AXIOM Artis AXA4-100.620.08.01.02 43 / 104
Quantification
Quantitative Vascular Analysis (QCA, QVA)
Starting vascular analysis
Selecting a scene/image
u Load a suitable scene from the Patient Browser onto the Quant task card by
drag-and-drop or a double click.
➩ Part Image Viewing and Image Processing, Chapter General, “Loading a
scene/image”
The selected image plays an important role in accurate and reproducible contour
detection.
We recommend selecting an image close to the diastolic phase of the cardiac cy-
cle. The vessel moves only minimally in this cardiac phase, so that the changes
of the display size are negligible and reproducibility of the detected contour is
guaranteed. Changes in contour due to the rotation of an asymmetrical artery are
also insignificant in this phase. In addition, possible kinetic blurring because of the
length of the X-ray pulse is minimal in the diastolic phase. This ensures improved
image quality and, consequently, more accurate contour detection.
u Scroll through the scene to the required image.
➩ Chapter General, “Switching over the IS joystick function” and Part Image
Viewing and Image Processing, Chapter Managing and Viewing Scenes/
Images
Comments to this Manuals