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https://www.readbyqxmd.com/read/28549340/a-critical-assessment-of-the-in-vitro-measurement-of-cortical-bone-stiffness-with-ultrasound
#1
L Peralta, X Cai, P Laugier, Q Grimal
Elasticity assessment based on bulk wave velocity (BWV) measurements is the most popular technique to characterize the anisotropic stiffness tensor in cortical bone. Typically, a cuboid bone specimen is cut with its sides along the different anatomical directions. Then, the velocity of shear and longitudinal waves propagating along different directions are assessed, from which stiffness coefficients are calculated. Despite the importance of obtaining accurate elasticity values for bone research, there is no generally accepted protocol to measure BWV and the precision of the technique has been seldom investigated...
May 19, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28549057/both-antenatal-and-postnatal-inflammation-contribute-information-about-the-risk-of-brain-damage-in-extremely-preterm-newborns
#2
Diana Yanni, Steven Korzeniewski, Elizabeth N Allred, Raina N Fichorova, T Michael O'Shea, Karl Kuban, Olaf Dammann, Alan Leviton
BACKGROUNDPreterm newborns exposed to intrauterine inflammation are at increased risk of neurodevelopmental disorders. We hypothesized that adverse outcomes are more strongly associated with a combination of antenatal and postnatal inflammation than with either of them alone.METHODSWe defined antenatal inflammation as histologic inflammation in the placenta. We measured the concentrations of seven inflammation-related proteins in blood obtained on postnatal days 1, 7, and 14 from 763 infants born before 28 weeks of gestation...
May 26, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28549050/use-of-noncontact-low-frequency-ultrasound-in-deep-tissue-pressure-injury-a-retrospective-analysis
#3
Pamela Wagner-Cox, Heather M Duhame, Christina R Jamison, Robin R Jackson, Suzy T Fehr
PURPOSE: The purpose of this study was to examine the effect of noncontact low-frequency ultrasound (NLFU) on deep tissue pressure injury (DTPI), both hospital-acquired and those present on admission (POA). DESIGN: Retrospective, descriptive study. SAMPLE AND SETTING: Medical records from 44 adult patients with a DTPI treated with NLFU were reviewed; 22 had a hospital-acquired DTPI (HADTPI) and 22 had DTPI POA. Their mean age was 71.3 ± 16...
May 25, 2017: Journal of Wound, Ostomy, and Continence Nursing
https://www.readbyqxmd.com/read/28549010/a-clinical-feasibility-trial-for-identification-of-exceptional-responders-in-whom-breast-cancer-surgery-can-be-eliminated-following-neoadjuvant-systemic-therapy
#4
Henry M Kuerer, Gaiane M Rauch, Savitri Krishnamurthy, Beatriz E Adrada, Abigail S Caudle, Sarah M DeSnyder, Dalliah M Black, Lumarie Santiago, Brian P Hobbs, Anthony Lucci, Michael Gilcrease, Rosa F Hwang, Rosalind P Candelaria, Mariana Chavez-MacGregor, Benjamin D Smith, Elsa Arribas, Tanya Moseley, Mediget Teshome, Makesha V Miggins, Vicente Valero, Kelly K Hunt, Wei T Yang
OBJECTIVE: To determine the accuracy of fine-needle aspiration (FNA) and vacuum-assisted core biopsy (VACB) in assessing the presence of residual cancer in the breast after neoadjuvant systemic therapy (NST). SUMMARY BACKGROUND DATA: Pathologic complete response (pCR) rates after NST have improved dramatically, suggesting that surgery might be avoided in some patients. Safe avoidance of surgery would require accurate confirmation of no residual invasive/in situ carcinoma...
May 25, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28549004/efficiency-of-b-mode-ultrasound-and-strain-elastography-in-differentiating-between-benign-and-malignant-cervical-lymph-nodes
#5
Eser Tugut, Cetin Celenk, Asli Tanrivermis Sayit, Tümay Bekci, Hediye Pinar Gunbey, Kerim Arslan
PURPOSE: The purpose of this study was to evaluate the diagnostic accuracy and efficiency of ultrasonography (US), especially when combined with strain elastography (SE), in differentiating between benign and malignant cervical lymph nodes (LNs). METHODS: Forty-one LNs were examined by B-mode US, power Doppler US, and SE. The following imaging features were analyzed: shape, echogenicity, echogenic hilum, calcification, intranodal vascular pattern, elasticity scores (5 categories), and strain ratio...
May 25, 2017: Ultrasound Quarterly
https://www.readbyqxmd.com/read/28549003/noninvasive-thermometry-in-high-intensity-focused-ultrasound-ablation
#6
Yufeng Zhou
High-intensity focused ultrasound (HIFU) is emerging as an effective and promising treatment modality for the formation of coagulative necrosis inside the cancer/tumor noninvasively. To guarantee the efficacy and efficiency of HIFU ablation, the temperature field and consequent thermal dose should be monitored accurately in a high temporal and spatial resolution in real time. However, because of the significant variations of the tissue properties and deep penetration of HIFU beam, especially in the abdominal application, noninvasive thermometry is a very challenging topic, which may hamper the wide acceptance of HIFU by physicians worldwide...
May 25, 2017: Ultrasound Quarterly
https://www.readbyqxmd.com/read/28548709/-polka-dot-macrophages-on-cytology-of-bilateral-adrenal-masses-nailing-disseminated-histoplasmosis
#7
Sumit Grover, Pavneet Kaur Selhi, Neena Sood, Ridhi Sood, Harpreet Kaur
Histoplasma capsulatum is a saprophytic fungus that in immunocompetent individuals causes self-limited pulmonary infection; however, in immunosuppressed patients involvement of the reticuloendothelial system, alimentary tract, urinary tract, and central nervous system is fairly common. Rarely patients present with bilateral adrenal masses which mimic tuberculosis and metastasis on radiology because of associated central necrosis. Ultrasound guided FNAC aided by special stains like Periodic Acid Schiff (PAS) and Gomori Methenamine Silver (GMS) may help in early diagnosis in such dubious cases...
May 26, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28548472/begraft-peripheral-pmcf-study-12-month-results
#8
Koen Deloose, Marc Bosiers, Joren Callaert, Patrick Peeters, Jurgen Verbist, Wouter van den Eynde, Lieven Maene, Roel Beelen, Koen Keirse
BACKGROUND: The Begraft Peripheral PMCF study is a prospective, non-randomized study, conducted at the vascular departments of 4 hospitals in Belgium. This manuscript reports the findings up to 12-month follow-up time for the total cohort. The primary endpoint of the study is primary patency at 12 months. Primary patency is defined as a target lesion without a hemodynamically significant stenosis on duplex ultrasound (>50%, systolic velocity ratio no greater than 2.4) and without Target Lesion Revascularization (TLR) within 12 months...
May 26, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28548231/combination-therapy-with-telmisartan-and-parecoxib-induces-regression-of-endometriotic-lesions
#9
Anca Nenicu, Yuan Gu, Christina Körbel, Michael D Menger, Matthias W Laschke
BACKGROUND AND PURPOSE: Telmisartan suppresses the development of endometriotic lesions. However, the drug also up-regulates the expression of cyclooxygenase (COX)-2, which has been suggested to promote the progression of endometriosis. Accordingly, we herein analysed whether a combination therapy with telmisartan and a COX-2 inhibitor may be more effective in the treatment of endometriotic lesions than application of telmisartan alone. EXPERIMENTAL APPROACH: Endometriotic lesions were induced in the peritoneal cavity of C57BL/6 mice, which were daily treated with an intraperitoneal (i...
May 26, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28548220/bedside-ultrasound-in-acute-appendicitis-in-the-emergency-department-methodological-and-statistical-issues-on-diagnostic-value
#10
Fatemeh Koohi, Siamak Sabour
We were interested to read the recent paper by Gungor F and colleagues published in May issue of the Acad Emerg Med 2017.(1) The aim of the authors was to evaluate diagnostic value of point-of-care US (POCUS) in clinical decision making of emergency physicians (EPs) for acute appendicitis (AA) in the emergency department (ED).(1) A total of 264 patients were included into a prospective observational clinical study and based on their results 169 (64%) had a diagnosis of AA. This article is protected by copyright...
May 26, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28547928/application-of-endobronchial-ultrasonography-in-laparoscopic-liver-segmentectomy-in-an-animal-model
#11
Tomoyuki Abe, Tsuyoshi Kobayashi, Seiichi Shimizu, Michinori Hamaoka, Hiroshi Iwako, Masakazu Hashimoto, Yoshihiro Mikuriya, Shintaro Kuroda, Hirotaka Tashiro, Hideki Ohdan
INTRODUCTION: This study investigated whether laparoscopic ultrasound-guided segment staining and real-time ultrasound-guided hepatectomy, with endobronchial ultrasonography equipped with a guide sheath, would be useful for laparoscopic liver segmentectomy in a porcine model. MATERIAL AND SURGICAL TECHNIQUE: The abdominal cavity (in two pigs) was reached via a 12-mm umbilical trocar. An artificial tumor was created by radiofrequency ablation within the intended resection area...
May 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/28547868/improving-three-dimensional-mechanical-imaging-of-breast-lesions-with-principal-component-analysis
#12
Mohit Tyagi, Yuqi Wang, Timothy Hall, Paul E Barbone, Assad A Oberai
PURPOSE: Elastography has emerged as a new tool for detecting and diagnosing many types of diseases including breast cancer. To date, most clinical applications of elastography have utilized two-dimensional strain images. The goal of this paper is to present a new quasi-static elastography technique that yields shear modulus images in three dimensions METHODS: An automated breast volume scanner was used to acquire ultrasound images of the breast as it was gently compressed. Cross-correlation between successive images was used to determine the displacement within the tissue...
May 26, 2017: Medical Physics
https://www.readbyqxmd.com/read/28547770/sonographic-appearance-of-subungual-squamous-cell-carcinoma-in-the-hand
#13
Monica Quintana-Codina, Lídia Creus-Vila, Ana Iglesias-Plaza, Maribel Iglesias-Sancho, Gemma Melé-Ninot, Anna Isabel Lázaro-Simó, Montse Salleras-Redonnet
Subungual squamous cell carcinoma is very rare, but it is the most frequent primary malignant tumor of the nail bed. Therefore, its diagnosis and treatment are crucial to ensure a favorable prognosis. We present the sonographic findings in a case of a subungual squamous cell carcinoma. © 2017 Wiley Periodicals, Inc. J Clin Ultrasound, 2017.
May 26, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28547764/visibility-of-focal-liver-lesions-comparison-between-kupffer-phase-of-ceus-with-sonazoid-and-hepatobiliary-phase-of-gadoxetic-acid-enhanced-mri
#14
Woo Young Yang, Hee Sun Park, Young Jun Kim, Mi Hye Yu, Sung Il Jung, Hae Jeong Jeon
BACKGROUND: To investigate the agreement between Kupffer phase of Sonazoid contrast-enhanced sonography (CEUS) and hepatobiliary phase of gadoxetic acid-enhanced MRI in the evaluation of focal liver lesions (FLLs). METHODS: One hundred fifty-four FLLs in 154 patients who underwent both Sonazoid CEUS and gadoxetic acid-enhanced liver MRI were included in this retrospective study. FLL visibility on the Kupffer-phase images was graded as one (invisible or isoenhancing), two (vaguely visible or vaguely hypoenhancing), or three (clearly visible or clearly hypoenhancing), and that on the hepatobiliary-phase images of MRI was graded as one (invisible or hyper/isointense), two (vaguely visible or weakly hypointense), or three (clearly visible or strongly hypointense)...
May 26, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28547739/determination-of-spermatic-vein-reflux-after-varicocele-repair-helps-to-define-the-efficacy-of-treatment-in-improving-sperm-parameters-of-subfertile-men
#15
S D'Andrea, A Micillo, A Barbonetti, A V Giordano, S Carducci, A Mancini, S Necozione, F Francavilla, S Francavilla
PURPOSE: A continuous spermatic venous reflux (SVR) at colour Doppler ultrasound (CDU) is an evidence for varicocele, a frequent correlate for male subfertility. We explored whether SVR after left varicocele repair is predictive for changes in semen quality in subfertile men. METHODS: Blood hormones (FSH, LH, and total testosterone) and scrotal CDU were obtained in subfertile patients with left grade II or grade III varicocele on physical evaluation and a poor sperm quality...
May 25, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28547317/pelvic-pain-in-the-middle-of-the-night-use-of-mri-for-evaluation-of-pediatric-female-pathology-in-the-emergent-setting
#16
Rama S Ayyala, Asef Khwaja, Sudha A Anupindi
Acute pelvic pain in pediatric female patients is a common cause of emergency room visits. Imaging plays a crucial role in the clinical evaluation of these patients. Pelvic pain in female children can result from various pathologies. Ultrasound is the preferred first line imaging study; however, magnetic resonance imaging (MRI) is a helpful adjunct after hours, as it is available 24/7 in many institutions. Advantages of MRI include superior delineation of anatomy and higher tissue contrast resolution, particularly of the small pelvic structures...
May 25, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28547208/pulse-wave-velocity-and-augmentation-index-are-not-independently-associated-with-carotid-atherosclerosis-in-patients-with-rheumatoid-arthritis
#17
M Robustillo-Villarino, J J Alegre-Sancho, E Rodilla-Sala, A Corrales, J Llorca, M A Gonzalez-Gay, P H Dessein
Arterial stiffness can enhance cardiovascular risk by increasing atherogenesis or adverse hemodynamic effects. We examined whether the arterial stiffness markers of aortic pulse wave velocity (PWV) and the augmentation index (AIx) are independently associated with carotid artery intima-media thickness (IMT) and plaque in patients with rheumatoid arthritis (RA). PWV and AIx were determined by brachial oscillometry using the Mobil-O-Graph® system and carotid IMT and plaque by ultrasound in 194 consecutive RA patients without established cardiovascular disease, chronic kidney disease, and diabetes at disease onset...
May 25, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28547137/age-dependent-arthrosonographic-reference-values-of-the-hip-joint-in-healthy-children-and-adolescents-a-cross-sectional-multicenter-ultrasound-study
#18
Ralf Felix Trauzeddel, Hartwig Lehmann, Daniel Windschall, Gerd Ganser, Rainer Berendes, Maria Haller, Manuela Krumrey-Langkammerer, Katharina Palm-Beden, Antje Nimtz-Talaska, Christine Nirschl, Phillip Schoof, Ralf Trauzeddel
BACKGROUND: Musculoskeletal US is a noninvasive imaging method for diagnosing and monitoring inflammatory rheumatic diseases. OBJECTIVES: To develop age- and gender-related arthrosonographic reference intervals for the hip joint of healthy children and adolescents. MATERIALS AND METHODS: In a cross-sectional US study, we examined both hip joints of 445 children and adolescents with an age range of 1 year to 18 years. We measured the distance between the bone surface and the outer margin of the joint capsule to define the bone-capsule distance, the joint capsule and cartilage thickness, and the capsule layer thickness...
May 25, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28547135/sedentary-behaviour-and-bone-health-in-children-adolescents-and-young-adults-a-systematic-review
#19
REVIEW
J B Koedijk, J van Rijswijk, W A Oranje, J P van den Bergh, S P Bours, H H Savelberg, N C Schaper
Sedentary behaviour (SB) is increasing in Western societies and some studies suggest a deleterious effect of SB on bone. The aim of this systematic review was to examine the association between SB and bone health in children, adolescents and young adults. Electronic databases (PubMed, MEDLINE, PsycINFO and Science Citation Index) were searched for relevant articles up to January 9, 2017. Studies were included when results on bone health (e.g. strength, mass and structure) and either subjectively (questionnaires) or objectively (accelerometry) measured SB were reported in healthy participants ≤24 years...
May 26, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28546661/management-of-reproductive-tract-anomalies
#20
Garima Kachhawa, Alka Kriplani
Reproductive tract malformations are rare in general population but are commonly encountered in women with infertility and recurrent pregnancy loss. Obstructive anomalies present around menarche causing extreme pain and adversely affecting the life of the young women. The clinical signs, symptoms and reproductive problems depend on the anatomic distortions, which may range from congenital absence of the vagina to complex defects in the lateral and vertical fusion of the Müllerian duct system. Identification of symptoms and timely diagnosis are an important key to the management of these defects...
June 2017: Journal of Obstetrics and Gynaecology of India
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