Each patient will have 4 MR exams: prior to or within one week of the start of the chemotherapy regimen, one after 6 weeks of chemotherapy, a third after completion of chemotherapy (between 12 and 24 weeks post-initiation of chemotherapy) and a long term followup study at least 4 months after the completion of chemotherapy. Normal volunteers will be recruited and studied by MR for comparison to patient data.