Interstitial X-ray needle

Details Interstitial X-ray needle Interstitial X-ray needle

1992-03-23

1992-11-17

Howell, Janice A.

X-ray or gamma ray systems or devices

Source

Electron tube

378130, 378199, 378202, H01J 3514

Patent

active

051650932

ABSTRACT:
An interstitial X-ray needle includes an elongated X-ray tube coupled to an electron emitter at one end of the tube, with a converter element being disposed at a tip of the other end of the tube for converting emitted electrons into X-ray; a solenoid coil wound around the tube for providing a magnetic field that confines the emitted electrons within a narrow beam; an elongated outer casing enclosing the tube and coil; and a pipe coaxially disposed between the casing and the tube for defining an inner annular flow chamber between the tip of the tube and a coolant inlet in the casing and an outer annular flow chamber between the tip of the tube and a coolant outlet in the casing.

REFERENCES:
patent: 2651727 (1953-09-01), Ehrenberg et al.
patent: 2748293 (1956-05-01), Reiniger
patent: 3609432 (1971-09-01), Shimula
patent: 3668454 (1972-06-01), Shimura
patent: 3783251 (1974-01-01), Pavkovich
patent: 3969629 (1976-07-01), McIntyre
patent: 4157475 (1979-06-01), Stock et al.
patent: 4409993 (1983-10-01), Furihata
patent: 4763671 (1988-08-01), Goffinet
patent: 4825880 (1989-05-01), Stauffer et al.
patent: 4969863 (1990-11-01), van't Hooft et al.
patent: 4993430 (1991-02-01), Shimoyama et al.
patent: 5026959 (1991-06-01), Ito et al.

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