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https://www.readbyqxmd.com/read/29148586/a-dynamic-ultrasound-simulation-of-a-pulsating-three-layered-cca-for-validation-of-2d-wall-motion-and-blood-velocity-estimation-algorithms
#1
Xiao Hu, Yufeng Zhang, Guanghui Cai, Kexin Zhang, Li Deng, Lian Gao, Suya Han, Jianhua Chen
PURPOSE: A dynamic ultrasound simulation model for the common carotid artery (CCA) with three arterial layers for validation of 2D wall motion and blood velocity estimation algorithms is proposed in present study. This model describes layers with not only characteristics of echo distributions conforming to clinical ones, but also varying thicknesses, axial and radial displacements with pulsatile blood pressure during a cardiac cycle. METHODS: The modeling process is as follows: first, a geometrical model according with the clinical structure size of a CCA is built based on the preset layer thicknesses and the diameter of lumen...
November 17, 2017: Medical Physics
https://www.readbyqxmd.com/read/29141750/use-of-a-novel-portable-three-dimensional-scanner-to-measure-limb-volume-and-circumference-in-patients-with-filarial-lymphedema
#2
Channa Yahathugoda, Michael J Weiler, Ramakrishna Rao, Lalindi De Silva, J Brandon Dixon, Mirani V Weerasooriya, Gary J Weil, Philip J Budge
The World Health Organization's Global Program to Eliminate Lymphatic Filariasis (LF) has reduced LF transmission worldwide, but millions remain affected by filarial lymphedema. Tools for clinically monitoring lymphedema in developing nations are limited. We tested a novel, portable, infrared three-dimensional (3D) scanner against water displacement (WD) and tape measurement of limb circumference (TMLC) among patients with filarial leg lymphedema in Galle, Sri Lanka. Outcomes were accuracy and reproducibility of scanner measurements...
October 16, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29139310/pudendal-nerve-injury-impairs-anorectal-function-and-health-related-quality-of-life-measures-%C3%A2-2-years-after-3d-conformal-radiotherapy-for-prostate-cancer
#3
Eng Eric Yeoh, Rochelle Botten, Addolorata Di Matteo, Marcus Tippett, Jonathon Hutton, Robert Fraser, Phillip G Dinning, David Wattchow
PURPOSE: To compare GI symptoms, measures of generic and disease specific health related quality of life (HRQoL), anorectal and pudendal nerve function and anal sphincter morphology between (i) patients ≥2 years after 3D conformal radiotherapy (3D-CRT)±high dose rate (HDR) brachytherapy for carcinoma of the prostate and aged matched patients before radiotherapy and (ii) symptomatic and asymptomatic patients ≥2 years after 3D-CRT ± HDR brachytherapy. MATERIAL AND METHODS: Methodology included: (i) modified LENT-SOMA scales for GI symptoms, (ii) EORTC QLQ-C30 and EORTC QLQ-PR25 questionnaires for generic and disease specific HRQoL, (iii) anorectal manometry and terminal motor latency for anorectal and pudendal nerve function and (iv) endorectal ultrasound for anal sphincter morphology...
November 15, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/29137799/ultrasound-irradiation-effect-on-morphological-properties-of-a-3d-nano-zinc-ii-supramolecular-coordination-polymer
#4
Hai Ning Chang, Suo Xia Hou, Zeng Chuan Hao, Guang Hua Cui
Nano-structures of [Zn(L)(atpt)]n (1) (L=1,2-bis(2-methylbenzimidazol-1-ylmethyl)benzene and H2atpt=2-aminoterephthalic acid) were obtained by hydrothermal and sonochemical approaches, characterized by scanning electron microscopy (SEM), IR, powder X-ray diffraction (PXRD), and elemental analysis. CP 1 features a 2D (4,4) network with the point symbol {4(4).6(2)}, the 3D supramolecular architecture in CP 1 is controlled through π⋯π stacking interactions. The influence of various concentrations of initial reagents, power of ultrasound irradiation, and ultrasound time on the morphology and size of nano-structured CP 1 were studied in detail...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29135072/measuring-human-placental-blood-flow-with-multidelay-3d-grase-pseudocontinuous-arterial-spin-labeling-at-3t
#5
Xingfeng Shao, Dapeng Liu, Thomas Martin, Teresa Chanlaw, Sherin U Devaskar, Carla Janzen, Aisling M Murphy, Daniel Margolis, Kyunghyun Sung, Danny J J Wang
BACKGROUND: Placenta influences the health of both a woman and her fetus during pregnancy. Maternal blood supply to placenta can be measured noninvasively using arterial spin labeling (ASL). PURPOSE: To present a multidelay pseudocontinuous arterial spin labeling (pCASL) combined with a fast 3D inner-volume gradient- and spin-echo (GRASE) imaging technique to simultaneously measure placental blood flow (PBF) and arterial transit time (ATT), and to study PBF and ATT evolution with gestational age during the second trimester...
November 14, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29134715/relationship-between-follicular-volume-and-oocyte-competence-blastocyst-development-and-live-birth-rate-optimal-follicle-size-for-oocyte-retrieval
#6
Barbara Wirleitner, Jasmin Okhowat, Lucie Vištejnová, Milena Králíčková, Marie Karlíková, Pierre Vanderzwalmen, Fabien Ectors, Libor Hradecký, Maximilian Schuff, Maximilian Murtinger
OBJECTIVES: To analyse the oocyte competence in GnRHa stimulation cycles with regard to maturity, fertilization and blastocyst rate and clinical outcome (pregnancy and live birth rate) in correlation to follicular volume measured by 3D sonography and follicular fluid composition. METHODS: This was a prospective single-centre study conducted in the period June 2012 - June 2014 including 118 ovum pick-ups (OPUs) with subsequent embryo transfers (ET). Out of 1,493 aspirated follicles we analysed 1,236 follicles and traced oocytes grouped according to follicular volume...
November 14, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29119649/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-2-the-role-of-ultrasound-after
#7
Antonia Carla Testa, Francesca Moro, Tina Pasciuto, Maria Cristina Moruzzi, Alessia Di Legge, Gilda Fuoco, Rosa Autorino, Angela Collarino, Benedetta Gui, Gian Franco Zannoni, Antonietta Gambacorta, Maura Miccò, Vittoria Rufini, Giovanni Scambia, Gabriella Ferrandina
OBJECTIVE: To determine the diagnostic performance of two-dimensional ultrasound parameters, three-dimensional power Doppler and intravenous contrast enhanced indices in detecting residual disease in locally advanced cervical cancer patients triaged to neoadjuvant treatment followed by radical surgery. METHODS: Between October 2010 and June 2014, 108 women with histologically documented cervical cancer and FIGO stage IB2-IVA were screened and 88 of them were included in the final analysis...
November 8, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29117295/hand-rejuvenation-by-targeted-volume-restoration-of-the-dorsal-fat-compartments
#8
Jia Zhou, Yun Xie, Wen-Jin Wang, Tanja Herrler, Ru-Lin Hang, Pei-Juan Zhao, Si-Zheng Zhou, Qing-Feng Li
Background: Recent anatomic findings suggest aging-related changes of the complex fat distribution in the hand. Objectives: To rejuvenate the aging hand, we developed a targeted fat grafting technique based on the physiologic fat distribution of the hand. Methods: The dorsum of both hands was examined in 30 healthy volunteers of different age utilizing B-mode ultrasound to determine physiological changes of the aging hand. Additional anatomic dissection was performed in 10 hands of five fresh cadavers to establish the anatomic basis for the targeted restoration technique...
May 30, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29113887/injectable-silk-fibroin-hydrogels-functionalized-with-microspheres-as-adult-stem-cells-carrier-systems
#9
Matteo Ciocci, Ilaria Cacciotti, Dror Seliktar, Sonia Melino
Hydrogels are good candidate materials for cell delivery scaffolds because they can mimic the physical, chemical, electrical and biological properties of most of the native tissues. In this study, composite biosynthetic hydrogels were produced by combining the bio-functionality of silk fibroin (SF) with the structural versatility of polyethylene-glycol-diacrylated (PEGDa). The formation of a photopolymerizable PEGDa-SF hydrogel (PSFHy) was optimized for 3D-cell culture. Functionalization of the 3D-PSFHy with protein microspheres (MS) was required to increase the porosity and cell-adhesive properties of the material...
November 4, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29112643/assessment-of-fetal-congenital-heart-diseases-by-4-dimensional-ultrasound-using-spatiotemporal-image-correlation-pictorial-review
#10
Edward Araujo Júnior, Gabriele Tonni, Nathalie Jeanne Bravo-Valenzuela, Fabricio Da Silva Costa, Simon Meagher
The aim of this pictorial review is to describe the technical advances achieved through the application of 4-dimensional (4D) ultrasound using spatiotemporal image correlation (STIC) over conventional 2-dimensional ultrasound in the prenatal detection of congenital heart disease (CHD). Spatiotemporal image correlation is a volume imaging technique that simplifies fetal heart studies while providing more diagnostic information than is typically available from traditional 2-dimensional studies. Four-dimensional software allows the study of cardiac anatomy and function during a single cardiac cycle and has greatly contributed to diagnostic enhancement of CHD...
November 6, 2017: Ultrasound Quarterly
https://www.readbyqxmd.com/read/29109773/quantitative-three-dimensional-dynamic-contrast-enhanced-ultrasound-imaging-first-in-human-pilot-study-in-patients-with-liver-metastases
#11
Ahmed El Kaffas, Rosa Maria Silveira Sigrist, George Fisher, Sunitha Bachawal, Joy Liau, Huaijun Wang, Alexander Karanany, Isabelle Durot, Jarrett Rosenberg, Dimitre Hristov, Jürgen K Willmann
Purpose: To perform a clinical assessment of quantitative three-dimensional (3D) dynamic contrast-enhanced ultrasound (DCE-US) feasibility and repeatability in patients with liver metastasis, and to evaluate the extent of quantitative perfusion parameter sampling errors in 2D compared to 3D DCE-US imaging. Materials and Methods: Twenty consecutive 3D DCE-US scans of liver metastases were performed in 11 patients (45% women; mean age, 54.5 years; range, 48-60 years; 55% men; mean age, 57.6 years; range, 47-68 years)...
2017: Theranostics
https://www.readbyqxmd.com/read/29108354/ultrasound-guided-percutaneous-microwave-ablation-assisted-by-three-dimensional-visualization-operative-treatment-planning-system-and-percutaneous-transhepatic-cholangial-drainage-with-intraductal-chilled-saline-perfusion-for-larger-hepatic-hilum-hepatocellular
#12
Xin Li, Jie Yu, Ping Liang, Xiaoling Yu, Zhigang Cheng, Zhiyu Han, Shaobo Duan, Jiasheng Zheng
To assess the clinical efficiency of ultrasound-guided percutaneous microwave ablation (US-PMWA) assisted by three-dimensional (3D) visualization operative treatment planning system and percutaneous transhepatic cholangial drainage with intraductal chilled saline perfusion (PTCD-ICSP) for larger hepatic hilum hepatocellular carcinoma (HH-HCC) (D ≥ 3 cm). The combination therapy was performed in 14 patients from Sep 2011 to May 2017. The major outcomes for assessment were biliary duct complications, local tumor recurrence, distant recurrence and overall survival rates...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29103476/evaluation-of-fetal-kidney-growth-using-ultrasound-a-systematic-review
#13
REVIEW
Sonja Brennan, David Watson, Donna Rudd, Michal Schneider, Yogavijayan Kandasamy
PURPOSE: To determine the role of ultrasound imaging in evaluating fetal kidney growth. METHODS: MEDLINE, CINAHL and EMBASE databases were electronically searched for studies between 1996 and January 2017 and limited to English language. Studies were included if they reported on an ultrasound technique to assess fetal kidney growth and they were not a case report or case series. There was independent selection of studies by two reviewers in consensus with one other reviewer...
November 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/29090027/evaluation-of-multidetector-computed-tomography-in-haematuria
#14
Ranjan Kumar, Raj Kumar Airon, Amit Mittal, Rikki Singal, Kamal Sharma, Samita Singal
AIMS AND OBJECTIVES: (1) To study the role of multidetector computed tomography in patients with haematuria. (2) To correlate multidetector computed tomography findings with clinical outcome/laboratory findings/FNAC and/or operative findings (wherever performed). MATERIAL AND METHODS: The present study was carried out in the Department of Radiodiagnosis, M.M. Institute of Medical Sciences and Research, Mullana, Ambala, from April 2014 to 2016. Fifty patients with complaint of haematuria, referred from various wards and outpatient departments of this institution, were included...
June 2017: Mædica
https://www.readbyqxmd.com/read/29084410/significance-of-mri-transrectal-ultrasound-fusion-three-dimensional-model-guided-targeted-biopsy-based-on-transrectal-ultrasound-guided-systematic-biopsy-in-prostate-cancer-detection-a-systematic-review-and-meta-analysis
#15
Yongquan Tang, Zhihong Liu, Liangyou Tang, Ruochen Zhang, Yiping Lu, Jiayu Liang, Zijun Zou, Chuan Zhou, Yujie Wang
PURPOSE: To assess MRI/Transrectal Ultrasound (TRUS) fusion three-dimensional model-guided targeted biopsy (3D-Tb) versus TRUS-guided systematic biopsy (Sb) in detecting overall and high-Gleason-score (≥7) prostate cancer (PCa). METHODS: Pubmed and Web of science were searched. Studies with men having a suspicious lesion on MRI were included, which were divided into initial biopsy, previous negative biopsy, and mixed groups in meta-analysis. RESULTS: Totally 13 cohorts in 12 studies, with 3,225 men were included...
October 30, 2017: Urologia Internationalis
https://www.readbyqxmd.com/read/29080259/counting-ovarian-antral-follicles-by-ultrasound-a-practical-guide
#16
Marcela A Coelho Neto, Artur Ludwin, Antoni Borrell, Beryl Benacerraf, Didier Dewailly, Fabricio da Silva Costa, George Condous, Juan L Alcazar, Ligita Jokubkiene, Stefano Guerriero, Thierry Van den Bosch, Wellington P Martins
OBJECTIVE: To summarize the main aspects of several available techniques to perform ovarian antral follicle count (AFC), to propose a standardized report and to draw perspectives for future research on this subject. METHODS: This is a consensus paper from a group of clinicians and sonologists. The initial manuscript was written by three authors and then submitted to all the other authors asking for comments/corrections. After three versions incorporating suggestions, the fourth version of the manuscript was approved by all the authors...
October 28, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29075046/a-novel-approach-to-prenatal-measurement-of-the-fetal-frontal-lobe-using-three-dimensional-sonography
#17
Steffen A Brown, Rebecca Hall, Lauren Hund, Hilda L Gutierrez, Timothy Hurley, Bradley D Holbrook, Ludmila N Bakhireva
OBJECTIVE: While prenatal 3D ultrasonography results in improved diagnostic accuracy, no data are available on biometric assessment of the fetal frontal lobe. This study was designed to assess feasibility of a standardized approach to biometric measurement of the fetal frontal lobe and to construct frontal lobe growth trajectories throughout gestation. STUDY DESIGN: A sonographic 3D volume set was obtained and measured in 101 patients between 16.1 and 33.7 gestational weeks...
March 2017: Journal of Reproductive Medicine
https://www.readbyqxmd.com/read/29066339/long-term-invasive-follow-up-of-bioresorbable-vascular-scaffold-optical-coherence-tomography-assessment-of-jailed-side-branches
#18
Valeria Paradies, Pieter C Smits, Georgios J Vachojannis, Kees-Jan Royaards, Jochem Wassing, Martin van der Ent
BACKGROUND: Little is known about the long term development of the tissue bridges covering the struts of bioresorbable vascular scaffold (BVS) at the side branches (SB) ostium. This study aims at assessing the resorption process of jailed SB after BVS implantation. METHODS: We performed both Optical Coherence Tomography (OCT) and Intravascular Ultrasound (IVUS) analysis of 7 patients enrolled in the ABSORB Cohort B trial at our center. Orifice SB area and mean thickness of tissue bridge covering SB were calculated from 2D assessment...
September 10, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29065346/sector-scanning-3d-ultrasound-imaging-in-frequency-domain-with-1d-array-transducer
#19
Zhihui Han, Hu Peng, Xiaoyan Zhao, Xun Chen, Putian Lu
Sector-scanning is a conventional scanning mode in ultrasound imaging, which can increase the area to observe. In three-dimensional (3D) ultrasound, freehand imaging system is usually used. This method uses a moving elevation focused one-dimensional (1D) transducer to construct a series of B-mode slice images, and then these B-mode slice images are combined to form a 3D volume image. When sector-scanning is used to acquire the B-mode slices, the elevation resolution is poor because of the elevation resolution of the probe and the interpolations between the slices...
October 12, 2017: Ultrasonics
https://www.readbyqxmd.com/read/29064570/effects-of-scaffold-microstructure-and-low-intensity-pulsed-ultrasound-on-chondrogenic-differentiation-of-human-mesenchymal-stem-cells
#20
Mitra Aliabouzar, Se-Jun Lee, Xuan Zhou, Grace Lijjie Zhang, Kausik Sarkar
The effects of low intensity pulsed ultrasound (LIPUS) on proliferation and chondrogenic differentiation of human mesenchymal stem cells (hMSCs) seeded on 3D printed poly-(ethylene glycol)-diacrylate (PEG-DA) scaffolds with varying pore geometries (square and hexagonal channels) were investigated. The scaffold with square pores resulted in higher hMSC growth and chondrogenic differentiation than a solid or a hexagonally porous scaffold. The optimal LIPUS parameters at 1.5 MHz were found to be 100 mW/cm(2) and 20% duty cycle...
October 24, 2017: Biotechnology and Bioengineering
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