Radiography apparatus with rotatably supported cylindrical ring carrying image pickup unit

A radiography apparatus comprising:

• an image pickup unit including an X ray source for irradiating cone shaped X ray beam to a patient under examination and an image receptor disposed opposite the X ray source for receiving X ray image data of the patient by the irradiated cone shaped X ray beam;
• a supporting member which carries said image pickup unit;
• a rotary member which carries said supporting member, defines a sufficient space to receive the patient therein so as to permit relative positional change of the patient with respect to said image pickup unit and is supported so as to permit rotation around its center axis;
• an image pickup unit rotating mechanism which causes to rotate said rotary member at least one rotation so as to permit rotation of said image pickup unit one time around the patient;
• a video image processing and control unit which processes and controls the X ray image data obtained from said image pickup unit;
• and
• an external member which covers said rotary member and said image pickup unit rotating mechanism other than said image pickup unit and said supporting member carrying said image pickup unit, whereby said image pickup unit and said supporting member carrying said image pickup unit are exposed outside said external covering member.

A radiography apparatus comprising:

• an image pickup unit including an X ray source for irradiating cone shaped X ray beam to a patient under examination and an image receptor disposed opposite said X ray source for receiving X ray image data of the patient by the irradiated cone shaped X ray beam;
• a cylindrical ring which carries said image pickup unit, defines a sufficient space to receive the patient therein so as to permit relative positional change of the patient with respect to said image pickup unit and is supported so as to permit rotation around its center axis;
• a first arm which extends from said cylindrical ring along its center axis and supports said X ray source in said image pickup unit;
• a second arm which extends from said cylindrical ring along its center axis so as to oppose said first arm and supports said image receptor in said image pickup unit;
• an image pickup unit rotating mechanism which causes to rotate said cylindrical ring at least one rotation so as to permit rotation of said image pickup unit one time around the patient;
• a first video image processing unit which produces a radioscopic video image based on the X ray image data obtained from said image pickup unit;
• a second video image processing unit which reconstructs a three dimensional video image based on the X ray image data obtained from said image pickup unit;
• a change-over device which changes-over the X ray image data obtained from said image pickup unit either to said first video image processing unit or to said second video image processing unit;
• a display unit which displays at least one of the radioscopic video image from said first video image processing unit and the three dimensional video image from said second video image processing unit;
• and
• an external member which covers said cylindrical ring and said image pickup unit rotating mechanism other than said image pickup unit and said first and second arms carrying said image pickup unit, whereby said image pickup unit and said first and second arms carrying said image pickup unit are exposed outside said external covering member.

A radiography apparatus comprising:

• an image pickup unit including an X ray source for irradiating cone shaped X ray beam to a patient under examination and an image receptor disposed opposite the X ray source for receiving X ray image data of the patient by the irradiated cone shaped X ray beam;
• a supporting member which carries said image pickup unit;
• a rotary member which carries said supporting member, defines a sufficient space to receive the patient therein so as to permit relative positional change of the patient with respect to said image pickup unit and is supported so as to permit rotation around its center axis;
• an image pickup unit rotating mechanism which causes to rotate said rotary member at least one rotation so as to permit rotation of said image pickup unit one time around the patient;
• a video image processing unit which processes the X ray image data obtained from said image pickup unit;
• a display unit which displays an X ray image processed in said video image processing unit;
• and
• an external member which covers said rotary member and said image pickup unit rotating mechanism other than said image pickup unit and said supporting member carrying said image pickup unit, whereby said image pickup unit and said supporting member carrying said image pickup unit are exposed outside said external covering member.