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Lupușoru R, Sporea I, Rațiu I, Lungeanu D, Popescu A, Dănilă M, Mare R, Marc L, Lascău A, Moga TV, Bende F, Ghiuchici AM, Șirli R. Contrast-Enhanced Ultrasonography with Arrival Time Parametric Imaging as a Non-Invasive Diagnostic Tool for Liver Cirrhosis. Diagnostics (Basel) 2022; 12:diagnostics12123013. [PMID: 36553020 PMCID: PMC9777167 DOI: 10.3390/diagnostics12123013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/23/2022] [Accepted: 11/26/2022] [Indexed: 12/05/2022] Open
Abstract
Liver biopsy is the gold standard method for staging liver fibrosis, but it is an invasive procedure that is associated with some complications. There are also non-invasive techniques for assessing liver fibrosis, such as elastography and biological tests, but these techniques can fail in detection or generate false measurements depending on the subject’s condition. This study aimed to determine whether liver fibrosis can be evaluated using contrast-enhanced ultrasonography with arrival time parametric imaging using the ultrasound machine’s parametric image software, the method being called (CEUS-PAT). CEUS-PAT was performed on each subject using SonoVue as a contrast agent, and images showing liver parenchyma and the right kidney on a single screen were used for analysis in parametric imaging, which was performed using the proprietary software of the ultrasound system. The ratio between the kidney and liver arrival times was calculated. The study included 64 predominantly male (56.3%) subjects, 37 cirrhotic patients, and 27 healthy volunteers, with a mean age of 58.98 ± 8.90 years. Significant differences were found between the liver cirrhosis and healthy groups regarding CEUS-PAT, 0.83 ± 0.09 vs. 0.49 ± 0.11, p < 0.0001. The correlation between CEUS-PAT and VCTE was r = 0.81. The optimal cut-off value for detecting liver cirrhosis was >0.7, with an AUC of 0.98, p < 0.001, Se = 89.19%, Sp = 100%, PPV = 100%, and NPV = 87.1%. We demonstrate that CEUS-PAT achieves excellent performance in diagnosing liver cirrhosis and is a fast method for diagnosing liver cirrhosis that can even be applied in situations where the use of other methods is excluded.
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Affiliation(s)
- Raluca Lupușoru
- Center for Modeling Biological Systems and Data Analysis, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Department of Functional Sciences, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Department of Internal Medicine II, Division of Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Ioan Sporea
- Advanced Regional Research Center in Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Iulia Rațiu
- Department of Internal Medicine II, Division of Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Advanced Regional Research Center in Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Gastroenterology and Hepatology Clinic, County Emergency Hospital “Pius Brinzeu”, 300723 Timisoara, Romania
- Correspondence: (I.R.); (D.L.); Tel.: +40-722-192-210 (I.R.); +40-073-391-2028 (D.L.)
| | - Diana Lungeanu
- Center for Modeling Biological Systems and Data Analysis, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Correspondence: (I.R.); (D.L.); Tel.: +40-722-192-210 (I.R.); +40-073-391-2028 (D.L.)
| | - Alina Popescu
- Department of Internal Medicine II, Division of Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Advanced Regional Research Center in Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Gastroenterology and Hepatology Clinic, County Emergency Hospital “Pius Brinzeu”, 300723 Timisoara, Romania
| | - Mirela Dănilă
- Department of Internal Medicine II, Division of Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Advanced Regional Research Center in Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Gastroenterology and Hepatology Clinic, County Emergency Hospital “Pius Brinzeu”, 300723 Timisoara, Romania
| | - Ruxandra Mare
- Department of Internal Medicine II, Division of Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Advanced Regional Research Center in Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Gastroenterology and Hepatology Clinic, County Emergency Hospital “Pius Brinzeu”, 300723 Timisoara, Romania
| | - Luciana Marc
- Department of Internal Medicine II, Division of Nephrology, “Victor Babeș” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Centre for Molecular Research in Nephrology and Vascular Disease, Faculty of Medicine, “Victor Babeș” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Nephrology Clinic, County Emergency Hospital “Pius Brinzeu”, 300723 Timisoara, Romania
| | - Andrada Lascău
- Discipline of Accounting and Information System, Faculty of Economics and Business Administration, West University of Timisoara, 300115 Timisoara, Romania
| | - Tudor Voicu Moga
- Department of Internal Medicine II, Division of Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Advanced Regional Research Center in Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Gastroenterology and Hepatology Clinic, County Emergency Hospital “Pius Brinzeu”, 300723 Timisoara, Romania
| | - Felix Bende
- Department of Internal Medicine II, Division of Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Advanced Regional Research Center in Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Gastroenterology and Hepatology Clinic, County Emergency Hospital “Pius Brinzeu”, 300723 Timisoara, Romania
| | - Ana-Maria Ghiuchici
- Department of Internal Medicine II, Division of Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Advanced Regional Research Center in Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Gastroenterology and Hepatology Clinic, County Emergency Hospital “Pius Brinzeu”, 300723 Timisoara, Romania
| | - Roxana Șirli
- Department of Internal Medicine II, Division of Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Advanced Regional Research Center in Gastroenterology and Hepatology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Gastroenterology and Hepatology Clinic, County Emergency Hospital “Pius Brinzeu”, 300723 Timisoara, Romania
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Duan T, Chen X, Wu J, Li R, Guo H, Du J, Guo J. Serum carbohydrate antigen 72-4 concentrations decrease with age in females but not in males in Beijing, China. Ann Clin Biochem 2021; 58:556-562. [PMID: 34120477 DOI: 10.1177/00045632211026961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Carbohydrate antigen 72-4 (CA72-4) is widely used in the diagnosis and monitoring of many cancers. However, there are few studies on the differences of CA72-4 concentrations in terms of age and gender. METHODS A total of 10,957 healthy subjects were divided into two groups according to gender and three age groups. The serum CA72-4 were detected. Statistical analysis was performed by SPSS. RESULTS The CA72-4 concentration in female group was significantly higher than that in male group. The concentration of CA72-4 gradually decreased with age. Compared with the age >60 group, the CA72-4 concentrations were increased in the age 46-60 group and 16-45 group (P >0.05, respectively). To better observe the age difference, the age 16-45 and 46-60 groups were combined into the age 16-60 group. In comparison to the age >60 group, the CA72-4 concentration of age 16-60 group was significantly increased (P = 0.000). In the age >60 group, there was no difference between genders. Nevertheless, the difference between the sexes in the age 16-60 group was significant (P = 0.023). CONCLUSIONS The reference interval of CA72-4 for local healthy population was established. CA72-4 concentrations gradually decreased with the increase of age, and CA72-4 concentration in females aged 16-60 years (0-18.0 U/mL) was higher than in males (0-14.5 U/mL); however, there was no gender difference in the age group above 60 years old (0-14.5 U/mL). Moreover, in male CA72-4 there was no significant difference among all age groups, while the potential mechanism of female changes with age needs further study.
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Affiliation(s)
- Tongmei Duan
- Clinical Laboratory Center, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China.,Department of Clinical Laboratory, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xun Chen
- Clinical Laboratory Center, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jing Wu
- Clinical Laboratory Center, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ronghai Li
- Clinical Laboratory Center, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Huijuan Guo
- Clinical Laboratory Center, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Juan Du
- Clinical Laboratory Center, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jie Guo
- Department of Clinical Laboratory, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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Gregory J, Paisant A, Paulatto L, Raynaud L, Bertin C, Kerbaol A, Vullierme MP, Paradis V, Vilgrain V, Ronot M. Limited added value of contrast-enhanced ultrasound over B-mode for the subtyping of hepatocellular adenomas. Eur J Radiol 2020; 128:109027. [PMID: 32361381 DOI: 10.1016/j.ejrad.2020.109027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 03/30/2020] [Accepted: 04/15/2020] [Indexed: 12/21/2022]
Abstract
PURPOSE To compare the features of hepatocellular adenoma subtypes (HCAs) in B-mode and contrast-enhanced ultrasound (CEUS). METHOD Thirty-three patients (31 women [94 %] and two men [6%], median age [Q1-Q3] 43.5 years old [35-51]) with 44 pathologically proven and subtyped HCAs (including 29 inflammatory HCAs [I-HCA] and 15 HNF1-α inactivated HCAs [H-HCA]) who underwent CEUS were included. The features of HCA on B-mode and CEUS were independently reviewed by two radiologists and compared between HCA subtypes. RESULTS I-HCAs were mostly hypoechoic (23/29, 79 %) or isoechoic (4/29, 14 %) with B-mode. Twelve of them (41 %) were heterogeneous. All H-HCAs except one demonstrated homogeneous hyperechogenicity (93 %) (p = 0.001). Moderate or marked liver steatosis was only observed in I-HCAs (12/29, 41 %) (p = 0.001). Arterial hyperenhancement was observed on CEUS in 27/29 (93 %) I-HCAs and in 14/15 (93 %) H-HCAs (p=0.98). Washout was present in 6/29 (21 %) I-HCAs and 1/15 (7%) H-HCAs (p=0.27). A total of 23/29 (79 %) I-HCAs and 15/15 (100 %) HCAs were homogeneous on portal and delayed phase acquisitions (p=0.04). The specificity for identifying an H-HCA was 100 % when the lesion was homogeneous and hyperechoic on B-mode, and the sensibility to rule out an H-HCA was 100 % if neither of these two features was present in a liver with obvious steatosis. CONCLUSIONS Most CEUS features, especially enhancement patterns, do not significantly differ between HCA subtypes. When HCA is suspected on CEUS, B-mode features should be considered, and a combination of lesion hyperechogenicity, homogeneity and the absence of obvious liver steatosis may be useful to distinguish H-HCAs from I-HCAs.
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Affiliation(s)
- Jules Gregory
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Nord Val de Seine, Hôpital Beaujon, Clichy, France; Université de Paris, Faculté de Médecine, Paris, France
| | - Anita Paisant
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Nord Val de Seine, Hôpital Beaujon, Clichy, France
| | - Luisa Paulatto
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Nord Val de Seine, Hôpital Beaujon, Clichy, France
| | - Lucas Raynaud
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Nord Val de Seine, Hôpital Beaujon, Clichy, France
| | - Caroline Bertin
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Nord Val de Seine, Hôpital Beaujon, Clichy, France
| | - Anne Kerbaol
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Nord Val de Seine, Hôpital Beaujon, Clichy, France
| | - Marie-Pierre Vullierme
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Nord Val de Seine, Hôpital Beaujon, Clichy, France; Université de Paris, Faculté de Médecine, Paris, France
| | - Valérie Paradis
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Nord Val de Seine, Hôpital Beaujon, Clichy, France; Université de Paris, Faculté de Médecine, Paris, France; INSERM U1149, Centre de Recherche de l'Inflammation (CRI), Paris, France
| | - Valérie Vilgrain
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Nord Val de Seine, Hôpital Beaujon, Clichy, France; Université de Paris, Faculté de Médecine, Paris, France; INSERM U1149, Centre de Recherche de l'Inflammation (CRI), Paris, France
| | - Maxime Ronot
- Assistance Publique - Hôpitaux de Paris, Hôpitaux Universitaires Paris Nord Val de Seine, Hôpital Beaujon, Clichy, France; Université de Paris, Faculté de Médecine, Paris, France; INSERM U1149, Centre de Recherche de l'Inflammation (CRI), Paris, France.
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Zhang H, Wang J, Guo R. Application Value of Color Doppler Ultrasound and Ultrasound Contrast in the Differential Diagnosis of Ovarian tumor. Pak J Med Sci 2020; 36:80-84. [PMID: 32063936 PMCID: PMC6994900 DOI: 10.12669/pjms.36.2.847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objective: To study the value of color Doppler ultrasound and ultrasound contrast in differential diagnosis of ovarian tumors. Methods: Ninety-six patients with ovarian tumors who were treated in our hospital from May 2017 to July 2018 and confirmed by pathological examination were selected as the research subjects. All patients were examined by color Doppler ultrasound and ultrasound contrast. The sensitivity, specificity and accuracy of the two methods were compared, and the parameters of ultrasound contrast in the diagnosis of benign and malignant tumors were observed and compared. Results: The sensitivity, specificity and accuracy of ultrasound contrast in the diagnosis of ovarian tumors were higher than those of color Doppler ultrasound (P<0.05). There were significant differences in the time of initiation enhancement, time to peak and perfusion intensity in the diagnosis of benign and malignant lesions by ultrasound contrast (P<0.05). Conclusion: In the differential diagnosis of ovarian tumors, ultrasound contrast has more advantages than color Doppler ultrasound in displaying the blood perfusion information of tumors. It has high diagnostic accuracy and clinical application value.
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Affiliation(s)
- Haijing Zhang
- Haijing Zhang, Department of Ultrasonic Medicine, Binzhou People's Hospital, Shandong, 256610, China
| | - Jinming Wang
- Jinming Wang, Department of Ultrasonic Medicine, Binzhou People's Hospital, Shandong, 256610, China
| | - Rui Guo
- Rui Guo, Department of Ultrasonic Medicine, Binzhou People's Hospital, Shandong, 256610, China
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Sheu R, Peterson C, Hall M, Liu M, Cormican D. Ultrasonic Enhancing Agents for the Cardiothoracic Anesthesiologist: A Focused Review of the 2018 American Society of Echocardiography Guidelines Update. J Cardiothorac Vasc Anesth 2019; 33:755-767. [DOI: 10.1053/j.jvca.2018.08.197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Indexed: 01/30/2023]
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Zarzour JG, Porter KK, Tchelepi H, Robbin ML. Contrast-enhanced ultrasound of benign liver lesions. Abdom Radiol (NY) 2018; 43:848-860. [PMID: 29167944 DOI: 10.1007/s00261-017-1402-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Liver lesions are often incidentally detected on ultrasound examination and may be incompletely characterized, requiring further imaging. Contrast-enhanced ultrasound (CEUS) was recently approved by the Food and Drug Administration in the United States for liver lesion characterization. CEUS has the ability to characterize focal liver lesions and has been shown to be superior to color Doppler and power Doppler ultrasound in the detection of tumor vascularity. Differentiating benign from malignant liver lesions is essential to characterizing liver lesions. The CEUS imaging characteristics of benign liver lesions are reviewed, including hepatic cysts, hemangiomas, focal fat, focal nodular hyperplasia, hepatocellular adenomas, abscesses, and traumatic lesions.
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Affiliation(s)
- Jessica G Zarzour
- Department of Radiology, University of Alabama at Birmingham, 619 19th Street South, JTN 338, Birmingham, AL, 35294, USA.
| | - Kristin K Porter
- Department of Radiology, University of Alabama at Birmingham, 619 19th Street South, JTN 338, Birmingham, AL, 35294, USA
| | - Hisham Tchelepi
- Department of Radiology, University of Southern California, Los Angeles, USA
| | - Michelle L Robbin
- Department of Radiology, University of Alabama at Birmingham, 619 19th Street South, JTN 338, Birmingham, AL, 35294, USA
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Borusewicz P, Stańczyk E, Kubiak K, Spużak J, Glińska-Suchocka K, Jankowski M, Nicpoń J, Podgórski P. Liver enhancement in healthy dogs after gadoxetic acid administration during dynamic contrast-enhanced magnetic resonance imaging. Vet J 2018; 235:16-21. [PMID: 29704934 DOI: 10.1016/j.tvjl.2018.03.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 03/05/2018] [Accepted: 03/11/2018] [Indexed: 12/23/2022]
Abstract
Dynamic contrast enhanced (DCE)-magnetic resonance imaging (MRI) consists of acquisition of native baseline images, followed by a series of acquisitions performed during and after administration of a contrast medium. DCE-MRI, in conjunction with hepatobiliary-specific contrast media, such as gadoxetic acid (GD-EOB-DTPA), allows for precise characterisation of the enhancement pattern of the hepatic parenchyma following administration of the contrast agent. The aim of the study was to assess the pattern of temporal resolution contrast enhancement of the hepatic parenchyma following administration of GD-EOB-DTPA and to determine the optimal time window for post-contrast assessment of the liver. The study was carried out on eight healthy beagle dogs. MRI was performed using a 1.5T scanner. The imaging protocol included T1 weighted (T1-W) gradient echo (GRE), T2 weighted (T2-W) turbo spin echo (TSE) and dynamic T1-W GRE sequences. The dynamic T1-W sequence was performed using single 10mm thick slices. Regions of interest (ROIs) were chosen and the signal intensity curves were calculated for quantitative image analysis. The mean time to peak for all dogs was 26min. The plateau phase lasted on average 21min. A gradual decrease in the signal intensity of the hepatic parenchyma was observed in all dogs. A DCE-MRI enhancement pattern of the hepatic parenchyma was evident in dogs following the administration of a GD-EOB-DTPA, establishing baseline data for an optimal time window between 26 and 41min after administration of the contrast agent.
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Affiliation(s)
- P Borusewicz
- Department of Internal Medicine and Clinic of Diseases of Horses, Dogs and Cats, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, Wroclaw, Poland.
| | - E Stańczyk
- Centre of Experimental Diagnostics and Innovative Biomedical Technology, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, Wroclaw, Poland; Clinic of Diagnostic Imaging, Vetsuisse Faculty, University of Zurich, Switzerland
| | - K Kubiak
- Department of Internal Medicine and Clinic of Diseases of Horses, Dogs and Cats, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, Wroclaw, Poland
| | - J Spużak
- Department of Internal Medicine and Clinic of Diseases of Horses, Dogs and Cats, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, Wroclaw, Poland
| | - K Glińska-Suchocka
- Department of Internal Medicine and Clinic of Diseases of Horses, Dogs and Cats, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, Wroclaw, Poland
| | - M Jankowski
- Department of Internal Medicine and Clinic of Diseases of Horses, Dogs and Cats, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, Wroclaw, Poland
| | - J Nicpoń
- Centre of Experimental Diagnostics and Innovative Biomedical Technology, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, Wroclaw, Poland
| | - P Podgórski
- Department of General and Interventional Radiology and Neuroradiology, Wroclaw Medical University, Poland
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Abstract
Hepatic applications of sonography include evaluation of the gallbladder and bile ducts, assessment of patients with suspected portal hypertension, and evaluation of focal and diffuse parenchymal liver disease. Ultrasound imaging (US) is generally a reliable and accurate method to diagnose a variety of hepatic abnormalities; however, in some cases there is a need to improve sonography's sensitivity and specificity, particularly for the detection and characterization of hepatic masses. Recent clinical experience has shown that the addition of a US contrast agent can enhance sonography's diagnostic capabilities including improving assessments of hepatic blood flow and the detection and characterization of hepatic neoplasms. One intravenously administered US contrast agent is now available in the United States, but its approved indication is limited to echocardiographic applications. Additional agents that have more diagnostic applications are likely to become available. Contrast-enhanced sonography may play a significant role in the diagnosis and management of patients with suspected hepatic abnormalities. This article describes two generic types of US contrast agents—vascular agents and tissue-specific agents—and includes a review of recent published reports on clinical applications of contrast-enhanced hepatic sonography.
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Affiliation(s)
- Daniel A. Merton
- Jefferson Ultrasound Research and Education Institute, Thomas Jefferson University, 132 South 10th Street, Philadelphia, PA 19107
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Wen YL, Kudo M, Minami Y, Chung H, Suetomi Y, Onda H, Kitano M, Kawasaki T, Maekawa K. Detection of tumor vascularity in hepatocellular carcinoma with contrast-enhanced Dynamic Flow imaging: Comparison with contrast-enhanced power Doppler imaging. J Med Ultrason (2001) 2016; 30:141-51. [PMID: 27278304 DOI: 10.1007/bf02481219] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2001] [Accepted: 06/18/2002] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To compare the effectiveness of contrast-enhanced Dynamic Flow imaging and contrast-enhanced power Doppler imaging using Levovist(®) as a microbubble contrast agent in evaluating intratumoral vascularity in hepatocellular carcinoma (HCC). MATERIALS AND METHODS Twenty-nine patients with 54 hepatocellular carcinoma nodules (before treatment, 31; after treatment, 23) were studied with both Dynamic Flow and power Doppler imaging with intravenous injection of Levovist(®). Tumor vascularity was categorized as 0, no blood flow signals within the tumor; 1, dotlike blood flow signals within the tumor; 2, moderate blood flow signals within the tumor; and 3, abundant blood flow signals within the tumor. Detectability of intratumoral vascularity of hepatocellular carcinoma in three groups based on tumor depth, blooming and noise artifacts on contrast-enhanced Dynamic Flow and contrast-enhanced power Doppler imaging were also compared with results obtained using dynamic CT as a the gold standard. The effectiveness of contrast-enhanced Dynamic Flow and contrast-enhanced power Doppler imaging in assessing therapeutic effect were compared at the same time. RESULTS The ability of contrast-enhanced Dynamic Flow Doppler imaging to detect tumor vascularity in the superficial and intermediate hepatocellular carcinoma groups was close to that of contrast-enhanced power Doppler imaging (p>0.05). However, contrast-enhanced Dynamic Flow imaging demonstrated tumor parenchymal stain in 28 hepatocellular carcinoma nodules (61%), which was not detected by contrast-enhanced power Doppler imaging. Further, significantly fewer artifacts appeared in contrast-enhanced Dynamic Flow imaging than in contrast-enhanced power Doppler imaging (p<0.001). In assessing therapeutic response, the sensitivity of contrast-enhanced Dynamic Flow imaging was similar to that of dynamic CT. In deep areas, however, those more than 6 cm below the surface of the body, contrast-enhanced Dynamic Flow imaging was less sensitivity than contrast-enhanced power Doppler imaging (p=0.005). CONCLUSION Contrast-enhanced Dynamic Flow imaging provides an effective approach to assessing intratumoral vascularity and therapeutic response in HCC lesions situated less than 6 cm from the surface of the body. It is superior to contrast-enhanced power Doppler imaging in its ability to detect tumor parenchymal stain and production of fewer artifacts.
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Affiliation(s)
- Yan Ling Wen
- Department of Gastroenterology and Hepatology, Kinki University School of Medicine, 377-2, 589-8511, Ohno-higashi, Japan.,Department of Ultrasound, Sun Yut-Sen University of Medical Science Memorial Hospital, 107 Yanjiangxi Road, 510120, Guangzhou, China
| | - Masatoshi Kudo
- Department of Gastroenterology and Hepatology, Kinki University School of Medicine, 377-2, 589-8511, Ohno-higashi, Japan
| | - Yasunori Minami
- Department of Gastroenterology and Hepatology, Kinki University School of Medicine, 377-2, 589-8511, Ohno-higashi, Japan
| | - Hobyung Chung
- Department of Gastroenterology and Hepatology, Kinki University School of Medicine, 377-2, 589-8511, Ohno-higashi, Japan
| | - Yoichiro Suetomi
- Department of Gastroenterology and Hepatology, Kinki University School of Medicine, 377-2, 589-8511, Ohno-higashi, Japan
| | - Hirokazu Onda
- Department of Gastroenterology and Hepatology, Kinki University School of Medicine, 377-2, 589-8511, Ohno-higashi, Japan
| | - Masayuki Kitano
- Department of Gastroenterology and Hepatology, Kinki University School of Medicine, 377-2, 589-8511, Ohno-higashi, Japan
| | - Toshihiko Kawasaki
- Department of Gastroenterology and Hepatology, Kinki University School of Medicine, 377-2, 589-8511, Ohno-higashi, Japan
| | - Kiyoshi Maekawa
- Abdominal Ultrasound Unit, Kinki University School of Medicine, 377-2, 589-8511, Ohno-higashi, Japan
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Alzaraa A, Gravante G, Chung WY, Al-Leswas D, Morgan B, Dennison A, Lloyd D. Contrast-enhanced ultrasound in the preoperative, intraoperative and postoperative assessment of liver lesions. Hepatol Res 2013; 43:809-19. [PMID: 23745715 DOI: 10.1111/hepr.12044] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2012] [Revised: 12/04/2012] [Accepted: 12/10/2012] [Indexed: 12/12/2022]
Abstract
The use of contrast agents (CA) with liver ultrasound (US) has gained recently an established role for the diagnosis of various hepatic diseases due to their safety, high versatility and low costs (contrast-enhanced ultrasound: CEUS). The purpose of this review is to provide a state-of-the-art summary of the available evidence for their use in the characterization of focal liver lesions. A published work search was conducted for all preclinical and clinical studies involving CA on hepatic US imaging. CEUS increases the sensitivity for lesion detection and the specificity to differentiate between benign and malignant diseases due to the enhanced visualization of the tumor microcirculation. Results achieved seem at least equivalent to those of spiral computed tomography or magnetic resonance imaging. The association of CA with intraoperative ultrasound has changed the surgical approach in 25% of patients and guarantees complete ablations by a single session in most of them. CEUS provides detailed information about tumor vasculature, improves the preoperative characterization and therefore the therapeutic strategy, and can evaluate the intraoperative completeness of the ablation.
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Affiliation(s)
- Ahmed Alzaraa
- Department of General Surgery, William Harvey Hospital, Ashford
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Warren-Smith CMR, Andrew S, Mantis P, Lamb CR. Lack of associations between ultrasonographic appearance of parenchymal lesions of the canine liver and histological diagnosis. J Small Anim Pract 2012; 53:168-73. [DOI: 10.1111/j.1748-5827.2011.01184.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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12
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Tao S, Qin Z, Hao W, Yongquan L, Lanhui Y, Lei Y. Usefulness of gray-scale contrast-enhanced ultrasonography (SonoVue®) in diagnosing hepatic alveolar echinococcosis. ULTRASOUND IN MEDICINE & BIOLOGY 2011; 37:1024-1028. [PMID: 21640477 DOI: 10.1016/j.ultrasmedbio.2011.04.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2010] [Revised: 04/12/2011] [Accepted: 04/26/2011] [Indexed: 05/30/2023]
Abstract
Hepatic alveolar echinococcosis (HAE) is a parasitic infection with an infiltrative growth pattern that has the appearance of a hepatic malignant tumor. Ultrasound (US) has been used for screening of HAE in epidemic areas. However, it has been very difficult to evaluate the clear boundary and microvessel perfusion of the lesions. The aim of this study was to demonstrate the characteristic imaging and clinical significance of HAE lesions by contrast-enhanced ultrasonography (CEUS). Seventeen patients with 19 HAE lesions were examined in sequence with US, color Doppler flow imaging (CDFI) and then CEUS before any treatment. All the data were compared before surgery. Examined by fundamental US, 47.4% of HAE lesions showed irregular hyperechoic substantive areas and 52.6% appeared as having a mixed echotype with irregular anechoic areas in the central portion of the lesions. The CDFI method indicated no blood flow signals inside any of the 19 lesions. By CEUS, all 19 lesions displayed circular rim enhancement in the peripheral segments and absent enhancement within the central areas of the lesions (a "black hole" effect). As a result, the lesions' margins were clear, irregular and distinct. In general, the sizes of all the HAE lesions observed by CEUS were larger than those obtained by fundamental US. Therefore, CEUS is a simple imaging method and can be a helpful tool for more accurate sizing of HAE lesions and their surrounding invasion range and the proper cut-off margin when radical hepatectomy is needed.
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Affiliation(s)
- Song Tao
- Department of Ultrasonography, First Affiliated Hospital, Xinjiang Medical University, Urumqi, PR China
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13
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Lim KJ, Kim KW, Jeong WK, Kim SY, Jang YJ, Yang S, Lee JJ. Colour Doppler sonography of hepatic haemangiomas with arterioportal shunts. Br J Radiol 2011; 85:142-6. [PMID: 21385916 DOI: 10.1259/bjr/96605786] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES To determine the frequency of intratumoural flow and peritumoural hepatofugal portal flow using colour Doppler sonography (CDS) on hepatic haemangiomas with arterioportal shunt (APS), and to investigate possible factors that may affect the capability of CDS to depict such findings. METHODS The study included 45 patients (35 men, 10 women; mean age, 56 years) with hepatic haemangiomas with APS on CT or MRI. Locating the tumour on greyscale sonography, the depth, size and echogenicity of the tumour were evaluated. CT or MR images were evaluated for fatty liver. CDS was performed to determine the presence of intratumoural flow and peritumoural hepatofugal portal flow. Differences in frequency of intratumoural flow and peritumoural hepatofugal portal flow according to the depth, size, echogenicity and fatty liver were evaluated by Student's t-test and Fisher's exact test. RESULTS On CDS, intratumoural flow and peritumoural hepatofugal portal flow were found in 66.7% and 60%, respectively. The tumour depth was the significant variable that affected the capability of CDS to depict such findings. The frequencies of intratumoural flow and peritumoural hepatofugal portal flow were as high as 88% and 80% for shallow (≤30 mm) lesions, and they were 40% and 35% for deep (>30 mm) lesions (p=0.0012; p=0.0051). CONCLUSION CDS can commonly depict intratumoural flow and peritumoural hepatofugal portal flow in patients with hepatic haemangiomas with APS. Therefore, CDS should be routinely performed when an incidental mass is encountered during the screening sonography, especially when the lesion is shallow.
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Affiliation(s)
- K J Lim
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul
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Matsumoto N, Ogawa M, Kawabata M, Tohne R, Hiroi Y, Furuta T, Yamamoto T, Gotoh I, Ishiwata H, Ono Y, Arakawa Y, Kinukawa N. Pseudolymphoma of the liver: Sonographic findings and review of the literature. JOURNAL OF CLINICAL ULTRASOUND : JCU 2007; 35:284-8. [PMID: 17436320 DOI: 10.1002/jcu.20244] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
We report a case of hepatic pseudolymphoma in a 67-year-old woman that was detected during an abdominal sonography screening. The lesion was further evaluated using CT, MRI, angiography, and contrast-enhanced sonography. The imaging features of this tumor are discussed herein. The diagnosis of pseudolymphoma was achieved via sonographically guided biopsy. The lesion regressed completely within 1 year.
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Affiliation(s)
- Naoki Matsumoto
- Third Department of Internal Medicine, Nihon University School of Medicine, 1-8-13, Kandasurugadai, Chiyoda-ku, Tokyo 101-8309, Japan
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Yen YH, Wang JH, Lu SN, Chen TY, Changchien CS, Chen CH, Hung CH, Lee CM. Contrast-enhanced ultrasonographic spoke-wheel sign in hepatic focal nodular hyperplasia. Eur J Radiol 2006; 60:439-44. [PMID: 16916591 DOI: 10.1016/j.ejrad.2006.06.007] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2006] [Revised: 06/18/2006] [Accepted: 06/27/2006] [Indexed: 11/24/2022]
Abstract
BACKGROUND To determine the utility of contrast-enhanced ultrasonography (CEUS) in assessing hepatic tumors with central feeding arteries found by color/power Doppler ultrasonograophy (CDUS/PDUS). METHODS We prospectively studied 37 hepatic tumors (34 patients), with a mean size of 2.9cm and each having a central feeding artery, by CDUS/PDUS. The CEUS was performed with a galactose-based microbubble contrast agent. The detection of a spoke-wheel sign was interpreted as evidence of focal nodular hyperplasia (FNH). All patients underwent tumor biopsies or surgical resection. RESULTS CEUS showed a central feeding artery with a spoke-wheel sign in 36 tumors, including 34 FNHs and 2 hepatocellular carcinomas. The remaining tumor was demonstrated to be FNH despite the absence of a spoke-wheel sign as detected by CEUS. The sensitivity of the spoke-wheel sign or central scar for FNH was 97.1% (34/35), 40% (14/35), 28.6% (10/35), 50% (8/16) and 0% (0/15) for CEUS, CDUS/PDUS, dynamic computed tomography (CT) or magnetic resonance imaging (MRI), hepatic angiography and liver scintigraphy, respectively. The two hepatocellular carcinomas showed scirrhous changes histologically. CONCLUSIONS CEUS is more sensitive than CDUS/PDUS, dynamic CT, MRI, hepatic angiography and liver scintigraphy in the detection of the spoke-wheel sign or central scar in FNH. Scirrhous hepatocellular carcinoma should be included in the differential diagnosis for liver tumors with spoke-wheel sign detected by CEUS.
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Affiliation(s)
- Yi-Hao Yen
- Division of Hepato-Gastroenterology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Kaohsiung 833, Taiwan
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Huang-Wei C, Bleuzen A, Olar M, Portalez D, Roumy J, Trillaud H, Tranquart F. Role of parametric imaging in contrast-enhanced sonography of hepatic focal nodular hyperplasia. JOURNAL OF CLINICAL ULTRASOUND : JCU 2006; 34:367-73. [PMID: 16944481 DOI: 10.1002/jcu.20256] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
PURPOSE To assess the value of parametric imaging during contrast-enhanced sonographic examination in the diagnosis of focal nodular hyperplasia (FNH) of the liver. MATERIALS AND METHODS Thirty-one patients with solitary FNH underwent contrast-enhanced sonographic examination between January 2003 and June 2004 using SonoVue and a Sequoia scanner equipped with Cadence Contrast Pulse Sequencing software. Contrast enhancement from a time sequence of perfusion frames was estimated using QontraXt software, which provides quantification of perfusion parameters. From the time-intensity curves, we obtained the following parameters: peak enhancement value, Tr (time recovery corresponding to time needed to reach 63% of the peak value), beta parameter corresponding to the exponential factor, and slope corresponding to the slope of the tangent to the arterial phase of enhancement. RESULTS Among the 4 parameters studied, the slope of the arterial phase of enhancement was the most sensitive to image the centrifugal arterial flow originating from the central portion of the lesion, whereas peak enhancement value and Tr were the most sensitive to image full enhancement of the lesion. A blinded review revealed equivalent sensitivity in the diagnosis of FNH between the interpretation of the original videoclips and that of the parametric images. CONCLUSIONS The results of this study show that parametric imaging can be used in place of original videoclips for clinical reporting of FNH; furthermore, it could help less-experienced sonologists diagnose FNH.
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Affiliation(s)
- Cecile Huang-Wei
- INSERM U619 Centre d'Innovation Technologique Ultrasons, Centre Hospitalier Universitaire Tours, Hopital Bretonneau, 37044 Tours, France
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Huang-Wei C, Bleuzen A, Bourlier P, Roumy J, Bouakaz A, Pourcelot L, Tranquart F. Differential diagnosis of focal nodular hyperplasia with quantitative parametric analysis in contrast-enhanced sonography. Invest Radiol 2006; 41:363-8. [PMID: 16481921 DOI: 10.1097/01.rli.0000195835.56589.55] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVES We investigated the potential of quantitative parametric analysis in the differential diagnosis of focal nodular hyperplasia (FNH) from other hypervascularized liver focal lesions. MATERIALS AND METHODS Eighty-five focal liver lesions (in 83 patients) were explored using contrast-enhanced ultrasound (SonoVue and Cadence Contrast Pulse Sequencing) consisting of typical FNH (n=52), hepatocellular carcinoma (n=11), hemangioma with high flow (n=8), hypervascular metastases (n=10), and hepatocellular adenoma (n=4). QontraXt software (AMID, Italy) was used here to estimate the following parameters: maximum peak value, Tr (time corresponding to time for obtaining 63% of the plateau), beta parameter corresponding to the exponential factor, and slope corresponding to the tangent value of the first phase of enhancement. These parameters were obtained from the time-intensity curves derived from the enhancement observed in 2 regions of interest corresponding, respectively, to the whole lesion and the central region only. RESULTS A significant statistical difference (P<0.05) was found in the values of Tr, beta, and slope between FNH and other hypervascularized lesions on both the whole lesion and central region. Among these parameters, slope appeared as the most valuable whatever the region of interest, ie, central or whole lesion (P<0.01). Central region was more accurate in the differentiation of FNH and concordant with visual characterization. CONCLUSION Quantitative parametric curve analysis of the different hypervascularized lesions confirms the depiction of the central artery in FNH and thus could help in differentiating this specific focal liver lesion from the others.
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Bartolotta TV, Midiri M, Galia M, Rollandi GA, Cademartiri F, Lagalla R, Cardinale AE. Characterization of benign hepatic tumors arising in fatty liver with SonoVue and pulse inversion US. ACTA ACUST UNITED AC 2006; 32:84-91. [PMID: 16583251 DOI: 10.1007/s00261-005-0074-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2005] [Accepted: 09/21/2005] [Indexed: 12/27/2022]
Abstract
BACKGROUND We describe the spectrum of contrast-enhancement patterns of benign hepatic tumors arising in fatty liver on contrast-enhanced ultrasound (US). METHODS Sixteen patients (12 women and four men) with 27 benign hepatic tumors (17 hemangiomas, eight focal nodular hyperplasias, and two hepatocellular adenomas) arising in fatty liver underwent baseline and pulse inversion US after administration of SonoVue. Two experienced radiologists evaluated baseline echogenicity and dynamic enhancement pattern of each lesion in comparison with adjacent liver parenchyma. RESULTS After administration of SonoVue, in the arterial phase 13 of 17 hemangiomas showed peripheral globular enhancement and one showed a rim of peripheral enhancement, followed by progressive centripetal fill-in, which was complete in 10 of 14 cases and incomplete in four. Three of 18 hemangiomas showed rapid and complete fill-in in the arterial phase. Eight of eight focal nodular hyperplasias became hyperechoic in comparison with adjacent liver parenchyma in the arterial phase and slightly hyperechoic or isoechoic in the portal venous and delayed phases. Both adenomas showed strong arterial contrast enhancement that became less intense in the portal venous and delayed phases. CONCLUSION Contrast-enhanced US after administration of SonoVue enables depiction of typical contrast-enhancement patterns in most benign hepatic tumors arising in fatty liver, thus providing useful clues for characterization.
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Affiliation(s)
- T V Bartolotta
- Department of Radiology, University of Palermo, Via Del Vespro 127, Palermo 90127, Italy.
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Celik H, Ozdemir H, Yücel C, Gultekin S, Oktar SO, Arac M. Characterization of hyperechoic focal liver lesions: quantitative evaluation with pulse inversion harmonic imaging in the late phase of levovist. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2005; 24:39-47. [PMID: 15615927 DOI: 10.7863/jum.2005.24.1.39] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
OBJECTIVE The aim of this study was to evaluate hyperechoic focal liver lesions with pulse inversion harmonic imaging in the late phase of SH U 508A (Levovist; Schering AG, Berlin, Germany) and to determine whether quantitative evaluation improves the characterization of the lesions. METHODS Twenty-six patients with hyperechoic liver lesions were enrolled in this study. Pulse inversion harmonic imaging was performed before and after administration of Levovist. Scan data were digitally stored, and each lesion was analyzed with a personal computer-based quantification package. All lesions were confirmed by histologic or triphasic spiral computed tomographic examinations. The intensity was measured in decibels in regions of interest drawn within the lesion and surrounding liver parenchyma. The lesion-liver ratios were than calculated. After contrast agent administration, a ratio equal to or greater than 1 was presumed benign, whereas a ratio of less than 1 was considered malignant. RESULTS Nine malignant (7 metastases, 1 hepatocellular carcinoma, and 1 cholangiocarcinoma) and 17 benign (14 hemangioma, 1 focal nodular hyperplasia, 1 focal fatty change, and 1 inflammatory pseudotumor) hyperechoic lesions were quantitatively evaluated. All malignant (n = 9) and 2 benign lesions (1 hemangioma and 1 inflammatory pseudotumor) had ratios of less than 1. In 15 of 17 benign lesions, the ratios were equal to or greater than 1. The intensity ratios calculated for benign and malignant lesions showed a statistically significant difference (P < .05). CONCLUSIONS Pulse inversion harmonic imaging with quantitative evaluation facilitates the differential diagnosis of hyperechoic focal liver lesions. A lesion-liver ratio equal to or greater than 1 predicts a benign nature, assuming that malignant lesions show a ratio of less than 1.
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Affiliation(s)
- Halil Celik
- Department of Radiology, Gazi University School of Medicine, 1 Kat, 06510 Besevler, Ankara, Turkey.
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Bartolotta TV, Midiri M, Quaia E, Bertolotto M, Galia M, Cademartiri F, Lagalla R. Liver haemangiomas undetermined at grey-scale ultrasound: contrast-enhancement patterns with SonoVue and pulse-inversion US. Eur Radiol 2004; 15:685-93. [PMID: 15611873 DOI: 10.1007/s00330-004-2569-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2004] [Revised: 10/13/2004] [Accepted: 10/19/2004] [Indexed: 11/24/2022]
Abstract
The objective of this study was to describe the spectrum of contrast-enhancement patterns of hepatic haemangiomas undetermined at grey-scale ultrasound (US) on SonoVue-enhanced pulse-inversion (PI) US. Twenty patients (11 women, nine men) with 35 haemangiomas (size range: 1-7 cm; mean: 3.1 cm) undetermined at baseline US underwent PI at low M.I. (0.05-0.08) after i.v. injection of SonoVue. All haemangiomas were confirmed by typical helical computed tomography (CT) and/or magnetic resonance imaging (MRI) findings. US examinations were videotaped and then reviewed by two experienced radiologists blinded to the final diagnosis. Readers evaluated by consensus the baseline echogenicity and the dynamic enhancement pattern of each lesion, in comparison with adjacent liver parenchyma. After administration of SonoVue, 31/35 (88%) haemangiomas showed peripheral hyperechoic nodules in the arterial phase, followed by progressive centripetal fill-in, which was complete in 25/35 cases and incomplete in 6/35 cases. Three out of 35 (9%) haemangiomas showed rapid and complete fill-in in the arterial phase, which persisted in the portal and delayed phases. Finally, 1/35 haemangiomas (3%) showed a rim of arterial contrast enhancement with progressive and complete centripetal fill-in in portal-venous and delayed phases. In conclusion, PI after the administration of SonoVue enabled the depiction of typical contrast-enhancement patterns in haemangiomas undetermined at baseline US.
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Suzuki Y, Fujimoto Y, Hosoki Y, Suzuki M, Inoue M, Sakurai S, Ohtake T, Ohhira M, Saito H, Kohgo Y. Usefulness of contrast-enhanced wide-band Doppler ultrasonograpy to diagnose alveolar echinococcosis of the liver and evaluate the effect of the treatment. Eur J Radiol 2004; 48:305-11. [PMID: 14652151 DOI: 10.1016/s0720-048x(03)00005-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Alveolar echinococcosis is a rare parasitic disease caused by Echinococcus multicularis and most commonly involves the liver. Early diagnosis and accurate evaluation of the effect of the treatment are essential to improve the prognosis of patients with alveolar echinococcosis of the liver (AEL). The aim of this study was to demonstrate the characteristic imaging of AEL by contrast-enhanced Dynamic Flow (CE-DF) employing a wide-band Doppler technique for the diagnosis and the accurate evaluation of the effect of the treatment. Four patients with five AEL lesions before treatment or during medication were examined by CE-DF. All of the five AEL lesions examined by CE-DF revealed a defect with an irregular and distinct margin like a worm-eaten defect appearance, which was never observed on other hepatic lesions, in liver perfusion image during post-vascular phase. In addition, CE-DF made it possible to measure the size of AEL lesions accurately because the margin was detected distinctly. These data suggest that CE-DF is clinically useful for the diagnosis of AEL and the evaluation of the effect of the treatment.
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Affiliation(s)
- Yasuaki Suzuki
- Third Department of Internal Medicine, Asahikawa Medical College, 2-1, Midorigaoka-Higashi, Asahikawa 078-8510, Japan
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Klein D, Jenett M, Gassel HJ, Sandstede J, Hahn D. Quantitative dynamic contrast-enhanced sonography of hepatic tumors. Eur Radiol 2004; 14:1082-91. [PMID: 15108017 DOI: 10.1007/s00330-004-2299-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2003] [Revised: 09/20/2003] [Accepted: 02/16/2004] [Indexed: 12/27/2022]
Abstract
Liver tumors are defined using quantitative dynamic contrast-enhanced ultrasound compared to histological diagnosis, respectively, long-term follow-ups. Forty-two focal liver lesions in 39 patients were examined by contrast harmonic imaging over a period of 2 min after bolus injection of 10-ml galactose-based contrast agent. Vascular enhancement was quantified by using a dedicated software that allowed us to place representative regions of interest (ROI) in the center of the lesion, in the complete lesion, in regular liver parenchyma and in representative liver vessels (artery, vein and portal vein). Peak enhancement was judged to be either in the arterial, portal venous or in the late phase of liver perfusion. The lesion was described as hypovascular, isovascular and hypervascular compared to liver parenchyma. Contrast uptake was described as centrifugal or centripetal and peripheral or homogenous, respectively. Characterization of the lesions was performed unenhanced and after contrast by four independent specialists unaware of histology. Diagnosis of malignancy was evaluated by using a receiver operating characteristic (ROC) analysis, also overall accuracy, average sensitivity, specificity and negative and positive predictive values were calculated. Interobserver agreement was defined by the Kappa statistics. Histologic examination revealed 29 malignant [hepatocellular carcinoma (HCC), n=11; cholangiocellular carcinoma (CCC), n=1; lymphoma, n=1; metastases, n=16)] and 7 benign [hemangioma, n=1; focal nodular hyperplasia (FNH), n=4, adenoma, n=2)] lesions. Six benign lesions (hemangioma n=1; FNH n=5) were proved by long-term follow-up. ROC analysis regarding the diagnosis of malignancy showed values from 0.43 to 0.62 (mean 0.57) before and from 0.70 to 0.80 (mean 0.75) after contrast agent, respectively. The average values for sensitivity, specificity, accuracy and negative and positive predictive values were 66, 26, 62, 45 and 73% unenhanced and 83, 49, 73, 65 and 82% after contrast, respectively. The interobserver agreement was 0.54 and 0.65 for unenhanced and enhanced examinations, respectively. Quantitative dynamic contrast-enhanced sonography improves the diagnosis of malignancy in liver lesions.
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Affiliation(s)
- Detlef Klein
- Institut für Röntgendiagnostik, Universität Würzburg, Josef-Schneider-Strasse 2, 97080 Würzburg, Germany.
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Bartolotta TV, Midiri M, Scialpi M, Sciarrino E, Galia M, Lagalla R. Focal nodular hyperplasia in normal and fatty liver: a qualitative and quantitative evaluation with contrast-enhanced ultrasound. Eur Radiol 2003; 14:583-91. [PMID: 14551728 DOI: 10.1007/s00330-003-2089-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2002] [Revised: 04/09/2003] [Accepted: 09/01/2003] [Indexed: 01/27/2023]
Abstract
The aim of this study was to describe gray-scale appearance of liver parenchyma and focal nodular hyperplasia (FNH) by pulse inversion (PI) ultrasound (US) at baseline and after contrast agent administration in patients with normal and fatty liver. Sixteen consecutive patients (12 women, 4 men) with 29 previously diagnosed FNHs (15 of 29 located in normal liver and 14 of 29 in fatty liver) underwent PI US before and after SH U 508A (Levovist) injection. Signal intensity values were measured within the FNHs and the adjacent liver parenchyma in selected images. Baseline echogenicity of fatty liver was higher (15.19 +/- 2.90 dB +/- SD) than normal liver (10.91 +/- 3.15 dB +/- SD; p<0.001). After Levovist administration, normal livers (7 of 16) showed a statistically significant increase of echogenicity (16.59 +/- 3.81 dB +/- SD; p<0.001) in comparison with fatty livers (9 of 16; 15.75 +/- 3.12 dB +/- SD). The FNHs located in normal liver showed baseline echogenicity higher (12.29 +/- 3.22 dB +/- SD) than that of FNHs arising in fatty liver (7.06 +/- 2.43 dB +/- SD; p<0.001). After Levovist administration, FNHs located in normal liver showed a statistically significant increase of echogenicity (25.30 +/- 4.62 dB +/- SD) in comparison with FNHs located in fatty liver (13.58 +/- 3.54 dB +/- SD; p<0.001); the latter always showed mean values of echogenicity lower than surrounding liver parenchyma. In our series decreased contrast-enhancement pattern of both fatty liver and FNHs located in fatty liver was the most prominent finding when Levovist is administered. Contrast washout was a distinctive feature of FNH arising from the fatty liver.
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Du WH, Yang WX, Wang X, Xiong XQ, Zhou Y, Li T. Assessment of hepatic VX2 tumors of rabbits with second harmonic imaging under high and low acoustic pressures. World J Gastroenterol 2003; 9:1679-82. [PMID: 12918100 PMCID: PMC4611523 DOI: 10.3748/wjg.v9.i8.1679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the possible clinical application value of second harmonic imaging under low acoustic pressure.
METHODS: Six New Zealand rabbits, averaging 2.7 ± 0.4 kg, were selected and operated upon to construct hepatic VX2 tumor carrier model. Hepatic VX2 tumors were imaged with B mode Ultrasonography (US), and second harmonic imaging (SHI) under high mechanic index (1.6) and low mechanic index (0.1). Echo agent was intravenously injected through ear vein at a dose of 0.01 mL/kg under B mode US and high MI SHI, and 0.05 mL/kg under low MI SHI, and then the venous channel was cleaned with sterilized saline. All the images were recorded by magnetic optics (MO), and they were analyzed further by at least two independent experienced sonographers.
RESULTS: Totally 6 hypoechoic and 3 hyperechoic lesions were found in the six carrier rabbits with a mean size about 2.1 ± 0.4 under B mode ultrasound, they were oval or round in shape with a clear outline or a hypoechoic halo at the margin of the lesions. Contrast agent could not change the echogenicity of the lesions under B mode US and SHI under high acoustic pressure. However, it could greatly increase the real time visualization sensitivity of the lesions with SHI under low acoustic pressure.
CONCLUSION: Our results suggest that contrast enhanced SHI with low MI and a bubble non-destructive method would be much more helpful than conventional SHI in our future clinical applications.
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Affiliation(s)
- Wen-Hua Du
- Department of Ultrasonography, Daping Hospital and Research Institute of Surgery, the Third Military Medical University, Chongqing 400042, China.
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Value of new contrast harmonic technique for detecting tumor vascularity in hepatocellular carcinoma: Preliminary results. J Med Ultrason (2001) 2003; 30:85-92. [DOI: 10.1007/bf02481368] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2001] [Accepted: 06/19/2002] [Indexed: 12/28/2022]
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Contrast-enhanced agent detection imaging: Early experience in hepatocellular carcinoma. J Med Ultrason (2001) 2003; 30:77-84. [DOI: 10.1007/bf02481367] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2001] [Accepted: 07/04/2002] [Indexed: 01/29/2023]
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Karabacakoglu A, Karakose S, Cil AS, Kaya A. Contrast media-enhanced power Doppler sonography for evaluation of hemangiomas and malignant tumors in the liver. J Gastroenterol Hepatol 2003; 18:92-8. [PMID: 12519230 DOI: 10.1046/j.1440-1746.2003.02900.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
AIM To evaluate the characterization of liver hemangiomas and malignant tumors using power Doppler sonography before and after intravenous injection of a sonocontrast agent. METHODS Forty-five patients with 57 liver tumors (22 hemangiomas, 24 metastases, 10 hepatocellular carcinomas (HCC) and one cholangiocellular carcinoma) were examined prospectively. The distribution (peripheral, central, mosaic) and extent (none, minimal, moderate and strong) of intratumoral flow pattern in each sonographic examination was subjectively classified. RESULTS The administration of the sonocontrast agent by bolus injection caused enhancement to gradually increase up to 2 min and lasted for 4-5 min. After injection of contrast agent, flow signals appeared or increased in 34 tumors. No signal enhancement was observed in 18 hemangiomas, four metastases and one HCC. The sensitivity and specificity of intratumoral vascularity for the detection of malignant liver tumors was 37.1 and 90.9% for unenhanced power Doppler sonography, and 85.7 and 81.8% for contrast-enhanced power Doppler sonography, respectively. CONCLUSION Contrast-enhanced power Doppler sonography is superior to unenhanced power Doppler sonography in the demonstration of malignant tumor vascularity, and is helpful in differentiating between hemangiomas and malignant liver tumors. A specific flow pattern within the tumor is not established in primary and metastatic malignant tumors with contrast-enhanced power Doppler sonography.
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Affiliation(s)
- Aydin Karabacakoglu
- Departments of Radiology and Internal Medicine, Selcuk University, Konya, Turkey
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von Herbay A, Vogt C, Häussinger D. Pulse inversion sonography in the early phase of the sonographic contrast agent Levovist: differentiation between benign and malignant focal liver lesions. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2002; 21:1191-1200. [PMID: 12418760 DOI: 10.7863/jum.2002.21.11.1191] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
OBJECTIVE To determine whether examination of focal liver lesions by pulse inversion sonography in the early perfusion phase of the contrast agent Levovist (SH U 508A; Schering AG, Berlin, Germany) enables distinction between benign and malignant lesions. METHODS Seventy-two patients were examined. The cause of the lesion was confirmed by liver biopsy, computed tomography, or both or by hepatic iminodiacetic acid-enhanced scintigraphy. Forty-two patients had malignant liver lesions, and 30 had benign liver lesions. After injection of 2 g of Levovist intravenously, analysis of Levovist arrival was performed by the interval delay imaging technique for 60 seconds. RESULTS The early arrival of Levovist less than 30 seconds after injection was used as an indicator for malignancy and had specificity of 67% and sensitivity of 60% (P < .05). The central starlike fill-in as a sign for focal nodular hyperplasia had specificity of 100% and sensitivity of 67% (P < .001). The rimlike pattern followed by centripetal fill-in as a sign for hemangioma had specificity of 100% and sensitivity of 18% (P < .01). In contrast, the early diffuse stippled arrival pattern was found in 60% of malignant lesions and also in 33% of cases of focal nodular hyperplasia and in 1 patient with an adenoma. CONCLUSIONS Analysis of Levovist arrival time cannot distinguish between a malignant or benign lesion in individual cases. However, the central starlike arrival pattern is characteristic of focal nodular hyperplasia.
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von Herbay A, Vogt C, Häussinger D. Late-phase pulse-inversion sonography using the contrast agent levovist: differentiation between benign and malignant focal lesions of the liver. AJR Am J Roentgenol 2002; 179:1273-9. [PMID: 12388513 DOI: 10.2214/ajr.179.5.1791273] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE We assessed the ability of contrast-enhanced sonography to reveal differences between benign and malignant focal hepatic lesions. SUBJECTS AND METHODS We examined 67 patients with focal hepatic lesions in a prospective study. The causes of the lesions were confirmed by histology, CT, MR imaging, or scintigraphy. The liver was screened for focal lesions using sonography. Thereafter, 2 g of Levovist (300 mg/mL; 1 mL/sec) was injected IV as a bolus. After a delay of at least 2.5 min without scanning, the liver was examined via three different scans using pulse-inversion sonography. RESULTS For the discrimination of malignant versus benign liver lesions, contrast-enhanced sonography improved sensitivity from 85% to 100% and specificity from 30% to 63%, as compared with baseline sonography. Receiver operating characteristic analysis revealed a significant improvement in this discrimination (A(z) = 0.692 +/- 0.065 at baseline sonography, A(z) = 0.947 +/- 0.037 with contrast-enhanced sonography, p < 0.001). Furthermore, a lower interobserver variability was found for contrast-enhanced sonography (weighted kappa = 0.947), as compared with baseline sonography (weighted kappa = 0.469). All lesions that had homogeneous enhancement in the late phase of Levovist enhancement were benign. In distinction, 90% of lesions without contrast enhancement in the late phase were malignant. All lesions were malignant that were isoechoic (invisible) on baseline sonography but visible because of lack of enhancement after injection. CONCLUSION Contrast-enhanced sonography has greater specificity and sensitivity than baseline sonography for the differentiation of benign and malignant liver lesions.
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Affiliation(s)
- Alexandra von Herbay
- Department of Medicine and Department of Hepatology, Gastroenterology and Infectious Diseases, University of Düsseldorf, Moorenstr. 5, D-40225 Düsseldorf, Germany
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Kitamura H, Kawasaki S, Nakajima K, Ota H. Correlation between microbubble contrast-enhanced color doppler sonography and immunostaining for Kupffer cells in assessing the histopathologic grade of hepatocellular carcinoma: preliminary results. JOURNAL OF CLINICAL ULTRASOUND : JCU 2002; 30:465-471. [PMID: 12242734 DOI: 10.1002/jcu.10099] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
PURPOSE The aim of this study was to determine the histopathologic grades of hepatocellular carcinomas (HCCs) on the basis of the presence of Kupffer cells, using color Doppler sonography with the liver-specific microbubble contrast agent Levovist. METHODS Color Doppler sonograms generated by stimulated acoustic emission were obtained 7 minutes after intravenous injection of 5 ml of Levovist (300 mg/dl) in patients with histopathologically confirmed HCCs. CT scans were also obtained and evaluated, and hematoxylin and eosin staining for morphologic examination and immunostaining (anti-CD68) for detecting Kupffer cells were performed for confirmation of the sonographic findings. RESULTS Eighteen tumors had a defect in the color Doppler signal (color void) that corresponded with the baseline gray-scale image of the tumor. On histopathologic examination, these 18 tumors were all found to be either poorly or moderately differentiated HCCs with either a marked reduction in the number of or the absence of Kupffer cells. The remaining 2 tumors showed color signals. Histopathologic examination of these 2 tumors disclosed well-differentiated components within the tumors, with Kupffer cells in the tumor tissue. CONCLUSIONS Color Doppler sonography using a liver-specific microbubble ultrasound contrast agent appears to reflect the histopathologic features of HCCs and may thus be useful for differentiating liver tumors and determining a treatment strategy.
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Affiliation(s)
- Hiroshi Kitamura
- First Department of Surgery, Shinsu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan
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Klibanov AL. Ultrasound Contrast Agents: Development of the Field and Current Status. Top Curr Chem (Cham) 2002. [DOI: 10.1007/3-540-46009-8_3] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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Basilico R, Blomley MJK, Harvey CJ, Filippone A, Heckemann RA, Eckersley RJ, Cosgrove DO. Which continuous US scanning mode is optimal for the detection of vascularity in liver lesions when enhanced with a second generation contrast agent? Eur J Radiol 2002; 41:184-91. [PMID: 11861092 DOI: 10.1016/s0720-048x(01)00459-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Microbubble echo-enhancers help in the assessment of focal liver masses by enhancing the signal from blood vessels. A variety of linear and nonlinear scanning modes are now available, but it is unclear which is optimal. A controlled comparison was performed during the infusion of such an agent (SonoVue: Bracco, Milan, Italy). METHODS AND MATERIALS Ten patients with known focal liver lesions were studied. The diagnoses, confirmed on dual phase helical computed tomography (CT) at the same attendance were metastasis (n = 7), haemangioma (n = 2) and focal nodular hyperplasia FNH (n = 1). A dose of 12 ml SonoVue concentrated at 5 mg/ml was infused intravenously at a rate of 1 ml/min. The enhancement level was monitored with a continuous wave (CW) Doppler probe over the right radial artery and the intensity of the signal was registered at 1 s intervals. When a plateau of enhancement was reached, a single lesion in each patient was imaged using five different continuous scanning modes, fundamental grey scale (FGS); fundamental colour Doppler (FCD); fundamental power Doppler (FPD); second harmonic grey scale (HGS); and pulse inversion mode (Pim) using an HDI5000 scanner and C5-2 probe (ATL, Bothell, WA). The order of scanning modes was varied between patients using a predefined randomisation protocol. The videos (super video home system (SVHS)) were analysed offsite by two blinded readers, both experienced in contrast ultrasound of the liver. The readers were asked to score each mode in terms of its ability to detect vessels within/around the lesion at optimal enhancement. This was done using a ranking system (1, worst; 5, best) for each patient. RESULTS Both observers scored FPD as the optimal imaging method, followed by Pim. (Scores summed across all patients, observer 1: FPD 48, Pim 42, FCD 37, HGS 21, FGS 10; observer 2: FPD 49, Pim 40, FCD 38, HGS 21, FGS 10). The differences from FPD were significant for FCD, HGS and FGS using a unpaired analysis of variance (ANOVA) comparison, with Bonferroni multiple corrections, (P<0.01, both observers). The differences between FPD and Pim were also significant both for observer 2 and for both observers combined (P<0.01), but did not reach significance for observer 1 (P = 0.19). CONCLUSIONS In this study, FPD performed best, and the non-linear modes, performed continuously (pulse inversion and second HGS), showed no clear advantage.
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Affiliation(s)
- Raffaella Basilico
- Department of Radiology, University of Chieti, Policlinico SS Annunziata, Via dei Vestini, 66013 Chieti, Italy.
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Chen RC, Chen WT, Tu HY, Cheng NY, Wang CK, Liao LY, Wang CS, Chen PH. Assessment of vascularity in hepatic tumors: comparison of power Doppler sonography and intraarterial CO(2)-enhanced sonography. AJR Am J Roentgenol 2002; 178:67-73. [PMID: 11756089 DOI: 10.2214/ajr.178.1.1780067] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
OBJECTIVE The purpose of the study was to compare power Doppler sonography with intraarterial CO(2)-enhanced sonography for revealing vascularity in treated and untreated hepatic tumors. SUBJECTS AND METHODS Fifty-five patients with 93 liver tumors were prospectively examined with power Doppler sonography and CO(2)-enhanced sonography. These tumors included 29 hepatocellular carcinomas in patients with no previous treatment, 26 treated hepatocellular carcinomas, and 38 hemangiomas. The vascular depiction of power Doppler sonography was compared with that obtained in the early phase of CO(2)-enhanced sonography. The results of angiography were also recorded for comparison. RESULTS In the hepatocellular carcinomas, power Doppler sonography was the same as CO(2)-enhanced sonography in 18 (62%) of 29 tumors, was inferior to CO(2)-enhanced sonography in nine (31%) of 29 tumors, and was superior to CO(2)-enhanced sonography in two (7%) of 29 tumors. In the treated hepatocellular carcinomas, power Doppler sonography was the same as CO(2)-enhanced sonography in 15 (58%) of 26 tumors and was inferior in 11 (42%) of 26 tumors. In hemangiomas, the same vascularity was found in both studies in 15 (39%) of 38 tumors, CO(2)-enhanced sonography was superior in 22 (58%) of 38 tumors, and power Doppler sonography was superior in one (3%) of 38 tumors. As a whole, 45% of the 93 tumors showed better vascular depiction on CO(2)-enhanced sonography. However, 19.4% of tumors were hypovascular using power Doppler sonography but hypervascular using CO(2)-enhanced sonography. CONCLUSION Power Doppler sonography is a useful technique for screening hepatic tumor vascularity. CO(2)-enhanced sonography is superior to power Doppler sonography in depicting tumor vascularity in treated hepatocellular carcinomas and in hemangiomas, especially small hemangiomas.
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MESH Headings
- Adult
- Aged
- Angiography, Digital Subtraction
- Carbon Dioxide
- Carcinoma, Hepatocellular/blood supply
- Carcinoma, Hepatocellular/diagnostic imaging
- Carcinoma, Hepatocellular/therapy
- Contrast Media
- Embolization, Therapeutic
- Ethanol/administration & dosage
- Female
- Hemangioma/blood supply
- Hemangioma/diagnostic imaging
- Hemangioma/therapy
- Humans
- Image Enhancement
- Infusions, Intra-Arterial
- Injections, Intralesional
- Liver Neoplasms/blood supply
- Liver Neoplasms/diagnostic imaging
- Liver Neoplasms/therapy
- Male
- Middle Aged
- Neovascularization, Pathologic/diagnostic imaging
- Sensitivity and Specificity
- Ultrasonography, Doppler, Color
- Ultrasonography, Doppler, Pulsed
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Affiliation(s)
- Ran-Chou Chen
- Department of Radiology, Taipei Municipal Jen-Ai Hospital, 10, Sec. 4, Jen-Ai Rd., 106, Taipei, Taiwan
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Abstract
Brain imaging techniques are assuming a greater range of roles in neuro-oncology. New techniques promise earlier recognition of the spread of tumors to the brain, which is useful in staging of disseminated disease, as well as better definition of small lesions associated with presentations of epilepsy. There is the promise that entirely noninvasive, specific diagnosis of brain tumors may become possible. Imaging methods are being used increasingly to direct and monitor therapy. Preoperative and intraoperative imaging are being used for guiding tumor surgery. An exciting potential goal for greater use of imaging is in the individualization of medical therapies either by analysis of in vitro responses or by visualization of drug responses on the tumor in situ. An important focus for technical development is in the robust integration of complementary information to allow optimization of the sensitivity and specificity of multimodal examinations.
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Affiliation(s)
- P M Matthews
- Centre for Functional Magnetic Resonance Imaging of the Brain, John Radcliffe Hospital, Headington, Oxford, United Kingdom.
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