The idea that assessment is intrinsic to effective instruction is traced from early experiments in the individualization of learning through the work of Benjamin Bloom to reviews of the impact of feedback on learners in classrooms.
Incidental hypervascular lesions are also very common findings in liver imaging. It is important to differentiate between 'touch' and 'don't touch' lesions. Benign 'don't touch' hypervascular tumors include hemangioma, FNH and small adenomas.
Transient monocular visual loss is often referred to as amaurosis fugax, irrespective of the cause. However, it is more accurate to reserve the term amaurosis fugax for episodes of transient monocular blindness resulting from ischemia.A vertebrobasilar disturbance may cause a visual transient ischemic attack (TIA).