Principles Of Operation - GE Senographe SecondLook Operator's Manual

GE Healthcare
Revision 1
6-3-8

Principles of Operation

SecondLook uses Computer-Aided Detection (CAD) algorithms to identify suspicious lesions in
mammograms. The GEMS Senographe full-field digital mammography system creates digital
mammographic images that are input to SecondLook, and these CAD algorithms use advanced image
processing, feature computations, and pattern recognition technology to analyze the images for potential
areas of concern. These potential areas of concern are displayed for the radiologist by overlying CAD
marks at the appropriate locations of the GEMS Senographe full-field digital mammography images
within the softcopy review workstation or on a paper printout. The CAD marks are used by the
radiologist as an additional tool in breast cancer detection.
An overview of the SecondLook CAD algorithms is shown in
Illustration 1 SecondLook CAD Algorithms Overview
Standard
Mammography
Images
MicroCalc
Algorithm
Calc Image
Enhancement
MicroCalc
Detector
Clustering
MicroCalc
Classifier
Context Based
Patient Evaluation
Areas of Concern
Highlighted by
CAD Marks
Page no. 34
Senographe SecondLook Digital CAD System
Operator Manual 5189820-5-C-1EN
Illustration 1
.
Density
Algorithm
Density Image
Enhancement
Density
Detector
Region
Growing
Density
Classifier
CAD.fm