scholarly journals Ultrasonic diagnosis of soft tissue sarcomas using functional vascular test

2019 ◽  
pp. 126-132
Author(s):  
A. N. Zaitsev ◽  
I. I. Semenov
Keyword(s):  
Blood Flow ◽  
Soft Tissue ◽  
Color Doppler ◽  
Spectral Characteristics ◽  
Power Doppler ◽  
Soft Tissue Sarcomas ◽  
Diagnostic Tools ◽  
Entire Complex ◽  
Inflammatory Processes ◽  
Total Sensitivity

The purpose of the research is to find additional diagnostic tools that allow you to specify the nature of soft tissue lesions, differentiate between benign and malignant processes this localization.Materials and methods. Using multiparametric echography surveyed 514 patients with malignant (243 or 55.7%) and benign (193 or 44.3%) tumor, as well as non-tumor (78 or 15.2%) diseases. In all cases, used while rendering, color Doppler mapping, power Doppler blood flow spectral characteristics of the studied zone changes. In 87 (16.9%) observations applied functional vascular test.The results. Calculation of indicators diagnostic informative at diagnostics of sarcomas in relation to complex high without the use of vascular test and when you post data showed an increase in using it specificity and diagnostic accuracy stability in the total sensitivity of the entire complex. Sensitivity respectively amounted to 92.7% and 92.7%, specificity – 87.1% and 98.9%, accuracy-84.8% and 91.1% (inclusion in consideration of inflammatory processes led to the authenticity of the results obtained).Conclusion. Vascular test improves diagnostic high informativeness of the complex, but it can be usefully applied to exclude non-tumorous changes and accounting possible differences in differentiation of different constituent parts neoplasm.

scholarly journals Three-dimensional Power Doppler Ultrasound Study of the Placenta

2014 ◽  
Vol 8 (4) ◽  
pp. 400-409
Author(s):  
Toshiyuki Hata ◽  
Sarah Cajusay-Velasco
Keyword(s):  
Blood Flow ◽  
Doppler Ultrasound ◽  
Color Doppler ◽  
Power Doppler ◽  
Three Dimensional ◽  
Morphological Characteristics ◽  
Power Doppler Ultrasound ◽  
Placental Perfusion ◽  
Ultrasound Study ◽  
3D Power Doppler

ABSTRACT Advanced ultrasound technology has been a valuable tool in the assessment of placental anatomy and physiology. Conventional two-dimensional (2D) sonography reveals placental morphological characteristics, 2D color Doppler can assess blood flow in the placenta, 2D power Doppler can evaluate placental vascular trees, and three-dimensional (3D) ultrasound gives more detailed information on the surface anatomy. Recent advances, such as 3D power Doppler with virtual organ computer aided-analysis (VOCAL) and histogram analysis can measure the placental volume, and assess uteroplacental and fetoplacental perfusions. In particular, ‘placental vascular sonobiopsy’ can specifically evaluate the second- and thirdtrimester placental blood flow and vascularity by obtaining several spherical samples from the placenta that will represent the entire placenta. This article presents normal placental development and pathological findings of the placenta using 3D power Doppler ultrasound, and discusses 3D power Doppler assessments of placental perfusion in high-risk pregnancies, such as fetal growth restriction, pregnancy-induced hypertension and preeclampsia, and, from this basis, re-establishes the importance of 3D power Doppler ultrasound as a screening, diagnostic, and surveillance tool in normal and abnormal pregnancies. How to cite this article Tanaka H, Cajusay-Velasco S, Noguchi J, Hata T. Three-dimensional Power Doppler Ultrasound Study of the Placenta. Donald School J Ultrasound Obstet Gynecol 2014;8(4):400-409.

scholarly journals Evaluation of Multimode Color Doppler Flow Imaging in the Diagnosis of Solid Renal Tumor

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Ming Chen ◽  
Xiaohong Fu ◽  
Yan Shen
Keyword(s):  
Blood Flow ◽  
Sensitivity And Specificity ◽  
Renal Tumor ◽  
Color Doppler ◽  
Power Doppler ◽  
Renal Tumors ◽  
Flow Imaging ◽  
Color Doppler Flow Imaging ◽  
Doppler Flow ◽  
Color Doppler Flow

Background. Renal cell carcinoma is one of the most common malignant tumors in urinary system, seriously affecting people’s health and life. This study aimed to evaluate the clinical value of multi-mode color Doppler flow imaging for diagnosis of solid renal tumor. Methods. Sixty-six renal solid tumors from 63 patients were examined by color Doppler flow imaging (CDFI), power Doppler flow imaging (PDFI), superb microvascular imaging (SMI), and contrast-enhanced ultrasound (CEUS) before surgery. The diagnostic efficacy of the four methods was compared by determining blood flow grade and ring-like blood flow with Adler’s method. Chi-square test and Fisher’s test were performed to compare the results of sensitivity and specificity among four methods. Results. Statistically significant differences in blood flow grade and ring-like blood flow were observed between benign and malignant renal tumors as detected by SMI and CEUS ( P  < 0.05), whereas no difference was found as detected by CDFI and PDFI ( P  > 0.05). The results indicated that the sensitivity and specificity of SMI (82.46%, 88.89%) and CEUS (84.21%, 88.89%) were higher than those of CDFI (42.11%, 66.67%) and PDFI (47.37%, 77.78%). Compared with the abilities of CDFI and PDFI, SMI and CEUS can better display the micro-blood flow in the tumors and evaluate the blood flow grading, which indicated that SMI and CEUS may have high values in the differential diagnosis of benign and malignant solid renal tumors. Conclusion. SMI and CEUS can improve the sensitivity and specificity of the diagnosis of benign and malignant renal tumors and have a high application value.

scholarly journals High-frequency sonography in the evaluation of nail psoriasis.

2016 ◽  
Vol 18 (3) ◽  
pp. 312 ◽  
Author(s):  
Mihaela Elena Marina ◽  
Carolina Botar Jid ◽  
Sorana Daniela Bolboaca ◽  
Corina Bocsa ◽  
Carmen Mihaela Mihu ◽  
...  
Keyword(s):  
Blood Flow ◽  
High Frequency ◽  
Color Doppler ◽  
Plate Thickness ◽  
Power Doppler ◽  
Psoriasis Patient ◽  
Nail Plate ◽  
Resistance Index ◽  
Doppler Imaging ◽  
Nail Involvement

Aim: To evaluate the morphostructural aspects and nail vascularity in the nail unit of patients with psoriasis, and to evaluate whether there are differences among psoriatic patients with and without nail involvement. Material and methods: Nail plates and nail bed changes, nailfold vessel resistance index (NVRI), power and color Doppler blood flow appearances were investigated in 23 patients with moderate-to-severe psoriasis, with and without nail involvement, and compared to those of 11 healthy participants. Results: Ventral nail plate deposits were present only in psoriasis patients. Irregular or totally fused nail plates and increased nail plate thickness was frequently observed in psoriasis patients compared to controls. NVRI was increased in psoriatic patients’ nails compared to controls (0.62 vs. 0.57, p<0.0001). In the psoriasis patient group there was significant statistical difference in NVRI in patients with nail involvement compared to those without (0.66 vs. 0.55, p<0.0001). Conclusions: High-frequency gray scale sonography provides valuable information regarding morphostructural changes in nail unit structure in patients with psoriasis. Power Doppler imaging enables blood flow assessment in psoriasis nail induced changes.

Effect of ultrasound contrast medium in color doppler and power doppler visualization of blood flow in canine kidneys

1997 ◽  
Vol 38 (3) ◽  
pp. 445-453 ◽  
Author(s):  
A. Abildgaard ◽  
N. -E. Kløw ◽  
J. Å. Jakobsen ◽  
T. S. Egge ◽  
M. Eriksen
Keyword(s):  
Blood Flow ◽  
Contrast Medium ◽  
Color Doppler ◽  
Power Doppler ◽  
Ultrasound Contrast ◽  
Ultrasound Contrast Medium

Blood flow of human soft tissue sarcomas measured by thallium-201 scanning: Prediction of tumor response to radiation

1991 ◽  
Vol 20 (3) ◽  
pp. 593-597 ◽  
Author(s):  
Kazuhara Nishizawa ◽  
Paul Okunieff ◽  
David Elmaleh ◽  
Kenneth A. McKusick ◽  
H.William Strauss ◽  
...  
Keyword(s):  
Blood Flow ◽  
Soft Tissue ◽  
Tumor Response ◽  
Soft Tissue Sarcomas ◽  
Thallium 201 ◽  
Human Soft Tissue
Sign in / Sign up

Export Citation Format

Share Document