X-ray CT apparatus

An X-ray CT apparatus comprising:

• an X-ray source configured to generate X-rays towards a subject;
• a rotation mechanism configured to rotate the X-ray source around a rotational axis;
• an X-ray detector having a plurality of detection elements arranged in a first direction roughly parallel to the rotational axis and in a second direction which is different from the first direction and configured to detect X-rays emitted from the X-ray source;
• a reconstruction unit configured to reconstruct an image of the subject in accordance with the data detected by the X-ray detector;
• and
• the X-ray detector comprising at least four detection elements in the first direction, at least two detection elements being arranged aligned in relation to the second direction, and at least two detection elements being staggered against the at least two aligned X-ray detection elements in relation to the second direction.

An X-ray CT apparatus comprising:

• an X-ray source configured to generate X-rays towards a subject;
• a rotation mechanism configured to rotate the X-ray source around a rotational axis;
• an X-ray detector having a plurality of detection elements arranged in a first direction roughly parallel to the rotational axis and in a second direction which is different from the first direction and configured to detect X-rays emitted from the X-ray source;
• a plurality of blocking members, arranged in the first and second directions respectively and configured to block X-rays;
• a reconstruction unit configured to reconstruct an image of the subject in accordance with data detected by the X-ray detector;
• and
• the blocking members comprising first blocking members and second blocking members, the second blocking members located in the first direction in relation to the first blocking members and staggered in relation to the first blocking members in the second direction.

An X-ray CT apparatus comprising:

• an X-ray source configured to generate X-rays towards a subject;
• a rotation mechanism configured to rotate a focal point of an X-ray emitted from the X-ray source around a rotational axis;
• an X-ray detector having a plurality of detection segments, each including a plurality of detection elements arranged in a channel direction roughly parallel to the rotational axis, said detection segments arranged in a segment direction perpendicular to the channel direction;
• a blocking member located between the focal point of the X-ray and the X-ray detector and is configured to block X-rays;
• and
• a reconstruction unit configured to reconstruct an image of the subject in accordance with the data detected by the X-ray detector;
• wherein the blocking member has a plurality of apertures arranged in the channel direction.

An X-ray CT apparatus comprising:

• an X-ray source configured to generate X-rays towards a subject;
• a rotation mechanism configured to rotate a focal point of an X-ray emitted from the X-ray source around a rotational axis;
• an X-ray detector having a first detection segment and a second detection segment staggered with respect to the first detection segment in relation to a channel direction, each of said detection segments including a plurality of detection elements extending in a channel direction roughly parallel to the rotational axis;
• an interpolation processing unit configured to perform helical interpolation using a first and second projection data detected by the first and the second detection segments in a first position of the focal point of the X-ray, and third and fourth projection data detected by the first and the second detection segment in a second position where the focal point of the X-ray is roughly half a rotation from the first position;
• and
• a reconstruction unit configured to reconstruct an image of the subject in accordance with the interpolated data.

An X-ray CT apparatus comprising:

• an X-ray source configured to generate X-rays towards a subject;
• a rotation mechanism configured to rotate the X-ray source around a rotational axis;
• an X-ray detector having a plurality of detection segments, each including a plurality of detection elements arranged in a channel direction roughly parallel to the rotational axis, said detection segments arranged in a segment direction perpendicular to the channel direction;
• a blocking member configured to block X-ray emitted from the X-ray source and, having a plurality of apertures including a first section and a second section, the first section located on a first detection segment and the second section located on a second detection segment and staggered in relation to the first section in the channel direction;
• an interpolation processing unit configured to perform helical interpolation using first and second projection data detected by the first and the second detection segments in a first position of the X-ray source, and third and fourth projection data detected by the first and the second detection segments in a second position where the X-ray source is roughly half a rotation from the first position;
• and
• a reconstruction unit configured to reconstruct an image of the subject in accordance with the interpolated data.