In using magnetic resonance imaging (MRI) to stage nonsmall cell carcinoma of the lung, which……

In using magnetic resonance imaging (MRI) to stage nonsmall cell carcinoma of the lung, which of the following are true?
a) Lymph node metastases in the aorto-pulmonary window are better evaluated with CT than MRI
b) T2-weighted images are most useful in the assessment of chest wall invasion
c) MRI h. the best modality to assess superior sulcus tumours
d) CT is superior to MRI in the assessment of mediastinal invasion
e) MRI signal characteristics allow discrimination between normal and infiltrated lymph nodes