Scoring of investigations
DISEASE
MTO and AVS graded 67/128 (52%) and 58/128 (45%) patients, respectively, as having a high probability of unilateral PA (indicating surgery). MTO and AVS were concordant in the diagnosis of unilateral disease in 39/128 (30%) patients, whereas 47/128 patients (37%) were diagnosed by one of MTO or AVS alone (Fig. 