A nondestructive imaging method, scanning near-field ultrasound holography (SNFUH), has been developed that provides depth information as well as spatial resolution at the 10- to 100-nanometer scale. In SNFUH, the phase and amplitude of the scattered specimen ultrasound wave, reflected in perturbation to the surface acoustic standing wave, are mapped with a scanning probe microscopy platform to...

OBJECTIVE The purpose of this video article is to show the technique for performing an ultrasound examination of the knee, describe the anatomy of the knee as seen on ultrasound, and summarize the indications for performing ultrasound of the knee. CONCLUSION Proper positioning of the patient is important to ensure a good quality ultrasound examination of the knee, and knowledge of the anatomy...

A 35-YR-OLD woman presented with a postdural puncture headache for epidural blood patch. The procedure was performed in the lateral position. A curvilinear ultrasound probe with sterile cover was used to visualize the epidural space. A 20-G epidural needle was used to identify the space by the loss-of-resistance technique. Blood was then injected into the epidural space under real-time ultrasou...

This paper proposes a fetal gender and weight estimation method using ultrasound images. Normally the gender and weight estimation is done by the physician through the observation only. The accuracy of the gender and weight estimation strongly dependent on the experiences of the physician as the images of ultrasound are not clear for those low cost two dimension (2D) ultrasound. In order to inc...

BACKGROUND AND OBJECTIVE Bedside ultrasound allows direct visualization of pleural collections for thoracentesis and tube thoracostomy. However, there is little information on patient safety improvement methods with this approach. The effect of a checklist on patient safety for bedside ultrasound-guided pleural procedures was evaluated. METHODS A prospective study of ultrasound-guided pleural...

The mechanical scanning of a single element transducer has been mostly utilized for high-frequency ultrasound imaging. However, it requires space for the mechanical motion of the transducer. In this paper, a rotational scanning ultrasound biomicroscopy (UBM) system equipped with a high-frequency angled needle transducer is designed and implemented in order to minimize the space required. It was...

BACKGROUND Antenatal ultrasound scan is a widely accepted component of antenatal care. Studies have looked at the relationship between ultrasound scanning and caesarean section (CS) in certain groups of women in China. However, there are limited data on the utilization of antenatal ultrasound scanning in the general population, including its association with CS. The purpose of this study is to ...

Most obstetric ultrasound scanning is carried out by radiographers, who have professional constraints that forbid them to disclose the result of any investigation to any patient or to hold themselves as professionally qualified to diagnose. A nationwide survey was carried out to explore the paramedical aspects of obstetric ultrasound services and determine how radiographers reconcile their prof...

Twenty-one fourth-year medical students were given a brief lecture on ultrasound of the knee and fifteen minutes of supervised ultrasound scanning of three cadavers which had been injected with saline to give varying degrees of knee effusions. Each student was then individually observed and required to scan both knees of a cadaver different from the practice cadavers and identify the patella, t...