Slab PET limited angle molecular image positioning system and method

• Main Authors: XIONG XIANHUA, ZENG HAINING, ZHAO MING, ZHANG ZHANJUN, WANG TING, LIU LI
• Format: Patent
• Language: Chinese; English
• Published: 18.12.2018
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

The invention discloses a slab PET limited angle molecular image positioning system and method. The method comprises the steps that an imaging sample is placed between a pair of slab PETs without mechanical rotation; a pair of visible light generators emit two visible light beams, the angles of the two visible light beams are synchronously controlled through a motor, the intersection point of thetwo visible light beams is located on the surface of the imaging sample, and the position of the intersection point is worked out and stored by a computer; the positions of the pair of slab PETs are kept unchanged, and PET data is collected and transmitted to the computer; through a combination algorithm of an expectation maximization algorithm EM and a total variation minimization algorithm TV ofthe computer, the difficulties of image deformation and large image noise caused by angle deficiency are overcome, a PET reconstructed image is obtained, then the intersection point of the two visible light beams is fused int