Please click here to obtain permission to reproduce this image.
Click on image to view larger version.
Figure 1 (Left) Isodose contour rate map and radiation source train. Isodose rate contour map at a depth of 1.89 mm (10 mGy/s contour intervals) as described by National Institute of Standards and Technology. This depth (1.89 mm) illustrates an isodose model resembling the radius of the coronary artery wall. The longitudinal dose falloff may be extrapolated from this graphic. The central part of the source train (26 mm) radiates approximately full dose constituting the effective irradiation length (EIRL). (Right) A diagram of an irradiated coronary artery and the anatomical and dose-based segment definition. EIRS = effective irradiated segment; INS = injured segment; IRS = irradiated segment; IRL = irradiation length; SB = side branch; VS = vessel segment.
|
