Respiratory imaging firm 4DMedical (ASX:4DX) has completed its oversubscribed $25M securities purchase plan (SPP), which followed a $20M placement in May.

The company said it plans to use the $45M raised by the SPP and the placement to hasten the commercial launch of its 4D respiratory imaging software and strengthen its balance sheet.

It also said the SPP was oversubscribed by $10M and, after costs, leaves 4DMedical with a cash balance of $79.6M on a proforma basis.

Shares of 4Dmedical are up 81% the past six months.