Features | Partner Sites | Information | LinkXpress
Sign In
Ampronix
ElsMed
Schiller

Quantitative Ultrasound Shown to Optimize Assessment of Long Bone Fracture

By Medimaging International staff writers
Posted on 27 Aug 2014
Image: Fig. 1a and Fig. 1b depict the guided signals in the intact and fractured long bones, respectively. These images shows an (a) intact and (b) 1-mm width 100% depth fracture (Photo courtesy of Science China Press).
Image: Fig. 1a and Fig. 1b depict the guided signals in the intact and fractured long bones, respectively. These images shows an (a) intact and (b) 1-mm width 100% depth fracture (Photo courtesy of Science China Press).
Research has revealed that mode conversion of ultrasonic-guided waves can quantitatively indicate the fracture degree of long cortical bone, which may provide a new way of evaluating long bone fracture and monitor healing.

This study was published July 24, 2014, in the journal SCIENCE CHINA Physica, Mechanica & Astronomica. Prof. T.A. De-an, from School of Information Science and Technology at Fudan University (Shanghai, China) led the study, which quantitatively analyzed the impact of fracture width and depth on the amplitude of guided waves.

Bone fracture is a medical disorder in which bone discontinuity is created by stresses higher than the bone can bear. Statistical studies show that 5%–10% of the fractured patients are suffering healing complications. Fracture healing is a proliferative process, and full recovery can take up to three to five years. The pathology in the healing process is easily overlooked, leading to severe bone loss and secondary damage, impacting the physical condition of the patients. Therefore, early diagnosis of the healing problem is key to ensure the healing process. The accurate diagnosis and dynamic monitoring are essential for prompt treatment.

With the advantages of quantitative ultrasound (QUS), such as portability, inexpensive, and nonionizing radiation, ultrasonic guided waves can also detect the geometry of long cortical bone, (e.g., profile, thickness, and section) and measure the material parameters (e.g., BMD, porosity and Young’s modulus), which has attracted increasing attention. However, due to the little understood nature of ultrasound propagation in long cortical bones, ultrasonic-guided wave technology has not been widely applied to the clinical practice of the long bone fracture evaluation.

Numeric simulations are performed to analyze the guided waves propagation in the fractured long bone. The novelty of this study is the use of narrowband low-frequency ultrasound to avoid the multimode overlap. Only two fundamental guided modes, symmetric S0 and asymmetric A0, are excited, which simplifies the mode separation and quantitative determination. The impact of fracture width and depth on the amplitudes of each guided modes were quantitatively discussed in the article. The amplitude of the A0 mode is very sensitive to the width and depth variation. The ratio between the amplitudes of S0 and A0 is further proposed to be used in the evaluation of the fracture degree.

The mode conversion of the ultrasonic-guided waves can, therefore, characterize the changes in the fracture depth and fracture width and provide quantitative parameters fracture evaluation. The study may also be helpful to the ultrasound monitoring of long bone healing, according to the researchers.

Related Links:

Fudan University



Channels

Radiography

view channel
Image: The Somatom Scope CT system’s biopsy and intervention modes for CT-guided intervention enhance precision and streamline workflow (Photo courtesy of Siemens Healthcare).

16-Slice CT System’s Technology Extends Operational Lifetime by Minimizing Wear and Tear

A new 16-slice computed tomography (CT) system is designed for clinical routine and is available in two power configurations to better meet clinical, workflow requirements. Siemens Healthcare (Erlangen,... Read more

MRI

view channel
Image: MagLab’s 900 MHz magnet (Photo courtesy of FSU – Florida State University).

High Magnetic Field MRI Technology Provides Comprehensive Analysis of Strokes

A new, novel way to categorize the severity of a stroke, help in diagnosis, and assesse potential treatments has been demonstrated by US researchers. “Stroke affects millions of adults and children... Read more

Nuclear medicine

view channel
Image: The ProBeam system treatment room (Photo courtesy of Varian Medical Systems).

Five Proton Therapy Treatment Rooms Plus System Upgrade Deployed at Scripps Proton Therapy Center

An upgrade of a proton system will improve workflow at a US proton therapy center, enabling the use of the fixed-beam treatment rooms as well as more diverse patient-positioning devices.... Read more

General/Advanced Imaging

view channel
Image: New laser technology designed to detect breast cancer based on photoacoustics (Photo courtesy of Universidad Carlos III de Madrid).

Photoacoustics Used to Detect Breast Cancer

Spanish scientists are using new laser technology to detect breast cancer based on photoacoustics. The new approach could become an alternative to mammography or ultrasound. The European science project... Read more

Imaging IT

view channel
Image: The Clinical Data Collaboration platform uses Carestream’s intelligent vendor-neutral archive (VNA) to archive and exchange radiology, dermatology, endoscopy, and cardiology files (Photo courtesy of Carestream).

IT Systems Designed to Streamline Radiologists Workflow While Improving Patient Care

New information technology (IT) systems have been designed to help radiology professionals improve patient care, workflow, and cut costs. Carestream recently developed (Rochester, NY, USA) new capabilities... Read more

Industry News

view channel

Global Partnership Provides Treatment Planning Support for Modulated Arc Radiotherapy

Varian Medical Systems (Palo Alto, CA, USA) Eclipse treatment planning software can now be used to plan modulated arc radiotherapy (mARC) treatments at sites using Siemens Healthcare (Erlangen, Germany) medical linear accelerators. Varian Medical Systems and Siemens Healthcare presented their range of solutions that... Read more
 
Copyright © 2000-2014 Globetech Media. All rights reserved.