Two medical imaging techniques, called positron emission tomography (PET) and computed tomography (CT), could be used in combination as a biomarker to predict the effectiveness of antibiotic drug regimens being tested to treat tuberculosis (TB) patients, according to researchers at the National Institute of Allergy and Infectious Diseases, part of the National Institutes of Health.

With multidrug-resistant tuberculosis (MDR-TB) and extensively drug-resistant tuberculosis (XDR-TB) on the rise worldwide, new biomarkers are needed to determine whether a particular TB drug regimen is effective.