Abstract: The present invention relates to a radiopharmaceutical distribution image generation system and method using deep learning and, more specifically, to a radiopharmaceutical distribution image generation system and method using deep learning, wherein dynamic medical images collected from multiple patients and a time-radiation dose distribution curve for each organ can be learnt through a deep learning network and a spatial distribution image of a radiopharmaceutical can be generated from a static medical image acquired from a specific patient. According to the present invention, even when a medical image is acquired only for a specific time after a radiopharmaceutical is injected into a patient, a spatial distribution image of the radiopharmaceutical can be acquired across the entire time by using the deep learning network, and quantitative analysis of the radiopharmaceutical can be performed by calculating a time-radiation dose distribution curve on the basis thereof.

Abstract: A method of preparing sustainable aviation fuel (SAF) is provided. The method includes preparing renewable feedstocks and introducing the renewable feedstocks as a reactant into a hydroprocessing reaction in the presence of a catalyst, in which the catalyst includes a metal and zeolite, and the zeolite is a one-dimensional 10 membered-ring (1D 10MR) zeolite. In addition, in the hydroprocessing reaction, the conversion of fractions having boiling points above an SAF boiling point range is lower than and equal to 50%.

Abstract: The present invention relates to a radiopharmaceutical distribution image generation system and method using deep learning and, more specifically, to a radiopharmaceutical distribution image generation system and method using deep learning, wherein dynamic medical images collected from multiple patients and a time-radiation dose distribution curve for each organ can be learnt through a deep learning network and a spatial distribution image of a radiopharmaceutical can be generated from a static medical image acquired from a specific patient. According to the present invention, even when a medical image is acquired only for a specific time after a radiopharmaceutical is injected into a patient, a spatial distribution image of the radiopharmaceutical can be acquired across the entire time by usin g the deep learning network, and quantitative analysis of the radiopharmaceutical can be performed by calculating a time-radiation dose distribution curve on the basis thereof.

Abstract: The disclosure provide an apparatus for producing a nuclide by using a liquid target which can perform the nuclear reaction process and can discharge the radioactive gas such as Radon within the vial. As described above, an apparatus for producing a nuclide by using a liquid target according to the present disclosure can minimize quantitative loss of a reactant by performing the nuclear reaction process using a target of a liquefied state and reusing a liquefied target on which the nuclear reaction process has not been performed, and can improve safety by enabling the radioactive gas generated to be disposed.

Abstract: A method of producing actinium by using liquefied radium includes producing Ac-225 using Ra-226 of a liquefied state, moving the produced Ac-225 in a liquefied state after Ac-225 is produced, and separating Ac-225 and reusing Ra-226. As a result, a nuclear reaction process of Ac-225 may be performed and loss of Ra-226 may be minimized. Further, such a method may improve safety by including a radon collection unit which is capable of discharging and isolating radon produced from Ra-226, thereby preventing radiation exposure due to radon.

Abstract: A vacuum cleaner is provided. The vacuum cleaner includes a motor configured to rotate at a speed of predetermined revolutions per minute (RPM) in a normal mode, a first switch configured to control a power on/off operation of the vacuum cleaner, a second switch configured to change an operation mode of the vacuum cleaner, a battery unit including a first processor configured to, based on the first switch being pressed, control a power of the vacuum cleaner to be turned on, and a second processor configured to, based on the power of the vacuum cleaner being turned on according to an operation of the first switch, control the vacuum cleaner to operate in the normal mode, and according to an operation of the second switch in the normal mode, control the vacuum cleaner to operate in a standby mode where power supplied to the motor is turned off.

Abstract: The disclosure provide an apparatus for producing a nuclide by using a liquid target which can perform the nuclear reaction process and can discharge the radioactive gas such as Radon within the vial. As described above, an apparatus for producing a nuclide by using a liquid target according to the present disclosure can minimize quantitative loss of a reactant by performing the nuclear reaction process using a target of a liquefied state and reusing a liquefied target on which the nuclear reaction process has not been performed, and can improve safety by enabling the radioactive gas generated to be disposed.

Abstract: A method of producing actinium by using liquefied radium can minimize loss of Ra-226 according to the state change of Ac-225 by producing Ac-225 using Ra-226 of a liquefied state, moving the produced Ac-225 in a liquefied state after Ac-225 is produced, and separating and reusing Ac-225, thereby enabling a nuclear reaction process of Ac-225 to be performed. Further, a method of producing actinium by using liquefied radium according to the present disclosure has an effect of enabling safety to be improved by including a radon collection unit which is capable of discharging and isolating radon produced from Ra-226, thereby preventing radiation exposure due to radon.

Abstract: The present invention relates to an 18F-labelled compound, and a use thereof. The compound selectively binds to a prostate-specific membrane antigen (PSMA), and enables the acquisition of clear prostate cancer images in a short time when used in positron emission tomography (PET).

Abstract: The present invention relates to an 18F-labelled compound, and a use thereof. The compound selectively binds to a prostate-specific membrane antigen (PSMA), and enables the acquisition of clear prostate cancer images in a short time when used in positron emission tomography (PET).

Abstract: A vacuum cleaner is provided. The vacuum cleaner includes a motor configured to rotate at a speed of predetermined revolutions per minute (RPM) in a normal mode, a first switch configured to control a power on/off operation of the vacuum cleaner, a second switch configured to change an operation mode of the vacuum cleaner, a battery unit including a first processor configured to, based on the first switch being pressed, control a power of the vacuum cleaner to be turned on, and a second processor configured to, based on the power of the vacuum cleaner being turned on according to an operation of the first switch, control the vacuum cleaner to operate in the normal mode, and according to an operation of the second switch in the normal mode, control the vacuum cleaner to operate in a standby mode where power supplied to the motor is turned off.

Abstract: Provided are apparatuses and methods of resampling event data for quantitative improvement of a PET image, which acquire a quantitatively-improved new PET image by analyzing a storage format of list data prior to conversion into the PET image and nonparametrically resampling event data from the list data based on the analysis results to improve noise and statistical characteristics thereof. The quantitatively improved new PET image may be acquired by analyzing a storage format of list data constituting the PET image and nonparametrically resampling event data to improve noise and statistical characteristics thereof.

Abstract: Provided is a polyhedral-shaped radiation counter which measures a radiation level of a radioactive material, in which sensor modules configured to measure the radiation level are disposed at vertexes of a polyhedral shape, respectively, and the sensor modules are connected to each other by rod-shaped frame members disposed in edge positions of the polyhedral shape and face parts of the polyhedral shape form an open space.

Abstract: Provided is an apparatus and method for calculating a correction factor, the apparatus including: a counter configured to acquire first data indicating a counted value of a first radiation source according to an activity and an energy window width, and to acquire second data indicating a coincidence value of a second radiation source according to an activity and an energy window width; and a calculator configured to calculate a correction factor for correcting a difference of the coincidence value of the second radiation source having occurred in response to a single gamma photon emission of the first radiation source, based on the first data and the second data.

Abstract: Provided is a polyhedral-shaped radiation counter which measures a radiation level of a radioactive material, in which sensor modules configured to measure the radiation level are disposed at vertexes of a polyhedral shape, respectively, and the sensor modules are connected to each other by rod-shaped frame members disposed in edge positions of the polyhedral shape and face parts of the polyhedral shape form an open space.

Abstract: An apparatus and method for determining an optimal energy window for optimal positron emission tomography (PET) is disclosed. An optimal energy window determining apparatus may include a data corrector configured to correct data measured from an image quality phantom, an image quality measurer configured to measure an image quality for the corrected data, and an optimal energy window determiner configured to determine the optimal energy window based on the measured image quality. The data corrector may correct the measured data based on a difference between sensitivities measured using different radiopharmaceuticals in at least one energy window.

Abstract: Provided are apparatuses and methods of resampling event data for quantitative improvement of a PET image, which acquire a quantitatively-improved new PET image by analyzing a storage format of list data prior to conversion into the PET image and nonparametrically resampling event data from the list data based on the analysis results to improve noise and statistical characteristics thereof. The quantitatively improved new PET image may be acquired by analyzing a storage format of list data constituting the PET image and nonparametrically resampling event data to improve noise and statistical characteristics thereof.

Abstract: An apparatus and method for determining an optimal energy window for optimal positron emission tomography (PET) is disclosed. An optimal energy window determining apparatus may include a data corrector configured to correct data measured from an image quality phantom, an image quality measurer configured to measure an image quality for the corrected data, and an optimal energy window determiner configured to determine the optimal energy window based on the measured image quality. The data corrector may correct the measured data based on a difference between sensitivities measured using different radiopharmaceuticals in at least one energy window.

Abstract: Disclosed is an arrhythmia-diagnosing method and device for diagnosing arrhythmias, such as fibrillation or tachycardia. The arrhythmia-diagnosing method includes the following steps: measuring (a) the heart characteristic length, and the (b) frequency and (c) conduction velocity of the cardiac electrical wave; and (d) determining the occurrence or absence of an arrhythmia by using the three parameters measured in steps (a) to (c). With this invention, it is possible to predict and diagnose an electrical wave tornado, one of the causes of arrhythmia, by using a non-dimensional parameter, to identify patients at risk of death or brain death due to an arrhythmia and to reduce the mortality of patients suffering from arrhythmias significantly.

Abstract: Disclosed is an arrhythmia-diagnosing method and device for diagnosing arrhythmias, such as fibrillation or tachycardia. The arrhythmia-diagnosing method includes the following steps: measuring (a) the heart characteristic length, and the (b) frequency and (c) conduction velocity of the cardiac electrical wave; and (d) determining the occurrence or absence of an arrhythmia by using the three parameters measured in steps (a) to (c). With this invention, it is possible to predict and diagnose an electrical wave tornado, one of the causes of arrhythmia, by using a non-dimensional parameter, to identify patients at risk of death or brain death due to an arrhythmia and to reduce the mortality of patients suffering from arrhythmias significantly.