A battery-powered electromagnetic (EM) system has been developed to measure
topographical features of the trunks of patients with scoliosis, The syste
m includes an EM measurement system and a data acquisition system. The syst
em resolution and accuracy are 0.25 cm in the range of 15-30 cm. The entire
system can be Carried by scoliotic patients during daily activities. The d
imensions of the system are 10 cm x 14 cm x 4 cm and its weight is 100 g, A
patient's posture can be evaluated in real time so that appropriate feedba
ck can be provided to correct his/her posture.