SUBSIDIARIES OF THE REGISTRANT NAME OF SUBSIDIARY STATE OF INCORPORATION - ------------------ ---------------------- InSight Health Corp. Delaware Radiosurgery Centers, Inc. Delaware Maxum Health Corp. Delaware Maxum Health Services Corp. Delaware Diagnostic Solutions Corp. Delaware Maxum Health Services of North Texas, Inc. Texas Maxum Health Services of Dallas, Inc. Texas NDDC, Inc. Texas Open MRI, Inc. Delaware Signal Medical Services, Inc. Delaware