Abstract: The present invention provides a system and method for performing a single-scan rest-stress cardiac measurement. In one aspect, the system includes a positron emission tomography (PET) imaging system, a source of a first PET radiotracer for administration to a subject, a source of a second PET radiotracer for administration to a subject, and a processor. The processor has non-transient computer readable media programmed with instructions to obtain PET images of the subject administered with the radiotracer. Furthermore, the computer readable media is programmed with instructions to process the PET images with a non-steady-state, multi-compartment parametric model. An output of the non-steady-state, multi-compartment parametric model is a measure of myocardial blood flow for both a rest state and a stress state of the subject.

Abstract: Provided herein are compounds that are able to bind metal ions (e.g., free metal ions or metal ions bound to low affinity ligands) in a sample or subject. Also provided herein are methods of using the compounds for chelating metal ions and for the treatment of diseases associated with abnormal levels of metal ions. Methods of preparing the compounds and pharmaceutical compositions are also provided.

Abstract: The present invention provides a system and method for performing a single-scan rest-stress cardiac measurement. In one aspect, the system includes a positron emission tomography (PET) imaging system, a source of a first PET radiotracer for administration to a subject, a source of a second PET radiotracer for administration to a subject, and a processor. The processor has non-transient computer readable media programmed with instructions to obtain PET images of the subject administered with the radiotracer. Furthermore, the computer readable media is programmed with instructions to process the PET images with a non-steady-state, multi-compartment parametric model. An output of the non-steady-state, multi-compartment parametric model is a measure of myocardial blood flow for both a rest state and a stress state of the subject.

Abstract: Provided herein are compounds that are able to bind metal ions (e.g., free metal ions or metal ions bound to low affinity ligands) in a sample or subject. Also provided herein are methods of using the compounds for chelating metal ions and for the treatment of diseases associated with abnormal levels of metal ions. Methods of preparing the compounds and pharmaceutical compositions are also provided.

Abstract: A system and method is provided for processing a positron emission tomography (PET) image of a subject having received a dose of a radiotracer that serves as chemical analog of an MC-I inhibitor. Specifically, the processing may includes identifying portions of the at least one PET image that represent MC-I expression levels.

Abstract: Provided herein are compounds that are able to bind metal ions (e.g., free metal ions or metal ions bound to low affinity ligands) in a sample or subject. Also provided herein are methods of using the compounds for chelating metal ions and for the treatment of diseases associated with abnormal levels of metal ions. Methods of preparing the compounds and pharmaceutical compositions are also provided.

Abstract: The present disclosure a system and method for generating a tomographic image of a subject. In some aspects, the method includes receiving an initial image acquired from a subject using the tomographic imaging system, and performing, using the initial image and a cost function model, a penalty calculation based on a spatially variant hyper-parameter. The method also includes generating an updated image using the penalty calculation, and generating a finalized image by iteratively updating the updated image until a stopping criterion is met.

Abstract: Provided herein are compounds that are able to bind metal ions (e.g., free metal ions or metal ions bound to low affinity ligands) in a sample or subject. Also provided herein are methods of using the compounds for chelating metal ions and for the treatment of diseases associated with abnormal levels of metal ions. Methods of preparing the compounds and pharmaceutical compositions are also provided.

Abstract: A system, and method, for quantitatively mapping of mitochondrial membrane potential of a tissue in a subject is provided. In some aspects, the provided method includes administering to the subject a detectably effective amount of a tracer as an emission tomography imaging agent; acquiring, using an emission tomography system, emission tomography data associated with the tissue; analyzing the emission tomography data to determine a concentration distribution of the tracer within the tissue; correlating the concentration distribution of the tracer with the membrane potential of the tissue; determining, using the correlating step, a membrane potential distribution of the tissue; and generating a report indicating the membrane potential distribution of the tissue.

Abstract: Provided herein are compounds that are able to bind metal ions (e.g., free metal ions or metal ions bound to low affinity ligands) in a sample or subject. Also provided herein are methods of using the compounds for chelating metal ions and for the treatment of diseases associated with abnormal levels of metal ions. Methods of preparing the compounds and pharmaceutical compositions are also provided.

Abstract: Provided herein are compounds that are able to bind metal ions (e.g., free metal ions or metal ions bound to low affinity ligands) in a sample or subject. Also provided herein are methods of using the compounds for chelating metal ions and for the treatment of diseases associated with abnormal levels of metal ions. Methods of preparing the compounds and pharmaceutical compositions are also provided.

Abstract: The present disclosure provides a system and method for method for quantifying radioactivity production during a proton treatment of a patient. In some aspects, a method includes administering, using a proton delivery system, a proton treatment using at least one therapeutic proton beam generating positron emitting radionuclides within a region of interest (ROI) of a patient, and acquiring, using an emission tomography system, emission tomography data indicative of an activity of the positron emitting radionuclides in the ROI. The method also includes quantifying, based on a kinetic model, a radioactivity production rate of at least one positron emitting radionuclide using the emission tomography data. The method further includes generating at least one map indicative of the radioactivity production rate of the at least one positron emitting radionuclide.

Abstract: Provided herein are compounds that are able to bind metal ions (e.g., free metal ions or metal ions bound to low affinity ligands) in a sample or subject. Also provided herein are methods of using the compounds for chelating metal ions and for the treatment of diseases associated with abnormal levels of metal ions. Methods of preparing the compounds and pharmaceutical compositions are also provided.

Abstract: The present disclosure a system and method for generating a tomographic image of a subject. In some aspects, the method includes receiving an initial image acquired from a subject using the tomographic imaging system, and performing, using the initial image and a cost function model, a penalty calculation based on a spatially variant hyper-parameter. The method also includes generating an updated image using the penalty calculation, and generating a finalized image by iteratively updating the updated image until a stopping criterion is met.

Abstract: Disclosed herein are nanocarriers that include one or more cyclodextrin moieties conjugated to a polymer. The cyclodextrin moieties can complex therapeutic (e.g., anticancer) agents, and can be used to treat diseases such as cancer.

Abstract: Systems and methods for data-driven respiratory gating in positron emission tomography (PET) are provided. In some aspects, a provided method for generating motion information from PET imaging includes receiving time-of-flight (TOF) data acquired using a PET system, and selecting, using at least one image reconstructed from the TOF data, a region of interest (ROI) having tissues subject to motion. The method also includes generating a TOF sinogram mask by projecting an image mask corresponding to the ROI into a sinogram space, and applying the TOF sinogram mask to a TOF sinogram, produced using the TOF data, to identify data in the TOF sinogram associated with motion. The method further includes generating motion information using the data identified.

Abstract: A system, and method, for quantitatively mapping of mitochondrial membrane potential of a tissue in a subject is provided. In some aspects, the provided method includes administering to the subject a detectably effective amount of a tracer as an emission tomography imaging agent; acquiring, using an emission tomography system, emission tomography data associated with the tissue; analyzing the emission tomography data to determine a concentration distribution of the tracer within the tissue; correlating the concentration distribution of the tracer with the membrane potential of the tissue; determining, using the correlating step, a membrane potential distribution of the tissue; and generating a report indicating the membrane potential distribution of the tissue.

Abstract: A system and method for determining, from registered positron emission tomography (PET) sinogram data and magnetic resonance (MR) image data, an estimated attenuation sinogram uses a data consistency condition to evaluate a gradient of the PET sinogram data using the MR image data. An image of the subject is reconstructed using the estimate attenuation sinogram.

Abstract: Described here are systems and methods for reconstructing images from limited angle positron emission tomography (“PET”) data acquired using a PET system with a partial-ring detector configuration, such as an in-beam PET system. The reconstruction process is specifically designed to account for the limited angular coverage of the partial-ring detector by implementing a reduced angle system matrix in an iterative reconstruction process.

Abstract: Systems and methods for compensating motion artifacts in positron emission tomography (“PET”) imaging based on medical images acquired with a medical imaging system are provided. In some embodiments, the method includes acquiring PET data from a subject with a PET system during which at least a portion of the subject is undergoing motion, and providing medical images acquired from the subject using a medical imaging system, the medical images including regions depicting motion. The method also includes estimating, from the medical images, motion information associated with the motion of the at least a portion of the subject, and reconstructing a motion-corrected PET image using the PET data using a reconstruction algorithm that incorporates the motion information into a system matrix.