SEGMENTACIJA SLIK Avtorica Eva Rebec Mentor Andrej Studen
SEGMENTACIJA SLIK Avtorica: Eva Rebec Mentor: Andrej Studen
Kdaj pride na vrsto segmentacija? • Določitev ROI Simulirana PET segmentacija [2]
Ročna segmentacija Uporabniška odvisnost [2]
Avtomatske in polavtomatske • Mešane in pragovne metode • Gradientno usmerejene metode Gradientne metode [5] Pragovne metode [4]
• Povečevanje regije • Statstične metode • Naučene in tekstrurno usmerejene metode machine learning (training+testing): ATLAAS metoda- izbere najbolj optimalno metodo Povečevanje regije [6]
Segmentacija multimodalnih slik • Prednosti: dopolnjevanje diagnoze • Slabosti: nevidne lezije na drugi sliki, dodatni artefakti, misregitracija med slikami, motnje zaradi dihanja. . . Segmentacja multimodalne slike [1]
primerjava [2]
LITERATURA • [1]Mathieu Hatt, John A. Lee, Charles R. Schmidtlein, Issam El Naqa, Curtis Caldwell, Elisabetta De Bernardi, Wei Lu, Xavier Geets and Vincent Gregoire, Robert Jeraj, Michael P. Mac. Manus, Osama R. Mawlaw, Ursula Nestle, Andrei B. Pugachev, Heiko Schoder , Tony Shepher, Emiliano Spezi, Dimitris Visvikis, Habib Zaidi. Classification and evaluation strategies of auto-segmentation approaches for PET. Medical Physics (2017) • [2]Habib Zaidi & Issam El Naqa. PET-guided delineation of radiation therapy treatment volumes: a survey of image segmentation techniques. Eur J Nucl Med Mol Imaging(2010. ) 37: 2165 -2187. • [3]M. A. Balafar , A. R. Ramli, M. I. Saripan , S. Mashohor. Review of brain MRI image segmentation methods. Artif Intell Rev (2010) 33: 261– 274 • [4] Slobodan Devic. Towards Biological Target Volumes Definition for Radiotherapy Treatment Planning: Quo Vadis PET/CT? Journal of Nuclear Medicine & Radiation Therapy (2013) • [5]Graves, Quon, Loo. RT_Image: An Open-Source Tool for Investigating PET in Radiation Oncology. Technology in cancer research & treatment (2017) • [6] Marshall. Region Growing (https: //users. cf. ac. uk/Dave. Marshall/Vision_lecture/node 35. html) (12. 6. 2017)
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