3D Visualization of X-ray Tomosynthesis Digital Mammography Data: Preference Study

A 3D visualization preference study was conducted on digital mammography tomosynthesis datasets. Two volume rendering [VR] techniques were used in the preference study, the Maximum Intensity Projection [MIP] and the Composite Ray Casting [CRC]. These techniques were presented side by side to experts in the field of digital mammography on dual high resolution monitors. The two techniques were presented using each of three different modes, the thick slice VR, tumbling along the azimuth direction, and tumbling along the elevation direction. Several phantoms and mastectomy specimens were imaged and reconstructed for this study. The experts ranked MIP higher than CRC, and tumbling along the elevation direction was selected as the best mode. In addition, the experts indicated that the MIP technique is better in displaying microcalcifications, and the CRC technique is better in showing masses.