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Figure 3 Color-coded maps of the femoral arterial wall constructed from integrated backscatter (IB) + conventional two-dimensional (2D) echo findings obtained during life based on the five categories of tissue characterization. (Upper) large plaque (arrow). (A1) An IB image at autopsy. (A2) A color-coded map constructed from A1, based on the five IB categories and conventional 2D echo findings. (A3) A histologic finding stained with elastic van Gieson of the same segment as the IB measurement (bar = 1 mm). Note that the color-coded map accurately reflects histology. (Middle) intimal fibrosis (arrow). (B1) An IB image during life. (B2) A color-coded map constructed from B1, based on the five IB categories and conventional 2D echo. (B3) A histologic finding stained with Masson’s trichrome of the same segment as the IB measurement (bar = 1 mm). Note that the color-coded map accurately reflects histology. (Lower) intimal hyperplasia consisting of smooth muscle cells (arrow). (C1) An integrated backscatter image during life. (C2) A color-coded map constructed from C1, based on the five IB categories and conventional 2D echo. (C3) A histologic finding stained with Masson’s trichrome of the same segment as the IB measurement (bar = 1 mm). Note that the color-coded map accurately reflects histology.
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