Transrectal ultrasound and magnetic resonance imaging measurement of extramural tumor spread in rectal cancer

Figure 1 Plot graph showing agreement on depth of extramural tumor spread in mm. The x-axis represents the distance measured by transrectal ultrasound (TRUS) and the magnetic resonance imaging (MRI) results are shown on the y-axis. Correlation coefficient = 0.90.

Figure 2 Early T3 rectal tumor on both transrectal ultrasound (A) and axial magnetic resonance imaging image (B). The maximal outgrowth (arrow) was 2 mm using both methods.

Figure 3 Transrectal ultrasound (A) and axial magnetic resonance imaging images (B) of a patient showing an advanced T3 rectal tumor. The maximal outgrowth on the right side measures 20 mm equally on transrectal ultrasound and axial magnetic resonance imaging.