To the Editor: Dr Antoch and colleagues1 reported that combined whole-body positron emission tomography and computed tomography (PET/CT) had greater diagnostic accuracy for cancer staging than did whole-body magnetic resonance imaging (MRI). I believe, however, that the authors' use of the term whole body is misleading, as their axial scanning range for both PET/CT and MRI did not appear to examine the brain, skull, or lower extremities. Lung cancer, for instance, commonly metastasizes to the brain. Furthermore, contrast-enhanced MRI has been reported to have higher sensitivity and specificity for brain metastases than PET.2 Although true whole-body PET requires additional time for image acquisition, it may provide a more accurate staging.
Financial Disclosure: Dr Osman has received honoraria from Petnet Pharmaceuticals and Shared Medical Services.
Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature
Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal
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