Original Leksell gamma unit after relocation to UCLA Medical Center.
Elekta Gamma Knife collimation system diagram (from US Patent office application).
Diagram of the first linac radiosurgery system of Betti and Derechinsky based on Talairach stereotactic system (from US Patent office application).
Derechinsky stereotactic fixation frame for linac based delivery (from US Patent office application).
Ervin Podgorsak, right, at the beginning of the McGill radiosurgery program in 1987 with two visitors from Elekta; Juergen Arndt; left, and Dan Leksell, centre, clinical director at Elekta and son of Lars Leksell.
Medical physicist Wendell Lutz performing a phantom measurement with his linac based system at the Jojnt Center (undated photo from W. Lutz).
Hamilton and Lulu spinal immobilization device (from US Patent office application).
Stereotactic radiosurgery: Historic landmark events.
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