The invention is an imaging device comprising detector and collimator element (144) applied e.g. in a SPECT. In the imaging device according to the invention the collimator element comprises - one or more first pinholes (146a, 148a) being focussed on a central field of view (141), the one or more first pinholes (146a, 148a) being adapted for projecting the central field of view (141) on one or more respective first imaging regions (52) being non-overlapping with any other imaging regions； - one or more second pinholes (148b) being focussed on a central field of view (141), the one or more second pinholes (148b) being adapted for projecting the central field of view (141) on one or more respective second imaging regions (56)； - one or more second pinholes (148c) being focussed on a primary field of view (142) comprising the central field of view (141), the one or more third pinholes (148c) being adapted for projecting the primary field of view (142) on one or more respective third imaging regions (58) overlapping with at least one second imaging region (56). The invention is furthermore a tomographic apparatus (e.g. a SPECT) comprising the imaging device.
