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April 15, 2019

UC Davis Health Images First U.S. Patient Using Ultra-High Resolution CT with Canon Medical’s Aquilion Precision

University of California, Davis (UC Davis) Health is the first institution in the U.S. to use Ultra-High Resolution CT (UHR CT) for clinical imaging, thanks to the installation of the Aquilion Precision.

Initial Global Use of the Aquilion Precision has Demonstrated Significantly Increased Visibility of Small Anatomical Structures

TUSTIN, Calif., April 15, 2019 University of California, Davis (UC Davis) Health is the first institution in the U.S. to use Ultra-High Resolution CT (UHR CT) for clinical imaging, thanks to the installation of the Aquilion PrecisionTM  from Canon Medical Systems USA, Inc. Reports in the initial use of this technology from global centers indicate significantly increased visibility of small anatomical structures is possible, allowing UC Davis to now offer their CT patients better image resolution than available in the U.S. previously.1,2,3,4 In collaboration with Canon Medical, UC Davis Health plans to continue investigating the diagnostic potential now available because of the significant improvement in resolution.

Featuring an all-new detector as well as tube, gantry and reconstruction technologies, the Aquilion Precision may make it possible to help the facility expand visualization of anatomical structures and conditions. The system’s features make it capable of resolving anatomy as small as 150 microns for advanced image detail. Innovative dose efficiency with detector channels that are only 0.25 mm thick, combined with improvements in scintillator quantum efficiency, detector circuitry and other DAS components, result in a dose-efficient detector with UHR CT capabilities. The system also features resolution never before seen in CT imaging with the industry’s smallest focal spot tube at 0.4 mm x 0.5 mm and the industry’s first 1024 and 2048 (research only) reconstruction matrix for further increased resolution.

“The installation and use of the Aquilion Precision on the UC Davis Health campus is more than the introduction of a new CT system, it is a foray into a new paradigm in CT imaging to help improve patient care,” said Dominic Smith, senior director, CT, PET/CT, and MR Business Units, Canon Medical Systems USA, Inc. “Canon Medical is looking forward to working with UC Davis Health to explore new territories in diagnostic imaging, thanks to the technical and clinical value of this technology.”

A ribbon cutting opening ceremony will be held Friday, April 26, 2019, to commemorate the installation of the Aquilion Precision. Leadership from UC Davis Health, Canon Medical and members of the local community will be present.

About Canon Medical Systems USA, Inc.

Canon Medical Systems USA, Inc., headquartered in Tustin, Calif., markets, sells, distributes and services radiology and cardiovascular systems, including CT, MR, ultrasound, X-ray and interventional X-ray equipment. For more information, visit Canon Medical Systems’ website at

About Canon Medical Systems Corporation

Canon Medical Systems Corporation develops and manufactures diagnostic imaging systems including CT, MRI, ultrasound, X-ray systems and clinical laboratory systems and provides them to around 140 countries and regions around the world, offering technology that provides faster diagnosis and early treatment. Under the slogan “Made for Life” (Made for Partnerships, Made for Patients, Made for You.), Canon Medical Systems is making positive contributions toward hospital management, and provides a range of patient-friendly healthcare systems and services, continuing its long tradition of contributing to healthcare.


  1. Meijer FJA, Schuijf JD, de Vries J, Boogaarts HD, van der Woude W-J, Prokop M. Ultra-high-resolution subtraction CT angiography in the follow-up of treated intracranial aneurysms. Insights Imaging. 2019;10(1):2.
  2. Onishi H, Hori M, Takashi O, et al. Phantom Study of In-Stent Restenosis at High-Spatial-Resolution CT. Radiology. 2018:0-5.
  3. Yanagawa M, Hata A, Honda O, et al. Subjective and objective comparisons of image quality between ultra-high-resolution CT and conventional area detector CT in phantoms and cadaveric human lungs. Eur Radiol. 2018:1-9.
  4. Honda O, Yanagawa M, Hata A, et al. Influence of gantry rotation time and scan mode on image quality in ultra-high-resolution CT system. Eur J Radiol. 2018;103:71-75.