Time harmonic elastography (THE) has recently been introduced for measurement of the periodic alteration in myocardial shear modulus based on externally induced low-frequency acoustic vibrations produced by a loudspeaker. In this study, we propose further developments of cardiac THE toward a clinical modality including integration of the vibration source into the patient bed and automated param...

Various types of waves are produced when a harmonic force is applied to a semi-infinite half space elastic medium. In particular, surface waves are perturbations with transverse and longitudinal components of displacement that propagate in the boundary region at the surface of the elastic solid. Shear wave speed estimation is the standard for characterizing elastic properties of tissue in elast...

Objectives: Hepatobiliary complications commonly occur in cystic fibrosis with increasing prevalence due to longer life expectancies and widespread screening efforts. Shear-wave elastography is a novel noninvasive method that involves application of local mechanical compression on soft tissue using focused ultrasonography acquiring strain images show response. We aimed compare abdominal also cl...

There can be no doubt that the addition of ultrasound to regional anaesthesia has enabled anaesthetists to directly visualise key anatomy and monitor local anaesthetic spread [1]. A recent meta-analysis of 42 studies has shown an increase in the proportion of patients receiving good quality nerve block without need for rescue analgesia to be 93% for ultrasoundguided regional anaesthesia (UGRA),...

We demonstrate the feasibility of low-cost tabletop MR elastography (MRE) for quantifying the complex shear modulus G(∗) of small soft biological tissue samples as provided by pathologists. The MRE system was developed based on a tabletop MRI scanner equipped with a 0.5 T permanent magnet and a tissue sample holder mounted to a loudspeaker. A spin echo sequence was enhanced with motion-encoding...

The cornea, the window of the eye, provides approximately two-thirds of the total refractive power. The unique set of corneal biomechanical properties determined by its complex structure plays an important role in maintaining corneal function and human vision system [1]. Many factors, like ageing, trauma, diseases or clinical refractive surgery would affect the corneal biomechanics and finally ...

Introduction Manual palpation through digital rectal examination is an established method for prostate cancer screening. Unfortunately, the technique is highly subjective and has limited spatial resolution. Prostate MR Elastography (MRE) could address these shortcomings by mapping stiffness throughout the entire gland. Recent work suggests that intracavitary approaches using transurethral actua...