Abstract

Aliasing artifact is often occur in MRI Orbits examination on T1 SE Fat Saturation sequence sagittal oblique plan. One of the way to eliminate the aliasing artifact is using phase oversampling (PO). Aims of this research is to know the difference of anatomical information and image quality on T1 SE Fat Saturation pulse sequence sagittal oblique plan, and also to know the optimal variation value of PO to produce the optimal anatomical information and image quality of T1 SE Fat Saturation pulse sequence sagittal oblique plan with variation of PO on Orbits MRI.The type of research is quantitative with experimental approach. Research subject is image MRI Orbits. The sample consist of Orbits MRI image obtained from 10 volunteers. The data collecting do by measure SNR and CNR to get the data of image quality, and then image assessed by research respondents using questionnaire to get the data of anatomical information. The data that has been collected, then analyzed using different test using SPSS.The results showed that there was a significant difference in lens anatomy. There were aliasing artifacts on PO variation of 13%, while PO 52% and 91% had no aliasing artifacts. The anatomy of optic nerve has a clear and strictly defined image in PO of 91% compared to PO of 13% and 52%. The results showed the value of friedman test on Lens anatomy, Muscle rectus superior, and Optic nerve. Significantly with p-value 0.05. That means there are no difference on anatomical information with variation of PO. Furthermore, the result of the research showed that there was difference of image quality (SNR and CNR) to variation of PO with significance value (p