Method and apparatus for measuring a intracorporal passage image

A The medical measuring apparatus for measuring a lumen of an intracorporeal passage, as the passage appears in an image, said medical measuring apparatus comprising:

• a measuring adjunct including
• a first geometric figure outline having a border formed by a portion of said measuring adjunct such that an aperture having a geometric shape is defined for measuring the lumen of the intracorporeal passage;
• a second geometric figure outline having a border formed by a portion of said measuring adjunct such that a circular-shaped aperture is defined for measuring a cross-section of the image of the intracorporeal passage;
• a measurement specification corresponding to said first geometric figure outline and said second geometric figure outline;
• wherein said medical measurina apparatus is manufactured of a radio-opague material selected from the group consisting of brass, steel, copper, metal alloys, and polymers, doped with boron;
• and
• an object to image height adjustment retainer for the measuring adjunct, said object to image height adjustment retainer having calibrated height adjustment means for selecting the height of the measuring adjunct to compensate for a magnification ratio relating to the intracorporeal passage and the intracorporeal passage as it appears in the image.