scholarly journals Эхокардиография с контрастным усилением для оценки сократимости левого желудочка у больного с блокадой левой ножки пучка Гиса

2017 ◽  
pp. 59-65
Keyword(s):  
Contrast Agents ◽  
Left Bundle Branch Block ◽  
Wall Motion ◽  
Regional Wall Motion ◽  
Ultrasound Contrast Agents ◽  
Bundle Branch Block ◽  
Regional Wall ◽  
Ultrasound Contrast ◽  
Contrast Enhanced ◽  
Contrast Enhanced Echocardiography

Представлен клинический случай использования эхокардиографии с контрастным усилением в визуализации левого желудочка с целью исключения нарушений локальной сократимости у пациента с впервые возникшей полной блокадой левой ножки пучка Гиса. При рутинном двумерном эхокардиографическом исследовании на основе сниженной амплитуды движения стенки в средних перегородочных сегментах были заподозрены нарушения локальной сократимости левого желудочка. Эхокардиография с контрастным усилением позволила отчетливо визуализировать эндокардиальную и эпикардиальную поверхности миокарда и на основании анализа систолического утолщения миокарда исключить наличие нарушений локальной сократимости левого желудочка. Ключевые слова: эхокардиография, эхокардиография с контрастным усилением, внутривенные ультразвуковые контрастные препараты, блокада левой ножки пучка Гиса, нарушения локальной сократимости, echocardiography, contrast-enhanced echocardiography, intravenous ultrasound contrast agents, left bundle branch block, regional wall motion abnormality

scholarly journals Recent Experiences and Advances in Contrast-Enhanced Subharmonic Ultrasound

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
John R. Eisenbrey ◽  
Anush Sridharan ◽  
Ji-Bin Liu ◽  
Flemming Forsberg
Keyword(s):  
Contrast Agents ◽  
Tumor Imaging ◽  
Three Dimensional ◽  
Ultrasound Contrast Agents ◽  
Surrounding Tissue ◽  
Contrast Enhanced Ultrasound ◽  
Ultrasound Contrast ◽  
Contrast Enhanced ◽  
Subharmonic Response

Nonlinear contrast-enhanced ultrasound imaging schemes strive to suppress tissue signals in order to better visualize nonlinear signals from blood-pooling ultrasound contrast agents. Because tissue does not generate a subharmonic response (i.e., signal at half the transmit frequency), subharmonic imaging has been proposed as a method for isolating ultrasound microbubble signals while suppressing surrounding tissue signals. In this paper, we summarize recent advances in the use of subharmonic imagingin vivo. These advances include the implementation of subharmonic imaging on linear and curvilinear arrays, intravascular probes, and three-dimensional probes for breast, renal, liver, plaque, and tumor imaging.

scholarly journals Window-Modulated Compounding Nakagami Parameter Ratio Approach for Assessing Muscle Perfusion with Contrast-Enhanced Ultrasound Imaging

Sensors ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 3584
Author(s):  
Huang-Chen Lin ◽  
Shyh-Hau Wang
Keyword(s):  
Contrast Agents ◽  
Ultrasound Imaging ◽  
Ultrasound Contrast Agents ◽  
Muscle Disease ◽  
Contrast Enhanced Ultrasound ◽  
Time Intensity Curve ◽  
Muscle Perfusion ◽  
Ultrasound Contrast ◽  
Parameter Ratio ◽  
Contrast Enhanced

The assessment of microvascular perfusion is essential for the diagnosis of a specific muscle disease. In comparison with the current available medical modalities, the contrast-enhanced ultrasound imaging is the simplest and fastest means for probing the tissue perfusion. Specifically, the perfusion parameters estimated from the ultrasound time-intensity curve (TIC) and statistics-based time–Nakagami parameter curve (TNC) approaches were found able to quantify the perfusion. However, due to insufficient tolerance on tissue clutters and subresolvable effects, these approaches remain short of reproducibility and robustness. Consequently, the window-modulated compounding (WMC) Nakagami parameter ratio imaging was proposed to alleviate these effects, by taking the ratio of WMC Nakagami parameters corresponding to the incidence of two different acoustic pressures from an employed transducer. The time–Nakagami parameter ratio curve (TNRC) approach was also developed to estimate perfusion parameters. Measurements for the assessment of muscle perfusion were performed from the flow phantom and animal subjects administrated with a bolus of ultrasound contrast agents. The TNRC approach demonstrated better sensitivity and tolerance of tissue clutters than those of TIC and TNC. The fusion image with the WMC Nakagami parameter ratio and B-mode images indicated that both the tissue structures and perfusion properties of ultrasound contrast agents may be better discerned.

scholarly journals EFSUMB 2020 Proposal for a Contrast-Enhanced Ultrasound-Adapted Bosniak Cyst Categorization – Position Statement

2020 ◽  
Author(s):  
Vito Cantisani ◽  
Michele Bertolotto ◽  
Dirk-André Clevert ◽  
Jean-Michel Correas ◽  
Francesco Maria Drudi ◽  
...  
Keyword(s):  
Contrast Agents ◽  
Task Force ◽  
Position Statement ◽  
Ultrasound Contrast Agents ◽  
Renal Lesions ◽  
Ultrasound Contrast ◽  
Contrast Enhanced ◽  
Enhanced Computed Tomography ◽  
Contrast Enhanced Computed Tomography ◽  
Cystic Renal Lesions

AbstractThe well-established Bosniak renal cyst classification is based on contrast-enhanced computed tomography determining the malignant potential of cystic renal lesions. Ultrasound has not been incorporated into this pathway. However, the development of ultrasound contrast agents coupled with the superior resolution of ultrasound makes it possible to redefine the imaging of cystic renal lesions. In this position statement, an EFSUMB Expert Task Force reviews, analyzes, and describes the accumulated knowledge and limitations and presents the current position on the use of ultrasound contrast agents in the evaluation of cystic renal lesions.

Book Reviews

1998 ◽  
Vol 39 (2) ◽  
pp. 208-210
Keyword(s):  
New York ◽  
Differential Diagnosis ◽  
Contrast Agents ◽  
Acute Abdomen ◽  
Ultrasound Contrast Agents ◽  
Clinical Imaging ◽  
Ultrasound Contrast ◽  
Contrast Enhanced ◽  
Contrast Enhanced Mri

Manual of Radiology. Acute Problems and Essential Procedures.: Edited by J. Eng. 351 pages. Lippincott-Raven 1997. ISBN 0-397-51768-8. Price, softbound: USD 34.50. Reviewed by Rickard Nyman Contrast Sonography in Gynaecology. Edited by F. Degerhardt. 96 pages, 99 illustrations, 5 coloured graphs, 17 tables. Thieme Verlag 1996. ISBN 0-86577-704-7. Price: DEM 148. Reviewed by Paul Nilsson Clinical Imaging, an Atlas of Differential Diagnosis. 3rd edn. Edited by R. L. Eisenberg. 1246 pages, Lippincott-Raven 1997. ISBN 0-397-51679-7. Price, hardbound: USD 206. Reviewed by Rickard Nyman Basic Radiology. Edited by M. Y. M. Chen et al. McGraw-Hill 1996. ISBN 0-07-011148-0. Price: GBP 34.50. Reviewed by Sven Nilsson. Contrast-Enhanced MRI of the Breast, 2nd den. by S. H. Heywang-Kobrunner and R. Beck. 229 pages. Springer-Verlag 1996. ISBN 3-540-58975-9. Price, hardcover: DEM 148. Reviewed by Per Skaane Radiology of Trauma. Edited by M. Heller and A. Fink. Springer-Verlag 1997. ISBN 3-540-5932-1. Price: DEM 298. Reviewed by Rickard Nyman CT and Sonography of the Acute Abdomen, 2nd edn. by R. Brooke Jeffrey Jr and Philip W. Ralls. Lippincott-Raven, New York 1996. ISBN 0-7817-0287-9. Price: USD 144. Reviewed by Anders Elvin Ultrasound Contrast Agents. Edited by B. Goldberg. Martin Dunitz Publishers, London 1996. ISBN 1-85317-283-9. Hardcover. Reviewed by Pave1 Pinkava and Anders Elvin

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