X-ray diagnostic apparatus

Claim 2

An X-ray diagnostic apparatus comprising: X-ray image detecting means, having a fluoroscopy mode and a radiography mode for, in the fluoroscopy mode, radiating fluoroscopic X-rays onto an object being examined so as to detect X-ray fluoroscopic image data of the object being examined, and for, in the radiography mode, radiating radiographic X-rays onto the object being examined so as to detect X-ray radiographic image data of the object being examined, the radiography mode being selected in response to a radiography instruction applied in the fluoroscopy mode; display means for displaying the X-ray fluoroscopic image data obtained by said X-ray image detecting means in the fluoroscopy mode; radiographic image recording means for recording the X-ray radiographic image data obtained by said X-ray image detecting means in the radiography mode; A/D (analog-to-digital) conversion means for converting the X-ray fluoroscopic image data obtained by said X-ray image detecting means in the fluoroscopy mode into a digital signal; and fluoroscopic image storage means for continuously storing a plurality of frames of digital image signals of X-ray fluoroscopic images obtained by said A/D conversion means in correspondence with a period which includes an input timing of the radiography instruction.

Claim 3

An X-ray diagnostic apparatus comprising: X-ray image detecting means, having a fluoroscopy mode and a radiography mode for, in the fluoroscopy mode, radiating fluoroscopic X-rays onto an object being examined so as to detect X-ray fluoroscopic image data of the object being examined, and for, in the radiography mode, radiating radiographic X-rays onto the object being examined so as to detect X-ray radiographic image data of the object being examined, the radiography mode being selected in response to a radiography instruction applied in the fluoroscopy mode; display means for displaying the X-ray fluoroscopic image data obtained by said X-ray image detecting means in the fluoroscopy mode; radiographic image recording means for recording the X-ray radiographic image data obtained by said X-ray image detecting means in the radiography mode; A/D (analog-to-digital) conversion means for converting the X-ray fluoroscopic image data obtained by said X-ray image detecting means in the fluoroscopy mode into a digital signal; and fluoroscopic image storage means for continuously storing at least a plurality of frames of digital image signals of X-ray fluoroscopic images obtained by said A/D conversion means in correspondence with a period which includes an input timing of the radiography instruction, said fluoroscopic image storage means comprising updating storage means for continuously updating and storing a plurality of the most recent frames, and storage control means responsive to the radiography instruction, for interrupting write access to said updating storage means after a predetermined period of time has elapsed from the input timing of the radiography instruction until the fluoroscopic X-rays have stopped.

Claim 4

An X-ray diagnostic apparatus comprising: X-ray image detecting means, having a fluoroscopy mode and a radiography mode for, in the fluoroscopy mode, radiating fluoroscopic X-rays onto an object being examined so as to detect X-ray fluoroscopic image data of the object being examined, and for, in the radiography mode, radiating radiographic X-rays onto the object being examined so as to detect X-ray radiographic image data of the object being examined, the radiography mode being selected in response to a radiography instruction applied in the fluoroscopy mode; display means for displaying the X-ray fluoroscopic image data obtained by said X-ray image detecting means in the fluoroscopy mode; radiographic image recording means for recording the X-ray radiographic image data obtained by said X-ray image detecting means in the radiography mode; A/D (analog-to-digital) conversion means for converting the X-ray fluoroscopic image data obtained by said X-ray image detecting means in the fluoroscopy mode into a digital signal; and fluoroscopic image storage means for continuously storing at least a plurality of frames of digital image signals of X-ray fluoroscopic images obtained by said A/D conversion means in correspondence with a period which includes an input timing of the radiography instruction, said fluoroscopic image storage means comprising updating storage means for continuously updating and storing a plurality of the most recent frames, and storage control means responsive to the radiography instruction, for interrupting write access to said updating storage means after a predetermined period of time has elapsed from the input timing of the radiography instruction until the fluoroscopic X-rays have stopped.

Claim 5

An X-ray diagnostic apparatus comprising: X-ray image detecting means, having a fluoroscopy mode and a radiography mode for, in the fluoroscopy mode, radiating fluoroscopic X-rays onto an object being examined so as to detect X-ray fluoroscopic image data of the object being examined, and for, in the radiography mode, radiating radiographic X-rays onto the object being examined so as to detect X-ray radiographic image data of the object being examined, the radiography mode being selected in response to a radiography instruction applied in the fluoroscopy mode; display means for displaying the X-ray fluoroscopic image data obtained by said X-ray image detecting means in the fluoroscopy mode; radiographic image recording means for recording the X-ray radiographic image data obtained by said X-ray image detecting means in the radiography mode; A/D (analog-to-digital) conversion means for converting the X-ray fluoroscopic image data obtained by said X-ray image detecting means in the fluoroscopy mode into a digital signal; and fluoroscopic image storage means for continuously storing at least a plurality of frames of digital image signals of X-ray fluoroscopic images obtained by said A/D conversion means in correspondence with a period which includes an input timing of the radiography instruction, said fluoroscopic image storage means comprising updating storage means for continuously updating and storing a plurality of the most recent frames, storage control means responsive to the radiography instruction, for interrupting write access to said updating storage means after a predetermined period of time has elapsed from the input timing of the radiography instruction until fluoroscopic X-rays have stopped, and auxiliary storage means for fetching and storing a storage content of said updating storage means.

Claim 6

An X-ray diagnostic apparatus comprising: X-ray image detecting means, having a fluoroscopy mode and a radiography mode for, in the fluoroscopy mode, radiating fluoroscopic X-rays onto an object being examined so as to detect X-ray fluoroscopic image data of the object being examined, and for, in the radiography mode, radiating radiographic X-rays onto the object being examined so as to detect X-ray radiographic image data of the object being examined, the radiography mode being selected in response to a radiography instruction applied in the fluoroscopy mode; display means for displaying the X-ray fluoroscopic image data obtained by said X-ray image detecting means in the fluoroscopy mode; radiographic image recording means for recording the X-ray radiographic image data obtained by said X-ray image detecting means in the radiography mode; A/D (analog-to-digital) conversion means for converting the X-ray fluoroscopic image data obtained by said X-ray image detecting means in the fluoroscopy mode into a digital signal; and fluoroscopic image storage means for continuously storing at least a plurality of frames of digital image signals of X-ray fluoroscopic images obtained by said A/D conversion means in correspondence with a period which includes an input timing of the radiography instruction, said fluoroscopic image storage means comprising updating storage means for continuously updating and storing a plurality of the most recent frames, storage control means responsive to the radiography instruction, for interrupting write access to said updating storage means after a predetermined period of time has elapsed from the input timing of the radiography instruction until fluoroscopic X-rays have stopped, and auxiliary storage means for fetching and storing a storage content of said updating storage means.

Claim 7

An apparatus according to claim 1, wherein said fluoroscopic image storage means includes large-capacity storage means for storing all the frames during a fluoroscopy mode period.

Claim 8

An apparatus according to claim 1, wherein said fluoroscopic image storage means includes means for supplying a storage content to said display means for display as requested.

Claim 9

An apparatus according to claim 1, wherein said X-ray image detecting means includes means for supplying a storage content to said display means for display as requested.

Claim 10

An apparatus according to claim 1, wherein said radiographic image recording means includes film radiography means for recording the X-ray radiographic image on an X-ray film.

Claim 11

An apparatus according to claim 7, wherein said film radiography means comprises a spot-shot device.

Claim 12

An apparatus according to claim 1, wherein said radiographic image recording means includes digital image signal recording means for converting the X-ray radiographic image into a digital signal and recording the digital signal on a recording medium.