Magnetic Resonance Imaging (MRI) has excellent soft-tissue contrast, multi-planar imaging capability, and sensitivity to subtle changes in tissue morphology and function Ultrasound imaging, on the other hand, has high temporal resolution volumetric imaging capabilities, the ability to quantify of blood flow, and detect boundaries with small acoustic impedance differences. In addition ultrasound...

This paper presents an initial implementation of a Virtual Ultrasound Imaging System as an interactive educational tool for students and researchers in the medical ultrasound imaging field. The system uses a cause and effect approach for understanding the results of changing transducer attributes and pulse parameters on the quality of the ultrasound image. The elements of the system include Fie...

Advances in the development and improvement of medical technologies methods processing images make it possible to highlight clinically significant characteristics that were not previously available classical imaging. Ultrasound diagnostics thyroid gland nodules has a huge potential processing. The article presents an overview existing ultrasound classification systems for malignancy prospects i...

BACKGROUND Catheter-based therapeutic ultrasound thrombolysis was recently shown to be effective and safe. The purpose of this work was to study the safety and efficacy of external high-intensity focused ultrasound thrombolysis guided by ultrasound imaging in experimental settings. METHODS AND RESULTS A therapeutic transducer was constructed from an acoustic lens and integrated with an ultras...

o bjectives: to evaluate the accuracy of sonography in diagnosing acute appendicitis in patients with alvarado score 4–7. m e thods: this is a retrospective cross-sectional study being performed in namazee hospital affiliated with shiraz university of medical sciences during a one year period from 9/2007 to 9/2008. we evaluated all patients with alvarado score 4-7 and divided them in two groups...

Introduction: Portable ultrasound is extensively used in the delivery suite, and there is anecdotal evidence that ultrasound is increasingly common in routine outpatient gynaecological practice. We could find no published data regarding the prevalence of 'rooms' ultrasound use in outpatient gynaecology. Methods: A survey instrument was developed containing demographic questions about 'rooms' ul...

background tomosynthesis is a new technology of digital mammography that enables the acquisition of a three - dimensional image and allows visualization of cancers not apparent by conventional mammography. ultrasound (us) is also used for tumor monitoring, which is highly operator dependent and has some problems with reproducibility. us is also an easily available and noninvasive modality. our ...

Avascular areas on contrast-enhanced magnetic resonance imaging have been considered to be areas of localized prostate cancer successfully treated by high-intensity focused ultrasound. However, the optimal timing of magnetic resonance imaging has not been discussed. The thermal effect of high-intensity focused ultrasound is degraded by regional prostatic blood flow. Conversely, the mechanical e...