Development of application and producing in targeted ultrasound contrast agent
Chinese Journal of Ultrasonography.1993;0(03):-.
Chinese Journal of Ultrasonography
1992 to Present ISSN: 1004-4477
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Development of myocardial motion assessment in dobutamine stress echocardiography
Chinese Journal of Ultrasonography.1993;0(03):-.
Chinese Journal of Ultrasonography.1993;0(03):-.
Objective To evaluate the value of power Doppler and contrast-enhanced ultrasonography in the detection of tumor after microwave tissue coagulation (MTC). Methods Ultrasound Microwave Theraphy-1 (UMT-1) equipment was used,and a 9 mm length antenna was inserted directly into the tumor at laparotomy in 10 VX 2-bearing rabbits. The energy output was 60 W?120 s per bout. Two-dimensional, power and contrast-enhanced (Levovist, 300 mg/ml, 0.3 ml/kg) imaging was performed pre- and post-treatment. Pathology examination was applied in contrast. Results Along the needle being narrow hyper echoic imaging, broad-equable hypo echoic imaging was observed around the center after MTC immediately and the edge of tumor was unclear. Intratumoral blood flow was observed in 4 VX 2 tumors with power ultrasonography while there was enhanced-signal in 10 VX 2 tumors using contrast-enhanced ultrasonography. These tumors were confirmed incomplete necrosis by pathology. Conclusions Contrast-enhanced power Doppler ultrasonography shows more sensitive in assessing the therapeutic effect of microwave on VX 2 tumor. Residual tumor can be seen as persistent color enhancement by using contrast-enhanced ultrasonography.
Application of acoustic densitometry technique on regression of rabbit atherosclerosis
Chinese Journal of Ultrasonography.1993;0(03):-.
Objective To explore the application of acoustic densitometry(AD) on evaluating effects of simvastatin, probucol, captopril and Chinese medicine on the atherosclerosis (AS) characterization of rabbit. Methods Sixty male New Zealand rabbits were divided randomly into five groups:normal group, regression control group(RC), simvastatin group, probucol group, captopril and Chinese medicine group. The intima-media thickness (IMT), lumen acoustic densitometry (AII-L), intima-media acoustic densitometry (AII-I), adventitia acoustic densitometry (AII-A) and corrected acoustic densitometry (AIIc) of abdominal aorta were measured with high frequency ultrasound at the beginning, the 12th and 24th week of the experiment. Abdominal aorta was also examined through pathology at 24th week of the experiment. Results Analysis of abdominal aortas from 8 rabbits in vitro showed the different effects of the different frequencies of transducer on the AII value of lumen, intima-media and the adventitia. AIIc was calculated to evaluate acoustic density of intima-media to avoid the influence of individual divergence.AIIc in 4 drug-therapy groups were significantly higher than AS model group (P
Application of contrast agent Levovist in diagnosis of cerebral aneurysms
Chinese Journal of Ultrasonography.1993;0(03):-.
0.05). Conclusions Ultrasound contrast agent Levovist improves signal of blood flow obviously. It increases the diagnostic accuracy for intracranial aneurysms and the level of confidence.
Ultrasonic measurement of humeral distal epiphysial anteverted angulation
Chinese Journal of Ultrasonography.1993;0(03):-.
Objective To explore the changing regularity of humeral distal epiphysial anteverted angulation with ultrasonic measurement. Methods Using an ultrasonic diagnostic apparatus with a high frequency bougie to detect the dextral elbow joint of 203 normal individuals whose age range is from 5 d to 23 years old. The subjects were divided into 5 groups by age (5 d-4 years old, 5-8 years old, 9-12 years old, 13-16 years old, ≥17 years old),and by sex into two large parts.Anteverted angulation of capitellum and lateral semitrochlear ossification center were measured with statistic analysis and correlation calculation.Results Anteverted angulation of capitellum was 48.89?? 8.96?, lateral semitrochlea 33.70?? 7.18?. Anteverted angulation of capitellum enlarges with age growth, and it reaches the climax ( 55.00?? 5.88?) at the age 13-16 years old. There was a significant difference among groups. After 17 years old, anteverted angulation slightly reduces to 52.38?? 8.27?, compared with the climax ( 55.00?? 5.88?), there was no statistical difference. Changing regularity of anteverted angulation was similar to that of capitellum. Just between the 5 d-4 years old group and 5-8 years old group, the difference was significant in angulation enlargement. There was no statistical difference among the groups above the 5-8 years old group, and no significant difference between male and female in humeral distal epiphysial anteverted angulation. Conclusions Ultrasonic examination can clearly display the images of humeral distal epiphysis. Observation and measurement is available for the epiphysial anteverted angulation by acoustic images, and the changing regularity of anteverted angulation can be illustrated.
Comparative study of cystic renal cell carcinoma by ultrasonography and CT
Chinese Journal of Ultrasonography.1993;0(03):-.
Objective To study the features and values of ultrasound and Helical computed tomography (CT) in diagnosis of cystic renal cell carcinoma. Methods Twenty patients were preoperatively examined by B-mode ultrasound, color Doppler ultrasound and helical CT. Results All the cases were confirmed by operation and pathology,including 12 cases on the left side and 8 cases on the right side. On B-mode ultrasound images, all lesions appeared as unilocular or multilocular cyst in 5 cases, intratumoral septum in 10 cases,intratumoral nodule in 4 cases,solid-like mass in 1 case. Color blood flow was showed within tumors in 18 patients,in which 17 cases showed the arterial spectrum with a mean resistance index of 0.66. On enhanced CT scans, all the lesions appeared as the early uneven enhancement(19 cases), septal enhancement(6 cases) and mural nodular enhancement(4 cases) respectively. The accuracy of conventional ultrasound combined with color Doppler ultrasound was 85%, while the accuracy of the enhanced CT was 80%.Conclusions Conventional ultrasound combined with color Doppler ultrasound and enhanced CT plays an important role in diagnosis of cystic renal cell carcinoma.
Clinical value of repeat transcrectal ultrasound guided biopsy in prostatic cancer
Chinese Journal of Ultrasonography.1993;0(03):-.
Objective To evaluate the clinical value of repeat transrectal ultrasound (TRUS) guided biopsy in prostatic cancer (PCA). Methods Repeat TRUS guided biopsy was conducted on 54 patients of the previous benign TRUS guided biopsy at high risk of PCA. Postatic specific antigen ranged in 0.5- 90.0 ?g/L(mean 16.3 ?g/L). Twenty-nine patients were abnormal in digital rectal examination, 21 patients were abnormal in TRUS. Results Forty-seven patients had 2 consecutive times of the biopsy, 6 patients had 3 consecutive times, 1 patient had 4 consecutive times in 54 patients of repeat TRUS guided biopsy. The pathological finding was confirmed in 14 PCA ( 25.9%), and 31 benign prostatic hyperplasia, 5 prostatic intra-epithelial neoplasmia, 4 chronic prostatitis. Conclusions The detection of PCA will be increased by repeat TRUS guided biopsy at high risk of PCA after the previous benign TRUS guided biopsy.
Chinese Journal of Ultrasonography.1993;0(03):-.
Objective To develop a protocol for ultrasound-guided percutaneous radiofrequency ablation (RFA) on hepatic tumors larger than 3.5 cm in diameter, and to evaluate its role in ablation treatment. Methods Mathematical analysis was performed to generate the preoperative protocol which included the least ablation (sphere) number and the optimal overlapping mode and procedure for adequately ablating a large and spherical target lesion. The target ablation volume consisted of a tumor plus a 0.5- 1.0 cm tumor-free margin. The operation method for electrode placement was also described. Based on this mathematical protocol, 113 patients with 124 hepatic tumors [( 4.75? 0.92)cm in diameter, ranging from 3.6- 7.0 cm] were enrolled and treated. Seventy-one patients had 76 primary and 42 had 48 metastatic hepatic tumors. Results Totally 554 ablations (electrode placements) were performed in 124 tumors. The tumor complete necrosis rate was 87.9% (109/124), the local recurrence rate 24.2% (30/124), the estimated mean time to local recurrence 17.3 months. Twenty-five patients had received 38 retreatments for the local recurrence (17 received one time, and 8 received two or three times). Major complications were found in 7 patients (6.2 %). Of them, only one patient who suffered from colon perforation one week after RFA treatment required surgical intervention. Conclusions A theoretic basis and clinical guidance in RFA of hepatic tumors larger than 3.5 cm might be provided. Treatment results indicated that the protocol might probably be used to improve complete necrosis rate and reduce local recurrence rate in ablation therapy. The protocol was firmed effective and feasible.
Chinese Journal of Ultrasonography.1993;0(03):-.
1. ③Higher examining rate of Ar wave was detected in acute phase in KD. ④V D was improved reversibly in convalescence phase. ⑤MVF showed that only E/A in acute phase in KD was lower than that of normal group. Conclusions It is available and valuable to combine PVF and MVF to assess left ventricular diastolic function in KD.
Country
China
Publisher
中华医学会
ElectronicLinks
https://zhcsyxxzz.yiigle.com/Editor-in-chief
cs@hebmu.edu.cn
Abbreviation
Chinese Journal of Ultrasonography
Vernacular Journal Title
中华超声影像学杂志
ISSN
1004-4477
EISSN
Year Approved
2007
Current Indexing Status
Currently Indexed
Start Year
1992
Description
历史沿革【现用刊名：中华超声影像学杂志;创刊时间：1992】，该刊被以下数据库收录【中国科学引文数据库(CSCD—2008)】，核心期刊【中文核心期刊(2008)】。
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