Abstract: A method of reconstructing an image of a colon, including receiving scan data of a colon taken by an imaging capsule that traverses the colon; wherein the imaging capsule emits X-ray radiation inside the colon and includes detectors that detect photons that are returned toward the imaging capsule from X-ray fluorescence and Compton back scattering interactions responsive to the radiation; and wherein the scan data includes counts of photons detected by each detector from X-ray fluorescence and Compton back scattering interactions; defining an initial guess of a geometry of a contour of a slice of the colon; calculating count values for each detector responsive to the geometry using a forward model; comparing the calculated count values of each detector with the values from the scan data; if the results of the comparison do not indicate reaching an optimal match then adjust the defined geometry and repeat the calculating and comparing.

Abstract: A method of reconstructing an image of a colon, including receiving scan data of a colon taken by an imaging capsule that traverses the colon; wherein the imaging capsule emits X-ray radiation inside the colon and includes detectors that detect photons that are returned toward the imaging capsule from X-ray fluorescence and Compton back scattering interactions responsive to the radiation; and wherein the scan data includes counts of photons detected by each detector from X-ray fluorescence and Compton back scattering interactions; defining an initial guess of a geometry of a contour of a slice of the colon; calculating count values for each detector responsive to the geometry using a forward model; comparing the calculated count values of each detector with the values from the scan data; if the results of the comparison do not indicate reaching an optimal match then adjust the defined geometry and repeat the calculating and comparing.

Abstract: In one aspect, the present invention is directed to a modular electronic musical keyboard instrument, comprising: an array of separate keyboard segments (30, 32), each comprising a piano keyboard (20) in a range of one octave; a control system, for converting a keystroke of each key in the array of keyboard segments to a note sound in a level corresponding to the order of the key in the array of keyboard segments; octave order setting means (22), for determining to the control system the order of each keyboard segment in the array of keyboard segments; communication means of each of the keyboard segments with the control system; and connection means (12, 14) with another keyboard segment.

Abstract: In one aspect, the present invention is directed to a modular electronic musical keyboard instrument, comprising: an array of separate keyboard segments (30, 32), each comprising a piano keyboard (20) in a range of one octave; a control system, for converting a keystroke of each key in the array of keyboard segments to a note sound in a level corresponding to the order of the key in the array of keyboard segments; octave order setting means (22), for determining to the control system the order of each keyboard segment in the array of keyboard segments; communication means of each of the keyboard segments with the control system; and connection means (12, 14) with another keyboard segment.

Abstract: A system for detecting clinically-relevant features of a gastrointestinal (GI) tract of a subject. The system comprises an external magnetic field generator adapted to be affixed to a patient for generating at predetermined time intervals a magnetic field with respect to the subject. The magnetic field has a predetermined polarity and flux density, thereby establishing a patient coordinate system based upon the magnetic field. The system includes a capsule adapted to be swallowed by a subject. The system further includes at least one radiation source emitting X-ray or gamma radiation and at least one radiation detector. The radiation detector is configured to detect in a first energy window collimated X-ray fluorescence radiation from the X-ray contrast agent composition excited by the emitted radiation, and to detect a second energy window Compton-backscattered radiation from the X-ray contrast agent and the wall of the GI tract produced in response to the emitted radiation.

Abstract: A pixilated scintillator, scintillator array and methods of fabricating the same are provided. The scintillator array comprises a grid having walls, a scintillator crystal packed between the walls, and a reflective coating provided between the walls and the scintillator crystal.