Philips Azurion - Automatic Calibration; Manual Calibration; Catheter Calibration

• P
osion the calibraon object close to the posion of the anatomy under invesgaon.
• Choose a calibraon object of intermediate size (a few cenmeters) for opmal accuracy.
For LVA/RVA, the use of catheter calibraon is not recommended. Relave errors from calibraon
are mulplied by a factor of up to three when compung (ventricle) volumes.
For manual catheter calibraon, follow these guidelines:
• Use a radiopaque catheter.
• Use a lled catheter to improve detecon.
• Use catheters for calibraon that are at least 6 French. Catheters below 4 French are not supported.
• Ensure that the external catheter size as provided by the manufacturer is accurate.
Ensure that the image quality is good and that the contrast between the calibrang object and the
background is good.
Automac Calibraon
2D-QA can calculate the calibraon factor automacally if the required informaon is available in the
image series.
1 Click the Calibraon task.
The Auto calibraon method is automacally selected if the required informaon is available in the
image series.
2 To accept the calibraon factor, click Accept and Connue.
Manual Calibraon
You can perform manual calibraon using one of the following methods:
• Catheter
• Distance
• Sphere
Catheter Calibraon
You perform catheter calibraon by tracing the centerline of a catheter in the image.
You can perform catheter calibraon on either a straight catheter segment or a curved segment, but
you should always use a non-tapered segment. Using a tapered segment for calibraon will result in
incorrect measurement results.
1 Use the navigaon toolbar to review the series and select an image to be used for calibraon.
NOTE You can change the c
alibraon image at any me by clicking Change in the control panel
and selecng a dierent image.
2 Click the Calibraon task.
3 Click Catheter in the Select calibraon method list.
4 Click Draw in the control panel and do the following:
• Click on the centerline of the catheter at the desired start point.
• Click again to place a point further along the centerline.
• Connue placing points along the centerline, and then double-click at the desired end point.
For addional informaon, click Help in the control panel.
2D Quant
ave Analysis (Opon) LVA / RVA
Azurion Release 1.2 Ins
trucons for Use 169 Philips Healthcare 4522 203 52421