Read by QxMD icon Read

Contrast AND enhanced AND Venous AND ultrasound

Fumito Saijo, Mitsuhisa Mutoh, Joho Tokumine, Odaka Yoshinobu, Hikaru Hama, Takashige Namima, Mii Shibahara, Hiromi Tokumura
BACKGROUND: Totally implantable venous access devices are valuable tools for total parenteral nutrition, chemotherapy, and long-term intravenous therapy. However, late catheter fracture is a well-known complication of totally implantable venous access device, particularly in Groshong silicone catheter. Recently, a specific type of totally implantable venous access device made with Groshong silicone has been introduced to facilitate power injection of contrast medium for enhanced computed tomography...
March 11, 2019: Journal of Vascular Access
Nassim Fard, Heinz-Peter Schlemmer, Friedhelm Raue, Björn Jobke
INTRODUCTION: Liver metastases from neuroendocrine tumors in multiple endocrine neoplasia syndrome are common (75%) and significantly impairs the prognosis. Characterisation of liver lesions in these patients is challenging, as liver metastases are difficult to differentiate from benign liver lesions such as haemangioma. METHODS: In this study we aimed to characterize the radiological findings of hepatic metastases in MEN patients. The findings of contrast-enhanced CT were considered for the main diagnosis...
2019: PloS One
Ke Han, Han-Hwa Hu, A-Ching Chao, Feng-Chi Chang, Chih-Ping Chung, Hung-Yi Hsu, Wen-Yung Sheng, Jiang Wu
Background: Previous neuroimaging and ultrasound studies suggested that compression and stenosis of the internal jugular vein (IJV) in patients with transient global amnesia (TGA) may impair IJV drainage, while a patent IJV releases intracranial pressure caused by the Valsalva maneuver (VM). Methods: Seventy-nine TGA patients with complete ultrasound examination data during admission were recruited prospectively to evaluate IJV drainage, which included the time-averaged mean velocity, and the cross-sectional lumen area of the IJV at the vein's middle (J2) and distal (J3) segments and the cross-sectional area during a 10-s VM to test for any retrograde or anti-grade flow...
2019: Frontiers in Neurology
Audun E Berstad, Knut Brabrand, Rune Horneland, Trygve Syversveen, Håkon Haugaa, Trond G Jenssen, Aksel Foss
BACKGROUND: Arterial and venous thrombosis are feared complications of pancreas transplantation (PTx). Microbubble contrast-enhanced ultrasound (CEUS) is a non-invasive imaging technique that can augment diagnostic capabilities of transplant organ perfusion. PURPOSE: To document the state to which CEUS can improve the vascular evaluation of PTx compared to conventional Doppler ultrasound (US) directly after surgery. MATERIAL AND METHODS: A total of 129 consecutive PTx in 128 adult patients were eligible for inclusion...
February 12, 2019: Acta Radiologica
Lo-Yi Lin, Hong-Jen Chiou, Yi-Hong Chou, Hsin-Kai Wang, Yi-Chen Lai, Yun-Hui Lin
Contrast-enhanced ultrasound (CEUS) has been used to diagnose gallbladder (GB) diseases for recent years because it is sensitive to visualize vascularity. Herein, we report a case who had a 1.7 cm × 1.2 cm polypoid lesion located in the gallbladder fundus with a feeding artery located in the stalk. On CEUS, the lesion showed early arterial phase enhancement (time to peak enhancement 18 s), persisting throughout the venous and delay phases. This enhancing pattern suggested that the lesion was a GB adenoma rather than a GB carcinoma...
October 2018: Journal of Medical Ultrasound
Furkan Kaya, Furkan Ufuk, Nevzat Karabulut
OBJECTIVE: We aimed to determine the diagnostic performance of the contrast-enhanced and unenhanced combined pulmonary arterial MRI and magnetic resonance venography techniques in the diagnosis of venous thromboembolism (VTE). METHODS: 44 patients who underwent CT pulmonary angiography (CTPA) for suspected PE constituted the study population. Patients underwent combined pulmonary and lower extremity MRI, and Doppler ultrasonography within 72 h after CTPA. Combined MRI included two sequences: unenhanced steady-state free precession (SSFP) and contrast-enhanced three-dimensional (3D) gradient echo (GRE)...
January 10, 2019: British Journal of Radiology
Hiroki Chiba, Yoshihiro Seo, Seika Sai, Mikiko Namekawa, Tomoko Ishizu, Kazutaka Aonuma
The vasopressin type 2 receptor antagonist tolvaptan may have renoprotective effects in patients with heart failure (HF). This study aimed to reveal the renoprotective effect of tolvaptan from the viewpoint of hemodynamic combined with catheter and ultrasound examinations in a hypertensive HF model. Dahl salt-sensitive rats (n = 24) were fed an 8% high-salt diet after the age of 6 weeks and were treated with tolvaptan (n = 16) or vehicle (control group; n = 8). The tolvaptan-treated rats were divided into two groups: a low-dose group (0...
December 17, 2018: Hypertension Research: Official Journal of the Japanese Society of Hypertension
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...
December 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
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"