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Contrast AND enhanced AND Venous AND ultrasound

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https://www.readbyqxmd.com/read/29995501/prevalence-of-solid-tumors-in-incidentally-detected-homogeneous-renal-masses-measuring-20-hu-on-portal-venous-phase-ct
#1
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...
July 11, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29961376/dynamic-assessment-of-venous-anatomy-and-function-in-neurosurgery-with-real-time-intraoperative-multimodal-ultrasound-technical-note
#2
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
https://www.readbyqxmd.com/read/29904242/noninvasive-imaging-of-hepatocellular-carcinoma-from-diagnosis-to-prognosis
#3
REVIEW
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
https://www.readbyqxmd.com/read/29879746/interobserver-agreement-for-contrast-enhanced-ultrasound-ceus-based-standardized-algorithms-for-the-diagnosis-of-hepatocellular-carcinoma-in-high-risk-patients
#4
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
https://www.readbyqxmd.com/read/29869918/doppler-ultrasound-follow-up-of-middle-hepatic-vein-tributaries-interposition-vessel-graft-in-recipients-of-living-donor-liver-transplantation-using-modified-right-lobe-grafts
#5
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...
June 14, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29869173/impact-of-dual-energy-ct-post-processing-to-differentiate-venous-thrombosis-from-iodine-flux-artefacts
#6
Jakob Weiss, Christoph Schabel, Ahmed E Othman, Georg Bier, Konstantin Nikolaou, Fabian Bamberg, Malte N Bongers
OBJECTIVES: To investigate the accuracy of dual-energy (DE) CT-based iodine maps (IM) and noise-optimised monoenergetic extrapolations (MEI+) at 40 keV for the detection and differentiation of venous thrombosis (VT) from iodine flux artefacts (IFA) in comparison to portal-venous phase CT (CTPV ). METHODS: Ninety-nine patients were enrolled in this study. In all patients, VT or IFA was suspected on contrast-enhanced CT and confirmed by follow-up CT or colour-coded ultrasound...
June 4, 2018: European Radiology
https://www.readbyqxmd.com/read/29858125/value-of-contrast-enhanced-ultrasound-in-detecting-competent-and-incompetent-lower-extremity-perforating-veins
#7
Jie Zhang, Ming Xiao, Nan Kang, Changshuai Yan, Jiechang Zhu, Xiangchen Dai
The purpose of this study was to investigate the value of contrast-enhanced ultrasound (CEUS) in the identification of competent and incompetent lower-extremity perforating veins. Patients with chronic venous insufficiency who met the inclusion criteria were enrolled. All patients underwent pre-operative CEUS and color Doppler ultrasound (CDU) and accepted subfascial endoscopic perforator surgery. We compared the numbers of perforator veins identified by CEUS and CDU with the endoscopy result, which was considered the gold standard...
August 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29758936/evaluation-of-integrated-color-coded-perfusion-analysis-for-contrast-enhanced-ultrasound-ceus-after-percutaneous-interventions-for-malignant-liver-lesions-first-results
#8
I Wiesinger, L P Beyer, N Zausig, N Verloh, P Wiggermann, C Stroszczynski, E M Jung
BACKGROUND:  With the rising number of percutaneous ablation therapies in malignant liver lesions there is a need of reliable diagnostics after the intervention to differentiate between reactive changes and tumor. PURPOSE: To assess the success of percutaneous ablation therapies for malignant liver lesions using CEUS with perfusion analysis. MATERIAL AND METHODS: Retrospective analysis of perfusion analysis for 67 patients with 94 malignant liver lesions, treated with ablation therapies...
2018: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29756164/methods-for-the-determination-of-skeletal-muscle-blood-flow-development-strengths-and-limitations
#9
REVIEW
Lasse Gliemann, Stefan P Mortensen, Ylva Hellsten
Since the first measurements of limb blood flow at rest and during nerve stimulation were conducted in the late 1800s, a number of methods have been developed for the determination of limb and skeletal muscle blood flow in humans. The methods, which have been applied in the study of aspects such as blood flow regulation, oxygen uptake and metabolism, differ in terms of strengths and degree of limitations but most have advantages for specific settings. The purpose of this review is to describe the origin and the basic principles of the methods, important aspects and requirements of the procedures...
June 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29735798/thrombosis-of-the-portal-venous-system-in-cirrhotic-vs-non-cirrhotic-patients
#10
Vania Cruz-Ramón, Paulina Chinchilla-López, Oscar Ramírez-Pérez, Nancy E Aguilar-Olivos, Luis F Alva-López, Ericka Fajardo-Ordoñez, Guadalupe Ponciano-Rodríguez, Patrick G Northup, Nicolas Intagliata, Stephen H Caldwell, Xingshun Qi, Nahum Méndez-Sánchez
INTRODUCTION AND AIM: Thrombosis is a vascular disorder of the liver often associated with significant morbidity and mortality. Cirrhosis is a predisposing factor for portal venous system thrombosis. The aim of this study is to determine differences between cirrhotics and non-cirrhotics that develop thrombosis in portal venous system and to evaluate if cirrhosis severity is related to the development of portal venous system thrombosis. MATERIAL AND METHODS: We studied patients diagnosed with portal venous system thrombosis using contrast-enhanced computed tomography scan and doppler ultrasound at Medica Sur Hospital from 2012 to 2017...
May 2018: Annals of Hepatology
https://www.readbyqxmd.com/read/29704013/-ceus-diagnostic-of-malignant-liver-lesions
#11
REVIEW
G Negrão de Figueiredo, K Müller-Peltzer, J Rübenthaler, D A Clevert
CLINICAL/METHODICAL ISSUE: Cross-sectional modalities or conventional ultrasound are not always able to sufficiently identify and characterize malignant liver lesions. STANDARD RADIOLOGICAL METHODS: The evaluation of malignant liver lesions in conventional ultrasound relies on echostructure, shape and borders, but often warrants additional contrast-enhanced computed tomography (CT) or magnetic resonance imaging (MRI) studies. METHODICAL INNOVATIONS: Contrast-enhanced ultrasound (CEUS) is a relatively safe imaging technique used for the detection and characterization of malignant liver lesions...
June 2018: Der Radiologe
https://www.readbyqxmd.com/read/29704011/-ceus-diagnosis-of-benign-liver-lesions
#12
REVIEW
K Müller-Peltzer, J Rübenthaler, G Negrao de Figueiredo, D A Clevert
CLINICAL/METHODICAL ISSUE: Focal liver lesions are commonly seen during routine ultrasound examinations. STANDARD RADIOLOGICAL METHODS: With native ultrasound there are lesions that cannot be sufficiently characterized. In these cases additional imaging might be necessary. METHODICAL INNOVATIONS: With contrast-enhanced ultrasound (CEUS), focal liver lesions can be characterized with high diagnostic accuracy. After the ultrasound contrast agent has been injected into a peripheral vein, the examiner saves video loops of the arterial, portal venous and late contrast phases...
June 2018: Der Radiologe
https://www.readbyqxmd.com/read/29658347/contrast-enhanced-ultrasound-ceus-imaging-of-solid-benign-focal-liver-lesions
#13
Christoph F Dietrich, Claudio Tana, Cosmin Caraiani, Yi Dong
Ultrasound is well accepted worldwide for imaging of the liver. Absences of radiation exposure, low cost and large diffusion are some of the advantages that make this technique the first to be used in the assessment of focal liver lesions (FLL). Areas covered: Contrast enhanced ultrasound (CEUS) has been introduced more than twenty years ago, and its detection rate is comparable to that of contrast enhanced magnetic resonance imaging (CEMRI) and contrast enhanced computed tomography (CECT). In this narrative review, we discuss the main CEUS features of benign liver lesions and controversies in published results including the gold standard chosen and the quality and knowledge of the preferred techniques...
May 2018: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29628300/long-term-outcomes-of-selective-renal-artery-embolization-for-renal-arteriovenous-fistulae-with-dilated-venous-sac
#14
Yasushi Kimura, Keigo Osuga, Yusuke Ono, Tetsuro Nakazawa, Hiroki Higashihara, Noriyuki Tomiyama
PURPOSE: To retrospectively evaluate the role of selective renal artery embolization for renal arteriovenous fistulae (AVFs) with dilated venous sac. MATERIALS AND METHODS: Between 2002 and 2015, 14 patients (7 men and 7 women; mean age, 60 years) with a single renal AVF with dilated venous sac underwent selective renal artery embolization. Three patients presented with gross hematuria, 4 presented with occult blood in urine, and 1 presented with chronic heart failure...
July 2018: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/29560099/atypical-appearance-of-hepatic-hemangiomas-with-contrast-enhanced-ultrasound
#15
Min Huang, Qiyu Zhao, Fen Chen, Qihan You, Tian'an Jiang
To describe the atypical enhancement pattern of hepatic hemangiomas on contrast-enhanced sonography. 22 patients with hepatic hemangiomas that were atypical on contrast-enhanced ultrasound were included in the study, all of them were confirmd by biopsy or surgery pathology. Atypical appearance of hepatic hemangiomas on contrast-enhanced ultrasound were divided into seven subtypes: (i) peripheral nodular enhancement in the arterial phase with centripedal filling, hypoechoic change in the delayed phase; (ii) peripheral circular enhancement; (iii) peripheral nodular enhancement; (iv) none enhancement; (v) septal enhancement; (vi) a central enhancing focus in the arterial phase, followed by a centrifugal enhancement in the portal venous phase, hypoechoic change in the delayed phase; (vii) slowly spoke wheel enhancement...
February 27, 2018: Oncotarget
https://www.readbyqxmd.com/read/29545436/internal-jugular-vein-aneurysm-in-an-adult-diagnosis-on-non-invasive-imaging
#16
Elise Chua, Valerie Udom, Dean Y Huang
We report the case of a 48-year-old man with a right fusiform internal jugular venous aneurysm, presenting as a unilateral painless neck swelling on coughing or laughing. This is a rare condition, more commonly seen in the paediatric population and can be diagnosed using non-invasive modalities such as Doppler ultrasound and contrast-enhanced CT. This anomaly is frequently misdiagnosed or overlooked, and our case highlights the importance of considering venous aneurysm as a differential to prevent invasive imaging and inappropriate management...
March 15, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29499671/posttraumatic-venous-gas-in-the-liver-a-case-report-and-review-of-the-current-literature
#17
René Fahrner, Falk Rauchfuss, Hubert Scheuerlein, Utz Settmacher
BACKGROUND: There are numerous causes of hepatic gas formation that range from serious pathologies to incidental findings, including mesenteric infarction, liver abscess, inflammatory bowel disease or minimally invasive hepatic interventions. CASE PRESENTATION: We report a case of a 50-year-old man who was admitted to the emergency room after a car accident. The clinical examination and further diagnostics revealed a craniocerebral injury with a fracture of the skull, concomitant soft tissue lesions and subarachnoidal bleeding...
March 2, 2018: BMC Surgery
https://www.readbyqxmd.com/read/29468068/a-case-report-of-thrombosed-varicosities-of-pubic-collateral-veins-ideal-treatment-strategy-and-contribution-of-era-imaging-technologies-in-diagnosis
#18
Daniel Paramythiotis, Patroklos Goulas, Petros Bangeas, Argiris Giannopoulos, Kostantinos Kapoulas, Vasileios Rafailidis, Georgios Papadopoulos, Kiriakos Ktenidis, Anna Kalogera-Fountzila, Antonis Michalopoulos
Collateral circulation is an alternative path occurring in case of venous or artery obstruction. This path may usually develop after primary recanalization. In our case, a 62-year-old woman presented to our Emergency Department complaining about a suprapubic swelling with a cyanotic discoloration of the overlying skin for the past 10 days for which she had been previously prescribed antibiotics. Investigation with ultrasound and contrast-enhanced computed tomography was performed. An imaging study revealed thrombosed pubic varicose collateral veins due to deep vein obstruction and occlusion of the left external iliac vein...
2018: SAGE Open Medical Case Reports
https://www.readbyqxmd.com/read/29396158/an-institution-wide-algorithm-for-direct-stick-embolization-of-peripheral-venous-malformations
#19
Naiem Nassiri, Lauren A Huntress, Mitchell Simon, Susan Murphy
OBJECTIVE: No standardized therapeutic algorithm or embolic agent of choice has yet been identified for management of congenital peripheral venous malformations (VMs). Treatment options and reported outcomes therefore vary widely. Herein, we present an institution-wide algorithm for management of symptomatic congenital peripheral VMs using a single embolotherapeutic modality. METHODS: During 36 months, patients with symptomatic congenital peripheral VMs underwent contrast-enhanced magnetic resonance imaging...
May 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29390301/contrast-enhanced-ultrasound-diagnosis-of-hepatic-metastasis-of-concurrent-medullary-papillary-thyroid-carcinoma-a-case-report
#20
Jie Zhou, Yan Luo, Bu Yun Ma, Wen Wu Ling, Xiang Lan Zhu
RATIONALE: Co-occurrence of medullary thyroid carcinoma (MTC) and papillary thyroid carcinoma (PTC) in the same thyroid gland with liver metastasis is a rare condition. To our knowledge, the utility of contrast-enhanced ultrasound (CEUS) to diagnose it is much less. PATIENT CONCERNS: A 33-year-old female was referred to our hospital due to the increase in plasma calcitonin concentration and carcino-embryonic antigen 12 months after her total thyroidectomy. To find metastasis, she received laboratory tests, gray-scale US, and CEUS...
December 2017: Medicine (Baltimore)
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