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Contrast enhanced ultrasound testes

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https://www.readbyqxmd.com/read/29131073/an-introduction-to-contrast-enhanced-ultrasound-for-nephrologists
#1
Emily H Chang
Contrast-enhanced ultrasound (CEUS) is an emerging technology with no known nephrotoxicity. CEUS has been utilized in cardiac and abdominal imaging for decades in Asia and Europe and has recently received greater attention in the United States with its approval for characterization of indeterminate liver lesions. Emerging data suggest that CEUS has potential as a diagnostic imaging tool among individuals who have contraindications to CT and MRI. Few nephrologists are aware of CEUS and even fewer are aware of its potential applications among individuals with kidney disease...
November 9, 2017: Nephron
https://www.readbyqxmd.com/read/29119649/prospective-multimodal-imaging-assessment-of-locally-advanced-cervical-cancer-patients-administered-by-chemoradiation-followed-by-radical-surgery-the-price-prospective-imaging-of-cervical-cancer-and-neoadjuvant-treatment-study-2-the-role-of-ultrasound-after
#2
Antonia Carla Testa, Francesca Moro, Tina Pasciuto, Maria Cristina Moruzzi, Alessia Di Legge, Gilda Fuoco, Rosa Autorino, Angela Collarino, Benedetta Gui, Gian Franco Zannoni, Antonietta Gambacorta, Maura Miccò, Vittoria Rufini, Giovanni Scambia, Gabriella Ferrandina
OBJECTIVE: To determine the diagnostic performance of two-dimensional ultrasound parameters, three-dimensional power Doppler and intravenous contrast enhanced indices in detecting residual disease in locally advanced cervical cancer patients triaged to neoadjuvant treatment followed by radical surgery. METHODS: Between October 2010 and June 2014, 108 women with histologically documented cervical cancer and FIGO stage IB2-IVA were screened and 88 of them were included in the final analysis...
November 8, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29090653/tuberculous-pyelonephritis-in-children-three-case-reports
#3
Nimisha Arora, Abhijeet Saha, Manpreet Kaur
Tuberculous pyelonephritis is rare in children; three case reports are presented. Case 1 was an 11-year-old girl with a previous history of pulmonary tuberculosis who presented with flank pain and fever for 10 days. An ultrasound suggested focal pyelonephritis, and a contrast-enhanced computed tomography (CECT) scan demonstrated acute focal pyelonephritis and a perinephric collection. Mycobacterium tuberculosis was cultured in the urine. She responded well to anti-tuberculous treatment (ATT). Case 2 was a 13-year-old boy who presented with fever, haematuria, burning micturition, proteinuria (3+) and cervical lymphadenopathy...
November 1, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/29052791/potential-diagnostic-performance-of-contrast-enhanced-ultrasound-and-tumor-markers-in-differentiating-combined-hepatocellular-cholangiocarcinoma-from-hepatocellular-carcinoma-and-cholangiocarcinoma
#4
Xiao-Wen Huang, Yang Huang, Li-da Chen, Zhu Wang, Zheng Yang, Jin-Ya Liu, Xiao-Yan Xie, Ming-De Lu, Shun-Li Shen, Wei Wang
PURPOSE: To evaluate the diagnostic performance of the combination of tumor markers [alpha-fetoprotein (AFP) and carbohydrate antigen 19-9 (CA19-9)] and imaging features in differentiating combined hepatocellular-cholangiocarcinoma (CHC) from hepatocellular carcinoma (HCC) and cholangiocarcinoma (CC). METHODS: Forty consecutive patients with pathologically proven CHC were retrospectively evaluated with contrast-enhanced ultrasound (CEUS). Additionally, 40 HCC and 40 CC patients who were randomly selected from the same period served as a control group...
October 20, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28970709/comparison-of-contrast-enhanced-ultrasound-with-contrast-enhanced-computed-tomography-for-the-diagnosis-of-hepatocellular-carcinoma
#5
Sandeep Moudgil, Naveen Kalra, Nidhi Prabhakar, Radha Krishan Dhiman, Arunanshu Behera, Yogesh Kumar Chawla, Niranjan Khandelwal
BACKGROUND/AIMS: The most common primary malignant tumor of liver is hepatocellular carcinoma (HCC). The highest risk of developing HCC is seen in patients of cirrhosis. Ultrasound is used for surveillance in these patients. This study evaluates the role of contrast enhanced ultrasound (CEUS) in the diagnosis of HCC and compares CEUS to contrast enhanced computed tomography (CECT). MATERIALS AND METHODS: This prospective study included 22 patients with cirrhosis and suspected to have HCC on the basis of gray scale ultrasound or elevated Alpha-fetoprotein...
September 2017: Journal of Clinical and Experimental Hepatology
https://www.readbyqxmd.com/read/28951947/cholangiocarcinoma-and-its-mimickers-in-primary-sclerosing-cholangitis
#6
REVIEW
Jonghun John Lee, Sebastian T Schindera, Hyun-Jung Jang, Scott Fung, Tae Kyoung Kim
Cholangiocarcinoma (CCA) is the most common malignancy in primary sclerosing cholangitis (PSC). Approximately half of CCA are diagnosed within two years of initial diagnosis and often have a poor prognosis because of advanced tumor stage at the time of diagnosis. Thus, rigorous initial imaging evaluation for detecting CCA is important. CCA in PSC usually manifests as intrahepatic mass-forming or perihilar periductal-infiltrating type. Imaging diagnosis is often challenging due to pre-existing biliary strictures and heterogeneous liver...
September 26, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28940870/assessment-of-cerebral-perfusion-with-contrast-enhanced-ultrasound-during-constriction-of-the-neck-mimicking-malposition-of-the-bd-odon-device%C3%A2-a-study-in-newborn-piglets
#7
C de Lange, O D Saugstad, R Solberg
OBJECTIVE: The BD Odon Device™ is a new instrument for operative vaginal birth with potential for preventing maternal, fetal and newborn morbidity/mortality during a complicated second stage of labour. The device is a plastic sleeve with an air chamber inflated around the baby's head which is gently pulled through the birth canal. The aim was to monitor changes in cerebral circulation during constriction of the neck to evaluate a risk of potential malposition of the device. DESIGN: Randomised prospective study...
September 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28932826/interobserver-variation-of-the-bolus-and-burst-method-for-pancreatic-perfusion-with-dynamic-contrast-enhanced-ultrasound
#8
Marcus Stangeland, Trond Engjom, Martin Mezl, Radovan Jirik, Odd Helge Gilja, Georg Dimcevski, Kim Nylund
PURPOSE: Dynamic contrast-enhanced ultrasound (DCE-US) can be used for calculating organ perfusion. By combining bolus injection with burst replenishment, the actual mean transit time (MTT) can be estimated. Blood volume (BV) can be obtained by scaling the data to a vessel on the imaging plane. The study aim was to test interobserver agreement for repeated recordings using the same ultrasound scanner and agreement between results on two different scanner systems. MATERIALS AND METHODS: Ten patients under evaluation for exocrine pancreatic failure were included...
June 2017: Ultrasound International Open
https://www.readbyqxmd.com/read/28926263/copper-sulfide-perfluorocarbon-nanodroplets-as-clinically-relevant-photoacoustic-ultrasound-imaging-agents
#9
Daniela Y Santiesteban, Diego S Dumani, Daniel Profili, Stanislav Y Emelianov
We have developed laser-activated perfluorocarbon nanodroplets containing copper sulfide nanoparticles (CuS NPs) for contrast-enhanced ultrasound and photoacoustic imaging. As potential clinical contrast agents, CuS NPs have favorable properties including biocompatibility, biodegradability, and enhance contrast in photoacoustic images at clinically relevant depths. However, CuS NPs are not efficient optical absorbers when compared to plasmonic nanoparticles and therefore, contrast enhancement with CuS NPs is limited, requiring high concentrations to generate images with sufficient signal-to-noise ratio...
October 11, 2017: Nano Letters
https://www.readbyqxmd.com/read/28912893/the-role-of-nitric-oxide-during-sonoreperfusion-of-microvascular-obstruction
#10
Francois T H Yu, Xucai Chen, Adam C Straub, John J Pacella
Rationale: Microembolization during PCI for acute myocardial infarction can cause microvascular obstruction (MVO). MVO severely limits the success of reperfusion therapies, is associated with additional myonecrosis, and is linked to worse prognosis, including death. We have shown, both in in vitro and in vivo models, that ultrasound (US) and microbubble (MB) therapy (termed "sonoreperfusion" or "SRP") is a theranostic approach that relieves MVO and restores perfusion, but the underlying mechanisms remain to be established...
2017: Theranostics
https://www.readbyqxmd.com/read/28886723/pancreatic-injury-in-children-a-case-report-and-review-of-the-literature
#11
Fayza Haider, Mohammed Amin Al Awadhi, Eizat Abrar, Mooza Al Dossari, Hasan Isa, Husain Nasser, Hakima Al Hashimi, Sharif Al Arayedh
BACKGROUND: Trauma is the main cause of morbidity and mortality in the pediatric population. Blunt trauma to the abdomen accounts for the majority of abdominal injuries in children. Pancreatic injury, although uncommon (2 to 9%), is the fourth most common solid organ injury. Unlike other solid organ injuries, pancreatic trauma may be subtle and difficult to diagnose. Computed tomography currently is the imaging modality of choice. As the incidence of pancreatic injury in children sustaining blunt abdominal trauma is low, management remains a challenge...
September 9, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28885204/quantitative-evaluation-of-real-time-maximum-liver-capacity-limax-and-time-intensity-curve-tic-analysis-in-ceus-based-microperfusion
#12
M Haimerl, K Brünn, S Poelsterl, L P Beyer, I Wiesinger, C Stroszczynski, E-M Jung, P Wiggermann
PURPOSE: To compare the diagnostic performance of real-time maximum liver capacity (LiMAx) with dynamic contrast-enhanced ultrasound (CEUS)-based liver microcirculation. MATERIALS AND METHODS: 23 patients underwent liver function capacity (LiMAx) test and consecutive or previous CEUS examinations. A bolus injection of 1.4 ml sulfur hexafluoride microbubbles was administered for CEUS measurements (1-6 MHz) and quantitative perfusion analysis (TIC) was performed with an integrated perfusion software using stored cine-loops...
September 4, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28871466/salting-out-enhanced-ionic-liquid-microextraction-with-a-dual-role-solvent-for-simultaneous-determination-of-trace-pollutants-with-a-wide-polarity-range-in-aqueous-samples
#13
Man Gao, Jingang Qu, Kai Chen, Lide Jin, Randy Alan Dahlgren, Huili Wang, Chengxia Tan, Xuedong Wang
In real aquatic environments, many occupational pollutants with a wide range of polarities coexist at nanogram to milligram per liter levels. Most reported microextraction methods focus on extracting compounds with similar properties (e.g., polarity or specific functional groups). Herein, we developed a salting-out-enhanced ionic liquid microextraction based on a dual-role solvent (SILM-DS) for simultaneous detection of tetracycline, doxycycline, bisphenol A, triclosan, and methyltriclosan, with log K ow ranging from -1...
September 4, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28852319/combination-of-acoustic-radiation-force-impulse-imaging-serological-indexes-and-contrast-enhanced-ultrasound-for-diagnosis-of-liver-lesions
#14
Xiao-Lan Sun, Hui Yao, Qiong Men, Ke-Zhu Hou, Zhen Chen, Chang-Qing Xu, Li-Wei Liang
AIM: To assess the value of combined acoustic radiation force impulse (ARFI) imaging, serological indexes and contrast-enhanced ultrasound (CEUS) in distinguishing between benign and malignant liver lesions. METHODS: Patients with liver lesions treated at our hospital were included in this study. The lesions were divided into either a malignant tumor group or a benign tumor group according to pathological or radiological findings. ARFI quantitative detection, serological testing and CEUS quantitative detection were performed and compared...
August 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28846949/splenic-hamartoma-associated-with-thrombocytopenia-a-case-report
#15
Toshiaki Komo, Jun Hihara, Mikihiro Kanou, Toshihiko Kohashi, Ichiro Ohmori, Masanori Yoshimitsu, Takuhiro Ikeda, Akira Nakashima, Masashi Miguchi, Ichiko Yamakita, Hidenori Mukaida, Naoki Hirabayashi, Mayumi Kaneko
INTRODUCTION: Hamartomas are rare, benign tumors of the spleen. Few cases of splenic hamartomas associated with thrombocytopenia have been reported. PRESENTATION OF CASE: An asymptomatic 64-year-old man with myelodysplastic syndrome was found to have a splenic tumor. Laboratory tests were significant for thrombocytopenia, with a platelet count of 7.8×10(4)/μL. Ultrasonography showed splenomegaly (10.8×6.6cm), and a hypoechoic splenic mass (8.0×7.0cm). Color doppler ultrasound revealed blood flow within the mass, and the mass density was homogeneous on abdominal computed tomography (CT)...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28845489/is-contrast-enhanced-ultrasonography-a-useful-tool-in-a-beginner-s-hand-how-much-can-a-computer-assisted-diagnosis-prototype-help-in-characterizing-the-malignancy-of-focal-liver-lesions
#16
Tudor Voicu Moga, Alina Popescu, Ioan Sporea, Mirela Danila, Ciprian David, Vasile Gui, Nicoleta Iacob, Gratian Miclaus, Roxana Sirli
AIM: Contrast enhanced ultrasound (CEUS) improved the characterization of focal liver lesions (FLLs), but is an operatordependent method. The goal of this paper was to test a computer assisted diagnosis (CAD) prototype and to see its benefit in assisting a beginner in the evaluation of FLLs. MATERIAL AND METHOD: Our cohort included 97 good quality CEUS videos[34% hepatocellular carcinomas (HCC), 12.3% hypervascular metastases (HiperM), 11.3% hypovascular metastases (HipoM), 24...
August 23, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28829305/extended-lifetime-in-vivo-pulse-stimulated-ultrasound-imaging
#17
James Wang, Christopher V Barback, Casey N Ta, Joi Weeks, Natalie Gude, Robert F Mattrey, Sarah L Blair, William C Trogler, Hotaik Lee, Andrew C Kummel
An on-demand long-lived ultrasound contrast agent that can be activated with single pulse stimulated imaging (SPSI) has been developed using hard shell liquid perfluoropentane filled silica 500 nm nanoparticles for tumor ultrasound imaging. SPSI was tested on LnCAP prostate tumor models in mice; tumor localization was observed after intravenous (IV) injection of the contrast agent. Consistent with enhanced permeability and retention, the silica nanoparticles displayed an extended imaging lifetime of 3.3 ± 1 days (mean ± standard deviation)...
August 17, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28808900/varying-ultrasound-power-level-to-distinguish-surgical-instruments-and-tissue
#18
Hongliang Ren, Banani Anuraj, Pierre E Dupont
We investigate a new framework of surgical instrument detection based on power-varying ultrasound images with simple and efficient pixel-wise intensity processing. Without using complicated feature extraction methods, we identified the instrument with an estimated optimal power level and by comparing pixel values of varying transducer power level images. The proposed framework exploits the physics of ultrasound imaging system by varying the transducer power level to effectively distinguish metallic surgical instruments from tissue...
August 15, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28806319/transient-segmental-enhancement-of-pyogenic-liver-abscess-a-comparison-between-contrast-enhanced-ultrasound-and-computed-tomography
#19
Kun Sun, Wei Zhu, Yan Luo, Yongzhong Li, Xiang Zhou
OBJECTIVE: This study aimed to investigate the correlation between the transient segmental enhancement (TSE) of liver abscesses on contrast-enhanced ultrasound (CEUS) imaging and contrast-enhanced computed tomography (CT) scans. METHODS: In total, 42 abscesses in 38 patients were evaluated with real-time CEUS and contrast-enhanced CT imaging. The CT imaging and CEUS examinations were performed within one to 2 days of each other in all cases. The initial reports of the observations of TSE on CEUS scans were correlated later with the findings of TSE on contrast-enhanced CT images...
August 12, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28799124/comparison-between-free-breathing-radial-vibe-on-3-t-mri-and-endoscopic-ultrasound-for-preoperative-t-staging-of-resectable-oesophageal-cancer-with-histopathological-correlation
#20
Jinrong Qu, Hongkai Zhang, Zhaoqi Wang, Fengguang Zhang, Hui Liu, Zhidan Ding, Yin Li, Jie Ma, Zhongxian Zhang, Shouning Zhang, Yafeng Dong, Lina Jiang, Wei Zhang, Robert Grimm, Berthold Kiefer, Ihab R Kamel, Jianjun Qin, Hailiang Li
OBJECTIVES: To compare the T staging of resectable oesophageal cancer (OC) using radial VIBE (r-VIBE) and endoscopic ultrasound (EUS) with pathological confirmation of the T stage. METHODS: Forty-three patients with endoscopically proven OC and indeterminate T1/T2/T3/T4a stage by computed tomography (CT) and EUS were imaged on a 3-T magnetic resonance imaging (MRI) scanner. T stage was scored on MRI and EUS by two independent radiologists and one endoscopist, respectively, and compared with postoperative pathological findings...
August 10, 2017: European Radiology
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