The Society of Interventional Radiology (SIR) is the premier professional organization representing interventional radiologists worldwide. With a legacy of excellence spanning decades, we are dedicated to advancing the practice of interventional radiology and enhancing patient care.

The meaning of SIR is a man entitled to be addressed as sir —used as a title before the given name of a knight or baronet and formerly sometimes before the given name of a priest.

Watch the Australian indie pop duo perform The Cranberrie’s Linger live at SiriusXM. Hear what’s hot, new, and trending straight from the artists, hosts, and influencers you love to follow. Hear feisty takes from one of sports talk radio’s biggest personalities.

سير تيفي مشاهدة مباريات اليوم بث مباشر جوال Sir TV شاهد أهم الأحداث الرياضية لايف والنتائج المباشرة والمباريات الآن بث مباشر Sir TV Live.

SIR. acknowledges the Gadigal People of the Eora Nation as the Traditional Custodians of the land where we come together each day. We pay our respects to elders past, present and emerging, extending our acknowledgement to all Indigenous Australians as the traditional owners of country.

sir (plural sirs) A man of a higher rank or position. A respectful term of address to a man of higher rank or position, particularly: quotations

Sir is used at the beginning of a formal letter to a man you do not know: Dear Sir