scholarly journals Ультразвуковое исследование с контрастным усилением в оценке результатов радиочастотной абляции опухоли единственной почки

2020 ◽  
pp. 27-33
Keyword(s):  
Radiofrequency Ablation ◽  
Renal Tumor ◽  
Residual Tumor ◽  
Multiple Primary Cancers ◽  
Contrast Enhanced Ultrasound ◽  
Metachronous Cancer ◽  
Contrast Enhanced ◽  
Multiple Primary

Представлено клиническое наблюдение контроля процедуры радиочастотной абляции опухоли единственной почки с помо щью ультразвукового исследования с контрастным усилением. У пациента N., 49 лет, диагностирован первично-множественный метахронный рак. В 2010 г. проведена радикальная нефрэктомия правой почки (рак правой почки, рТ2N0M0, II стадия), в июне 2016 г. - радиочастотная абляция опухоли левой почки (рак левой почки, сТ1N0M0, I стадия). В сентябре 2016 г. (через 3 мес после радиочастотной абляции) проведено контрольное ультразвуковое исследование с контрастным усилением, которое продемонстрировало отсутствие контрастирования зоны абляции на протяжении артериальной и венозной фаз контрастирования паренхимы левой почки. В декабре 2016 г. (через 6 мес после радиочастотной абляции) данные ультразвукового исследования с контрастным усилением были подтверждены результатами компьютерной томографии с контрастированием. Представленное наблюдение демонстрирует возможности ультразвукового исследования с контраст ным усилением в качестве метода оценки результатов радиочастотной абляции опухолей почки, которое в перспективе можно рассматривать в качестве альтернативы компьютерной томографии с контрастированием и магнитно-резонансной томографии с контрастированием при невозможности выполнения этих методов. Ключевые слова: ультразвуковое исследование с контрастным усилением (КУУЗИ), радиочастотная абляция, опухоль почки, остаточная опухоль, первичномножественный рак, метахронный рак, contrast-enhanced ultrasound (CEUS), radiofrequency ablation, renal tumor, residual tumor, multiple primary cancers, metachronous cancer

scholarly journals Acoustic Radiation Force Impulse Elastography for Efficacy Evaluation after Hepatocellular Carcinoma Radiofrequency Ablation: A Comparative Study with Contrast-Enhanced Ultrasound

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Xiaohong Xu ◽  
Liangping Luo ◽  
Jiexin Chen ◽  
Jiexin Wang ◽  
Honglian Zhou ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Radiofrequency Ablation ◽  
Acoustic Radiation ◽  
Radiation Force ◽  
Residual Tumor ◽  
Acoustic Radiation Force ◽  
Acoustic Radiation Force Impulse ◽  
Contrast Enhanced Ultrasound ◽  
Efficacy Evaluation ◽  
Contrast Enhanced

Aim. To explore acoustic radiation force impulse (ARFI) elastography in assessing residual tumors of hepatocellular carcinoma (HCC) after radiofrequency ablation (RFA).Materials and Methods. There were 83 HCC lesions among 72 patients. All patients were examined with ARFI, contrast enhanced ultrasound (CEUS), and CT or MRI. Tumor brightness on virtual touch tissue imaging (VTI) and shear wave velocity (SWV) were assessed before and approximately one month after RFA.Results. There were 14 residual tumors after RFA. VTI showed that all the tumors were darker after RFA. VTI was not able to distinguish the ablated lesions and the residual tumors. 13 residual tumor lesions were detected by CEUS. All completely ablated nodules had SWV demonstration of x.xx., while with those residual nodules, 6 tumors had x.xx measurement and 8 tumors had measurable SWV. nine lesions with residual tumors occurred in cirrhosis subjects and 5 lesions with residual tumors occurred in fibrosis subjects; there was no residual tumor in the normal liver subjects.Conclusion. VTI technique cannot demonstrate residual tumor post RFA. While SWV measurement of less than x.xx is likely associated with residual tumors, measurement of less than x.xx cannot exclude residual tumors. Liver cirrhosis is associated with decreased chance of a complete ablation.

scholarly journals Dynamic Three-Dimensional Contrast-Enhanced Ultrasound to Predict Therapeutic Response of Radiofrequency Ablation in Hepatocellular Carcinoma: Preliminary Findings

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Jiaying Cao ◽  
Yi Dong ◽  
Feng Mao ◽  
Wenping Wang
Keyword(s):  
Hepatocellular Carcinoma ◽  
Radiofrequency Ablation ◽  
Therapeutic Response ◽  
Three Dimensional ◽  
Residual Tumor ◽  
Complete Response ◽  
Contrast Enhanced Ultrasound ◽  
Contrast Enhanced ◽  
Significant Difference ◽  
Mean Size

Background & Aims. To investigate the value of dynamic three-dimensional contrast-enhanced ultrasound (3D-CEUS) in the assessment of therapeutic response of hepatocellular carcinoma (HCC) treated with radiofrequency ablation (RFA).Methods. Forty-two patients (31 men and 11 women; mean age (52.1 ± 13.1 years)) with 42 clinical diagnosed HCC lesions (size range 14-48 mm; mean size 28.4 ± 9.9 mm) treated by RFA were included. All patients underwent two-dimensional contrast-enhanced ultrasound (2D-CEUS) and 3D-CEUS 1 month after treatment. Two radiologists assessed the absence (complete response, CR) or presence (residual tumor, RT) of any arterially hyperenhancing nodules within or along the margin of the treated HCC lesions. Complete response on magnetic resonance (MR) imaging acted as standard of reference (SOR).Results. After RFA treatment, 3D-CEUS was successfully conducted in 34 HCC lesions. CR was observed on both 2D-CEUS and 3D-CEUS in 25/42 (59.5%) HCC and RT in 6/42 (14.3%) HCC lesions. In 3/42 (7.1%) HCC lesion, RT was documented by SOR and 3D-CEUS, but it was not appreciable at 2D-CEUS. In 3/42 (7.1%) HCC lesion, the presence of peripheral RT was suspected by both 2D-CEUS and 3D-CEUS, but it was not confirmed by SOR. No statistically significant difference between 2D-CEUS and 3D-CEUS in depicting either CR or RT was found (P= 0.25). Combined with dynamic 3D-CEUS, the diagnostic accuracy was improved from 85.7% to 92.9%.Conclusions. 3D-CEUS might be helpful in better diagnostic performance in the assessment of therapeutic response of HCC treated after RFA.

1929: Contrast Enhanced Ultrasound Monitoring of Radiofrequency Ablation

2004 ◽  
Vol 171 (4S) ◽  
pp. 509-510
Author(s):  
D Brooke Johnson ◽  
David A. Duchene ◽  
Grant D. Taylor ◽  
Jeffrey A. Cadeddu
Keyword(s):  
Radiofrequency Ablation ◽  
Contrast Enhanced Ultrasound ◽  
Ultrasound Monitoring ◽  
Contrast Enhanced

scholarly journals Reproducibility of Ablated Volume Measurement Is Higher with Contrast-Enhanced Ultrasound than with B-Mode Ultrasound after Benign Thyroid Nodule Radiofrequency Ablation—A Preliminary Study

2020 ◽  
Vol 9 (5) ◽  
pp. 1504 ◽  
Author(s):  
Simone Schiaffino ◽  
Francesca Serpi ◽  
Duccio Rossi ◽  
Valerio Ferrara ◽  
Ciriaco Buonomenna ◽  
...  
Keyword(s):  
Radiofrequency Ablation ◽  
Thyroid Nodules ◽  
Observer Agreement ◽  
Contrast Enhanced Ultrasound ◽  
Limits Of Agreement ◽  
Contrast Enhanced ◽  
The Mean ◽  
Preliminary Study ◽  
Benign Thyroid Nodules ◽  
Benign Thyroid

The reproducibility of contrast-enhanced ultrasound (CEUS) and standard B-mode ultrasound in the assessment of radiofrequency-ablated volume of benign thyroid nodules was compared. A preliminary study was conducted on consecutive patients who underwent radiofrequency ablation (RFA) of benign thyroid nodules between 2014 and 2016, with available CEUS and B-mode post-ablation checks. CEUS and B-mode images were retrospectively evaluated by two radiologists to assess inter- and intra-observer agreement in the assessment of ablated volume (Bland–Altman test). For CEUS, the mean inter-observer difference (95% limits of agreement) was 0.219 mL (-0.372–0.809 mL); for B-mode, the mean difference was 0.880 mL (-1.655–3.414 mL). Reproducibility was significantly higher for CEUS (85%) than for B-mode (27%). Mean intra-observer differences (95% limits of agreement) were 0.013 mL (0.803–4.097 mL) for Reader 1 and 0.031 mL (0.763–3.931 mL) for Reader 2 using CEUS, while they were 0.567 mL (-2.180–4.317 mL, Reader 1) and 0.759 mL (-2.584–4.290 mL, Reader 2) for B-mode. Intra-observer reproducibility was significantly higher for CEUS (96% and 95%, for the two readers) than for B-mode (21% and 23%). In conclusion, CEUS had higher reproducibility and inter- and intra-observer agreement compared to conventional B-mode in the assessment of radiofrequency-ablated volume of benign thyroid nodules.

REAL-TIME CONTRAST ENHANCED ULTRASOUND GUIDED RADIOFREQUENCY ABLATION OF CANINE PROSTATE: PILOT SURVIVAL STUDY

2009 ◽  
Vol 181 (4) ◽  
pp. 613
Author(s):  
Edouard J Trabulsi ◽  
Chengrong Mi ◽  
Xiang Jing ◽  
Shumin Wang ◽  
Leonard G Gomella ◽  
...  
Keyword(s):  
Radiofrequency Ablation ◽  
Real Time ◽  
Contrast Enhanced Ultrasound ◽  
Ultrasound Guided ◽  
Survival Study ◽  
Contrast Enhanced

Differentiation of Renal Tumor Histotypes: Usefulness of Quantitative Analysis of Contrast-Enhanced Ultrasound

2015 ◽  
Vol 205 (3) ◽  
pp. W335-W342 ◽  
Author(s):  
Qing Lu ◽  
Bei-jian Huang ◽  
Li-yun Xue ◽  
Pei-li Fan ◽  
Wen-ping Wang
Keyword(s):  
Quantitative Analysis ◽  
Renal Tumor ◽  
Contrast Enhanced Ultrasound ◽  
Contrast Enhanced
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