Early neurological complications after stereotactic radiosurgery/radiotherapy.

Objective: To evaluate the neurological complications after stereotactic radiosurgery (SRS) and stereotactic radiotherapy (SRT).

Material And Method: The Ramathibodi Radiosurgery Unit started its service in August 1997, using the linear-accelerator based system. There were 144 patients treated from August 1997 to October 1999.

Prognostic factors among 130 patients with osteosarcoma.

One hundred thirty patients with high grade osteosarcoma were enrolled in a randomized prospective multidisciplinary treatment that included intraarterial chemotherapy, local irradiation, limb salvage surgery, and prophylactic whole lung irradiation. The patients were evaluated to stage the prognostic factors. In a multivariate analysis, a minimal level of serum lactic acid dehydrogenase less than 300 IU/L showed a significant prognostic value.

Medical physics is alive and well and growing in South East Asia.

In recent years there has been a significant economic growth in South East Asia, along with it a concurrent development of medical physics. The status of four countries--Malaysia, Thailand, the Philippines and Indonesia are presented. Medical physicists in these countries have been experiencing the usual problems of lack of recognition, low salaries, and insufficient facilities for education and training opportunities.