SMC Networks 500082, HNC-63-INT manual SNR Calulations Example

Page 19

Rev 05

SNR Calulations

Example

1.Select the reconstructed image from Channel 2, and display an eliptical ROI with a total pixel area of 1300 mm squared. Refer to Philips Gyroscan Intera Instructions Manual for ROI help.

2.Position ROI in the center of the phantom bottle, as shown below.

3.Bring up the Statistics for ROI, right-mouse select over the ROI number (arbitrary number next to the ROI), left-mouse select on Statistics from the drop- down box, and select Statistics again from drop box.

4.Record the Signal Mean value.

5.Move ROI to background noise as shown below.

6.Record the noise standard deviation.

7.Divide the signal mean by the noise standard deviation.

8.Record this SNR value for future reference.

9.Spec > 50.

19

Page 18 Page 20
Image 19
Page 18 Page 20
Contents Rev Licenses and Trademarks Compatibility IntroductionGrasphere HNC Neurovascular Array CoilTable of Contents Precautions Patient SafetyTraining Quality Assurance Indications Contra- indications Emergency Procedures Technical Considerations Positioning the HNC-63-INT Coil on the Patient Table Array CoilPositioning Patient Synergy MultiConnect SMC Connecting Cable Right Side Patient Interface Control Unit Picu Left Side Patient Interface Control Unit PicuQuality Assurance MTC Rev Save raw data Yes Rev SNR Calulations Example SNR Calulations SNR Calulations Example SNR Calulations Head and Neck Imaging Selecting the Active Coil Scanning Set UpScanning Step by Step Scan Protocols Storage CleaningRev
Top Page Image Contents