2005大脑表面模型膨胀的初步研究.pdfVIP

2005 2 1 6 C hin J M ed Imagin g T echnol, 2005, V ol 2 1, N o 6 963 Brain surface inflating: a pilot study * MA L ing, L UO Shuqian , ZH OU Guohong (B iomedical Eng ineering I nstitute , Ca ital University of M edical Sciences, Beij ing 100054, China) [Abstract] Objective T o obtain a spher ical brain surf ace fro m an irr egular br ain surf ace u sing coo rdinate tr ansfo rm . Meth ods A br ain surf ace w as obtained via thr ee dimensional ( 3D render ing of a set o f seg ment ed magnetic resonance imag e ( M RI of br ain , then t riang ular mesh generation of the brain surf ace w as implemented, and the co or dinates o f mesh no des w er e transformed and str et ched accor ding to the mapping o f o rthog onal coo rdinates and spher ical coo rdinat es . At last the mapping function on distance and g ra y had also been constructed. Results An inflat ed spher ical brain surf ace u sing coo rdi nate tr ansfor m w as o bta ined . Conclusion T he spher ical br ain surf ace pr eser ves t he topolog y of the o riginal brain cor tex, sulci and g yr i can be seen clear ly . T his method can be benef icial t o locate and analy ze the functio nal r egion of the brain in functio nal magnetic r eso nance image ( f M RI . [Key words] Brain sur f ace; Inflate; Or thogo nal coo rdinates; Spher ical coo rdinates * 马 凌, 罗述谦 , 周果宏 ( , 100054 [ ] , T 1WI , , , ; , , , , , ( f M R I [ ] ; ; ; [ ] T P391 [ ] A [ ] 100332 89( 2005 ( , 360 [ 1] , , ,