Evaluation: Philips AlluraClarity FD20 Ceiling-Mounted Angiography System for Interventional Radiology/Vascular Applications

December 7, 2016 | Evaluations & Guidance


  • Angiography systems use x-rays to allow visualization of the vasculature in order to aid in the assessment of potential conditions and to provide guidance during interventional procedures.
  • The AlluraClarity interventional x-ray systems add new image processing software to the Allura Xper series of systems. Like the Xper systems, AlluraClarity models are intended for a range of cardiac and vascular interventions. As a single-plane, ceiling-mounted system, the AlluraClarity FD20 is intended for use in hybrid OR, cardiac catheterization, EP, and both therapeutic and diagnostic interventional radiology/vascular applications.
  • The AlluraClarity FD20 ceiling-mounted system is not indicated for any supplementary uses.
  • Major device components and software features
    • X-ray generator: The system uses a 100 kW high-frequency Certeray generator.
    • Detector: The FD20 detector is a 16-bit, 20-inch detector (measured diagonally). It produces a digital image readout. In addition to its full field of view at 48 cm (diagonally), it has seven zoom fields that range from 42 cm down to 16 cm (square format).
    • X-ray tube: The MRC-GS 0407 is an oil-cooled x-ray tube featuring two focal spot sizes, SpectraBeam filters (with copper equivalence), and grid-switched pulsed fluoroscopy.
      • Focal spots are not automatically switched, but instead automatically selected based on the procedure type.
      • The beam has three levels of copper filtration.
    • C-arm: The C-arm houses the x-ray tube and detector and is mounted to a stand. It also includes a grid that can be removed if unneeded (when imaging pediatric patients).
    • Stand: The ceiling-mounted stand is capable of longitudinal movement, with various automatic positions.
      • The FD20 is available in ceiling- and floor-mounted stands; however, the floor-mounted system is much more limited in its motion.
      • The stand consists of an L-arm and a C-arm that move independently of each other.
    • Patient table: The standard Xper table is height-adjustable and allows for cardiopulmonary resuscitation (CPR). Options are available that add features to the standard table, including:
      • Auto isocenter positioning and store/recall table position
      • Pivot
      • Swivel (includes pivot)
      • Tilt
      • Tilt and cradle
    • Image display: The AlluraClarity FD20 comes standard with 19-inch monitors in the exam room. Philips also offers a monitor suspension for its monitors (up to eight), with the exception of monitors for FlexMove systems due to the special mounting requirements.
    • Exam room user interface: There are different control modules in the exam room that are responsible for different functions of the system:
      • On-Screen Display: The On-Screen Display shows information regarding the acquisition parameters, system geometry, dose, and other settings. It is also displays the Xper ViewPad, which is used to select images and to control other system functions.
      • Xper Module: The Xper Module is used for acquisition parameters, image postprocessing, quantitative analysis, and interventional tools.
      • Xper Imaging Module: The Imaging Module is used for shaping the x-ray beam, changing the field size, and selecting a dose mode.
      • Xper Geometry Module: The Geometry Module is used to control the tabletop motion (float and height adjustment), the source-to-image distance (SID), and other stand geometry.
    • Control room user interface: The Xper Viewing Console is a workflow center in the control room that includes the following components:
      • Xper Review Module: Viewing station for images. Users can review images, change settings like contrast and brightness, and access other image manipulation tools like digital zoom.
      • Xper Data Monitor: Controlled by a keyboard and mouse, this monitor is intended for patient data. Users can view dose information, current exam settings, and geometry positioning.
      • Xper Review Monitor: Black-and-white monitor to view runs and images, access image-processing features, and perform any quantitative analyses.
    • Workstation: Interventional Workspot
    • Operating modes
      • Digital acquisition (DA) and digital subtraction angiography (DSA): The AlluraClarity FD20 can be customized with a "virtually unlimited" amount of acquisition programs.
      • Roadmap Pro: DSA with the additional capability to overlay an unsubtracted roadmap on live fluoroscopy.

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