A new miniature x-ray source for interstitial radiosurgery: device description.

M Dinsmore; K J Harte; A P Sliski; D O Smith; P M Nomikos; M J Dalterio; A J Boom; W F Leonard; P E Oettinger; J C Yanch

doi:10.1118/1.597790

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PubMed · 8700032

A new miniature x-ray source for interstitial radiosurgery: device description.

M Dinsmore·K J Harte·A P Sliski·D O Smith·P M Nomikos·M J Dalterio·A J Boom·W F Leonard·P E Oettinger·J C Yanch

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Abstract

A device that generates low-energy x rays at the tip of a needle-like probe was developed for stereotactic interstitial radiosurgery. Electrons from a small thermionic gun are accelerated to a final energy of up to 40 keV and directed along a 3 mm outside diameter drift tube to a thin Au target, where the beam size is approximately 0.3 mm. All high-voltage electronics are in the probe housing, connected by low-voltage cable to a battery-operated control box. X-ray output, which is nearly isotropic, consists of a bremsstrahlung spectrum and several lines between 7 and 14 keV, with characteristic radiation contributing 15% of the total energy output. To date, 14 patients with metastatic brain tumors have been treated with this device.

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Biophysical Phenomena Biophysics Electronics, Medical Equipment Design Humans Miniaturization Radiosurgery Technology, Radiologic Journal Article

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M Dinsmore, K J Harte, A P Sliski, D O Smith, P M Nomikos, M J Dalterio, A J Boom, W F Leonard, P E Oettinger, J C Yanch. 1996. A new miniature x-ray source for interstitial radiosurgery: device description.. https://doi.org/10.1118/1.597790

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