I've read the abstract. How do you explain that US is less sensitive but more specific than MRI in local staging of rectal cancer? I agree in full about the need of specific training (this rule is always true!), although the differences in MRI performances seem less understandable.
Article Transrectal ultrasonography and magnetic resonance imaging i...
The transrectal ultrasonography (TRUS) has high resolution and can accurately identify the commitment layer of the rectal wall . Thus, it is expected that TRUS has higher specificity (83% ) compared to MRI (74 %), which is shown in the article for the skilled reader.
Honestly, greater sensitivity of 96 % (MRI ) versus 93 % (USTR ) might be only numeric, not significant from a statistical point of view. Besides, the authors consider in the article the differences between the readers, not the difference between the methods, by specialist reader .
Personally , I like TRUS for initial staging lesions only, because it allows better decision making, mainly when less agressive therapy can be performed.
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