نتایج جستجو برای: low level ultrasound

تعداد نتایج: 2180111  

2011
Mohammad Talebi Ahamd Ayatollahi Ali Kermani

Image segmentation is one of the earliest and most important stages of image processing and plays an important role in both qualitative and quantitative analysis of medical ultrasound images but ultrasound images have low level of contrast and are corrupted with strong speckle noise. Due to these effects, segmentation of ultrasound images is very challenging and traditional image segmentation m...

Journal: :Obstetrics and gynecology 2014
Mary Gatter Katrina Kimport Diana Greene Foster Tracy A Weitz Ushma D Upadhyay

OBJECTIVE Ultrasound scanning is a routine part of preprocedure abortion care, and many health care providers offer patients the opportunity to view their ultrasound images. It has been speculated that ultrasound viewing will dissuade women from having an abortion. We examine whether viewing the image is associated with choosing to continue the pregnancy. METHODS Data from medical records for...

Introduction: One of the challenges facing ovarian transplantation is overcoming the ischemia/ reperfusion injury. When blood supply to the implanted tissue is suboptimal (immediate post implant period), ultrasound therapy has been shown to increase mass transport. The aim of this study was to investigate the effect of ultrasound on heterotopic transplantation of mouse ovarian tissue. Methods...

Background: The study aimed to evaluate the impact of Calligonum extract and US radiation on sperm parametersof cryopreserved human semen samples.Materials and Methods: In this experimental study, twenty-five semen specimens were obtained from healthy semendonors and incubated in human tubal fluid (HTF) medium supplemented with 10% human serum albumin (HSA) for45 minutes...

2012

The application of ultrasound energy at much lower levels than is the current clinical norm is starting to gain ground as a therapeutic possibility. Clearly the applied energy is the same, it is the ‘dose’ which is different – most importantly, the intensity (W/cm) – which is MUCH lower – typically 2 or 3 times lower than the lowest setting on most regular clinical machines, with the most commo...

2017
Guoxin Ren Houyu Jv Zhuowei Tian Shalva R. Gvetadze Jingzhou Hu Mei Zhao Ge Zhou Chenping Zhang Zhiyuan Zhang

BACKGROUND Hyperthermia is considered an efficient complement in the treatment of head and neck squamous cell carcinoma (HNSCC). Hyperthermia induces cell apoptosis in a temperature- and time-dependent manner. However, the molecular mechanism of hyperthermia remains unclear. The aim of this study was to investigate the mechanism of apoptosis induced by ultrasound hyperthermia in HNSCC cell line...

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