Abstract: Methods and systems are disclosed, including a method for confining an annihilation range of a positron, from a plurality of positrons emitted from an object being imaged in a positron emission tomography (PET) imaging system. Confining the annihilation includes applying a stochastic multidimensional time varying magnetic field on the positron. Optionally, the stochastic multidimensional time varying magnetic field includes components in each of three dimensions.
Type:
Grant
Filed:
December 19, 2017
Date of Patent:
May 21, 2019
Assignee:
PARTO NEGAR PERSIA CO.
Inventors:
Hojjat Mahani, Mustafa Abbasi, Mohammad Reza Ay, Saeed Sarkar, Mohammad Hossein Farahani
Abstract: A method and a system for single photon emission computed tomography (SPECT) imaging capable of performing a rapid acquisition of imaging data. The SPECT imaging system, placed at a fixed radial distance from the center of an object being imaged, includes a gamma detector and a collimator. The collimator, mounted on the gamma detector, includes a plurality of parallel slats, each perpendicular to the surface of the gamma detector. The method implemented by this system rapidly reconstructs a high-resolution and high-sensitivity image.
Type:
Application
Filed:
March 13, 2018
Publication date:
September 13, 2018
Applicant:
Parto Negar Persia Co.
Inventors:
Hojjat Mahani, Mohammad Reza Ay, Saeed Sarkar, Mohammad Hossein Farahani
Abstract: A robotic arm, movable in three rotational degrees of freedom has a base end and a distal end supporting SPECT imaging detectors. A patient support assembly is movable in a linear degree of freedom. A controller causes the robotic arm to move the SPECT imaging detectors, in three dimensions, around the patient's body to obtain SPECT images. The control causes the patient support assembly to move along the linear degree of freedom, maintaining alignment of the patient's body with the SPECT imaging detectors.
Type:
Grant
Filed:
April 14, 2016
Date of Patent:
June 5, 2018
Assignee:
PARTO NEGAR PERSIA CO.
Inventors:
Mohammad Reza Ay, Mohammad Hossein Farahani, Saeed Sarkar, Behnoosh Teimourian Fard, Salar Sajedi Toighoun, Sanaz Kaviani
Abstract: An open-gantry structure of SPECT imaging system for scanning human small organs or small animals and method for preparing the system is disclosed. The system contains an imaging desk that one or multiple detector heads are rotated around the object to be scanned while tilted under the imaging desk and dedicated image reconstruction algorithm was developed for the system in case of applying single pinhole collimator.
Type:
Grant
Filed:
December 19, 2015
Date of Patent:
September 5, 2017
Assignee:
Parto Negar Persia Co.
Inventors:
Navid Zeraatkar, Mohammad Hossein Farahani, Mohammad Reza Ay, Saeid Sarkar
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