Comment on "Image-guided patient positioning: if one cannot correct for rotational offsets in external-beam radiotherapy setup, how should rotational offsets be managed?" [Med. Phys. 34, 1880-1883 (2007)].

Comment on "Image-guided patient positioning: if one cannot correct for rotational offsets in external-beam radiotherapy setup, how should rotational offsets be managed?" [Med. Phys. 34, 1880-1883 (2007)].