نتایج جستجو برای: ultrasonic diagnosis
تعداد نتایج: 494187 فیلتر نتایج به سال:
Bronchogenic cysts in the muscularis of cardia are very rare lesions. We report a 33-year-old woman who presented epigastric distention, pain, nausea and vomiting. MRI diagnosis lesion was stromal tumor located liver stomach space. Ultrasonic examination indicated that cystic structure closely related to gastric wall, lesions from wall were determined.
development of ultrasound technique has not been progressing for evaluating the internal quality of fruits as fast as that of processed foods. in this research for quality assessment of pear fruit (shah miveh variety) an ultrasonic measurement system was constructed to transmit and receive the ultrasonic waves. the apparatus included a pulser-receiver, a pair of 75 khz ultrasonic transducers wi...
The echocardiographic features of 14 patients with double-chambered right ventricle are presented. Diagnosis was confirmed in 13 patients at cardiac catheterization and in one at necropsy. The ultrasonic diagnosis was based on the visualization in subxiphoid short-axis view of an anomalous muscle bundle at the lower margin of the right ventricular infundibulum; this structure was present in dia...
using ultrasonic devices in endodontics can enhance the antibacterial and tissue dissolving ability of different root canal irrigants such as sodium hypochlorite (naocl) which is the most common irrigant with excellent antibacterial and tissue dissolving abilities. however, due to its high surface tension, its penetration into the irregularities of the root canal system is a challenge. the purp...
Thls paper proposes a new perceptual approach to noisy X-ray image segmentation. It consists of the five major s t e p : (1) Pre-segmentation, (2) Improved region growing, (3) Object detection. The heuristic knowledge about the biological struction of the human organs and simulation of human expert diagnosis is arranged by knowledge mechanism. And the knowledge driven interpretation is consiste...
Both the spectrum and correlation characteristics are important in constructing excitation sequences to realize the multichannel ultrasonic sensors working together. For LFM excitation sequence, there should not be too many simultaneously fired ultrasonic sensors, because of the limited available frequency band of the ultrasonic ranging system. The optimized CFM excitation sequences are propose...
Congenital chloride diarrhoea (CCD) is a recessively inherited disorder of chloride transport in the distal ileum and colon. Congenital chloride diarrhoea is a common metabolic disorder in Kuwait with an incidence of 1/3200. Clinical findings in 14 children with CCD are reported over a period of 4 years. Maternal polyhydramnios, abdominal distension, watery diarrhoea, and a high faecal chloride...
Investigation on the Ultrasonic Tube Hydroforming in the Bulging Process Using Finite Element Method
In ultrasonic tube hydroforming, the tube is hydro formed while the ultrasonic vibration is applied to the die. Prior studies provide experimental proof that ultrasonic tube hydroforming reduces corner radius, improves lubrication and uniform thickness. Use of ultrasonic vibration can decrease friction at the tube-die interface. Few attempts have been made to analyze the wire drawing while the ...
Abstract Ultrasonic image examination is the first choice for diagnosis of thyroid papillary carcinoma. However, there are some problems in ultrasonic carcinoma, such as poor definition, tissue overlap and low resolution, which make difficult to be diagnosed. Capsule network (CapsNet) can effectively address other problems. This paper investigates a new model based on capsule network, named Res...
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