Physiological analysis from video x-ray imaging
Inventors
Sehnert, William J. • Wang, Xiaohui • Vogelsang, Levon O. • Foos, David H.
Assignees
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Publication Number
US-12433554-B2
Publication Date
2025-10-07
Expiration Date
Abstract
A method for radiographic imaging of a patient directs imaging radiation to an anatomy of the patient using a radiographic imaging apparatus. A first image of the patient anatomy is captured in a digital detector, and one or more image acquisition factors are electronically stored. A second radiographic image of the same patient anatomy is captured by accessing and using the stored one or more image acquisition factors. A combination of the first and second radiographic images is displayed or transmitted.
Core Innovation
The invention relates to a method for radiographic imaging of a patient using a radiographic imaging apparatus having a control processor, an x-ray source, and a digital radiographic detector. Radiographic energy is directed from the x-ray source through the patient, and a first radiographic image of an anatomy of the patient is captured in the detector. One or more image acquisition factors used for capturing the first radiographic image are stored in electronic memory accessible by the control processor.
A trigger condition related to patient movement is stored as one of the image acquisition factors, and in at least one instance the trigger condition comprises a breathing pattern of the patient. A second radiographic image is captured by accessing and applying the stored image acquisition factors to obtain a second capture with the stored acquisition context. The method also measures a respiratory cycle of the patient and captures the second radiographic image by timing activation of the x-ray source according to a preselected point of the measured respiratory cycle.
The method displays or transmits a combination of the first and second radiographic images. The described combination of images can include digital subtraction of the second captured radiographic image from the first captured radiographic image.
Claims Coverage
The document includes three independent method claims, each focused on capturing a first radiographic image, storing associated image acquisition factors, capturing a second radiographic image by re-accessing and applying the stored factors, and displaying or transmitting a combination of the first and second radiographic images. The inventive features specifically address a trigger condition related to patient movement, including a breathing pattern, and timing of a second capture based on a measured respiratory cycle.
Storing acquisition factors for a second capture
Storing one or more image acquisition factors used for capturing the first radiographic image in an electronic memory accessible by the control processor; capturing a second radiographic image of the anatomy of the patient by accessing and applying the stored image acquisition factors; displaying or transmitting a combination of the first and second radiographic images.
Trigger condition related to patient movement for second capture
Storing a trigger condition related to patient movement as one of said one or more image acquisition factors; capturing a second radiographic image of the anatomy of the patient by accessing and applying the stored image acquisition factors; displaying or transmitting a combination of the first and second radiographic images.
Timing second capture from measured respiratory cycle
Measuring a respiratory cycle of the patient and capturing the second radiographic image by timing activation of the x-ray source according to a preselected point of the measured respiratory cycle of the patient; displaying or transmitting a combination of the first and second radiographic images.
Overall, the claim set covers methods that store image acquisition factors from a first radiographic imaging session and reuse them to capture a second radiographic image, with patient-movement-trigger and breathing-pattern embodiments and a respiratory-cycle timing embodiment. The combination of the first and second radiographic images is then displayed or transmitted, and dependent claims further refine image acquisition factors and image combination operations such as digital subtraction.
Stated Advantages
Improving consistency of repeated chest x-rays by capturing and matching image acquisition conditions between sessions.
Documented Applications
Radiographic imaging in an ICU context for repeated chest x-rays.
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