Prostate segmentation and surface reconstruction
This page contains instructions on how to perform MRI prostate segmentation and surface reconstruction in MIPAV. The algorithm facilities the validation of multi-parametric MRI with histopathology slides from radical prostatectomy specimens and targeted biopsy specimens. It employs the technique that combines image processing and computer aided design to construct a high resolution 3D prostate surface from MRI images in three orthogonal views with non-isotropic voxel resolution.
The algorithm includes 3 major steps:
- Semi-automatic B-Spline Automatic Registration
- Ball-pivoting and Poisson based 3D surface reconstruction
- 3D printing for prostate mold
The algorithm outline is shown below (TBD).
Image types
The algorithm could be applied to the following image types (TBD).
A sample image dataset can be downloaded using this link (TBD). The input data included into the data set are MR images obtained from a 3.0 T whole-body MRI system (Achieva, Philips Healthcare).
T2-weighted MR images of the entire prostate were obtained in three orthogonal planes (sagittal, axial and coronal) at the
- Scan resolution of 0.2734x0.2734x3.0 cubic millimeters,
- Field of view 140 mm,
- Image slice dimension 512x512.
The center of the prostate is the focal point for the MRI scan. To reduce the scan time, a lower refocusing pulse of 100 degrees was used for sagittal and coronal images, which alters the contrast on these images compared to the axial images.