Conclusive Triple-Rule-Out Study Without Compromise

"With Revolution CT, triple-rule-out studies are now robust and reproducible with easy synchronization with contrast injection and lower dose, with uncompromised image quality"

Jean-Louis Sablayrolles
Head of Cardiovascular Imaging at Centre Cardiologique du Nord, Saint-Denis, France

Clinical Case

Patient History

A woman in her 50s, complaining of paroxysmal chest pain for one month and presenting with left ventricular hypertrophy, was referred to CT for triple-rule-out after a vasovagal episode related to stress.


    Axial scanning with ECG gating:                                                                                                                                                                                     

    • Smart coverage to automatically select anatomy specific collimations required to scan the prescribed area 

    • kV Assist & SmartmA to tailor dose to patient’s morphology: 80 kV, 295-320 mA, Noise Index 30

    • BMI: 17

    • ASiR-V1 to lower dose

    • 0.28 sec rotation speed

    • Heat rate 56-69 BPM

    • DLP 36 mGy-cm

    • 0.5 mSv2

    • Coverage : 240mm

    • Exposure time: 0.56 sec



Thanks to the 160 mm coverage, this exam was performed with two axial volumes for optimal visualization of pulmonary arteries, thoracic aorta and motion free coronaries. The new generation of iterative reconstruction ASiR-V delivers diagnostic image quality at half a milliSievert.

Enabling Technologies

  • Revolution CT puts the next generation of iterative reconstruction, ASiR-V, up to 160 mm of multivolume axial scanning and up to 80 mm collimation for helical scanning in your hands, allowing you to acquire high-definition images at lower doses. 

  • ASiR-V1 was designed to deliver reduced noise levels and improve low-contrast detectability so you can routinely reduce dose up to 82% for patients of all ages

  • Revolution CT introduces the groundbreaking Gemstone Clarity Detector that gives you 160 mm whole organ coverage with best-in-class spatial resolution. The focally-aligned, miniaturized detector modules and 3D collimator are designed to reduce electronic noise by 25% which may improve image quality and reduce artifacts in low signal conditions, for example in large patients or when scanning at low kV and mA. 

  • Revolution CT features also the latest Smart Dose technologies designed to help you acquire high quality images using lower doses of radiation. Smart Dose technologies may help you make a more accurate diagnosis and lower exposure for patients across routine and advanced exams, including dynamic acquisitions for perfusion and 4D studies. Smart Dose technologies include kV Assist that helps you select the right settings for the patient being scanned. It recommends tube voltage and current to achieve the lowest dose while meeting your image quality goals. 

  • Finally, Revolution CT allows 70 kV scanning so you can develop low-dose protocols, which are especially suitable for pediatric imaging.



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