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    PATIENT BED FOR PET/MR IMAGING SYSTEMS
    2.
    发明公开
    PATIENT BED FOR PET/MR IMAGING SYSTEMS 有权
    患者床PET / MR成像系统

    公开(公告)号：EP2081490A1

    公开(公告)日：2009-07-29

    申请号：EP07874217.8

    申请日：2007-10-16

    申请人： Koninklijke Philips Electronics N.V.

    发明人： GAGNON, Daniel ,  MORICH, Michael, A. ,  BLAKELEY, Douglas, M.

    IPC分类号： A61B5/055 ,  A61B6/04

    CPC分类号： A61B5/0555 ,  A61B5/0035 ,  A61B6/032 ,  A61B6/037 ,  A61B6/4417 ,  A61B6/4429

    摘要： A hybrid imaging system and a patient bed (14) for same are disclosed. The hybrid imaging system includes a magnetic resonance scanner (10) and a second modality imaging system (12) spaced apart from the magnetic resonance scanner by a gap. In some embodiments, the gap is less than seven meters. The patient bed is disposed at least partially in the gap between the magnetic resonance scanner and the second modality imaging system, and includes a linearly translatable patient support pallet (22) aligned to be selectively moved into an examination region (24) of the magnetic resonance scanner for magnetic resonance imaging and into an examination region (26) of the second modality imaging system for second modality imaging. In some embodiments, a linear translation range of the linearly translatable pallet is less than five times a length of the patient support pallet along the direction of linear translation.

    GEOMETRICAL TRANSFORMATIONS PRESERVING LIST-MODE FORMAT
    4.
    发明公开
    GEOMETRICAL TRANSFORMATIONS PRESERVING LIST-MODE FORMAT 审中-公开
    LIST MODE FORMAT为了延长几何变换

    公开(公告)号：EP2286274A2

    公开(公告)日：2011-02-23

    申请号：EP09754234.4

    申请日：2009-05-13

    申请人： Koninklijke Philips Electronics N.V.

    发明人： GAGNON, Daniel ,  OLIVIER, Patrick ,  KHURD, Parmeshwar, Kishore

    IPC分类号： G01T1/164 ,  G06T11/00

    CPC分类号： G01T1/1648 ,  A61B6/037 ,  G06T11/005

    摘要： A diagnostic imaging device includes detector elements (16) for detecting gamma-rays indicative of nuclear decay events. The detected gamma-rays are used to produce lines of response (LORs) (46), which are time stamped (20) and stored in list mode. The LORs are reconstructed (34) into an image. An image analysis processor (38) analyzes the image for motion artifacts and iteratively adjusts an event transform processor (30) to transform selected LORs to minimize the motion artifacts. If the transformed LOR (50) does not correspond with a pair of detector elements (16), closest detector elements (52, 54) are determined. Candidate LORs (62) are created between the closest and neighboring detector elements. An event location (40) on an LOR (46) is determined from the time-of-flight (TOF) information and then transformed (47) to generate a transformed event location (48). The candidate LOR (62) which most nearly intersects the transformed event location (40) and the appropriately updated TOF information is selected for use in image reconstruction.

    HYBRID MR/PET WITH CORRECTION FOR RADIATION ABSORPTION BY MR COIL
    5.
    发明公开
    HYBRID MR/PET WITH CORRECTION FOR RADIATION ABSORPTION BY MR COIL 有权
    有校正辐射吸收BY MR线圈混合MR / PET

    公开(公告)号：EP2147327A1

    公开(公告)日：2010-01-27

    申请号：EP08737896.4

    申请日：2008-04-17

    申请人： Koninklijke Philips Electronics N.V.

    发明人： MORICH, Michael, A. ,  DEMEESTER, Gordon, D. ,  GAGNON, Daniel

    IPC分类号： G01R33/48 ,  G01T1/161

    CPC分类号： G01R33/481 ,  G01R33/4808 ,  G01T1/1603 ,  G01T1/1647

    摘要： An imaging method comprises: acquiring magnetic resonance data of a subject using a magnetic resonance component (30, 30′) disposed with the subject; acquiring nuclear imaging data of the subject with the magnetic resonance component disposed with the subject; determining a position of the magnetic resonance component respective to a frame of reference of the nuclear imaging data; and reconstructing the nuclear imaging data (60) to generate a nuclear image (62) of at least a portion of the subject. The reconstructing includes adjusting at least one of the nuclear imaging data and the nuclear image based on a density map (46) of the magnetic resonance component and the determined position of the magnetic resonance component respective to the frame of reference of the nuclear imaging data to correct the nuclear image for radiation absorption by the magnetic resonance component.

    PET IMAGING USING ANATOMIC LIST MODE MASK
    7.
    发明公开
    PET IMAGING USING ANATOMIC LIST MODE MASK 审中-公开
    PET成像中一个解剖LIST MODE MASK

    公开(公告)号：EP1949136A1

    公开(公告)日：2008-07-30

    申请号：EP06809627.0

    申请日：2006-10-17

    申请人： Koninklijke Philips Electronics N.V.

    发明人： GAGNON, Daniel ,  WANG, Wenli ,  HU, Zhiqiang

    IPC分类号： G01T1/29 ,  G06T11/00

    CPC分类号： G01T1/2985 ,  A61B6/037 ,  G01T1/1611 ,  G06T11/006 ,  G06T2211/424

    摘要： A method and apparatus are provided for reconstructing list mode data acquired during a positron emission tomography scan of an object, the data including information indicative of a plurality of detected positron annihilation events. Detected events occurring in a region of interest are identified; the identified events are reconstructed using an iterative reconstruction technique which includes a ray tracing operation to generate volumetric data indicative of the region of interest, wherein the ray tracing operation traces only image matrix elements located in the region of interest; and a human readable image indicative of the volumetric data is generated. In another aspect an image mask and a projection mask are defined correlating to the region of interest; image matrix elements located in the region of interest are determined by applying the image mask; and detected events occurring in a region of interest are identified by applying the projection mask.

    ECG-GATED TEMPORAL SAMPLING IN CARDIAC KINETIC MODELING
    9.
    发明公开
    ECG-GATED TEMPORAL SAMPLING IN CARDIAC KINETIC MODELING 有权
    心脏动力学模型心电图控制的SCAN颞

    公开(公告)号：EP1890591A1

    公开(公告)日：2008-02-27

    申请号：EP06727871.3

    申请日：2006-04-10

    申请人： Koninklijke Philips Electronics N.V.

    发明人： GAGNON, Daniel ,  BRAESS, Henning

    IPC分类号： A61B5/04

    CPC分类号： A61B6/541 ,  A61B5/02755 ,  A61B5/7289 ,  A61B6/037 ,  A61B6/5288 ,  A61B8/5276 ,  A61B8/543

    摘要： In a diagnostic imaging system (10), a monitor (50) monitors periodic biological cycles of the subject (14). A trigger point detector (60) detects a time (tl, t2, ..., tn) of a common, reoccurring reference point (Rl, R2, ..., Rn) in each periodic cycle of the subject (14). A sequence selector (62) selects a sequence (64) of nominal sampling segments (Si, S2, ..., Sn). An adjustor (70) adjusts duration of each nominal sampling segment (Si, S2, ..., Sn) to coincide with the times of detected reference points (Rl, R2, ..., Rn). A scaling processor (72) scales each adjusted segment based on a difference in duration between the corresponding nominal (Si, S2, ..., Sn) and adjusted sampling segments (S'i, S'2, ..., S'n).

    ENCLOSURE FOR HYGROSCOPIC SCINTILLATION CRYSTAL FOR NUCLEAR IMAGING
    10.
    发明公开
    ENCLOSURE FOR HYGROSCOPIC SCINTILLATION CRYSTAL FOR NUCLEAR IMAGING 审中-公开
    住房吸湿闪烁FOR核成像

    公开(公告)号：EP2344906A2

    公开(公告)日：2011-07-20

    申请号：EP09740540.1

    申请日：2009-10-05

    申请人： Koninklijke Philips Electronics N.V.

    发明人： GAGNON, Daniel

    IPC分类号： G01T1/20

    CPC分类号： G01T1/2018 ,  Y10T29/49002

    摘要： When employing hygroscopic scintillation crystals (32) in a nuclear detector (e.g., PET or SPECT), Silicon photomultiplier (SiPM) sensors (34) are coupled to each scintillation crystal (32) to improve scintillation event detection and reduce scatter. The crystals (32) and sensors (34) are hermetically sealed in a detector housing (50) using a sealant layer (51). Electrical contacts (60) from each sensor (34) extend through the sealant layer (51) or are bused together such that the bus extends through the sealant layer (51). In this manner, hygroscopic scintillation crystals (e.g., LaBr, NaI, etc.) are protected from humidity and light scatter is reduced by direct coupling of the sensors (34) and crystals (32).