Abstract: This invention relates to a catheter for use in post-mortem angiography and a method for post-mortem in-situ cardiac angiography of a human or animal body. The catheter comprises (a) a proximal end for insertion into a human or animal body, (b) a distal end which remains outside the body during normal use, (c) a tube for delivering an imaging agent to the body, and (d) a marker for insertion into the body, the marker being positioned at a predetermined distance from the proximal end and comprising a substance such that its position once inserted into the body is detectable from outside the body.