Imaging arrangement comprising: - an emission tomography imaging system for acquiring image data of a patient, in particular a PET or SPECT imaging system, - one or more wearable devices (20, 20a, 20b) for obtaining standard uptake value, SUV, related data required for SUV determination, said wearable devices comprising: - a holding element for holding the wearable device at the patient's body; - one or more sensing elements (22, 23) for sensing SUV-related data required for SUV determination in emission tomography, including at least a time of administration of the radiotracer dose to the patient, and event data relating to one or more events that may affect the SUV determination; and - an output for outputting the sensed SUV-related data and event data; the imaging arrangement further comprising: - a device for SUV determination during an emission tomography imaging procedure of a patient to which a radiotracer dose has been administered at an imaging facility, said device comprising: - at least one input (41, 44) configured to receive SUV-related data required for SUV determination, such as administered dose of radiotracer, and event data relating to one or more events that may affect the SUV determination; wherein the SUV-related data includes at least a time of administration of the radiotracer dose to the patient; and wherein the event data includes at least one of: - a time at which an emission tomography imaging procedure of the patient is performed; - patient motion data indicative of the patient's motion during the period between administration of the radiotracer dose and a start of the emission tomography imaging procedure; - patient position data indicative of the patient's position within the imaging facility during the period between administration of the radiotracer dose and a start of the emission tomography imaging procedure; - patient vital signs data indicative of the patient's vital signs during the period between administration of the radiotracer dose and a start of the emission tomography imaging procedure; the device further comprising: - an anomalous event determination unit configured to determine, based on the event data, anomalous event information indicative of one or more anomalous events that affect the SUV determination, and - an SUV determination unit configured to determine the SUV based on said SUV-related data taking into account the anomalous event information, wherein the device is configured to determine an SUV based on the SUV-related data and the event data received by the at least one input (41, 44) of the device; and based on at least the SUV-related data outputted by the one or more wearable devices (20, 20a, 20b), and the imaging arrangement further comprising: - an evaluation unit for evaluating the acquired image data using the determined SUV. - an emission tomography imaging system for acquiring image data of a patient, in particular a PET or SPECT imaging system, - one or more wearable devices (20, 20a, 20b) for obtaining standard uptake value, SUV, related data required for SUV determination, said wearable devices comprising: - a holding element for holding the wearable device at the patient's body; - one or more sensing elements (22, 23) for sensing SUV-related data required for SUV determination in emission tomography, including at least a time of administration of the radiotracer dose to the patient, and event data relating to one or more events that may affect the SUV determination; and - an output for outputting the sensed SUV-related data and event data; - a holding element for holding the wearable device at the patient's body; - one or more sensing elements (22, 23) for sensing SUV-related data required for SUV determination in emission tomography, including at least a time of administration of the radiotracer dose to the patient, and event data relating to one or more events that may affect the SUV determination; and - an output for outputting the sensed SUV-related data and event data; - a device for SUV determination during an emission tomography imaging procedure of a patient to which a radiotracer dose has been administered at an imaging facility, said device comprising: - at least one input (41, 44) configured to receive SUV-related data required for SUV determination, such as administered dose of radiotracer, and event data relating to one or more events that may affect the SUV determination; - a time at which an emission tomography imaging procedure of the patient is performed; - patient motion data indicative of the patient's motion during the period between administration of the radiotracer dose and a start of the emission tomography imaging procedure; - patient position data indicative of the patient's position within the imaging facility during the period between administration of the radiotracer dose and a start of the emission tomography imaging procedure; - patient vital signs data indicative of the patient's vital signs during the period between administration of the radiotracer dose and a start of the emission tomography imaging procedure; - an anomalous event determination unit configured to determine, based on the event data, anomalous event information indicative of one or more anomalous events that affect the SUV determination, and - an SUV determination unit configured to determine the SUV based on said SUV-related data taking into account the anomalous event information, - an evaluation unit for evaluating the acquired image data using the determined SUV.