The origin of cosmic rays (CRs) has been an outstanding problem in physics since their discovery. There is a strong case to be made for CR production in supernova remnants (SNRs) because: i) maintaining the energy density of CRs requires a supply of energy that can easily be provided by SNRs; ii) relativistic particle acceleration must take place in SNRs because we observe the synchrotron radiation from the electrons; and iii) SNR ejecta are rich in heavy elements as are CRs. However despite the qualitative evidence, CR production and shock acceleration processes in SNRs remain poorly understood. Two observational diagnostics are available which may shed light on this long-standing problem: spectral imaging and integrated spectrum studies.