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It involves threading a catheter through the thigh’s femoral artery, behind the heart through the carotid artery and into the skull.

In 2018 in Montgomery, Alabama, an officer unleashed his police dog on a burglary suspect without warning, severing the Black man’s femoral artery and killing him.

A post-mortem examination gave the cause of death as a stab wound to the right groin femoral artery.

The femoral artery is a large blood vessel in the thigh that delivers blood to lower limbs.

In the hospital’s angiography suite, a neuroradiologist, guided by X-ray imaging, pierced Walterson’s femoral artery at the top of his inner thigh and threaded a microcatheter through his body, northbound to the brain.