ABSTRACT
Objective To explore three-dimensional ultrasonographic features of common ocular diseases. Methods To acquire the data, the free-hand scanning without positioning system was employed in 3 to 5 seconds. Following or after acquisitions, the data were processed and 3D image was reconstructed. Then three-dimensional ultrasonographic features of ocular diseases were characterized. Results 3D images were rendered successfully on 46 eyes of 48 ones. The reconstruction of 3D ultrasonography provided clear stereo images in which shape, dimension, structure, location of retinal detachment, choroidal detachment, vitreous fibrous membrane, lens dislocation, intraocular foreign body and intraocular trauma could be clearly demonstrated. Conclusions 3D ultrasonography needs much shorter scanning time with good space visualization. In the diagnosis of ocular diseases 3D ultrasonic reconstruction can provide more useful information than traditional 2D ultrasonography.
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Objective To explore the clinical value of B ultrasound-guided psychro-circulation percutaneous microwave coagulation therapy(PMCT) in the treatment of liver cancer.Methods One hundred and sixteen liver cancer patients with 154 lesions were selected to receive psychro-circulation PMCT in our department from July 2004 to December 2007.The pre-and postoperative alpha fetoprotein(AFP) levels were detected.The diameters and blood flow state of the tumors were measured and compared by use of B ultrasound and computerized tomographic scanning(CT).The postoperative 1,2 and 3 y survival rate of those patients was followed up and recorded.Results No mortality or severe complications occurred in this series.Preoperative serum AFP level of the patients was(421.6?36.5)?g/L and decreased obviously to(232.5?25.6)?g/L at 1 month after psychro-circulation PMCT(P
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Objective To evaluate the results of liver carcinoma treated by radiofrequency ablation(RFA) with color Doppler ultrasonography(CDU). Methods Hemodynamic changes of the interior and periphery of 212 nodules of liver carcinoma in 152 patients were investigated by CDU one week before and one month after RFA. Results Blood flow signals were found in 187 cancerous nodules before RFA, and were chiefly from mixed arterio-venous blood supply. After RFA, the blood flow signals of these 187 cancerous nodules completely disappeared in 133, were reduced in 40 and did not change in 14. Peripherar blood flow did not change in 51.2% of the tumors. Conclusions CDU is useful in evaluating the therapeutic effect of RFA in patients with liver carcinoma and may provide information for further treatment.
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Objective To investigate the efficacy of percutaneous automatic renal biopsy guided by ultrasound with two approaches. Methods One hundred and fifty patients who were suspected with diffuse renal disease were divided into two groups randomly: group A (n=74) and group B (n=76). In both groups A and B, an 18G cut needle with automatic biopsy gun was inserted the inferior pole of right kidney from proximal and distal end of transducer, respectively. After accomplishment, the times of puncture, length of sample, number of glomeruli and complications were recorded were recorded. And the number of glomeruli per centimeter was calculated. Results The differentiation of diffuse renal disease was assured by the specimens obtained by biopsy in all the patients. The puncture times in group A was less than those in group B (P0.05), and the number of glomeruli per centimeter in group A was more than that in group B (P