1 Division of Radiological Sciences, Department of Vascular and Interventional Radiology, Singapore General Hospital, Block 2 Level 1, Outram Road, Singapore, 169608, Singapore. farah.gillan.irani@singhealth.com.sg.
2 Division of Radiological Sciences, Department of Vascular and Interventional Radiology, Singapore General Hospital, Block 2 Level 1, Outram Road, Singapore, 169608, Singapore.