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Fig. 5 —45-year-old man (height, 1.73 m; weight, 89 kg; BMI, 29.74) with left-sided flank pain. Standard-dose 6-MDCT examination at mean effective tube current of 79 mAs and calculated effective dose of 5.16 mSv. Coronal 5-mm image shows 2-mm ureteral stone (arrow) at intersection of ureter and iliac vessels that led to false-negative finding of small calcified atheromatous plaque.