Low dose and high resolution Runoff
CT Angiography

"Revolution CT provides the flexibility to perform vascular examination using multi-volume axial imaging or helical mode with up to 80 mm collimation to optimize the results while delivering low dose thanks to ASiR-V."

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

Clinical Case

Patient History

A man in his 60s is referred to CT for follow-up of lower limb arteriopathy.

Acquisition

  • Helical mode 

  • Pitch 0.984:1

  • kV Assist & SmartmA to tailor dose to patient’s morphology: 100 kV, Noise Index 26

  • BMI: 22

  • ASiR-V1 to lower dose

  • 1 sec rotation speed

  • DLP 226 mGy-cm

  • 2 mSv2

  • Coverage: 1210 mm

  • Acquisition time: 35 sec

Results


Conclusion

This exam demonstrates the need of high spatial resolution for a confident diagnosis in severe arteriopathy cases. The significant dose reduction capabilities of ASiR-V allowed us to get this high image quality at only 226 mGy-cm.


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, helping you 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% relative to FBP at the same image quality3 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.



Related

Footnote

Downloads

Revolution CT - Low Dose Clinical Cases

PDF 1MB
  • Date Created 11/13/2014
  • DocID JB25620XXa