it is over several decades that ultrasound is used to enhance the transdermal drug delivery (phonphoresis). the mechanism of the enhancement is not fully understood and the ability of ultrasound on the enhancement for some drugs is unclear. the effect of continuous wave 870 khz ultrasound at intensity of 1 w/cm 2 for 15 minutes on transdermal absorption of piroxicam from solution and gel formul...

In spite of wide spread investigations performed,the biological effects of ultrasound waves,specially on DNA molecule has not been fully understood.since any alteration in DNA molecule can lead to chromosome abnormality,the study of clastogenic effects of ultrasound is important.in this study,the effect of 1MHz frequency continuous waves with the power of 0.5,1 and 1.5 watts on G human lymphocy...

Introduction: Phonophoresis is the use of ultrasound to enhancing cellular drug delivery through the skin. In this study the effect of clobethasole and hydrocortisone ointments phonophoresis on pain, knee osteoarthritis and some other symptoms was studied. Methods: An experimental single blind randomized clinical trial (RCT) was used. An available sampling technique was used for selection o...

hematuria is one of the most common genitourinary findings in children and extensive evaluation frequently fails to establish its etiology. ‎a known cause of hematuria in children is nephrolithiasis. ultrasound is a good method for diagnosis, but calculi less than 5 mm in diameter may not have a posterior shadow. calyceal microlithiasis (cm) is characterized by presence of hyperechogenic spots ...

in this research,the effect of power ultrasound (20 khz ,800 and 1000w) at 20.40 and 60 minutes on physico-chemical properties of two rice varieties tarom and neda was investigated and by the soaking method in controlled temperature (47°c) compared.results showed the maximum amount of water absorption of rice, observed at 60 minutes ultrasound treatment (1000w) and the lowest was observed in co...

placental site trophoblastic tumor (pstt) is a very rare variant of gestational trophoblastic tumor. it can occur after normal termination of pregnancy or spontaneous abortion and ectopic or molar pregnancy. there is a wide range of clinical manifestations from a benign condition to an aggressive disease with fatal outcome. one of the most important characteristics of pstt, unlike other forms o...

we report a rare case of congenital foregut cysts (esophageal bronchogenic cyst) in a young woman with history of long term dysphagia. she presented with dysphagia and upper gastrointestinal endoscopy showed bulge submucosal lesion in the distal of the esophagus. endoscopic ultrasound showed a 3×3 cm cystic lesion suggestive for esophageal duplication or bronchogenic cyst. computed tomography o...

Drying is one of the widely used methods of food preservation and it is a sensitive food processing operation due to undesirable changes in the quality of dried product. In this study the effect of osmotic dyhedration and ultrasound pretreatment prior to convective drying on quality properties of apple slices was investigated. Apple slices were pretreated by osmotic dehydration in two concentra...

Background: The induction of bystander effect via ionizing radiation has been well proven. However, few studies have investigated the bystander effect following non-ionizing radiation, such as ultrasound waves. Here, the bystander effect after different sonication times on human melanoma cell line (A375), is evaluated by assessing cell viability and apoptosis. Materials and Methods: The cells w...