Ultrasonic CT imaging process by measuring skeleton broad band ultrasonic attenuation

Abstract

The invention discloses an ultrasonic CT imaging method of bone broad-band attenuation (BUA) detected by non-diffraction ultrasound, which is characterized by the following: adopting non-diffraction ultrasonic field as launching field to pierce bone; obtaining BUA parameter through fitful mathematical and physical method; reconstructing BUA cut image of bone through CT imaging technique; selecting Bessel ultrasonic field or X-wave ultrasonic field as non-diffraction ultrasonic field; improving imaging distinguishability with low cost effectively.

Description

Technical field: [0001] The invention belongs to the application field of medical ultrasound, and measures the density of bone (mineral) based on the absorption characteristics of the bone to ultrasonic waves, and realizes tomographic imaging of the bone broadband ultrasonic attenuation (BUS). Background technique: [0002] Osteoporosis (Osteoporosis, referred to as: OP) is a problem commonly faced by the elderly. Since there is no effective and safe method to cure OP, timely and accurate early diagnosis of OP has become a research hotspot in various countries. The main indicator that reflects OP syndrome is bone mineral density (Bone mineral density, referred to as: BMD). At present, the use of Quantitative Ultrasonic technique (Quitative Ultrasonic technique, referred to as: QUS) to detect bone (mineral) density is a non-invasive and innovative technology. QUS is the use of broadband ultrasound attenuation (Broadband ultrasound attenuation, referred to as: BUA) changes to refle...

AI Technical Summary

Problems solved by technology

However, the disadvantages of the traditional method are: 1. It can only measure the BUA value of the whole bone, and cannot reflect the point-by-point distribution of BUA in the bone; 2. The sound field emitted by the traditional ultrasonic probe has a diffraction effect, which gradually diverges during the propagation process. The diameter of the effective sound field becomes larger accordingly, so the directionality of BUA measurement is poor, which directly affects the resolution of detection imaging

However, it is well known that X-rays are harmful to the human body, and the cost of measurement is high, the equipment is large in size, requires ultra-high voltage power supply, and cannot be carried at all.

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