TFCA	Transfemoral cerebral angiography
KAP	Kerma area product
DICOM RDSR	Digital imaging and communication in medicine radiation dose structured report
ICRP	International Commission on Radiological Protection
ALARA	As low as reasonably achievable
PACS	Picture archiving and communication system
AP	Anteroposterior
CCA	Cranial caudal angle
K	Conversion factor
E	Effective dose
LLE	Loss of life expectancy
REID	Radiation-associated risk of exposure-induced death