Abstract: Systems and methods are described, which generate a plurality of virtual monochromatic X-ray images having different energy levels even with a CT system with single energy CT. An example CT system includes an X-ray tube in which a prescribed tube voltage (120 (kVp)) is applied and one or more processors. The one or more processors perform an operation including inputting a CT image generated based on the single energy CT data collected from a subject body to a trained neural network (94), and causing the trained neural network to infer 40 (keV), 50 (keV), 60 (keV), 80 (keV), 90 (keV), and 100 (keV) virtual monochromatic X-ray images based on the CT image.

Abstract: A device including one or more processor for performing an operation, the operation including inputting a CT image into a first trained neural network, causing the first trained neural network to infer a virtual monochromatic X-ray image based on the CT image, generating a water density image and iodine density image based on the CT image and the virtual monochromatic X-ray image inferred by the first trained neural network, inputting the water density image and iodine density image into a second trained neural network, and causing the second trained neural network to infer a water density image and iodine density image based on the water density image and iodine density image.

Abstract: A computed tomography (CT) system with one or a plurality of processors to perform operations. The operations include reconstructing a series of virtual monochromatic X-ray images of the first energy and a series of virtual monochromatic X-ray images of the second energy based on data collected from an imaging subject, inputting the input image generated based on the reconstructed virtual monochromatic X-ray images of the second energy to the trained model and using the trained model to infer a series of virtual monochromatic X-ray image of the first energy, and generating a corrected series of virtual monochromatic X-ray images of the first energy based on the first reconstructed series of virtual monochromatic X-ray images of the first energy and the inferred series of virtual monochromatic X-ray images of the first energy.

Abstract: The present disclosure relates to a system and method with which an imaged range in the past can be reproduced with high precision. In accordance with certain embodiments, an X-ray CT apparatus includes a camera-image producing section for producing a first camera image of a patient, a landmark fixing section for fixing a landmark with reference to a chest of the patient, and an imaged-range defining section for defining a first imaged range in a first scan based on landmark data representing the landmark. The camera-image producing section acquires a second camera image of the patient in a follow-up examination, the landmark fixing section fixes a second landmark with reference to the chest of the patient contained in the second image, and the imaged-range defining section defines second imaged range in a second scan based on landmark data representing the landmarks, and imaged-range data representing the first imaged range.

Abstract: The present disclosure relates to a system and method with which an imaged range in the past can be reproduced with high precision. In accordance with certain embodiments, an X-ray CT apparatus includes a camera-image producing section for producing a first camera image of a patient, a landmark fixing section for fixing a landmark with reference to a chest of the patient, and an imaged-range defining section for defining a first imaged range in a first scan based on landmark data representing the landmark. The camera-image producing section acquires a second camera image of the patient in a follow-up examination, the landmark fixing section fixes a second landmark with reference to the chest of the patient contained in the second image, and the imaged-range defining section defines second imaged range in a second scan based on landmark data representing the landmarks, and imaged-range data representing the first imaged range.

Abstract: The present disclosure relates to a system and method with which an imaged range in the past can be reproduced with high precision. In accordance with certain embodiments, an X-ray CT apparatus includes a camera-image producing section for producing a first camera image of a patient, a landmark fixing section for fixing a landmark with reference to a chest of the patient, and an imaged-range defining section for defining a first imaged range in a first scan based on landmark data representing the landmark. The camera-image producing section acquires a second camera image of the patient in a follow-up examination, the landmark fixing section fixes a second landmark with reference to the chest of the patient contained in the second image, and the imaged-range defining section defines second imaged range in a second scan based on landmark data representing the landmarks, and imaged-range data representing the first imaged range.