Menu

CAAS EN

CAAS 4D-Flow

Heart 4D flow screen

4D-Flow: Complete assessment of your MR 4D Flow data

Caas MR 4D Flow is specifically designed to extract relevant information from 3D phase-contrast (PC) MR images, within a few clicks. Based on these phase-contrast images, two pioneering 4D Flow modules are offered to perform a complete flow analysis that can aid in reading and interpreting cardiovascular MR images and assist in planning the time and type of an intervention. These two modules include a module to analyze vessels, from the aorta up to smaller vessels in for example the kidneys (Caas MR 4D Artery), and a module to analyze the heart valves in terms of regurgitation fraction (Caas MR 4D Heart).

Key Results

  • Visualization of aortic blood flow as streamlines, pathlines and color-coded vectors
  • Distribution of wall shear stress and local values of wall shear stress
  • Pressure difference over a segment
  • Visualization and quantification of regurgitant fraction over all four valves
  • 2D flow phase-contract analysis

The Wall Shear Stress Analysis and Pressure Difference Analysis are not CE marked and therefore not meant for clinical decision making.

CAAS A-Valve

A-valve screen

CAAS A-Valve: assisting physicians during or in preparation of valve replacements as TAVR procedures.

CAAS A-Valve assists the physician in evaluating aortic regurgitation after transcatheter valve replacement. The qRA workflow (also called videodensitometry, VD-AR, LVOT-AR) enables the physician to quantify valvular and paravalvular regurgitation immediately in the hybrid OR directly after placing the valve. 

Clinical confidence
qRA is extensively validated by the groups of Prof. Patrick Serruys and Prof. Carl Schulz. Validation studies have been performed in:

  • Correlating with clinical endpoints to assess LVOT-AR cut-off value of 0.17 
  • Comparing with MR Flow measurements
  • Comparing with echocardiography measurements
  • Comparing with visual classification of aortic regurgitation
  • Phantom setup

Use in practice
CAAS A-Valve qRA has been used to assess:

  • Acute performance of a novel Xeltis valve in a pre-clinical setting
  • Comparison of seven different TAVR valves

CAAS vFFR

vFFR result screen

CAAS – vFFR, module of CAAS Workstation:
The novel angio-based functional lesion assessment – wire and adenosine free.

The vFFR workflow builds a 3D reconstruction of coronary artery and assesses pressure drop, resulting in a vFFR value. Furthermore, the 3D reconstruction enables assessment of severity and percentage of stenosis.

Functional lesion information

  • Pressure drops in coronary artery
  • vFFR value

Anatomical lesion information

  • Lesion diameter
  • Percentage stenosis
  • Reference diameter
  • Obstruction length