance for patients with impaired renal function. 
  • Metal-artifact reduction. GSI uses monochromatic images to perform precise projection measurements and minimize the signal errors caused by high-density material.
  • Cardiac Imaging. GSI addresses cardiac CT’s biggest challenges, including calcium blooming, beam hardening and characterization of accurate perfusion and plaque characterization. It also integrates SnapShot* Freeze and GSI Assist, which make it easy to achieve accurate functional and anatomical stenosis assessment with a single exam.

Helping you increase your patient volume and decrease costs

The diagnostic confidence that quantitative spectral imaging provides may serve as a gatekeeper for more expensive invasive procedures, particularly for cardiac patients with high or irregular heart rates.

Revolution GSI’s unique one-tube, one-generator approach makes the system affordable to many facilities and is easier to site than other scanners in its class, while potentially reducing both downtime and maintenance costs.

Helping you lead the way in delivering high-quality care at ultra-low dose

Revolution GSI is virtually dose-neutral in comparison to standard 120 kV scans today. This is primarily because of its full integration with ASiR* and the availability of new GSI presets, which ensure optimal image quality at the lowest practical dose1.

The new GSI Assist algorithms help technologists choose the right presets for each patient and each exam to help achieve the optimal balance of image quality and radiation dose.

1. In clinical practice, the use of ASiR 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.


Gemstone detector

Gemstone* is the essential innovation that drives the high definition breakthrough. Comprised of our proprietary CT scintillator material, the Gemstone is the first new detector material in 20 years. Its exclusive garnet structure enables high-definition imaging of 0.23 mm and fast kV switching. Gemstone’s recovery time is four times faster than comparable detectors, and its primary speed is 100 times faster than competitors.

How it works

Enabled by the Gemstone detector, GSI’s unique fast-kV switching technology offers 0.25 msec temporal sampling of 140 kV and 80 kV at full 50 cm field of view (FOV) with near perfect anatomical registration – even at dose levels the same as single standard acquisition. This acquisition allows for reconstruction and viewing of monochromatic images from 40 keV to 140 keV.

Modern imaging intelligence

Revolution* GSI features Smart Technologies, a suite of intelligent CT tools designed to help you achieve your imaging goals with improved efficiency and expanded applications, all while delivering diagnostic confidence with lower levels of radiation.

Smart Dose with kV Assist provides automated kV and mA recommendations allowing users to tailor protocols to each patient, clinical indication and each scan area. Organ Dose Modulation automatically reduces dose for superficial tissues such as the eyes and anterior chest, creating a virtual shield for sensitive anatomy.

Smart Cardiac with SnapShot* Assist helps you optimize cardiac scanning for individual patients based on their specific parameters.

Smart Spectral with GSI Assist helps you optimize GSI protocols to your patient and clinical needs.

Leading-edge technology throughout the image chain

Leading edge clarity requires innovation throughout the image chain — and across every variable of image development. With technologies and features that set new benchmarks for image clarity, high-definition CT opens the door to new noninvasive diagnostic procedures and innovative techniques for challenging conditions.

Data acquisition system

GE Healthcare’s Volara* DAS technology reduces electronic noise for outstanding image quality in both high and low signal areas of the anatomy. It’s also an integral part of the system’s improved spatial resolution across the entire field of view and delivers 2.5 times more views per rotation to improve x and y axis resolution and reduce artifacts.


The Performix* HD Tube enables the visualization of more detail with increased data sampling, ultra-fast kV switching and a maximum mA of up to 570mA on the small focal spot and 835mA on the large focal spot.


ASiR*, which comes standard on Revolution GSI, is the industry’s most-used iterative reconstruction technology with over 47 million patients benefiting from its use to date.

In addition, Revolution GSI offers Veo* as an option, the ultimate advancement in CT image reconstruction technology and the world’s first model-based iterative reconstruction product, enabling imaging under 1 mSv with profound clarity. With Veo, lower noise and higher resolution can be achieved within a single image. At the same time, significant dose reduction capabilities are now available, opening up new possibilities for challenging cases and sensitive patients. This breakthrough is changing the way physicians use CT imaging, delivering a combination of high-performance images and low dose that was previously unthinkable1.

1. In clinical practice, the use of ASiR and Veo 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.

Image Gallery


Deliver better care at the right dose

More than ever you are being asked to focus on lowering and managing radiation dose for every patient. Governments are enacting new laws that require everything from including the dose in interpretive reports to establishing committees and processes to manage protocols. Accrediting bodies are proposing and adopting new standards that require changes to credentialing and setting up regular protocol reviews. Professional organizations are establishing new diagnostic reference levels and guidelines for protocol management teams. All focused on ensuring that the lowest reasonable dose is used for every patient, every clinical situation, every time.

With this in mind, GE creates CT technologies to help you meet your challenges and goals today and tomorrow.

Imaging under 1 mSv with profound clarity1 
Veo*, offered as an option on Revolution* GSI, makes it possible for you to change the rules of CT imaging, acquiring high-quality images at doses that were previously unthinkable. Patients will benefit from your ability to use Veo to adapt both image quality and dose reduction for each specific clinical task. Using Veo you may be able to:

  • Improve resolution at lower doses to evaluate patients with intravascular stents, suspected joint injuries or diseases and other clinical applications where seeing finer details is important. 
  • Reduce artifacts like beam-hardening from bones, enabling you to see underlying structures more clearly in brain and other exams.
  • Reduce doses to less than 1 mSv for many of your most sensitive patients including follow-up exams, lung imaging and for pediatric patients.

Discovery CT750 HD FREEdom Edition- Veo

Built to work the way you do
Your days are busy. You don’t have extra time to spend after each exam setting up additional reconstructions and reformats. Which is why we’ve built the capabilities you’ll need right into the protocols. With Veo, you can prescribe and save thick slice reconstructions and coronal and sagittal reformats in each protocol.

1. In clinical practice, the use of Veo 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. In clinical practice, the actual level of LCD and spatial resolution and low signal artifact improvement may vary. Consult with a radiologist and a physicist.

[A] Obtained by EUR 16262 EN, using an abdomen factor of 0.015* DLP and a pelvis factor of 0.019* DLP.

[B] Obtained by EUR-16262 EN, using a chest factor of 0.017* DLP.

[C] Obtained by ICRP 10 year old head factor of 0.0032* DLP using a 16 cm phantom. Reference: Annals of the ICRP, Volume 37, Issue 1, March 2007.



Revolution* GSI is not yet CE marked. Not for sale in all regions. Revolution GSI is a commercial configuration of Revolution* Discovery* CT.