The first introduction to the use of radial<unk>  for cardiac<unk>  was made by Radner in 1948.
Subsequently, a Canadian Cardiologist, Lucian Campeau, in 1989 re-introduced the practice. There have been a gradual increase in its preference over the femoral approach internationally; with United States experiencing a 10-fold increase (1 in every 6 PCIs performed) in the adoption of transradial procedures between 2007 and 2012, largely as a result of reduced major bleeding, vascular complications, length of hospital stay and cost, and increased patient satisfaction and quality of care.
The rationale for the choice of radial access include:
Decreased risk of limb ischemia - The hand has a dual<unk> al supply i.e., radial and ulnar<unk> es, which unites to form the superficial and deep palmer arches.  Therefore, the radial<unk>  is not an end<unk>  like the femoral<unk> , thus decreasing the risk of<unk> al occlusion post PCI.
Decreased risk of bleeding - The superficial course of the distal radial<unk>  allows for easy compressibility in order to minimize hemorrhage post PCI.
Radial artery cathetarization
Wrist drop MRI
Varicose veins ultrasound
Radial catheterization allen's test
Intravascular ultrasound
Impedance phlebography
Peripheral arterial disease CT
Peripheral arterial disease ultrasound