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1. (US20060018430) Active dose reduction device and method

특허청 : 미국
출원번호: 10894427 출원일: 20.07.2004
공개번호: 20060018430 공개일: 26.01.2006
특허번호: 7215739 특허부여일: 08.05.2007
공개유형: B2
IPC:
H05G 1/00
H05G 1/54
H SECTION H — 전기
05
달리 분류되지 않는 전기기술
G
X선 기술
1
X선관을 포함하는 X선장치; 그를 위한 회로
H SECTION H — 전기
05
달리 분류되지 않는 전기기술
G
X선 기술
1
X선관을 포함하는 X선장치; 그를 위한 회로
08
전기적 세부(details)
26
측정, 제어, 보호
54
보호
출원인: Communications & Power Industries Canada Inc.
발명자: Cunningham James Allan
Neysmith Peter Francis
우선권 정보 10894427 20.07.2004 US
발명의 명칭: (EN) Active dose reduction device and method
요약서: front page image
(EN)

An active dose radiation device and method decreases the amount of x-rays which may be generated by an x-ray tube following termination of the x-ray exposure. One component of the x-ray system is connected to the device which has a plurality of electronic cells that can be overvoltaged from a first state, where they are less conductive, to a second state, where they are highly conductive. A voltage pulse generator overvoltages a first cell in the plurality of cells at termination of an x-ray exposure. Overvoltaging the first cell causes a cascading effect which eventually overvoltages all of the cells and changes the state of the cells from the first less conductive state to the second highly conductive state. In the second highly conductive state, the cells can conduct current from at least one component of the x-ray system to ground thereby reducing x-rays generated by the x-ray tube and reducing the x-ray dosage from the imaging system after the x-ray exposure has been completed. The plurality of cells automatically reverts to the first state once current passing through the cells decreases below a threshold current level. The plurality of cells are connected to only the anode side 26 or the cathode side 38 of the x-ray imaging device in order to discharge energy from only one side to ground which results in a sufficient decrease in the voltage across the x-ray tube to prevent generation of active dosage of x-rays which may penetrate the patient.


또한로 출판 됨:
EP1774837CN101019471CA2574203WO/2006/007688