Keysight Technologies Singapore (holdings) Pte. Ltd.

Planmed Oy

Elektrobit System Test Oy

Juhamatti Malm

Tapio Laukkanen

Pekka Kyösti

Jukka-Pekka Nuutinen

Mikko Lilja

Tarek Mohsen

The invention relates to a calibration process specifically applicable for limited angle digital breast tomosynthesis (DBT). The method includes acquiring a set of X-ray projection exposure images, forming an initial estimate of the projection geometry corresponding to each of X-ray projection exposure images, computing an intermediate DBT reconstruction, establishing a set of rigid transformation parameters applied to an initial projection geometry estimate for each X-ray projection exposure image corresponding to calibration result, and computing a final DBT reconstruction using the set of X-ray projection exposure images and a final calibrated estimate of the projection geometry.

Self-calibration procedure for digital breast tomosynthesis imaging apparatus

The invention relates to positioning of partial volumes of an anatomy in connection with an imaging process. According to the invention, a photograph is taken of an object arranged in an imaging station by a camera arranged in connection with the imaging station, which image of the anatomy is presented on a display but as transferred into a new position with respect to the imaging station. When this image and a substantially real time image taken of the imaging station are presented on a display one upon another, it is possible to follow on the display how the object being imaged positions in relation to said image taken of the anatomy transferred into the new position.

Positioning of partial volumes of an anatomy

An emulating system of an over-the-air test comprises a radio channel emulator, a selector, a connector and a plurality of antenna elements placed around a test spot for an electronic device under test. The selector receives data on a simulated radio channel from the radio channel emulator and selects a subset of a plurality of positions of antenna elements on the basis of the data. The connector connects only the antenna elements in the subset and the radio channel emulator for physically realizing the simulated radio channel.

Over-the-air test

Growing community of inventors

Helsinki, Finland

Juhamatti Malm