S Suppiah1, K Rahmat2, F I Rozalli3, C A Azlan3. 1. University of Malaya Research Imaging Centre, University Malaya, Kuala Lumpur, Malaysia; Universiti Putra Malaysia, Malaysia. 2. University of Malaya Research Imaging Centre, University Malaya, Kuala Lumpur, Malaysia. Electronic address: katt_xr2000@yahoo.com. 3. University of Malaya Research Imaging Centre, University Malaya, Kuala Lumpur, Malaysia.