US 10,376,225 B2
Scanning X-ray imaging device with variable shield plates and method for operating same
Per Mattias Myrman, Tyresö (SE)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 15/101,957
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Dec. 4, 2014, PCT No. PCT/EP2014/076474
§ 371(c)(1), (2) Date Jun. 6, 2016,
PCT Pub. No. WO2015/086412, PCT Pub. Date Jun. 18, 2015.
Claims priority of application No. 13196323 (EP), filed on Dec. 9, 2013.
Prior Publication US 2016/0310087 A1, Oct. 27, 2016
Int. Cl. A61B 6/03 (2006.01); A61B 6/06 (2006.01); A61B 6/00 (2006.01); G21K 1/04 (2006.01)
CPC A61B 6/06 (2013.01) [A61B 6/405 (2013.01); A61B 6/4035 (2013.01); A61B 6/4266 (2013.01); A61B 6/502 (2013.01); G21K 1/043 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A scanning X-ray imaging device comprising:
an X-ray source;
an X-ray line detector including a first edge and a second edge that are disposed on opposite sides of the X-ray line detector;
a field limiter arrangement; and
an observation volume;
wherein the X-ray source is adapted to emit an X-ray beam towards the X-ray line detector;
a moving mechanism coupled to at least one of the X-ray source and the X-ray line detector, the moving mechanism adapted to perform a scanning motion such as to scan at least portions of the X-ray beam through a region of interest within the observation volume;
wherein the observation volume is arranged between the X-ray source and the X-ray line detector;
wherein the field limiter arrangement is arranged between the X-ray source and the observation volume;
wherein the field limiter arrangement comprises at least two variable shield plates and a displacing mechanism;
wherein the shield plates may be displaced with respect to the center axis of the x-ray beam by the displacing mechanism such as to vary a cross section of an opening between the shield plates through which at least a part of the X-ray beam is transmitted; and
wherein the shield plates may be displaced independently from each other by the displacing mechanism; and
wherein the independent displacing of the shield plates is controlled by the displacing mechanism such that, as a center of the opening between the shield plates moves from the first edge side of the X-ray line detector to the second edge side of the X-ray line detector, the opening between the shield plates is successively opened to a larger cross section and then closed to a smaller cross section during the scanning motion.