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https://www.readbyqxmd.com/read/28533803/use-of-ultrasound-in-image-guided-high-dose-rate-brachytherapy-enumerations-and-arguments
#1
REVIEW
Susovan Banerjee, Tejinder Kataria, Deepak Gupta, Shikha Goyal, Shyam Singh Bisht, Trinanjan Basu, Ashu Abhishek
Inherently, brachytherapy is the most conformal radiotherapeutic technique. As an aid to brachytherapy, ultrasonography (USG) serves as a portable, inexpensive, and simple to use method allowing for accurate, reproducible, and adaptive treatments. Some newer brachytherapy planning systems have incorporated USG as the sole imaging modality. Ultrasonography has been successfully used to place applicator and dose planning for prostate, cervix, and anal canal cancers. It can guide placement of brachytherapy catheters for all other sites like breast, skin, and head and neck cancers...
April 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/28528800/an-innovative-method-of-planning-and-displaying-flap-volume-in-diep-flap-breast-reconstructions
#2
S Hummelink, Arico C Verhulst, Thomas J J Maal, Yvonne L Hoogeveen, Leo J Schultze Kool, Dietmar J O Ulrich
BACKGROUND: Determining the ideal volume of the harvested flap to achieve symmetry in deep inferior epigastric artery perforator (DIEP) flap breast reconstructions is complex. With preoperative imaging techniques such as 3D stereophotogrammetry and computed tomography angiography (CTA) available nowadays, we can combine information to preoperatively plan the optimal flap volume to be harvested. In this proof-of-concept, we investigated whether projection of a virtual flap planning onto the patient's abdomen using a projection method could result in harvesting the correct flap volume...
April 23, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28526455/comparison-of-3d-and-2d-shear-wave-elastography-for-differentiating-benign-and-malignant-breast-masses-focus-on-the-diagnostic-performance
#3
H Y Choi, Y-M Sohn, M Seo
AIM: To evaluate the diagnostic performance of three-dimensional (3D) image shear-wave elastography (SWE) for differentiating benign from malignant breast masses compared to two-dimensional (2D) SWE and B-mode ultrasound (US). MATERIALS AND METHODS: This study consisted of 205 breast lesions from 199 patients who underwent B-mode US and SWE before biopsy from January 2014 to March 2016. Quantitative elasticity values (maximum and mean elasticity, Emax and Emean) obtained from 2D and 3D SWE (axial, sagittal, and coronal images) were reviewed retrospectively, in addition to the histopathological findings including immunohistochemistry profiles (luminal A, luminal B, human epidermal growth factor receptor 2 (HER2)-enriched, and triple-negative breast cancer) in cases of malignancy...
May 16, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28516727/non-invasive-longitudinal-monitoring-of-angiogenesis-in-a-murine-full-thickness-cutaneous-wound-healing-model-using-high-resolution-three-dimensional-ultrasound-imaging
#4
K Mukai, W Zhu, Y Nakajima, M Kobayashi, T Nakatani
BACKGROUND/PURPOSE: The aim of this study was to evaluate the longitudinal monitoring of angiogenesis in a murine full-thickness cutaneous wound healing model using high-resolution three-dimensional (3D) ultrasound imaging. METHODS: Two C57BL/6 mice were used. Two-dimensional (2D) ultrasound images with the Color Doppler mode were acquired at regular spatial intervals on day 9, 11, and 14 after wounding. 3D ultrasound images were processed by reconstructing the 2D ultrasound image sequences...
May 17, 2017: Skin Research and Technology
https://www.readbyqxmd.com/read/28515369/effect-of-reverse-vessel-remodeling-on-regression-of-coronary-atherosclerosis-in-patients-treated-with-aggressive-lipid-and-blood-pressure-lowering-therapy%C3%A3-insight-from-million-study
#5
Tadatsugu Gamou, Kenji Sakata, Hayato Tada, Tetsuo Konno, Kenshi Hayashi, Hidekazu Ino, Masakazu Yamagishi, Masa-Aki Kawashiri
BACKGROUND: The MILLION study, a prospective randomized multicenter study, revealed that lipid and blood pressure (BP)-lowering therapy resulted in regression of coronary plaque as determined by intravascular ultrasound (IVUS). In the present study we performed additional analysis to investigate the associated factors with regression of coronary plaque.Methods and Results:We investigated serial 3D IVUS images from 68 patients in the MILLION study. Standard IVUS parameters were assessed at both baseline and follow-up (18-24 months)...
May 17, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28514490/brain-ultrasound-rehearsal-before-surgery-a-pilot-cadaver-study
#6
Carlo Giussani, Matteo Riva, Valentin Djonov, Simone Beretta, Francesco Prada, Erik Sganzerla
Introduction It has been shown that brain ultrasonography (US) is an efficient tool for improving three-dimensional (3D) spatial orientation during neurosurgical interventions. However, it necessitates specific training as it is highly operator-dependent. To date, neurosurgeons have relied solely on intraoperative practice to improve their mastery of brain US; this has obvious limitations. Herein, we consider whether a study of brain US on human cadavers could enable a training platform for neurosurgeons and residents to be developed...
May 17, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28509324/three-dimensional-neurosonography-a-novel-field-in-fetal-medicine
#7
Michał Lipa, Ritsuko Kimata Pooh, Mirosław Wielgoś
Neurosonography is a promising technique for prenatal diagnosis, combining features of ultrasound imaging with fetal neurology. The brain is a three-dimensional structure, therefore observing brain structure in the three basic planes (sagittal, coronal and axial) is mandatory. The anterior fontanelle and sagittal suture may serve as acoustic ultrasound windows in the transvaginal brain scan, allowing to obtain high-resolution neuroimages of the intracranial structures. Furthermore, three-dimensional (3D) ultrasound combined with the transvaginal brain approach provides detailed and sophisticated neuroimages...
2017: Ginekologia Polska
https://www.readbyqxmd.com/read/28508399/hdliveflow-with-spatiotemporal-image-correlation-for-the-diagnosis-of-congenital-heart-disease
#8
Megumi Ito, Mohamed Ahmed Mostafa AboEllail, Kenta Yamamoto, Kenji Kanenishi, Hirokazu Tanaka, Hiroshi Masaoka, Toshiyuki Hata
With the latest advancement of three-dimensional (3D)/four-dimensional (4D) ultrasound machines, HDliveFlow will facilitate more precise evaluations of the fetal and placental circulations [1-5] and gynecologic disorders [6-10]. HDliveFlow silhouette mode is the latest technology to demonstrate vitreous-like clarity of the blood flow. This technique has the ability to preserve and delineate the outline and borders of the blood flow, while showing its core as transparent.
May 16, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28505246/effects-of-long-term-exogenous-testosterone-administration-on-ovarian-morphology-determined-by-transvaginal-3d-ultrasound-in-female-to-male-transsexuals
#9
Mirte R Caanen, Nienke E Schouten, Esther A M Kuijper, Joukje van Rijswijk, Marleen H van den Berg, Eline van Dulmen-den Broeder, Annelies Overbeek, Flora E van Leeuwen, Mick van Trotsenburg, Cornelis B Lambalk
STUDY QUESTION: Does long-term exogenous testosterone administration result in polycystic ovarian morphology (PCOM), determined by (3D) transvaginal ultrasound (TVU) in female-to-male transsexuals (FtMs). SUMMARY ANSWER: Long-term exogenous testosterone administration in FtMs does not result in PCOM determined by (3D) TVU. WHAT IS KNOWN ALREADY: The role of androgens in the pathophysiology of polycystic ovary syndrome (PCOS) is still unclear...
May 13, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28504955/three-dimensional-intravascular-reconstruction-techniques-based-on-intravascular-ultrasound-a-technical-review
#10
Chaoyang Shi, Xiongbiao Luo, Jin Guo, Zoran Najdovski, Toshio Fukuda, Hongliang Ren
Intravascular ultrasound (IVUS) imaging provides two-dimensional (2D) real-time luminal and transmural cross-sectional images of intravascular vessels with detailed pathological information. It has offered significant advantages in terms of diagnosis and guidance and has been increasingly introduced from coronary interventions into more generalized endovascular surgery. However, IVUS itself does not provide spatial pose information for its generated images, making it difficult to construct a 3D intravascular visualization...
May 12, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28504935/efficient-three-dimensional-model-based-reconstruction-scheme-for-arbitrary-optoacoustic-acquisition-geometries
#11
Lu Ding, X Luis Dean Ben, Daniel Razansky
Optimal optoacoustic tomographic sampling is often hindered by the frequency-dependent directivity of ultrasound sensors, which can only be accounted for with an accurate three-dimensional (3D) model. Herein, we introduce a 3D modelbased reconstruction method applicable to optoacoustic imaging systems employing detection elements with arbitrary size and shape. The computational complexity and memory requirements are mitigated by introducing an efficient graphics processing unit (GPU)-based implementation of the iterative inversion...
May 12, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28502474/-role-of-prostate-mri-trus-fusion-biopsies-and-new-markers-in-the-diagnostic-strategy-of-prostate-cancer
#12
Raphaële Renard-Penna, Pierre Mozer, Luca Lunelli, Olivier Cussenot
Multiparametric MRI prostate (mp-MRI) is a powerful tool to locate lesions>0.5cm(3) (below this threshold tumor volume, prostate cancers are classified as "insignificant"). The detection rate of the mp-MRI for significant cancers of small volume (0.5-1cm(3)) with a Gleason score≥7 is>85 %. The prostate mp-MRI optimizes the management of cancers classified as low risk of progression by providing aggressive criteria for misclassified lesions, which require an active treatment and enhance the clinicopathological criteria of indolence for subclinical lesions, which can justify of surveillance...
May 11, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28500487/high-frame-rate-vector-flow-imaging-of-the-carotid-bifurcation
#13
REVIEW
Alfredo Goddi, Chandra Bortolotto, Ilaria Fiorina, Maria Vittoria Raciti, Marianna Fanizza, Elena Turpini, Giulia Boffelli, Fabrizio Calliada
Carotid artery atherosclerotic disease is still a significant cause of cerebrovascular morbidity and mortality. A new angle-independent technique, measuring and visualizing blood flow velocities in all directions, called vector flow imaging (VFI) is becoming available from several vendors. VFI can provide more intuitive and quantitative imaging of vortex formation, which is not clearly distinguishable in the color Doppler image. VFI, as quantitative method assessing disturbed flow patterns of the carotid bifurcation, has the potential to allow better understanding of the diagnostic value of complex flow and to enhance risk stratification...
May 12, 2017: Insights Into Imaging
https://www.readbyqxmd.com/read/28499993/robust-2d-3d-registration-optimization-for-motion-compensation-during-3d-trus-guided-biopsy-using-learned-prostate-motion-data
#14
Tharindu De Silva, Derek Cool, Jing Yuan, Cesare Romagnoli, Jagath Samarabandu, Aaron Fenster, Aaron Ward
In magnetic resonance (MR)-targeted, 3D transrectal ultrasound (TRUS)-guided biopsy, prostate motion during the procedure increases the needle targeting error and limits the ability to accurately sample MR-suspicious tumour volumes. The robustness of 2D-3D registration methods for prostate motion compensation is impacted by local optima in the search space. In this paper, we analysed prostate motion characteristics and investigated methods to incorporate such knowledge into the registration optimization framework to improve robustness against local optima...
May 10, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28497449/percutaneous-us-guided-renal-cryoablation-using-3d-modeling
#15
Leonid M Rapoport, Shmuel Cytron, Mikhail E Enikeev, Dmitry G Tsarichenko, Dmitry V Enikeev, Denis V Chinenov
INTRODUCTION: The article describes the first experience of performing percutaneous ultrasound (US)-guided cryoablation of renal tumor and assesses the safety and short-term results of treatment. MATERIALS AND METHODS: Twelve patients were subjected to US-guided cryoablation of renal tumor in 2015. The tumor size in 11 patients was up to 3.0 cm (T1а); in one female patient, 4.5 cm (T1b). Tumors were assessed according to the PADUA score. In eight patients, it was 6-7 (low); in three patients, 8-9 (average); in one, 10 (high)...
May 10, 2017: Urologia
https://www.readbyqxmd.com/read/28493822/diagnosis-of-fetal-syndromes-by-three-and-four-dimensional-ultrasound-is-there-any-improvement
#16
REVIEW
Lara Spalldi Barišić, Milan Stanojević, Asim Kurjak, Selma Porović, Ghalia Gaber
With all of our present knowledge, high technology diagnostic equipment, electronic databases and other available supporting resources, detection of fetal syndromes is still a challenge for healthcare providers in prenatal as well as in the postnatal period. Prenatal diagnosis of fetal syndromes is not straightforward, and it is a difficult puzzle that needs to be assembled and solved. Detection of one anomaly should always raise a suspicion of the existence of more anomalies, and can be a trigger to investigate further and raise awareness of possible syndromes...
May 11, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28493295/towards-ultrasound-guided-adaptive-radiotherapy-for-cervical-cancer-evaluation-of-elekta-s-semi-automated-uterine-segmentation-method-on-3d-ultrasound-images
#17
Sarah A Mason, Tuathan P O'Shea, Ingrid M White, Susan Lalondrelle, Kate Downey, Mariwan Baker, Claus F Behrens, Jeffrey C Bamber, Emma J Harris
PURPOSE: 3D ultrasound (US) images of the uterus may be used to adapt radiotherapy (RT) for cervical cancer patients based on changes in daily anatomy. This requires accurate on-line segmentation of the uterus. The aim of this work was to assess the accuracy of Elekta's "Assisted Gyne Segmentation" (AGS) algorithm in semi-automatically segmenting the uterus on 3D transabdominal ultrasound images by comparison with manual contours. MATERIALS & METHODS: Nine patients receiving RT for cervical cancer were imaged with the 3D Clarity(®) transabdominal probe at RT planning, and 1 to 7 times during treatment...
May 10, 2017: Medical Physics
https://www.readbyqxmd.com/read/28493084/combined-intracoronary-2d-3d-optical-coherence-tomography-and-intravascular-ultrasound-imaging-in-left-main-severe-stent-malapposition
#18
Enrico Cerrato, Corina Biagioni, Pilar Jimenez-Quevedo, Ivan J Nuñez-Gil, Nieves Gonzalo, Javier Escaned
No abstract text is available yet for this article.
May 10, 2017: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/28489561/3d-power-doppler-in-the-evaluation-of-abnormally-invasive-placenta
#19
REVIEW
Giuseppe Calì, Francesca Foti, Gabriella Minneci
The anomalies in placental insertion and invasion, such as placenta previa and the various forms of abnormally invasive placenta, are today a rising obstetric pathology. Two-dimensional (2D) ultrasonography is the gold standard in the diagnosis of abnormally invasive placenta (AIP), but the important feto-maternal impact of this pathology suggests the opportunity to employ all the available diagnostic techniques, such as three-dimensional (3D) power Doppler. This technique allows acquiring multiplanar images on coronal, axial and sagittal planes and with a rotational technique, it permits visualizing the placenta-bladder interface more accurately...
May 10, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28478703/a-bioreactor-to-identify-the-driving-mechanical-stimuli-of-tissue-growth-and-remodeling
#20
Mathieu A J van Kelle, Pim J A Oomen, Jurgen A Bulsink, Marloes W J T Janssen-van den Broek, Richard G P Lopata, Marcel Rutten, Sandra Loerakker, Carlijn Bouten
Tissue growth and remodeling are essential processes that should ensure long-term functionality of tissue engineered (TE) constructs. Even though it is widely recognized that these processes strongly depend on mechanical stimuli, the underlying mechanisms of mechanically-induced growth and remodeling are only partially understood. It is generally accepted that cells sense mechanical changes and respond by altering their surroundings, by means of extracellular matrix (ECM) growth and remodeling, in an attempt to return to a certain preferred mechanical homeostatic state...
May 6, 2017: Tissue Engineering. Part C, Methods
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