E TSZINKHAN,Е Цзинхань (US),VESEL DZHON F.,ВЕСЕЛ Джон Ф. (US),PETRILLO MAJKL DZH.,ПЕТРИЛЛО Майкл Дж. (US)
申请号：
RU2009109428/14
公开号：
RU0002452385C2
申请日:
2007.07.24
申请国别(地区):
RU
年份:
2012
代理人:
摘要：
FIELD: medicine.SUBSTANCE: invention relates to computer tomography. Device for collection of data of tomographic projections in multitude of angular positions relative to an object, located in the examination area, contains radiation source, detector, source and transversal centre of detector being transversally displaced relative to the centre of transversal field of view during collection of data of projections and direction of transversal displacement being tangential with respect to transversal field of view. Methods of computer tomography contains stages, at which first irradiation is emitted from position which is transversally displaced from the centre of transversal field of view, detector of irradiation is used for collection of data of computer-tomographic projections, stages of first irradiation emission and application of irradiation detector for collection of data of computer-tomographic projections are repeated and first set of CT data is reconstructed to form first three-dimensional data. Computer-tomographic device contains roentgen source transversally displaced from rotation axis, roentgen detector, also transversally displaced from rotation axis and rotating relative to rotation axis in state of constant mechanical connection with roentgen source. Roentgen source emits irradiation, characterised by transversal angle of fan beam, and complete taking of angular readings of transversal field of view requires collection of data of projections in larger angle range than 180° plus the angle of fan-beam. Device also contains unit of reconstruction of data of projections for formation of three-dimensional data, characterising transversal field of view.EFFECT: increase of device efficiency.39 cl, 9 dwgИзобретение относится к компьютерной томографии. Устройство для сбора данных томографических проекций во множестве угловых положений относительно объекта, расположенного в области исследования, содержит источник излучения, детектор, при этом источник и попер
