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Ultrasound,vascular,color doppler

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https://www.readbyqxmd.com/read/28315202/validation-of-bevacizumab-therapy-effect-on-colon-cancer-subtypes-by-using-whole-body-imaging-in-mice
#1
Ivan Vuletic, Kedi Zhou, Hui Li, Huichen Bai, Xiangxi Meng, Sihao Zhu, Yichen Ding, Jun Li, Hongfang Sun, Qiushi Ren
PURPOSE: Preclinical imaging offers a useful tool for monitoring cancer biological behavior and therapy in vivo without the necessity of animal surgery. The following paper describes our examination of tumor progress and anti-angiogenic therapy with Bevacizumab on colon cancer subtypes (SW480 and SW620) by using different non-invasive real-time in vivo imaging techniques. PROCEDURES: Color Doppler ultrasound imaging (CDUI) was used to observe the formation of new blood vessels; a homemade fluorescence reflectance imaging (FRI) apparatus was mainly used to test the difference in VEGFR2 expression between the tumor subtypes...
March 17, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28283218/long-term-performance-evaluation-of-small-diameter-vascular-grafts-based-on-polyvinyl-alcohol-hydrogel-and-dextran-and-mscs-based-therapies-using-the-ovine-pre-clinical-animal-model
#2
Nuno Alexandre, Irina Amorim, Ana Rita Caseiro, Tiago Pereira, Rui Alvites, Alexandra Rêma, Ana Gonçalves, Guilherme Valadares, Elísio Costa, Alice Santos-Silva, Miguel Rodrigues, Maria Ascensão Lopes, André Almeida, José Domingos Santos, Ana Colette Maurício, Ana Lúcia Luís
The functional and structural performance of a 5cm synthetic small diameter vascular graft (SDVG) produced by the copolymerization of polyvinyl alcohol hydrogel with low molecular weight dextran (PVA/Dx graft) associated to mesenchymal stem cells (MSCs)-based therapies and anticoagulant treatment with heparin, clopidogrel and warfarin was tested using the ovine model during the healing period of 24 weeks. The results were compared to the ones obtained with standard expanded polyetetrafluoroethylene grafts (ePTFE graft)...
March 7, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28261745/ultrasound-examination-with-color-power-doppler-to-assess-the-early-response-of-apical-periodontitis-to-the-endodontic-treatment
#3
Elisabetta Cotti, Stefano Andrea Esposito, Davide Musu, Girolamo Campisi, Hagay Shemesh
OBJECTIVES: The purpose of this study was to assess the possibility to detect early vascular changes in apical periodontitis (AP) using ultrasound examination with color power Doppler (US-CPD) and to establish a correlation between the early response of AP to treatment and its potential healing. MATERIALS AND METHODS: Twenty-one apical lesions were visualized with US-CPD before endodontic treatment, 1 week after the first access to endodontic system and 4 weeks after root canal obturation...
March 6, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28252628/-specific-features-of-joint-ultrasound-study-in-patients-with-rheumatoid-arthritis
#4
E B Komarova, O A Rebrova, I I Pokrushka, Yu G Kindritskaya
AIM: To study the specific features of joint ultrasound readings in rheumatoid arthritis (RA) in relation to its duration. SUBJECTS AND METHODS: A total of 162 patients (mean age, 43.54±11.1 years) with a mean RA duration of 3.22±3.13 years were examined. Gray-scale ultrasound study (USS) of hand and ankle joints was performed using color Doppler energy imaging. Group 1 included 78 patients with a RA duration of less than 2 years; Group 2 consisted of 84 patients with a RA duration of more than 2 years...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28224305/high-frequency-color-doppler-ultrasound-as-the-first-diagnostic-and-monitoring-choice-for-early-superficial-high-flow-vascular-malformations
#5
Lei Chang, Dongze Lv, Yunbo Jin, Wenxin Yu, Xi Yang, Gang Ma, Hui Chen, Xiaoxi Lin
Diagnosis and monitoring of early high-flow vascular malformations could be a meaningful pursuit. However, there has been no ideal method for their long-term monitoring and prognosis. We examined 21 early high-flow vascular malformations in this study and deemed that high-frequency color Doppler ultrasound could be regarded as the first diagnostic and monitoring choice for early high-flow vascular malformations at present.
February 21, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28219128/-correlation-between-polymorphism-of-angiotensin-converting-enzyme-gene-and-the-lower-extremity-atherosclerosis-in-type-2-diabetes-mellitus-patients
#6
Y Wang, T H Zhu, J W Tong, J F Wei, J X Sheng, X P Jin, L H Mu, X Chen
Objective: To explore the correlation between polymorphism of the angiotensin-converting enzyme (ACE) gene and lower extremity atherosclerosis (LEA) in type 2 diabetes mellitus (T2DM) patients. Methods: A total of 380 patients diagnosed with T2DM in Department of Endocrinology from June 2015 to March 2016 were enrolled and divided into two groups: group A had no LEA (n=120) and group B had LEA(n=260). Color doppler ultrasound was used to detect the vascular lesions of the patients. For all patients in groups A and B, the polymerase chain reaction (PCR) was applied to determined the insertion/deletion polymorphism in intron 16 of the ACE gene of the patients...
February 14, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28211004/point-of-care-ultrasound-and-doppler-ultrasound-evaluation-of-vascular-injuries-in-penetrating-and-blunt-trauma
#7
REVIEW
Miguel Angel Montorfano, Fernando Pla, Leonardo Vera, Omar Cardillo, Stefano Geniere Nigra, Lisandro Miguel Montorfano
BACKGROUND: The aim of this study is to describe point-of-care ultrasound and Color flow Duplex Doppler characteristics of penetrating and blunt trauma-related vascular injuries of the limbs and neck. METHODS: Penetrating and blunt trauma-related vascular injuries such as vein disruption, intimal flap, deep vein thrombosis, arterial dissection, pseudoaneurysm, and arteriovenous fistulae are discussed in this manuscript. Images of the most significant lesions of our personal clinical experience are presented to illustrate point-of-care ultrasound and Color flow Duplex Doppler ultrasound findings...
December 2017: Critical Ultrasound Journal
https://www.readbyqxmd.com/read/28195846/color-doppler-ultrasound-assessment-of-activity-in-keloids
#8
Nelson Lobos, Ximena Wortsman, Fernando Valenzuela, Faustino Alonso
BACKGROUND: The assessment of activity in keloids may be critical for defining their management. There is a lack of clinical scorings designed for the evaluation of keloids and biopsies may be contraindicated. OBJECTIVE: To assess the sonographic activity of keloids in comparison with clinical scoring. MATERIALS AND METHODS: A retrospective study of the clinical and color Doppler ultrasound (CDU) images of patients medically derived to CDU with the diagnosis of keloid was performed...
February 9, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28180194/prospective-evaluation-of-quasistatic-ultrasound-elastography-use-compared-with-baseline-us-for-parotid-gland-lesions-preliminary-results-of-elasticity-contrast-index-eci-evaluation
#9
Vito Cantisani, Emanuele David, Armando De Virgilio, Paul S Sidhu, Hektor Grazhdani, Antonio Greco, Marco De Vincentiis, Alessandro Corsi, Flaminia De Cristofaro, Luca Brunese, Fabrizio Calliada, Alfredo Blandino, Mario Tombolini, Giorgio Ascenti, Roberto Stramare, Marcello Caratozzolo, Ferdinando D'Ambrosio
AIMS: To assess the diagnostic value of elasticity contrast index (ECI) elastography, in comparison with conventional ultrasound for the differentiation of benign and malignant parotid lesions. MATERIAL AND METHODS: Sixty-three consecutive patients with parotid gland tumors, treated surgically at a single tertiary center were enrolled. Ultrasound evaluation consisted of B-mode, color-Doppler and quasistatic ultrasound elastography (USE), conducted with the ECI technique...
January 31, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28144402/impact-of-contrast-enhanced-ultrasound-in-patients-with-renal-function-impairment
#10
Rossano Girometti, Tiziano Stocca, Elena Serena, Antonio Granata, Michele Bertolotto
AIM: To investigate the role of contrast enhanced ultrasound (CEUS) in evaluating patients with renal function impairment (RFI) showing: (1) acute renal failure (ARF) of suspicious vascular origin; or (2) suspicious renal lesions. METHODS: We retrospectively evaluated patients addressed to CEUS over an eight years period to rule-out vascular causes of ARF (first group of 50 subjects) or assess previously found suspicious renal lesions (second group of 41 subjects with acute or chronic RFI)...
January 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28138410/standards-for-scrotal-ultrasonography
#11
REVIEW
Janusz F Tyloch, Andrzej Paweł Wieczorek
The paper presents a description of essential equipment requirements for scrotal ultrasonography, including current ultrasound techniques, as well as a review of the most common scrotal pathologies. Patient preparation for the examination as well as ultrasound methodology for the assessment of scrotal and inguinal canal structures are discussed. The standard for scrotal ultrasound examination includes a precise B-mode evaluation, including testicular volumetric assessment performed using automatic measurement options based on the formula of a rotating ellipsoid or three measurements perpendicular to one another...
December 2016: Journal of Ultrasonography
https://www.readbyqxmd.com/read/28132101/sonographic-characterization-of-hoffa-s-fat-pad-a-pilot-study
#12
Erika Vera-Pérez, Guadalupe Sánchez-Bringas, Lucio Ventura-Ríos, Cristina Hernández-Díaz, Socorro Cortés, Marwin Gutiérrez, Carlos Pineda
This study addresses a topic that was previously unaddressed in the literature: the normal sonographic appearance of the Hoffa's fat pad (HFP) in young, asymptomatic subjects. The aim of the study is to describe the sonoanatomical features of HFP, including its echostructure, echogenicity, elasticity, and vascularization, in subjects without knee pathology. Knees of healthy subjects were examined with grayscale ultrasound (US) to determine the sonographic characteristics of the HFP. Echogenicity was assessed by pixel intensity quantification...
May 2017: Rheumatology International
https://www.readbyqxmd.com/read/28121624/destructive-effect-of-hifu-on-rabbit-embedded-endometrial-carcinoma-tissues-and-their-vascularities
#13
Liming Guan, Gang Xu
OBJECTIVES: To evaluate damage effect of High-intensity focused ultrasound on early stage endometrial cancer tissues and their vascularities. MATERIALS AND METHODS: Rabbit endometrial cancer models were established via tumor blocks implantation for a prospective control study. Ultrasonic ablation efficacy was evaluated by pathologic and imaging changes. The target lesions of experimental rabbits before and after ultrasonic ablation were observed after autopsy. The slides were used for hematoxylin-eosin staining, elastic fiber staining and endothelial cell staining; the slides were observed by optical microscopy...
March 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28117635/color-doppler-ultrasound-assessment-for-identifying-perforator-arteries-of-the-second-dorsal-metacarpal-flap
#14
Mitsuhiko Nanno, Norie Kodera, Yuji Tomori, Yusuke Hagiwara, Shinro Takai
PURPOSE: The second dorsal metacarpal (SDMC) perforator flap has been widely used for the soft tissue reconstruction of the hand. However, it is difficult to identify the depth and branches of the perforators of the second dorsal metacarpal artery (SDMA) using only handheld acoustic Doppler flowmetry (HADF), which is the most common method. The purpose of this study was to compare the results of examination by color Doppler ultrasonography (CDU) with those of HADF and to evaluate the efficacy of CDU for detection of the perforators to be used in the design of the SDMC flap...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28105123/effect-of-anti-vegf-drugs-combined-with-photodynamic-therapy-in-the-treatment-of-age-related-macular-degeneration
#15
Yi Dong, Guangming Wan, Panshi Yan, Yue Chen, Wenzhan Wang, Guanghua Peng
We analyzed the effects of anti-vascular endothelial growth factor (VEGF) drugs combined with photodynamic therapy (PDT) in the treatment of age-related macular degeneration (AMD). Ninety-six cases (192 eyes) of AMD were included in this study and randomly divided into the observation group and control group (n=48 cases per group). The control group was administered the treatment of Lucentis intravitreal injection alone and the observation group was administered Lucentis combined with PDT. The therapeutic effects were compared...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28090635/sonographic-features-and-diagnosis-of-peripheral-schwannomas
#16
Fan Yang, Xian-Xiang Chen, Huo-Lin Wu, Ji-Fa Zhu, Yuan Chen, Ling-Fang Yu, Xiao-Juan Huang
BACKGROUND: To determine the sonographic features of peripheral schwannomas. METHODS: This retrospective study included 54 cases of schwannoma in 51 patients. Ultrasonography (US) and MRI were performed in all patients. The US features of each tumor were analyzed and compared with pathologic findings. The US target sign was compared with the MRI findings. RESULTS: On US, 53 of the 54 schwannomas had a regular shape and clear margins, and one had an irregular shape...
March 4, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28076877/ultrasound-imaging-for-ovarian-and-deep-infiltrating-endometriosis
#17
Caterina Exacoustos, Errico Zupi, Emilio Piccione
The main challenges of imaging for endometriosis are the detection of nonovarian disease and the evaluation of the extension of the disease into pelvic structures. Transvaginal ultrasonography (TVS) has been proposed as the first-line imaging technique because it allows extensive exploration of the pelvis. The "typical" endometrioma is a unilocular cyst with homogeneous low-level echogenicity (ground glass echogenicity) of the cyst fluid. The use of color Doppler helps avoid classifying malignancies as endometriomas, defining the presence of vascular flow in papillations...
January 2017: Seminars in Reproductive Medicine
https://www.readbyqxmd.com/read/28073202/pseudoaneurysm-with-arteriovenous-fistula-of-the-prostate-after-pelvic-trauma-ultrasound-imaging
#18
Andrea B Galosi, Camilla Capretti, Luca Leone, Marco Tiroli, Daniele Cantoro, Massimo Polito
Pseudoaneurysm (PA) associated with an arteriovenous fistula (AVF) of the internal pudendal artery branches are very uncommon. We report a case of post-traumatic PA with AVF connected to Santorini plexus. Diagnosis was made with trans-rectal ultrasound (TRUS) after recurrent hematuria. TRUS reported a 1.7 × 1.4 × 1.5 cm anechoic area, on anterior prostate apex close to Santorini plexus. The use of color Doppler in this area revealed high flow velocity that was indicative for AVF. The feeding artery was a distal branch of the left pudenda artery...
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28063264/preimplantation-3d-ultrasound-current-uses-and-challenges
#19
Sushila Arya, Sanja Kupesic Plavsic
The preimplantation ultrasound (US) refers to targeted imaging of the uterus and adnexa prior to assisted reproductive techniques (ART) to optimize the infertility treatment outcomes. After a thorough evidence based literature review, we propose the use of transvaginal three-dimensional (3D) US during the early follicular phase. A systematic approach for 3D US examination consists of a detailed examination of the uterine shape, size and contour, evaluation of the endometrial thickness, volume, pattern and vascularity, and assessment of the junctional zone regularity, echogenicity and thickness...
January 7, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28058962/short-term-effect-of-ultrasound-guided-low-molecular-weight-hyaluronic-acid-injection-on-clinical-outcomes-and-imaging-changes-in-patients-with-rheumatoid-arthritis-of-the-ankle-and-foot-joints-a-randomized-controlled-pilot-trial
#20
Chien-Chih Wang, Si-Huei Lee, Hsiao-Yi Lin, Fu-Wei Liu, Hong-Jen Chiou, Rai-Chi Chan, Chen-Liang Chou
To determine whether hyaluronic acid (HA) injection into rheumatoid arthritis ankles and feet can achieve improvement in foot function and reduce synovial hyper-vascularization. Forty-four patients with RA having unilateral or bilateral painful ankle and foot involvement (N = 75) were studied. All the patients were randomized to receive HA (N = 40) or lidocaine (LI) (N = 35) injection at 2-week intervals; Clinical assessments were performed using a visual analog scale (VAS) and foot function index (FFItotal) including subscales of pain (FFIpain) before injection at baseline, 4 weeks (first evaluation) and 12 weeks (secondary evaluation)...
January 6, 2017: Modern Rheumatology
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