Speckle noise removal applied to ultrasound image of carotid artery based on total least squares model.

An ultrasonic image speckle noise removal method by using total least squares model is proposed and applied onto images of cardiovascular structures such as the carotid artery. On the basis of the least squares principle, the related principle of minimum square method is applied to cardiac ultrasound image speckle noise removal process to establish the model of total least squares, orthogonal projection transformation processing is utilized for the output of the model, and the denoising processing for the cardiac ultrasound image speckle noise is realized. Experimental results show that the improved algorithm can greatly improve the resolution of the image, and meet the needs of clinical medical diagnosis and treatment of the cardiovascular system for the head and neck.

Segmentation of Uterus Using Laparoscopic Ultrasound by an Image-Based Active Contour Approach for Guiding Gynecological Diagnosis and Surgery.

In laparoscopic gynecologic surgery, ultrasound has been typically implemented to diagnose urological and gynecological conditions. We applied laparoscopic ultrasonography (using Esaote 7.5~10MHz laparoscopic transducer) on the retrospective analyses of 42 women subjects during laparoscopic extirpation and excision of gynecological tumors in our hospital from August 2011 to August 2013.

A novel ultrasound based approach for lesion segmentation and its applications in gynecological laparoscopic surgery.

Laparoscopic ultrasound (LUS) has been widely utilized as a surgical aide in general, urological, and gynecological applications. Our study summarizes the clinical applications of laparoscopic ultrasonography in laparoscopic gynecologic surgery. Retrospective analyses were performed on 42 women subjects using laparoscopic surgery during laparoscopic extirpation and excision of gynecological tumors in our hospital from August 2011 to August 2013.

Acoustic Radiation Force Impulse imaging for detecting thyroid nodules: a systematic review and pooled meta-analysis.

Aim: To investigate the diagnostic performance of shear wave velocity (SWV) using virtual touch tissue quantification (VTQ) of acoustic radiation force impulse imaging (ARFI) technology in differentiating malignant and benign thyroid nodules by conducting a meta-analysis.

Material And Methods: The Cochrane library, Embase, Pubmed, and Web of Science were searched for relevant studies through December 2014. Studies evaluating the diagnostic accuracy of SWV in the identification of malignant and benign thyroid nodules by using VTQ of ARFI technology were selected.

[Measures to anatomic variations of the colonic vessels in laparoscopic operations].

In laparoscopic colorectal resection, the poor blood supply of the anastomosis after tumor excision is difficult to be determined during the operations sometimes. The change in blood supply of the bowel is mainly due to the mesenteric anatomy and the operative techniques. The direct blood supply of colon is the marginal vessels in the mesentery.

[Feature and significance of bacterial biofilm formation in middle-ear mucosa in the rat model of acute otitis media].

Objective: To investigate the relationship between bacterial biofilm and acute otitis media by observing the feature of bacterial biofilm formation in middle-ear mucosa in the rat model of acute otitis media and to study the possibility of application this rat model in bacterial biofilm research.

Methods: A total of 30 healthy, male SD rats were studied, 24 animals served as experimental group were bilaterally injected with 50 µl of Streptococcus pneumoniae suspension (1 × 10(8) CFU/ml) via a transbullar approach into the middle ear cavity after anesthesia and six animals were bilaterally inoculated equivalent saline account for control group. At day 1, 3, 5, 7, 10 and 14 after inoculation, bilateral middle-ear mucosal specimens were collected from three infected animals and one control animal for scanning electron microscopy (SME).

Evaluation of hepatocellular carcinoma by contrast-enhanced sonography: correlation with pathologic differentiation.

Objectives: The purpose of this study was to determine whether contrast-enhanced sonography can be used to differentiate histopathologic grades of hepatocellular carcinoma.

Methods: This study included 54 patients with hepatocellular carcinomas. All patients underwent fundamental and contrast-enhanced sonographic examinations.

[Cell-free fetal DNA detection in maternal plasma using real-time PCR and cycling probe technology for prenatal screening beta-thalassaemia major].

Objective: To analyze cell-free fetal DNA in maternal plasma for prenatal screening of beta-thalassaemia major.

Methods: Six couples undergoing prenatal diagnosis of beta-thalassaemia (gestational age range 23-26 weeks) were enrolled in this study. The husbands were all carriers of the CD17 (A-->T) mutation, and the wives carried another beta-thalassaemia mutation.

[A novel retrograde intubation procedure for treatment of nasolacrimal duct obstruction].

Objective: To investigate the effect of a novel intubation procedure for the treatment of nasolacrimal duct obstruction.

Methods: Nasolacrimal duct obstruction patients with chronic dacryocystitis were selected for undergoing the procedure of intubation in outpatient clinic. This procedure was performed under local anesthesia.

[A clinical and pathological analysis on laryngeal contact granuloma among 18 cases].

Objective: To summarize the clinicopathologic feature and diagnostic and therapeutic experience of laryngeal contact granuloma.

Method: A retrospective study was carried out among 18 cases with this disease through careful analysis on their clinical and pathological data.

Result: All of 18 cases were male, aged 34 to 78 years,The most common symptoms were hoarseness.