A new study shows that scanning the arteries in the heart for calcium deposits can help in predicting cardiac problems. The scanning is done using computed tomography and it costs $300 to $600. The scan may prove to be a competitor for less expensive tests, such as blood cholesterol and blood pressure readings.

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According to British researchers, changes in blood flow within the brain in low-grade gliomas detected by MRI technology can help predict the occurrence of malignant brain tumors. Adam D. Waldman, Imaging Research Director at Imperial College National Health Service Trust in London, says that the treatment of low-grade gliomas has been controversial because the therapeutic options are not curative and the suspected patients are young and clinically well at the time of treatment.