RSNA2013 アクセプトされました

Submission Type: Education Exhibits

Quantification of Movement of Lung Parenchyma using Dynamic Respiratory CT

This presentation covers the following topics:
1. Quantification of movement of lung parenchyma using dynamic respiratory CT and voxel tracking method.
2. Usefulness of 4D registration method in low dose intermittent scanning.

CONTENT ORGANIZATION
1. 320-row ADCT scan protocols
2. 4D registration method (voxel-to-voxel mapping). The voxel-to-voxel mapping enables the employment of additional algorithms that reduce noise, improve motion coherence, and measure kinetic function (moving direction, velocity, acceleration, etc.).
3. Phantom study. Pig raw lungs were used. Accurate measurement of bronchi can be obtained by dynamic MPR and dynamic CPR.
4. Clinical study. Chest wall adhesion/invasion of lung cancer, COPD, and IPF. The kinetic parametric map overlaid on the volume rendered images can be manipulated while in motion.
 
SUMMARY
Dynamic respiratory motion imaging using 320-row ADCT is a respiratory functional imaging that can be clinically applied to many pulmonary diseases.  And, techniques of quantify respiratory kinetics have been developed.