| 摘要 |
Sphericity of a structure can be determined using the technology described herein. A system for determining sphericity can include a computer processor configured to compute a covariance matrix for a three dimensional model of a structure. The processor can be configured to calculate a sphericity of the structure using the covariance matrix and a long-axis vector associated with a long axis of the modeled structure. In certain embodiments, the processor can be configured to compute the sphericity as a ratio between a determinant of the covariance matrix and a cubed extent of the model in the long-axis direction. Certain embodiments can include an imaging device, such as an ultrasound scanner, for example, configured to capture an image of the structure and obtain a model of the structure. Certain embodiments can include a user interface configured to allow a user to identify the long axis of the modeled structure. |
