Analisis Perbedaan Informasi Citra Anatomi pada Pemeriksaan Magnetic Resonance Cholangiopancreatography (MRCP) dengan Menggunakan Teknik Parallel Imaging GRAPPA dan Compressed Sensing

Abstract

Background: Magnetic Resonance Cholangiopancreatography (MRCP) is a non-invasive diagnostic examination used to evaluate the biliary system. MRCP examinations have a long acquisition time, which reduces image quality due to respiratory artifacts. Parallel imaging techniques such as GRAPPA and compressed sensing (CS) are methods used to accelerate acquisition time. This study aims to analyze the differences in anatomical image information between using GRAPPA and CS in MRCP examinations triggered by respiratory trigger techniques.

Methods: This study used a quantitative research method with an experimental approach and a static design with a control group. The samples used were 16 MRCP patients in the T2 SPACE Coronal Trigger Iso sequence using GRAPPA and CS. The results were obtained based on the assessment of anatomical image information by two radiologists including Hepatic Ductus, Common Bile Ductus (CBD) and Cystic Ductus. Data analysis was performed using the Wilcoxon test to determine differences in anatomical image information between MRCP examinations using GRAPPA and CS.

Results: The results showed significant differences in anatomical image information between GRAPPA and CS in the anatomy studied, with a p-value < 0.05.  Analysis of anatomical image information showed that CS provided better image results, with clear anatomical structures, sharp boundaries, high contrast, darker background, lower noise levels, and faster acquisition times.

Conclusions: The conclusion of this study is that there is a significant difference in anatomical image information between using GRAPPA and CS. The CS technique produces better images in MRCP examinations.