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Contrast AND enhanced AND Venous AND ultrasound

Lian-Feng Liu, Zhan-Ling Ding, Jian-Hong Zhong, Hong-Xue Li, Jun-Jie Liu, Hang Li, Le-Qun Li
Objective: To evaluate contrast-enhanced ultrasound (CEUS) for monitoring early intrahepatic recurrence of primary hepatocellular carcinoma (HCC) after curative treatment. Methods: We prospectively analyzed 97 patients (124 nodules) with primary HCC who underwent hepatic resection or radiofrequency ablation and subsequently experienced intrahepatic recurrence. Patients were assessed with conventional ultrasound and CEUS. They were also assessed with contrast-enhanced computed tomography (CECT) and/or magnetic resonance imaging (MRI)...
2018: BioMed Research International
Hongling Li, Jin Li
OBJECTIVE: To evaluate the value of real time contrast-enhanced ultrasound in differential diagnosis of malignant liver tumors. METHODS: 60 patients pathologically diagnosed with liver cancer from May 2016 to May 2017 were selected as the objects. All patients received ultrasonic diagnosis followed by the observation on dynamic contrast enhancement of the image and the analysis on perfusion characteristics and difference in contrast-enhanced ultrasound results in patients with different types of liver cancer...
December 3, 2018: Canadian Journal of Physiology and Pharmacology
Antonino Barletta, Marina Pace, Lorenzo D'Antiga, Maurizio Cheli, Giovanna Mangili, Sandro Sironi
Omphalopagus twins are joined ventrally in the umbilical region. In omphalopagus twins, liver's fusion is very frequent, being present in about 80% of cases. Two conjoined twins born in our Hospital were evaluated using plain x-rays, ultrasound (US), gastrointestinal xrays, Tc-99 hepatobiliary scintigraphy (SC) and contrast enhanced computed tomography (CT). There was no bony connection on conventional xrays, neither bowel communication on GI x-rays study. US demonstrated the fusion of left hepatic lobes and a not-quantifiable vascular shunt...
November 22, 2018: Clinical Imaging
Fanqing Meng, Jun Shi, Bangming Gong, Qi Zhang, Lehang Guo, Dan Wang, Huixiong Xu
Contrast-enhanced ultrasound (CEUS) is a valuable imaging modality for diagnosis of liver cancers. However, the complexity of CEUS-based diagnosis limits its wide application, and the B-mode ultrasound (BUS) is still the most popular diagnosis modality in clinical practice. In order to promote BUS-based computer-aided diagnosis (CAD) for liver cancers, we propose a learning using privileged information (LUPI) based CAD with BUS as the diagnosis modality and CEUS as PI. Particularly, the multimodal restricted Boltzmann machine (MRBM) works as a LUPI paradigm...
July 2018: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Federico Fontana, Andrea Coppola, Christian Ossola, Alessandro Beneventi, Edoardo Macchi, Carlo Fugazzola
The objective of this study was to describe a case of marked hypoplasia of the right renal vein with drainage into ipsilateral gonadal vein. A 66-year-old man, known for hypertension and previous smoking, underwent an abdominal ultrasound exam, which detected a juxtarenal aortic aneurysm. Computed tomography scan confirmed the presence of the aortic aneurysm; furthermore it showed an abnormal right kidney venous drainage consistent in a dilated and tortuous vein, which originated at the hilar region, heading caudally and joining the right spermatic vein at level of aortic carrefour...
February 2019: Radiology Case Reports
Natascha Platz Batista da Silva, Ernst Michael Jung, Friedrich Jung, Hans J Schlitt, Matthias Hornung
AIM: Aim of this study was to firstly describe reproducible, objective perfusion parameters of contrast-enhanced ultrasound (CEUS) kinetics of parathyroid gland adenoma (PA) using perfusion analysis software (VueBox®, Bracco, Italy). Thereby the efficiency of quantitative CEUS for characterization of PA should be evaluated comparing US to postoperative histopathological findings after PA resection. MATERIAL AND METHODS: 42 patients with symptoms/lab work suggestive of pHPT presented a parathyroid gland lesion in B-mode US, which was consequently analyzed by dynamic CEUS...
October 15, 2018: Clinical Hemorheology and Microcirculation
Natascha Platz Batista da Silva, Matthias Hornung, Lukas P Beyer, Christina Hackl, Stefan Brunner, Hans Jürgen Schlitt, Philipp Wiggermann, Ernst Michael Jung
PURPOSE:  Assessment of intraoperative quantitative shear wave elastography (SWE) and contrast-enhanced ultrasound (CEUS) for the characterization of focal liver lesions (FLLs) during liver surgery using postoperative histopathological results as the gold standard. MATERIALS AND METHODS:  US data of 79 consecutive patients with 98 FLLs who underwent liver surgery between 08/2015 - 06/2017 were prospectively acquired and retrospectively analyzed. Multifrequency linear/T-shaped probes (6 - 9 MHz) were used to store cine loops of at least 5 s and images of B-mode, SWE and CEUS...
October 19, 2018: Ultraschall in der Medizin
Hrishikesh Sukhadeo Parashi, Kunal Hemant Rawekar, Manoj Murlidhar Joshi, Hemant Shivram Namdev, Manish Ramdhan Jadhao, Krishnarao Narayan Bhosle
Venous aneurysms are uncommon clinical entities. Venous aneurysms involving the head and neck region are distinctly uncommon, and a saccular aneurysm of the external jugular vein with thrombus is extremely rare. We present a case of saccular aneurysm of the external jugular vein with partial thrombosis in a 30-year-old woman, which was diagnosed on duplex ultrasound and contrast-enhanced computed tomography, and treated by surgical excision.
October 2018: Asian Cardiovascular & Thoracic Annals
Matteo Garcovich, Mariella Faccia, Franca Meloni, Emanuela Bertolini, Ilario de Sio, Giosuele Calabria, Giampiero Francica, Gianpaolo Vidili, Laura Riccardi, Maria Assunta Zocco, Maria Elena Ainora, Francesca Romana Ponziani, Anna Maria De Gaetano, Antonio Gasbarrini, Gian Ludovico Rapaccini, Maurizio Pompili
PURPOSE: Hepatocellular adenoma (HCA) is a rare benign monoclonal neoplasm, recently categorized on genetic and histopathological basis into four subtypes with different biological behaviors. Since contrast-enhanced ultrasonography (CEUS) is nowadays a well-established technique for liver nodule characterization, the aim of our study was to assess CEUS features of HCAs to identify criteria that correlate with different HCA subtypes as compared to histopathologic examination and other imaging modalities...
October 10, 2018: Journal of Ultrasound
Steven P Daniels, Darryl B Sneag, Jennifer L Berkowitz, David Trost, Yoshimi Endo
OBJECTIVE: To describe the clinical presentation of arterial pseudoaneurysms following total knee arthroplasty (TKA) and their diagnostic imaging features on ultrasound and magnetic resonance angiography (MRA) in 7 patients. MATERIALS AND METHODS: A search of our radiology report database from 2007 to 2017 yielded 7 patients with a pseudoaneurysm diagnosed by imaging after TKA. Clinical notes and imaging were reviewed. RESULTS: All 7 patients were male and ranged in age from 53 to 68 (mean 61) years...
October 10, 2018: Skeletal Radiology
Emilio Quaia, Antonio Giulio Gennari
Purpose: To identify the most appropriate time delay after microbubble contrast agent injection to maximize liver metastasis conspicuity on contrast-enhanced ultrasound (CEUS). Methods: Twenty-five consecutive patients (12 male and 13 female; age: 50 ± 13 years) with a known primary tumor and evidence of liver metastases on unenhanced ultrasound (US) underwent CEUS. CEUS consisted of continuous liver parenchyma scanning during arterial (15-35 s after microbubble injection), portal venous (40-120 s), and late phase (from 120 s up to microbubble disappearance)...
July 2018: Journal of Medical Ultrasound
Ömer Salt, Mustafa Burak Sayhan, Eren Duyar
Acute onset abdominal pain constitutes a significant proportion of emergency department visits, but only a small fraction of these cases are attributable to vascular pathologies (Bauersfeld, 1947 [1]). In this case, report, we present an incidental diagnosis of Spontaneous Isolated Superior Mesenteric Artery Dissection (SISMAD). A 69-year-old man was admitted to the emergency department complaining of fever, loss of appetite, vague epigastric pain, dysuria, and a productive cough for several days. A lower extremity venous Doppler ultrasound was performed, and a deep venous thrombosis (DVT) was identified in the left main femoral vein and in the proximal segment of the superficial vein...
September 20, 2018: American Journal of Emergency Medicine
Jeffrey A Chuy, Ishan Garg, Rondell P Graham, Wendaline M VanBuren, Sudhakar K Venkatesh
PURPOSE: We aimed to evaluate the imaging features of bile duct adenoma (BDA) on ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI). METHODS: Retrospective search in our institution database was performed for histologically confirmed BDA. Their imaging studies before histologic confirmation were reviewed. The search identified seven adults (mean age, 52.9 years) with histologically proven single BDA each. US (n=3), CT (n=5), and MRI (n=3) were performed before histologic confirmation...
September 2018: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
Vasileios Rafailidis, Paul S Sidhu
Introduction: Ultrasound has traditionally been regarded as the first-line imaging modality for screening, diagnostic evaluation and monitoring treatment and disease progression of vascular pathology, including both the arterial and the venous branch of the vascular system. Albeit of its well-tolerated nature, wide availability and low cost, ultrasound above all, has the advantage of providing the clinician with clinically significant information related to both intraluminal irregularities and extravascular disease...
August 2018: Ultrasound: Journal of the British Medical Ultrasound Society
Conor J MacDonald, Stephen Gandy, Eilidh C M Avison, Shona Matthew, Rose Ross, John G Houston
OBJECTIVE: To compare non-contrast enhanced MRI with ultrasound (US) for measurement of arm blood vessel geometries and flow velocities in volunteers and patients with end-stage renal disease. MATERIALS AND METHODS: Subjects were scanned using US (reference standard), and MRI 2D time-of-flight (ToF), 2D phase contrast (PC), and 3D multi-echo data image combination (MEDIC). Patients were also scanned after arteriovenous fistula (AVF) surgery. RESULTS: For mean vessel diameters (radial and brachial arteries; cephalic vein) MEDIC measurements were similar to US (p > 0...
December 2018: Magma
Michael T Corwin, Shan S Hansra, Thomas W Loehfelm, Ramit Lamba, Ghaneh Fananapazir
OBJECTIVE: The purpose of this study was to determine the prevalence of solid tumors in incidental homogeneous renal masses with attenuation greater than 20 HU on portal venous phase CT images. MATERIALS AND METHODS: In this retrospective study, the records of patients with incidental indeterminate (> 20 HU) homogeneous renal masses on portal venous phase CT scans from September 11, 2007, through March 18, 2017, were identified. Adult patients were included if they had undergone follow-up ultrasound, contrast-enhanced MRI, multiphase contrast-enhanced CT, or pathologic analysis alone to confirm the solid or cystic nature of the lesion...
September 2018: AJR. American Journal of Roentgenology
Francesco Prada, Massimiliano Del Bene, Giovanni Mauri, Massimo Lamperti, Davide Vailati, Carla Richetta, Marco Saini, Davide Santuari, M Yashar S Kalani, Francesco DiMeco
The relevance of the cerebral venous system is often underestimated during neurosurgical procedures. Damage to this draining system can have catastrophic implications for the patient. Surgical decision-making and planning must consider each component of the venous compartment, from the medullary draining vein to the dural sinuses and extracranial veins. Intraoperative ultrasound (ioUS) permits the real-time study of venous compartments using different modalities, thus allowing complete characterization of their anatomical and functional features...
July 2018: Neurosurgical Focus
Han-Yu Jiang, Jie Chen, Chun-Chao Xia, Li-Kun Cao, Ting Duan, Bin Song
Hepatocellular carcinoma (HCC) is the most common primary liver cancer and a major public health problem worldwide. Hepatocarcinogenesis is a complex multistep process at molecular, cellular, and histologic levels with key alterations that can be revealed by noninvasive imaging modalities. Therefore, imaging techniques play pivotal roles in the detection, characterization, staging, surveillance, and prognosis evaluation of HCC. Currently, ultrasound is the first-line imaging modality for screening and surveillance purposes...
June 14, 2018: World Journal of Gastroenterology: WJG
Barbara Schellhaas, Lukas Pfeifer, Christian Kielisch, Ruediger Stephan Goertz, Markus F Neurath, Deike Strobel
OBJECTIVES:  This pilot study aimed at assessing interobserver agreement with two contrast-enhanced ultrasound (CEUS) algorithms for the diagnosis of hepatocellular carcinoma (HCC) in high-risk patients. METHODS:  Focal liver lesions in 55 high-risk patients were assessed independently by three blinded observers with two standardized CEUS algorithms: ESCULAP (Erlanger Synopsis of Contrast-Enhanced Ultrasound for Liver Lesion Assessment in Patients at risk) and ACR-CEUS-LI-RADSv...
June 7, 2018: Ultraschall in der Medizin
Sunyoung Lee, Kyoung Won Kim, So Yeong Jeong, Kyung Jin Lee, So Yeon Kim, Gi Won Song, Sung Gyu Lee
OBJECTIVE: To investigate the value of Doppler ultrasound (US) in recipients of living donor liver transplantation (LDLT) using modified right-lobe grafts (mRLGs) with obstruction of the middle hepatic vein tributaries (MHVTs)-interposition vessel graft (IVG). METHODS: This study included 240 consecutive LDLT recipients in whom 564 MHVTs (>5 mm) were reconstructed using IVG. Regular follow-up Doppler US was performed to assess the patency of the MHVTs-IVG and, if there was an obstruction, to evaluate for the establishment of collateral drainage...
September 2018: British Journal of Radiology
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