34 results about "Bone densitometers" patented technology

An x-ray densitometry system provides computer assistance to the operator in identifying possible sources of scanning or analysis error through computer review of the acquired data, operator input, and the ultimate diagnostic outputs.

A scanning bone densitometer includes an x-ray source to produce x-rays and an x-ray detector receiving x-rays emitted from the x-ray source. The x-ray detector includes a cadmium tellurium (CdTe) semiconductor. The scanning bone densitometer also includes a controller moving the x-ray source and the x-ray detector along a transverse scanning path to acquire a plurality of scan images of an object of interest.

Methods and systems for computer assisted detection of arterial calcification, for example in the abdominal artery, by using measurements such as those conventionally taken with a dual x-ray energy bone densitometers at single energy or dual energy, and for using the calcification assessment either alone or with other information to assess and report a risk of a cardiovascular event.

The invention discloses an integrated ultrasonic bone density instrument. The integrated ultrasonic bone density instrument comprises two ultrasonic probes and a driving controller, wherein the two ultrasonic probes are oppositely arranged and are connected with an air cylinder through the driving controller; the driving controller is connected with a tablet personal computer to provide an ultrasonic detection signal; the tablet personal computer is connected with a miniature printer to print a diagnosis report about analytical processing; the air cylinder and the driving controller are integrally connected; the air cylinder and the miniature printer are arranged in a machine frame; the tablet personal computer is inlaid into the surface of the machine frame. According to the integrated ultrasonic bone density instrument provided by the invention, the tablet personal computer, a color printer, the ultrasonic probes and the driving controller are integrally embedded into the machine frame through an embedded structure, so that an ultrasonic signal can be detected and analytically processed, and the diagnosis report can be printed. The integrated ultrasonic bone density instrument is simple in structure and easy to operate and use, and has the characteristics of small size and low power consumption, so that the cost is greatly reduced.

The present invention provides a system for improving the accuracy of the measurement of the osteoporosis condition of the human body parts especially bones using more than three parameters, viz., the broadband ultrasonic attenuation (BUA) quantity, the velocity of ultrasound (SOS) in the bone, the broadband ultrasonic back scattering (BUB) intensity, and the Width of received maximum (WORM) values are calculated from received ultrasound signals.The accuracy of each measured diagnostic parameter is improved by measuring the tissue thickness and the squish amount in the coupling pad instead of assuming constant thickness for the tissue. The several operating modes of the device are controlled and the frequency and the timing of the emitted ultrasounds signals are adjusted by using a field programmable gate array. The error generated in the measurement of the bone mineral density due to the variation in the anatomy and the size of the foot, is removed by using a removable footpad. The present invention provides a mechanism to replace the gel pads easily. The generation of cross infection is prevented by using the disposable and replaceable coupling pads.

The invention provides a human body bone mineral density predicting device for predicting the risk of osteoporosis. The human body bone mineral density predicting device comprises a height and weight tester, a blood pressure monitor, an X-ray bone densitometer, an oximeter, a temperature and humidity transmitter, filters, a data acquirer, a trigger, a central processor and a computer, wherein the output end of the height and weight tester, the output end of the blood monitor, the output end of the X-ray bone densitometer, the output end of the oximeter and the output end of the temperature and humidity transmitter are respectively connected with input ends of the filters; output ends of the filters are respectively connected to the input end of the data acquirer; the output end of the data acquire is connected to the input end of the trigger; the output end of the trigger is connected to the input end of the central processor; and the output end of the central processor is connected to the computer. By measuring key factors affecting bone mineral density and processing signals, the bone mineral density of a human body on the next moment is predicted, and a prediction result can serve as a parameter basis for further researching and predicting the risk of the osteoporosis.

The invention provides an ultrasonic bone density instrument probe position monitoring system and a monitoring method thereof and relates to the technical field of ultrasonic detection. The monitoring system comprises an ultrasonic wave transmitting module for transmitting ultrasonic wave signals to the surface of a monitored bone, an ultrasonic wave receiving module for receiving the ultrasonic wave signals reflected by the surface of the monitored bone, a judgment module connected with the ultrasonic wave receiving module, and a display module connected with the judgment module, wherein the judgment module receives the ultrasonic wave signals received by the ultrasonic wave receiving module, screens the received ultrasonic wave signals according to preset conditions so as to judge whether the received ultrasonic wave signals meet the bone density detection conditions or not, and the display module is used for displaying a judgment result of the judgment module and relative position relation of an ultrasonic bone density instrument probe and the monitored bone. The ultrasonic bone density instrument probe position monitoring system can display whether the positions of the probe and the monitored bone meet the requirements or not in real time according to a monitoring result and facilitate improvement of the accuracy and detection efficiency of an ultrasonic bone density instrument.

The invention discloses a high-precision full-dry ultrasonic bone densitometer. The bone densitometer is composed of an ultrasonic parameter measurement unit, a sensor unit, and a mechanical drive unit of the bone densitometer; the ultrasonic parameter measurement unit includes control communication, time measurement, ultrasonic transmit / receive switching, ultrasonic excitation, ultrasonic receiving, and transmitting & receiving probe group modules. Two transmitting & receiving probes were used to measure the width of the soft tissue on both sides of the calcaneus, and the timing chip timed; the error of the difference in the width of the soft tissue of the calcaneus and the difference in the speed of sound between the soft tissue and the calcaneus was eliminated. The temperature sensor measures the body surface temperature of the calcaneus, and corrects the sound velocity of the calcaneal soft tissue with reference to the body surface temperature to improve the measurement accuracy. The transmitting & receiving probe is equipped with a thin film pressure sensor to ensure the consistency of the calcaneal clamping force; the ball screw pair + bidirectional guide rail transmission structure ensures the center symmetry of the transmitting & receiving probe movement. The solid-state coupling auxiliary probe generates an ultrasonic transmission channel, which further improves the measurement accuracy.

A system and method for performing skeletal age assessment is provided. The method includes scanning a hand and / or wrist of a patient using a dual-energy x-ray imaging system, acquiring density information of the hand and wrist using the scan, comparing the density information to at least one reference image, and automatically determining a skeletal age of the patient based on the comparison.