1. Extracting VOIs from brain PET images
- Author
-
Martti Juhola, Jouni M. Mykkänen, and Ulla Ruotsalainen
- Subjects
Fluorine Radioisotopes ,Volume of interest ,Computer science ,media_common.quotation_subject ,Health Informatics ,Image processing ,computer.software_genre ,Positron ,Region of interest ,Image Processing, Computer-Assisted ,medicine ,Humans ,Contrast (vision) ,Computer vision ,media_common ,medicine.diagnostic_test ,Phantoms, Imaging ,business.industry ,Corpus Striatum ,Dihydroxyphenylalanine ,Information extraction ,Positron emission tomography ,Artificial intelligence ,Nuclear medicine ,business ,computer ,Algorithms ,Software ,Tomography, Emission-Computed - Abstract
A semi-automatic system for determining volumes of interest (VOI) from positron emission tomography (PET) scans of brain is described. The VOIs surface extraction is based on user selectable threshold and three-dimensional target flood-fill. Contrast to anatomical volume detection approaches, volumes are determined from functional PET images and the obtained objects are checked against anatomical images. The developed VOI program was evaluated with brain FDOPA-PET studies where the striatum was the object. The results were comparable to entirely manual method and the target extraction time is reduced to about one third of manual method.
- Published
- 2000