A scanning-based arrangement for obtaining tomosynthesis data of an object
(5) at high repetition rate comprises a support structure (11);
scanning-based apparatuses (10) fixedly arranged on the support structure
and each including (i) radiation source (1), and (ii) a radiation
detector (6) comprising a stack of line detectors (6a), each being
directed towards the radiation source to allow a ray bundle (b1, . . . ,
b.sub.n, . . . , b.sub.N) of radiation that propagates in a respective
one of various different angles (.alpha..sub.1, . . . , .alpha..sub.n, .
. . , .alpha..sub.N) to enter the line detector; an object table (13)
arranged in the radiation path of one of the scanning-based apparatuses;
and a device (14) provided for rotating the support structure relative
the object table so that the object table will successively be arranged
in the radiation path of each of the scanning-based apparatuses, during
which rotation each of the line detectors of each of the scanning-based
apparatuses is adapted to record a plurality of line images of radiation
as transmitted through the object.