Background: Anterior Cruciate Ligament (ACL) and Posterior Cruciate Ligament (PCL) must be visible for radiologists when performing Magnetic Resonance Imaging (MRI). One of the sequences used to reveal ACL and PCL is T2WI FSE sequence with Proton Density Fat Saturation. The difference  sequence will result in different image quality.

Objective: The aim of the research is to find the difference anatomy information between T2WI FSE sequence and Proton Density Fat Saturation on sagittal slice and to identify what sequence is better to reveal ACL and PCL anatomy.

Methods:  This research is experimental queasy. Data consists of 20 images from knee joint MRI sagittal slices from 10 volunteers with two variation procedures: T2WI FSE and Proton Density Fat Saturation. 20 pictures of  ACL and PCL anatomy were reviewed by three experienced radiologists in MRI. Data were analyzed with  Wilcoxon test.

Results: The result of this research is showing the difference of anatomy information between T2WI FSE sequence with Proton Density Fat Saturation on MRI examination for Knee Joint sagittal slices.The result indicates that the mean rank value of  T2WI FSE sequence (4.50) is better than Proton Density Fat Saturation sequence (0.000).

Conclusion: Since there is a different anatomy information between the two sequences on  MRI knee joint sagittal slices, the  T2WI FSE sequence is recommended for showing anatomy information of ACL and PCL.

Keyword: Knee Joint, T2WI FSE, Proton Density Fat Saturation, Anterior Cruciate Ligament (ACL) dan Posterior Cruciate Ligament (PCL).