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Contrast enhanced ultrasound

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https://www.readbyqxmd.com/read/28646603/comparison-of-oral-contrast-enhanced-transabdominal-ultrasound-imaging-with-transverse-contrast-enhanced-computed-tomography-in-preoperative-tumor-staging-of-advanced-gastric-carcinoma
#1
Xuemei He, Jing Sun, Xiaoling Huang, Chun Zeng, Yinggang Ge, Jun Zhang, Jingxian Wu
OBJECTIVES: This study assessed the diagnostic performance of transabdominal oral contrast-enhanced ultrasound (US) imaging for preoperative tumor staging of advanced gastric carcinoma by comparing it with transverse contrast-enhanced computed tomography (CT). METHODS: This retrospective study included 42 patients with advanced gastric cancer who underwent laparoscopy, radical surgery, or palliative surgery because of serious complications and had a body mass index of less than 25 kg/m(2) ...
June 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28643821/non-invasive-approaches-in-the-diagnosis-of-acute-rejection-in-kidney-transplant-recipients-part-i-in-vivo-imaging-methods
#2
REVIEW
Oriane Hanssen, Pauline Erpicum, Pierre Lovinfosse, Paul Meunier, Laurent Weekers, Luaba Tshibanda, Jean-Marie Krzesinski, Roland Hustinx, François Jouret
Kidney transplantation (KTx) represents the best available treatment for patients with end-stage renal disease. Still, full benefits of KTx are undermined by acute rejection (AR). The diagnosis of AR ultimately relies on transplant needle biopsy. However, such an invasive procedure is associated with a significant risk of complications and is limited by sampling error and interobserver variability. In the present review, we summarize the current literature about non-invasive approaches for the diagnosis of AR in kidney transplant recipients (KTRs), including in vivo imaging, gene expression profiling and omics analyses of blood and urine samples...
February 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28643819/non-invasive-approaches-in-the-diagnosis-of-acute-rejection-in-kidney-transplant-recipients-part-ii-omics-analyses-of-urine-and-blood-samples
#3
REVIEW
Pauline Erpicum, Oriane Hanssen, Laurent Weekers, Pierre Lovinfosse, Paul Meunier, Luaba Tshibanda, Jean-Marie Krzesinski, Roland Hustinx, François Jouret
Kidney transplantation (KTx) represents the best available treatment for patients with end-stage renal disease. Still, the full benefits of KTx are undermined by acute rejection (AR). The diagnosis of AR ultimately relies on transplant needle biopsy. However, such an invasive procedure is associated with a significant risk of complications and is limited by sampling error and interobserver variability. In the present review, we summarize the current literature about non-invasive approaches for the diagnosis of AR in kidney transplant recipients (KTRs), including in vivo imaging, gene-expression profiling and omics analyses of blood and urine samples...
February 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28643532/dermatomyositis-with-renal-infarction-a-case-report-and-literature-review
#4
Ti Zhang, Xin Liu, Huji Xu
Renal infarction is a rare clinical entity that is not easily detected by low-sensitivity ultrasound. We herein report a case of dermatomyositis with renal infarction detected during corticosteroid therapy. The patient was followed up for 18 months. A woman who was clinically diagnosed with dermatomyositis complained of severe pain in the right flank of the low back and abdomen, accompanied by nausea and vomiting during corticosteroid therapy. Based on the findings of routine blood tests, abdominal X-ray radiography, and abdominal ultrasound, the patient was diagnosed with acute gastroenteritis and treated with levofloxacin...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28642201/combination-of-coenzyme-q10-loaded-liposomes-with-ultrasound-targeted-microbubbles-destruction-utmd-for-early-theranostics-of-diabetic-nephropathy
#5
Ting Yue, He-Lin Xu, Pian-Pian Chen, Lei Zheng, Qun Huang, Wen-Shuang Sheng, Yuan-Di Zhuang, Li-Zhuo Jiao, Ting-Ting Chi, De-Li ZhuGe, Jin-Jin Liu, Ying-Zheng Zhao, Li Lan
Diabetic nephropathy (DN) is one of the most common and lethal microvascular complications of diabetes. This study aimed to explore whether coenzymeQ10 (CoQ10) as an antioxidant combined with ultrasound-targeted microbubble destruction (UTMD) could reverse the progress of early diabetic nephropathy (DN). CoQ10 has great potential to treat early DN. However, the clinical application of CoQ10 has been limited because of its low aqueous solubility and non-specific distribution. Therefore, CoQ10-loaded liposomes (CoQ10-lip) were prepared and combined with ultrasound microbubbles for the early theranostics of DN...
June 19, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28641819/dynamic-contrast-enhanced-mr-imaging-of-carotid-vasa-vasorum-in-relation-to-coronary-and-cerebrovascular-events
#6
Juan Wang, Huijun Chen, Jie Sun, Daniel S Hippe, Huawei Zhang, Shengyuan Yu, Jianming Cai, Leixing Xie, Bao Cui, Chun Yuan, Xihai Zhao, Weimin Yuan, Hongbin Liu
BACKGROUND AND AIMS: Dynamic contrast-enhanced MR imaging (DCE-MRI) provides a noninvasive approach to the functional status of carotid adventitial vasa vasorum. Contrast extravasation rate, or K(trans), derived from kinetic modeling of adventitial enhancement, has been correlated with plaque neovascularization and inflammation. This study sought to clarify the clinical implications of K(trans) by evaluating its relationship with documented cardiovascular events (CVE). METHODS: Seventy patients with carotid plaque at clinical ultrasound examination were recruited and imaged with a previously-described bright-blood DCE-MRI protocol (spatial resolution: 0...
June 3, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28640847/heart-rate-lowering-treatment-leads-to-a-reduction-in-vulnerable-plaque-features-in-atherosclerotic-rabbits
#7
Raf H M van Hoof, Evelien Hermeling, Judith C Sluimer, Julie Salzmann, Arnold P G Hoeks, Jérôme Roussel, Mat J A P Daemen, Harry Struijker-Boudier, Joachim E Wildberger, Sylvia Heeneman, M Eline Kooi
OBJECTIVE: To investigate the effect of a heart rate (HR) lowering agent (Ivabradine) on features of atherosclerotic plaque vulnerability with magnetic resonance imaging (MRI), ultrasound imaging, and histology. APPROACH AND RESULTS: Atherosclerosis was induced in the abdominal aorta of 19 rabbits. Nine rabbits were treated with Ivabradine (17 mg/kg/day) during the entire study period. At week 14, imaging was performed. Plaque size was quantified on contrast-enhanced T1-weighted MR images...
2017: PloS One
https://www.readbyqxmd.com/read/28639831/diagnostic-performance-and-confidence-of-contrast-enhanced-ultrasound-in-the-differential-diagnosis-of-cystic-and-cysticlike-liver-lesions
#8
Antonio Corvino, Orlando Catalano, Fabio Corvino, Fabio Sandomenico, Antonella Petrillo
OBJECTIVE: The aims of this study were to assess the diagnostic performance of contrast-enhanced ultrasound (CEUS) in the characterization of atypical cystic and cysticlike focal liver lesions in comparison with conventional US and to determine whether the use of CEUS can reduce the need for further diagnostic workup. SUBJECTS AND METHODS: In a 3-year period 48 patients with 50 atypical cystic and cysticlike lesions found at conventional US underwent CEUS. Diagnostic confirmation was obtained in cytohistopathologic examinations, with other imaging modalities, and in follow-up...
June 22, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28639154/inflammatory-myofibroblastic-tumor-of-the-gallbladder-a-case-report-and-literature-review
#9
Takahiro Yamada, Takeshi Hisa, Satoshi Shiozawa, Akiharu Kudo, Ryutaro Furukawa
A 50-year-old man had undergone chemotherapy and radiotherapy for malignant lymphoma 1 year earlier. Follow-up computed tomography revealed a gallbladder polyp. Transabdominal ultrasound demonstrated a 20-mm hypoechoic sessile polyp with basal waist in the gallbladder fundus; the surface was covered with a hyperechoic layer of non-uniform thickness. On contrast-enhanced computed tomography, the polyp showed an early uniform and sustained staining pattern. Magnetic resonance imaging revealed that the polyp had low and slightly high signal intensities on T1- and T2-weighted imaging, respectively...
June 21, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28632786/diagnostic-accuracy-of-magnetic-resonance-computed-tomography-and-contrast-enhanced-ultrasound-in-radiological-multimodality-assessment-of-peribiliary-liver-metastases
#10
Vincenza Granata, Roberta Fusco, Orlando Catalano, Antonio Avallone, Raffaele Palaia, Gerardo Botti, Fabiana Tatangelo, Francesco Granata, Marco Cascella, Francesco Izzo, Antonella Petrillo
PURPOSE: We compared diagnostic performance of Magnetic Resonance (MR), Computed Tomography (CT) and Ultrasound (US) with (CEUS) and without contrast medium to identify peribiliary metastasis. METHODS: We identified 35 subjects with histological proven peribiliary metastases who underwent CEUS, CT and MR study. Four radiologists evaluated the presence of peribiliary lesions, using a 4-point confidence scale. Echogenicity, density and T1-Weigthed (T1-W), T2-W and Diffusion Weighted Imaging (DWI) signal intensity as well as the enhancement pattern during contrast studies on CEUS, CT and MR so as hepatobiliary-phase on MRI was assessed...
2017: PloS One
https://www.readbyqxmd.com/read/28631903/-solitary-stones-of-the-lower-renal-calyx-how-to-treat
#11
A G Martov, D V Ergakov, A S Andronov, S V Dutov, R A Takhaev, Z I Kil'chukov, S A Moskalenko
INTRODUCTION: The choice of treatment for the stones of the lower renal calyx is one of the challenging issues of modern urology. The aim of this retrospective and prospective study was to investigate the clinical effectiveness and safety of 3 modern minimally invasive techniques for treating renal stones: percutaneous (PNL) and transurethral (TNL) nephrolithotripsy and extracorporeal shock wave lithotripsy (ESWL) in patients with solitary lower calyx stones sized from 10 to 15 mm. MATERIALS AND METHODS: The study included 136 patients with symptomatic stones of the lower calyces, who underwent ESWL, PNL and TNL from November 2010 to the present day...
June 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28626910/intravenous-and-intracavitary-use-of-contrast-enhanced-ultrasound-in-the-evaluation-and-management-of-complicated-pediatric-pneumonia
#12
Annamaria Deganello, Vasileios Rafailidis, Maria E Sellars, Aikaterini Ntoulia, Kleanthi Kalogerakou, Gary Ruiz, David O Cosgrove, Paul S Sidhu
Pediatric pneumonia can be complicated by necrotizing pneumonia or a parapneumonic effusion either in the form of an empyema or a clear effusion. Ultrasonography (US) and computed tomography represent well-established modalities for evaluation of complicated pediatric pneumonia. Contrast-enhanced ultrasound (CEUS) was recently introduced and is gaining increasing acceptance in pediatric imaging. In this case series, we present our initial experience with both intravenous and intracavitary use of CEUS in children with complicated pneumonia...
June 19, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28625661/resting-limb-muscle-perfusion-during-inspiratory-muscle-loading-in-hypoxia-and-normoxia
#13
Hannes Klenze, Thomas Christian Köhler, Franziska Farquharson, Stephan Walterspacher, Daniel Duerschmied, Kai Roecker, Hans-Joachim Kabitz, David Johannes Walker
INTRODUCTION: Fatiguing of respiratory muscles reduces peripheral muscle perfusion. Further, acute hypoxia enhances respiratory muscle fatigue. This study investigated the effects of inspiratory muscle loading (IML) on resting locomotor muscle perfusion in hypoxia compared to normoxia. METHODS: Ten subjects completed two study days of fatiguing IML (blinded, randomized) in normobaric hypoxia (targeted oxygen saturation 80%) and normoxia, respectively. Contrast-enhanced ultrasound (CEUS) of the gastrocnemius muscle and popliteal doppler ultrasonography were used to monitor muscle perfusion...
June 15, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28624924/evaluation-of-hepatic-fibrosis-a-review-from-the-society-of-abdominal-radiology-disease-focus-panel
#14
REVIEW
Jeanne M Horowitz, Sudhakar K Venkatesh, Richard L Ehman, Kartik Jhaveri, Patrick Kamath, Michael A Ohliger, Anthony E Samir, Alvin C Silva, Bachir Taouli, Michael S Torbenson, Michael L Wells, Benjamin Yeh, Frank H Miller
Hepatic fibrosis is potentially reversible; however early diagnosis is necessary for treatment in order to halt progression to cirrhosis and development of complications including portal hypertension and hepatocellular carcinoma. Morphologic signs of cirrhosis on ultrasound (US), computed tomography (CT), and magnetic resonance imaging (MRI) alone are unreliable and are seen with more advanced disease. Newer imaging techniques to diagnose liver fibrosis are reliable and accurate, and include magnetic resonance elastography and US elastography (one-dimensional transient elastography and point shear wave elastography or acoustic radiation force impulse imaging)...
June 17, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28621699/diagnostic-value-of-single-source-dual-energy-spectral-computed-tomography-for-papillary-thyroid-microcarcinomas
#15
Lin Li, Yong Wang, De-Hong Luo, Yan-Feng Zhao, Meng Lin, Wei Guo, Lei Hu, Chun-Wu Zhou, Xin-Ming Zhao
BACKGROUND: Ultrasound (US) and computed tomography (CT) are common diagnostic imaging methods for detecting and diagnosing papillary thyroid microcarcinoma (PTMC). However, single-source dual-energy spectral computed tomography (spectral CT) reduces beam hardening artefacts and optimizes contrast, which may add value in detecting PTMC. OBJECTIVE: To investigate values of applying single-source dual-energy spectral CT for diagnosing PTMCs, in comparison with high frequency ultrasound and conventional polychromatic images...
June 10, 2017: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/28620930/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-the-role-of-ultrasound
#16
A C Testa, G Ferrandina, F Moro, T Pasciuto, M C Moruzzi, I De Blasis, F Mascilini, E Foti, R Autorino, A Collarino, B Gui, G F Zannoni, M A Gambacorta, A L Valentini, V Rufini, G Scambia
OBJECTIVE: Chemoradiation-based neoadjuvant treatment followed by radical surgery is an alternative therapeutic strategy for locally advanced cervical cancer (LACC) -stage ≥ IB2 (except of IIA1)- but ultrasound variables used to predict neoadjuvant partial response are not well defined. The goal of this study was to prospectively analyze the potential role of transvaginal ultrasound (TVUS) in early predicting pathologically assessed residual disease in a large, single-institution series of LACC patients triaged to neoadjuvant treatment followed by radical surgery...
June 16, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28619244/impact-of-avascular-areas-as-measured-by-contrast-enhanced-harmonic-eus-on-the-accuracy-of-fine-needle-aspiration-for-pancreatic-adenocarcinoma
#17
Ken Kamata, Mamoru Takenaka, Shunsuke Omoto, Takeshi Miyata, Kosuke Minaga, Kentaro Yamao, Hajime Imai, Toshiharu Sakurai, Naoshi Nishida, Takaaki Chikugo, Yasutaka Chiba, Ippei Matsumoto, Yoshifumi Takeyama, Masatoshi Kudo
BACKGROUND AND AIMS: Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is used for the diagnosis of pancreatic adenocarcinoma, but sometimes the method results in a false negative. Occasionally, an avascular area may be observed within the pancreatic adenocarcinoma tumor during contrast-enhanced harmonic endoscopic ultrasonography (CH-EUS). The aim of this study was to evaluate whether the diagnostic sensitivity of EUS-FNA for pancreatic adenocarcinoma was affected by the presence of avascularity on CH-EUS...
June 12, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28615645/intravascular-forward-looking-ultrasound-transducers-for-microbubble-mediated-sonothrombolysis
#18
Jinwook Kim, Brooks D Lindsey, Wei-Yi Chang, Xuming Dai, Joseph M Stavas, Paul A Dayton, Xiaoning Jiang
Effective removal or dissolution of large blood clots remains a challenge in clinical treatment of acute thrombo-occlusive diseases. Here we report the development of an intravascular microbubble-mediated sonothrombolysis device for improving thrombolytic rate and thus minimizing the required dose of thrombolytic drugs. We hypothesize that a sub-megahertz, forward-looking ultrasound transducer with an integrated microbubble injection tube is more advantageous for efficient thrombolysis by enhancing cavitation-induced microstreaming than the conventional high-frequency, side-looking, catheter-mounted transducers...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28612537/-convention-ultrasound-and-contrast-enhanced-ultrasound-imaging-in-the-diagnosis-of-placenta-implantation
#19
Wen Xiong, Hong Luo
OBJECTIVES: To determine the value of conventional ultrasound (US) and contrast-enhanced ultrasound (CEUS) in the diagnosis of placenta residue with implantation. METHODS: We retrospectively analyzed 112 cases of placenta remnants from Apr. 2013 to Mar. 2016, all of which were confirmed by pathological results. The cases were divided into implanted (n =74) and non-implanted (n =38) groups. We compared the characteristics of US and CEUS imaging between the two groups...
March 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28609114/do-incidental-hyperechoic-renal-lesions-measuring-up-to-1-cm-warrant-further-imaging-outcomes-of-161-lesions
#20
Ankur M Doshi, Abimbola Ayoola, Andrew B Rosenkrantz
OBJECTIVE: The purpose of this study was to determine the outcomes of hyperechoic renal lesions measuring 1 cm or less at ultrasound examination. MATERIALS AND METHODS: This retrospective study included 161 hyperechoic renal lesions measuring 1 cm or less at ultrasound that were evaluated with follow-up ultrasound, CT, or MRI. Follow-up imaging examinations were reviewed to assess for definitive lesion characterization or size stability. RESULTS: Follow-up included 11 unenhanced CT, 39 contrast-enhanced CT, 52 unenhanced and contrast-enhanced CT, two unenhanced MRI, 50 unenhanced and contrast-enhanced MRI, and 87 ultrasound examinations...
June 13, 2017: AJR. American Journal of Roentgenology
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