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Liver ultrasound

Minglei Yang, Hui Ding, Lei Zhu, Guangzhi Wang
PURPOSE: Ultrasound fusion imaging is an emerging tool and benefits a variety of clinical applications, such as image-guided diagnosis and treatment of hepatocellular carcinoma and unresectable liver metastases. However, respiratory liver motion-induced misalignment of multimodal images (i.e., fusion error) compromises the effectiveness and practicability of this method. The purpose of this paper is to develop a subject-specific liver motion model and automatic registration-based method to correct the fusion error...
October 13, 2016: Computers in Biology and Medicine
N Platz Batista da Silva, M Schauer, M Hornung, S Lang, L P Beyer, I Wiesinger, C Stroszczynski, E M Jung
OBJECTIVE: To evaluate the efficacy of strain elastography (SE) using semi-quantitative measurement methods compared to constrast enhanced ultrasound during liver tumor surgery (Io-CEUS) for dignity assessment of focal liver lesions(FLL). MATERIAL AND METHODS: Prospective data acquisition and retrospective analysis of US data of 100 patients (116 lesions) who underwent liver tumor surgery between 10/2010 and 03/2016. Retrospective reading of SE color patterns was performed establishing groups depending on dominant color (>50% blue = stiff, inhomogenous, >50% yellow/red/green = soft tissue)...
October 20, 2016: Clinical Hemorheology and Microcirculation
Thomas Günther Lesser, Carsten Boltze, Harald Schubert, Frank Wolfram
Background: In recent years, high intensity focused ultrasound (HIFU) has gained increasing clinical interest as a non-invasive method for local therapy of liver malignancies. HIFU treatment of tumours and metastases in the liver dome is limited due to the adjacent ultrasound blocking lung. One-lung flooding (OLF) enables complete sonography of lung and adjoining organs including liver. HIFU liver ablation passing through the flooded lung could enable a direct intercostal beam path and thus improve dose deposition in liver...
2016: International Journal of Medical Sciences
Li Liu, Wanjun Chen, Xiaoye Lu, Keji Zhang, Changqing Zhu
BACKGROUND: Pyogenic liver abscesses have become common in emergency departments (EDs) in recent years in Shanghai, China due to a variety of risk factors contributory to the disease. OBJECTIVE: To review our experience in managing pyogenic liver abscesses to aid in the current management of this complex condition. METHODS: This retrospective study was conducted to collect and analyze information from adult patients diagnosed with liver hepatic abscesses who were admitted to Ren Ji Hospital during the period from January 1, 2010 to December 31, 2015...
October 17, 2016: Journal of Emergency Medicine
Jinshun Xu, Yang Cao, Chunyan Xu, Xueqing Cheng, Yufeng You, Yuanzhi Yao, Jianxin Liu, Zhigang Wang, Pan Li, Min Lu
OBJECTIVES: To determine whether combining microbubbles (MBs) with diagnostic ultrasound (US) at a high mechanical index (MI) could enhance the microwave (MW) ablation of tumours. MATERIALS AND METHODS: Five therapeutic MW adjuvant protocols were studied: MW, MW + US, MW + US + MB, MW + US + NS (saline), and MW + MB. In 30 normal rabbit livers, the synergistic effects were evaluated via temperature, necrosis volume and histology. In 90 VX2 rabbit hepatic tumours, residual cells in the peripheral ablated tumours were examined via immunohistochemical assay and tumour growth...
October 20, 2016: International Journal of Hyperthermia
Jennie Engstrand, Grzegorz Toporek, Piotr Harbut, Eduard Jonas, Henrik Nilsson, Jacob Freedman
OBJECTIVE: The purpose of the present study is to evaluate the accuracy and safety of antenna placement performed with the use of a CT-guided stereotactic navigation system for percutaneous ablation of liver tumors and to assess the safety of high-frequency jet ventilation for target motion control. MATERIALS AND METHODS: Twenty consecutive patients with malignant liver lesions for which surgical resection was contraindicated or that were not readily visible on ultrasound or not accessible by ultrasound guidance were included in the study...
October 20, 2016: AJR. American Journal of Roentgenology
Fabiana Policeni, Brittany Pakalniskis, Limin Yang
Metastatic tumors are rare in the breast. Well-differentiated neuroendocrine tumors (WDNETs) are slow-growing neoplasms that arise from neuroendocrine cells, particularly in the gastrointestinal tract and bronchial tree. Metastatic WDNET to the breast is a rare entity. We present a case report of ileal WDNET metastatic to the breast which was initially identified as a small mass in the patient's left breast on screening mammography. Targeted ultrasound identified a suspicious mass, and ultrasound-guided percutaneous core biopsy was performed...
2016: Journal of Clinical Imaging Science
Otto Mauro Dos Santos-Rosa, Henrique Simonsen Lunardelli, Marcelo Augusto Fontenelle Ribeiro-Junior
Background: The pyogenic liver abscess has an incidence of 1.1/1,000 habitants. Mortality can reach 100%. The use of less invasive procedures diminish morbidity and hospital stay. Aim: Identify risk factors in patients who underwent percutaneous drainage guided by ultrasound as treatment. Method: Were analyzed 10 patients submitted to the method. Epidemiological characteristics, laboratory markers and imaging exams (ultrasound and CT) were evaluated...
July 2016: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
Frank W DiPaola, Kurt R Schumacher, Caren S Goldberg, Joshua Friedland-Little, Aishwarya Parameswaran, Jonathan R Dillman
OBJECTIVES: Assess liver stiffness using ultrasound point shear wave elastography (US P-SWE) in children before and after the Fontan operation. METHODS: Eighteen children undergoing the Fontan operation were prospectively enrolled. Eight US P-SWE measurements were obtained from the right hepatic lobe before surgery, and at multiple postoperative time points. Temporally related inferior vena cava pressure (IVC) data was collected from medical records, when available...
October 17, 2016: European Radiology
Yasunori Minami, Tomohiro Minami, Hirokazu Chishina, Masashi Kono, Tadaaki Arizumi, Masahiro Takita, Norihisa Yada, Satoru Hagiwara, Hiroshi Ida, Kazuomi Ueshima, Naoshi Nishida, Masatoshi Kudo
OBJECTIVE: Radiofrequency ablation (RFA) induces gas bubbles in ablation zones, and the ablative margin cannot be evaluated accurately on ultrasound (US) during and immediately after RFA. This study assessed the usefulness of US-US fusion imaging to visualize the ablative margin of RFA for liver metastasis. METHODS: RFA guided by US-US fusion imaging was performed on 12 targeted tumors in 10 patients. Secondary hepatic malignancies included patients with colorectal cancer (n = 4), breast cancer (n = 2), lung cancer (n = 1), gastrointestinal stromal tumor (n = 1), pancreatic neuroendocrine tumor (n = 1), and adrenocortical carcinoma (n = 1)...
2016: Digestive Diseases
Masahiro Takita, Mina Iwanishi, Tomohiro Minami, Masashi Kono, Hirokazo Chishina, Tadaaki Arizumi, Norihisa Yada, Satoru Hagiwara, Yasunori Minami, Hiroshi Ida, Kazuomi Ueshima, Nishida Naoshi, Masatoshi Kudo
OBJECTIVE: The objective of treatment for polycystic liver disease is to reduce the liver volume and reduce or resolve compression symptoms such as abdominal fullness and abdominal pain due to hepatomegaly. Liver cysts are treated internally by puncture and aspiration of the cyst contents or hepatic artery embolization and surgically by cyst fenestration or hepatectomy, but no clear consensus has been reached concerning their selection. We introduced monoethanolamine oleate (EO) sclerotherapy therapy for liver cysts in 1999 and reported its effectiveness...
2016: Digestive Diseases
Norihisa Yada, Toshiharu Sakurai, Tomohiro Minami, Tadaaki Arizumi, Masahiro Takita, Satoru Hagiwara, Hiroshi Ida, Kazuomi Ueshima, Naoshi Nishida, Masatoshi Kudo
OBJECTIVE: We have reported about real-time tissue elastography (RTE), which displays relative strain by measuring the relative distortion of the tissue, and found this information to be useful for diagnosing liver fibrosis. However, its use in predicting hepatocellular carcinoma has not been reported as yet. Here, we investigated RTE to predict liver carcinogenesis in patients with chronic hepatitis C virus (HCV) infection. METHODS: We enrolled 160 patients with chronic HCV, who were followed up for 39...
2016: Digestive Diseases
Cristina Oana Mărginean, Maria Oana Mărginean, Iunius Simu, Adrienne Horvath, Lorena Elena Meliţ
BACKGROUND: Adenomas of the colon are usually benign tumors which carry a tendency for malignancy. These tumors can be villous, tubular, tubulovillous, or sessile serrated. Those with adenomatous structure can develop malignant characteristics in 1.5% to 9.4% of cases. METHODS: We present a case report of a 16-year-old female adolescent with an adenoma of the descending colon. History revealed prolonged diarrheic syndrome for the past 6 months, repeated headache, and a weight loss of ∼5 kg in the past month...
October 2016: Medicine (Baltimore)
Matthew P Lungren, Will S Lindquester, F Glen Seidel, Nishita Kothry, Eric J Monroe, Giri Shivaram, Anne E Gill, Matthew C Hawkins
PURPOSE: To describe and assess the technical success and safety of ultrasound guided liver biopsy with gelatin sponge pledget tract embolization technique in infants less than 10 kg across three tertiary pediatric hospitals. MATERIALS AND METHODS: There were 67 pediatric patients weighing less than 10 kg (36 males; 31 females; average age 202 days; average weight 6 kg, range 1.5 kg to 9.9 kg) referred for liver biopsy performed with ultrasound guidance and gelatin sponge pledget tract embolization during a two year period...
September 30, 2016: Journal of Pediatric Gastroenterology and Nutrition
Nitin Chaubal, Mukund Joshi, Anupam Bam, Rajas Chaubal
No abstract text is available yet for this article.
October 2016: Seminars in Roentgenology
Amir Reza Radmard, Mohammad Sadegh Rahmanian, Alireza Abrishami, Ali Yoonessi, Soheil Kooraki, Mehrdad Dadgostar, Amir Pejman Hashemi Taheri, Marjan Gerami Seresht, Hossein Poustchi, Elham Jafari, Reza Malekzadeh, Shahin Merat
BACKGROUND: To investigate the association between non-alcoholic fatty liver disease (NAFLD) and quantitative measures of central adiposity in the general population using a semi-automated method on magnetic resonance imaging (MRI) data. METHODS: Subjects were recruited from Golestan Cohort Study. Two groups of 120 individuals with and without fatty liver were randomly selected based on findings of ultrasound. Non-invasive diagnosis of NAFLD was made by combination of ultrasound and MRI...
October 2016: Archives of Iranian Medicine
Zeinab A Elkabbany, Nancy S Elbarbary, Eman A Ismail, Nesrine A Mohamed, Dina Ragab, Shereen Abdel Alem, Yasmine M Ezzat, Sarah S Maurice, Noha U Hashem
AIM: To identify the prevalence and effect of hepatopathies of different etiologies among pediatric patients with type 1 diabetes mellitus (T1DM) using transient elastography (TE) and its relation to glycemic control. METHODS: One hundred T1DM patients were studied focusing on liver functions, fasting lipid profile, hemoglobin A1c (HbA1c), hepatitis C virus (HCV), serum immunoglobulins, autoimmune antibodies; anti-nuclear antibody (ANA), anti-smooth muscle antibody (ASMA), and anti-liver kidney microsomal antibody (anti-LKM)...
September 26, 2016: Journal of Diabetes and its Complications
You Li, Dongwoon Hyun, Lotfi Abou-Elkacem, Juergen Willmann, Jeremy Dahl
Power Doppler (PD) imaging is a widely used technique for flow detection. Despite the wide use of Doppler ultrasound, limitations exist in the ability of Doppler ultrasound to assess slow flow in small-diameter vasculature, such as the maternal spiral arteries and fetal villous arteries of the placenta and focal liver lesions. The sensitivity of PD in small vessel detection is limited by the low signal produced by slow flow and the noise associated with small vessels. The noise sources include electronic noise, stationary or slowly moving tissue clutter, reverberation clutter, and off-axis scattering from tissue, among others...
October 10, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Frank Preiswerk, Matthew Toews, Cheng-Chieh Cheng, Jr-Yuan George Chiou, Chang-Sheng Mei, Lena F Schaefer, W Scott Hoge, Benjamin M Schwartz, Lawrence P Panych, Bruno Madore
PURPOSE: To combine MRI, ultrasound, and computer science methodologies toward generating MRI contrast at the high frame rates of ultrasound, inside and even outside the MRI bore. METHODS: A small transducer, held onto the abdomen with an adhesive bandage, collected ultrasound signals during MRI. Based on these ultrasound signals and their correlations with MRI, a machine-learning algorithm created synthetic MR images at frame rates up to 100 per second. In one particular implementation, volunteers were taken out of the MRI bore with the ultrasound sensor still in place, and MR images were generated on the basis of ultrasound signal and learned correlations alone in a "scannerless" manner...
October 13, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
Gonzalo Garcia-Casasola, Francisco Javier García Sánchez, Davide Luordo, Deborah Forrester Zapata, María Carnevali Frías, Victoria Villena Garrido, Javier Villanueva Martínez, Alberto Forero de la Sotilla, José Manuel Casas Rojo, Juan Torres Macho
OBJECTIVES: To analyze the ability of medical students to be integrated in the teaching of basic abdominal ultrasound using a peer-mentoring design. METHODS: Thirty medical students previously trained in basic abdominal ultrasound (mentors) had to teach all fourth-year students (n = 136) from a single academic year the same training they had received. There were 3 stages to the ultrasound teaching: theoretical (online course); basic training (3 practical sessions in which students were guaranteed to have had a minimum of 15 hours of practical experience with ultrasound and performed at least 20 basic abdominal ultrasound studies); and evaluation (objective structured clinical examination in which students had to obtain the basic abdominal views and to identify 17 structures)...
October 13, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
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