7results about "Radiation diagnostic techniques" patented technology

The present disclosure relates to a method, an evaluation device, a computer program and an electronically readable data carrier for evaluating dual-energy computed tomography data sets of an angiogram. The method for evaluating dual-energy computed tomography data sets of an angiogram recorded using a contrast agent comprising iodine, which data sets comprise for each image point an image vector consisting of a first attenuation value assigned to a high energy spectrum and a second attenuation value assigned to a low energy spectrum, has the following steps for determining a quantitative calcium score: presetting a calcium and iodine basis vector in a two-dimensional dual-energy space spanned by the first attenuation value as abscissa and the second attenuation value as ordinate as a basis for basis material decomposition; projecting all image vectors in the dual-energy space that lie below a straight line defined by the calcium basis vector onto the straight line in order to obtain a modified data set; performing a basis material decomposition of the modified data set in order to obtain a calcium image data set; determining a quantitative calcium score from the calcium image data set.

The present invention provides a multi-view exposure X-ray image positioning method and system, wherein the method specifically comprises: acquiring volumetric data information about a target object; shooting X-ray images corresponding to multiple view angles according to a time sequence based on a pre-set time period; and realizing position positioning of single-view-angle images according to a first optimization algorithm; in the case where the target object is in a non-static state, receiving a second image sequence according to the time sequence and performing auxiliary optimization based on different view angle images in a first pre-set time period before and after receiving the second image sequence, so as to realize position and posture optimization in a depth direction of the target object, eliminating an error of tracking and positioning only in one view angle, and realizing accurate positioning of the target object in a dynamic time sequence image.

The present disclosure provides systems and methods for determining one or more diagnostic indicators using X-ray diffraction (XRD). In some embodiments, the techniques described herein relate to a system including: a fixture configured to position a region of skin of a patient within a measurement region; an X-ray source coupled to the fixture and configured to emit an X-ray beam that overlaps with the measurement region; an X-ray receiver coupled to the fixture, the X-ray receiver including a coordinate-sensitive digital detector of X-rays; and one or more processors coupled to the X-ray receiver. The one or more processors can be configured to collect XRD data from the X-ray receiver, to process the XRD data, and to determine a diagnostic indicator for assessment of a physiological or pathological condition based on the processed XRD data.

The present invention relates to a controller (106) for dental imaging of an object. The controller includes at least one processor (802) and at least one memory (808) containing computer program code (814). The at least one memory (808) and the computer program code (814) are configured to cause the controller (106), using the at least one processor (802), to at least acquire first image data from an optical scanner unit (104), acquire second image data from a dental X-ray imaging unit (102), create a first surface model (202) from the acquired first image data, where the first surface model (202) represents an optical three-dimensional shape of a surface of a first portion of the object, and use the first surface model (202) to process the acquired second image data. The present invention also relates to an imaging system (100), a method, a computer program (814), and a computer-readable medium for dental imaging of an object.

Various embodiments of a device for in-vivo measurements radiopharmaceuticals used for diagnosis and monitoring of radiotherapy are presented. In some embodiments, the present disclosure relates to a device having a cannula that may include a measurement chamber, a radiation detector and a delivery lumen, wherein the device may be used to both deliver material to the patient (e.g., radiotracers used in radiopharmaceuticals) and measure levels and concentrations of radioactive material in, for example, the patient's blood both during and after administration of the radioactive material. In some embodiments, a plunger may be utilized to draw blood through a first opening into the measurement chamber and then return it to the bloodstream. In some embodiments, particle absorbing materials may be used to limit measurements to materials within the measurement chamber or other area of interest.