Mean scatterer spacing (MSS) estimated from ultrasonic backscattering is of valuable information for tissue characterization. However, low ultrasound frequency, sound attenuation, and diffuse scattering significantly disturb the current MSS measurement methods. The aim of this study is to improve MSS measurement with Coded Excitation (CE) enhanced cepstrum estimation. The study proposes a Golay...

AIM The objective was to determine clinical and microbiological effects and perceived treatment discomfort of root debridement by subgingival air polishing compared with ultrasonic instrumentation during supportive periodontal therapy (SPT). MATERIAL AND METHODS The trial was conducted as a split-mouth designed study of 2-month duration including 20 recall patients previously treated for chro...

OBJECTIVE To investigate ultrasonic evaluation methods for detecting whether the repair tissue is hyaline cartilage or fibrocartilage in new cartilage regeneration therapy. METHODS We examined four experimental rabbit models: a spontaneous repair model (group S), a large cartilage defect model (group L), a periosteal graft model (group P) and a tissue-engineered cartilage regeneration model (...

can be sources of infection. However, since nebulization solutions are classified as external preparations, their hygienic management tends to be neglected at present. We investigated the microbial contamination of nebulization solutions in use from ultrasonic nebulizers commonly used in nebulizer therapy. In addition, the methods of preventing the microbial contamination of these nebulization ...

Soft-lens cataract surgeries are becoming increasingly common for cataract surgeons and chopping the soft nucleus using conventional techniques is problematic. We introduced a femtosecond laser combined with a non-chopping rotation phacoemulsification technique for soft-nucleus cataract surgery and evaluated the safety and efficacy of using this technique. Sixty-six patients with soft-nucleus c...

BACKGROUND Report of three patients with pseudophakic angle-closure from a Soemmering ring. Three mechanisms of the Soemmering ring induced pseudophakic angle-closure in three patients were demonstrated by meticulous anterior segment examination and ultrasound biomicroscopic (UBM) analysis. CASE PRESENTATION In the first case, the Soemmering-capsule-IOL complex caused relative pupillary block...

PURPOSE To compare the effect of different fragmentation softening grids in femtosecond laser-assisted cataract surgery on effective phacoemulsification time (EPT). SETTING Ruhr University Eye Clinic, Bochum, Germany. DESIGN Prospective randomized clinical trial. METHODS The study evaluated the feasibility of using a femtosecond laser (Catalys Precision Laser System) to perform capsulotom...

Granulomatous prostatitis is an unusual, but well-recognized entity frequently mistaken for carcinoma on both digital rectal examination and transrectal ultrasound. The ultrasonographic findings of 11 patients with histologically-proven granulomatous prostatitis are reviewed.

INTRODUCTION Ultrasound has proven to be an important therapeutic resource regarding musculoskeletal disease and is routinely used in physical therapy and medicine both therapeutically and diagnostically. The aim of the present study was to analyse the effects with different ultrasound intensities in order to establish the ideal radiation level in cell cultures. MATERIAL AND METHODS FIBROBLAS...

MR acoustic radiation force imaging provides a promising method to monitor therapeutic ultrasound treatments. By measuring the displacement induced by the acoustic radiation force, MR acoustic radiation force imaging can locate the focal spot, without a significant temperature rise. In this work, the encoding gradient for MR acoustic radiation force imaging is optimized to achieve an enhanced a...