As technology continues to advance for all diagnostic imaging modalities, it sometimes reminds me of a race between vendors to build a better mouse trap. The main issue between cardiac echo, computed tomography (CT), magnetic resonance imaging (MRI), nuclear (SPECT and PET) and invasive angiography is that each has its strengths and weaknesses. When one test falls short, another is used to add diagnostic information, but it also adds time and cost.
