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Doppler ultrasound

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https://www.readbyqxmd.com/read/28821962/influence-of-aerobic-fitness-on-vasoreactivity-in-young-men
#1
Preston L Bell, Edward T Kelley, Stephanie M McCoy, Daniel P Credeur
Previous work has demonstrated a direct relationship between aerobic fitness and vasodilatory function (i.e., flow-mediated dilation; FMD); however, the relation between aerobic fitness and vasoconstrictor responsiveness (i.e., low flow-mediated constriction; L-FMC), and the overall vasoactive range (FMD + L-FMC) is unclear. PURPOSE: To test the hypothesis that L-FMC and the overall vasoactive range (FMD + L-FMC) will be related to aerobic fitness in young, healthy men. METHODS: Twenty men (age: 23 ± 5 years) were recruited, and divided evenly into a higher (HF) vs...
August 18, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28819497/-volvulus-of-the-small-intestine-caused-by-mesenteric-lipoma
#2
Papa Alassane Mbaye, Aime Lakh Faye, Aloise Sagna, Ndeye Aby Ndoye, Ndeye Fatou Seck, Oumar Ndour, Gabriel Ngom
We report the case of a 7-year old girl presenting with sub-occlusive syndrome associated with acute paroxysmal abdominal pain at the level of the upper abdomen, vomiting and no evacuation of faeces. Physical examination showed discomfort with palpation of the upper abdomen. Abdominal ultrasound showed poorly limited intraperitoneal tissue formation without vascular features on doppler, exercising a mass effect on the neighborhood structures; mesenteric vessels were in their normal position. This mass on CT scan scorresponded to a well limited lipomatous formation exercising a mass effect on the caecum associated with volvulus of the small intestine...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28819303/automated-segmentation-of-light-sheet-fluorescent-imaging-to-characterize-experimental-doxorubicin-induced-cardiac-injury-and-repair
#3
René R Sevag Packard, Kyung In Baek, Tyler Beebe, Nelson Jen, Yichen Ding, Feng Shi, Peng Fei, Bong Jin Kang, Po-Heng Chen, Jonathan Gau, Michael Chen, Jonathan Y Tang, Yu-Huan Shih, Yonghe Ding, Debiao Li, Xiaolei Xu, Tzung K Hsiai
This study sought to develop an automated segmentation approach based on histogram analysis of raw axial images acquired by light-sheet fluorescent imaging (LSFI) to establish rapid reconstruction of the 3-D zebrafish cardiac architecture in response to doxorubicin-induced injury and repair. Input images underwent a 4-step automated image segmentation process consisting of stationary noise removal, histogram equalization, adaptive thresholding, and image fusion followed by 3-D reconstruction. We applied this method to 3-month old zebrafish injected intraperitoneally with doxorubicin followed by LSFI at 3, 30, and 60 days post-injection...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818772/multipath-ultrasonic-gas-flow-meter-based-on-multiple-reference-waves
#4
Hongliang Zhou, Tao Ji, Ruichen Wang, Xiaocheng Ge, Xiaoyu Tang, Shizhen Tang
Several technologies can be used in ultrasonic gas flow-meters, such as transit-time, Doppler, cross-correlation and etc. In applications, the approach based on measuring transit-time has demonstrated its advantages and become more popular. Among those techniques which can be applied to determine time-of-flight (TOF) of ultrasonic waves, including threshold detection, cross correlation algorithm and other digital signal processing algorithms, cross correlation algorithm has more advantages when the received ultrasonic signal is severely disturbed by the noise...
July 18, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28818258/imaging-of-high-risk-carotid-plaques-ultrasound
#5
Rafael S Cires-Drouet, Mahvash Mozafarian, Amir Ali, Siddhartha Sikdar, Brajesh K Lal
Duplex ultrasonography has a well-established role in the assessment of the degree of stenosis caused by carotid atherosclerosis. This assessment is derived from Doppler velocity changes induced by the narrowing lumen of the artery. New research into the mechanisms for plaque rupture and atheroembolic stroke indicates that the degree of narrowing is an imperfect predictor of stroke risk, and that other factors, such as plaque composition and remodeling and biomechanical forces acting on the plaque, can play a role...
March 2017: Seminars in Vascular Surgery
https://www.readbyqxmd.com/read/28817509/high-intensity-exercise-enhances-conduit-artery-vascular-function-in-older-adults
#6
Erika Iwamoto, Josh M Bock, Darren P Casey
PURPOSE: Modulation of vascular function follows an exercise intensity-dependent pattern in young adults. This study aimed to investigate the potential intensity-dependent effects of an acute bout of exercise on conduit and resistance artery function in healthy older adults. METHODS: Eleven healthy older adults (5 males/6 females, 66±1 years) completed 30 minutes of recumbent cycling at 50-55% (low-intensity) and 75-80% (high-intensity) of their age-predicted maximal heart rate on two separate study visits...
August 16, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28817492/should-renal-color-doppler-ultrasonography-be-a-routine-test-in-newly-diagnosed-hypertensive-patient
#7
Costas Tsioufis, Ioannis Andrikou, Menno Pruijm, Belén Ponte, Pantelis Sarafidis, Andreas Koureas, Dimitrios Tousoulis, Enrico Agabiti-Rosei, Giuseppe Mancia, Michel Burnier
: European Society of Hypertension/European Society of Cardiology guidelines recommend calculation of estimated glomerular filtration rate and evaluation of urinary albumin excretion rate as routine tests in the initial evaluation and during the follow-up of all hypertensive patients. However, from a clinical point of view, renal ultrasound - a noninvasive, readily available and cheap imaging modality - could contribute to the better evaluation of a hypertensive patient by identifying common causes of secondary hypertension (HTN) originating from the kidney and more recently by detecting renal injury in severe or long-standing essential HTN by measuring renal resistive indexes...
August 16, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28817412/effect-of-physical-methods-of-lymphatic-drainage-on-postexercise-recovery-of-mixed-martial-arts-athletes
#8
Aleksandra Zebrowska, Robert Trybulski, Robert Roczniok, Wieslaw Marcol
OBJECTIVE: Physical methods are reported to be important for accelerating skeletal muscle regeneration, decreasing muscle soreness, and shortening of the recovery time. The aim of the study was to assess the effect of the physical methods of lymphatic drainage (PMLD) such as manual lymphatic drainage (MLD), the Bodyflow (BF) therapy, and lymphatic drainage by deep oscillation (DO) on postexercise regeneration of the forearm muscles of mixed martial arts (MMA) athletes. DESIGN AND METHODS: Eighty MMA athletes aged 27...
August 16, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28817218/bmi-nephroangiosclerosis-and-glomerulonephritis-is-there-any-meeting-point
#9
Antonietta Gigante, Konstantinos Giannakakis, Francesca Di Mario, Biagio Barbano, Edoardo Rosato, Riccardo Pofi, Marcello Di Paolo, Anna Rachele Rocca, Rosario Cianci
BACKGROUND: Overweight has been related to renal arteriolosclerosis and is able to modify intrarenal hemodynamics. Increasing evidences suggest an association between weight excess and primary glomerulonephritis (GN). The aim of this study was to evaluate the relationship between nutritional status and intrarenal arterial stiffness in primary GN associated to arteriolosclerosis. We have considered the glomerular diameter (GD) as morphological parameter in overweight and obese patients...
August 17, 2017: Nephrology
https://www.readbyqxmd.com/read/28816916/developmental-screening-in-pediatric-sickle-cell-disease-disease-related-risk-and-screening-outcomes-in-4-year-olds
#10
Jeffrey Schatz, Alyssa Schlenz, Laura Reinman, Kelsey Smith, Carla W Roberts
OBJECTIVE: Studies of early child development in sickle cell disease (SCD) have found modest associations between disease-related risks and developmental status in infants and toddlers, but such associations are evident by early elementary school. We screened 4-year-old children with SCD using 2 screening strategies to assess if biomedical risk factors for neurologic disease are related to developmental screening outcomes at this intermediate age. METHODS: Seventy-seven 4-year-old children with SCD (M = 4...
August 4, 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28815106/automated-prediction-of-hepatic-arterial-stenosis
#11
Justin J Baraboo, Deendayal Dinakarpandian, Sherwin S Chan
Several thousand life-saving liver transplants are performed each year. One of the most common causes of early transplant failure is arterial stenosis of the anastomotic junction. Early detection of transplant arterial stenosis can help prevent transplant failure and the need to re-transplant. Doppler ultrasound is the most common screening method, but it suffers from poor specificity. Positive screening cases proceed to angiography which is an invasive and expensive procedure. A more accurate test could decrease the number of normal patients who would have to undergo this invasive diagnostic procedure...
2017: AMIA Summits on Translational Science Proceedings
https://www.readbyqxmd.com/read/28814431/calprotectin-as-a-marker-of-inflammation-in-patients-with-early-rheumatoid-arthritis
#12
Maria Karolina Jonsson, Nina Paulshus Sundlisæter, Hilde Haugedal Nordal, Hilde Berner Hammer, Anna-Birgitte Aga, Inge Christoffer Olsen, Karl Albert Brokstad, Désirée van der Heijde, Tore K Kvien, Bjørg-Tilde Svanes Fevang, Siri Lillegraven, Espen A Haavardsholm
OBJECTIVES: Calprotectin is an inflammatory marker of interest in rheumatoid arthritis (RA). We evaluated whether the level of calprotectin was associated with disease activity, and if it was predictive of treatment response and radiographic progression in patients with early RA. METHODS: Plasma from disease-modifying antirheumatic drug (DMARD)-naïve patients with RA fulfilling 2010 American College of Rheumatology/European League Against Rheumatism classification criteria with symptom duration <2 years was analysed for calprotectin at baseline, and after 1, 3 and 12 months...
August 16, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28810992/two-new-effective-tourniquets-for-potential-use-in-the-military-environment-a-serving-soldier-study
#13
Alastair Beaven, Rob Briard, Mark Ballard, Paul Parker
BACKGROUND: Limb tourniquets have been used extensively during modern Middle Eastern conflicts. Despite its undeniable successes, the combat applied tourniquet (C-A-T) has some shortfalls, principally its inability to reliably control lower limb bleeding when applied to the mid-thigh. We tested two tourniquets which may represent an improvement to the combat applied tourniquet; the tactical mechanical tourniquet and the tactical pneumatic tourniquet. METHODS: We recruited 12 healthy service personnel and applied the tactical mechanical tourniquet and tactical pneumatic tourniquet to both lower limbs in a randomly generated sequence...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810550/2d-sti-combined-with-gated-99-tc-m-mibi-mpi-for-the-diagnosis-of-myocardial-ischemia-in-hypercholesterolemia-patients
#14
Yi Song, Rui-Fang Zhang, Yu Liu
This study aimed to investigate the reliability of ultrasound two-dimensional speckle tracking imaging (2D-STI) for the evaluation of myocardial ischemia in familial hypercholesterolemia (FH) patients. We recruited 28 patients clinically diagnosed with homozygous familial hypercholesterolemia (HoFH) and subjected them to 2D-STI, gated transthoracic Doppler echocardiography (TTDE), and (99)Tc(m)-methoxyisobutylisonitrile myocardial perfusion imaging ((99)Tc(m)-MIBI MPI). The sensitivity, specificity and diagnostic accordance rate of TTDE and 2D-STI for myocardial ischemia in HoFH patients were compared with the (99)Tc(m)-MIBI scores...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28809953/monitoring-health-and-reproductive-status-of-olms-proteus-anguinus-by-ultrasound
#15
Susanne Holtze, Maja Lukač, Ivan Cizelj, Frank Mutschmann, Claudia Anita Szentiks, Dušan Jelić, Robert Hermes, Frank Göritz, Stanton Braude, Thomas Bernd Hildebrandt
The olm (Proteus anguinus) is a troglomorphic, neotenous amphibian with extraordinary life expectancy and unique adaptations that deserve further investigation. A low reproductive rate and habitat decline render it threatened by extinction. Establishing captive populations for maintenance and artificial breeding may one day become crucial to the species. Longitudinal, in-vivo assessment of inner organs is invaluable to our understanding of reproductive physiology, health, and behavior. Using ultrasound, we measured heart rate and assessed health and reproductive status of 13 captive olms at Zagreb Zoo...
2017: PloS One
https://www.readbyqxmd.com/read/28809063/color-and-power-doppler-combined-with-fetal-intelligent-navigation-echocardiography-fine-to-evaluate-the-fetal-heart
#16
L Yeo, R Romero
OBJECTIVE: To evaluate the performance of color and bidirectional power Doppler ultrasound combined with Fetal Intelligent Navigation Echocardiography (FINE) in examining the fetal heart. METHODS: A prospective cohort study was conducted of fetuses in the second and third trimesters with a normal heart or with congenital heart disease (CHD). One or more spatiotemporal image correlation (STIC) volume datasets, combined with color or bidirectional power Doppler (S-flow) imaging, were acquired in the apical four-chamber view...
August 14, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28808198/ultrasonographic-evaluation-of-enthesitis-in-patients-with-ankylosing-spondylitis
#17
Huayong Zhang, Jun Liang, Junlan Qiu, Fan Wang, Lingyun Sun
The aim of this study was to assess sensitivity and responsiveness of power Doppler ultrasound (PDUS) in detecting enthesitis for ankylosing spondylitis (AS) patients compared to clinical examinations. Twenty AS patients initiating etanerceptunderwent clinical and PDUS examinations of six bilateral entheseal sites at baseline and after 1, 2 and 3 months of treatment. Clinical and PDUS examinations identified at least one entheseal lesion in nine (45%) and 19 (95%) patients, respectively. Furthermore, of 240 entheseal sites examined in these 20 patients, PDUS detected 123 entheseal lesions (51...
January 19, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28805018/pain-catastrophizing-is-strongly-associated-with-subjective-outcomes-but-not-with-inflammatory-assessments-in-rheumatoid-arthritis-patients
#18
Hilde B Hammer, Till Uhlig, Tore K Kvien, Jon Lampa
OBJECTIVES: Pain catastrophizing is conceptualized as a negative cognitive-affective response to anticipated or actual pain and has been associated with important pain-related outcomes. The objective of this prospective study of established rheumatoid arthritis (RA) patients was to explore how pain catastrophizing was related to patient-reported outcomes (PROs), composite scores and assessments of inflammatory activity. METHODS: RA patients starting bDMARD were examined at baseline and after 1, 2, 3, 6 and 12 months with PROs (joint pain/patient's global VAS, MHAQ, RAID score), clinical and laboratory assessments (tender/swollen joint count, assessor's global VAS, ESR/CRP), ultrasound (US) (grey scale/power Doppler of 36 joints and 4 tendons) and pain catastrophizing...
August 13, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28803825/cardiovascular-events-after-exposure-to-nilotinib-in-chronic-myeloid-leukemia-long-term-follow-up
#19
Nazanin Aghel, Jeffrey Howard Lipton, Eshetu G Atenafu, Dennis Dong Hwan Kim, Diego Hernan Delgado
INTRODUCTION: Nilotinib is a highly effective tyrosine kinase inhibitor in the treatment of chronic myeloid leukemia (CML). However, reports of cardiovascular toxicities caused by nilotinib have recently raised critical concerns. The aim of the present study was to evaluate the incidence of cardiovascular events (CVEs) and frequency of asymptomatic peripheral arterial disease (PAD) after long-term exposure to nilotinib. PATIENTS AND METHODS: In the present retrospective cohort, we evaluated the incidence of CVEs in 63 CML patients treated with nilotinib...
July 15, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28803687/predictors-of-asymptomatic-radiation-induced-abdominal-atherosclerosis
#20
L Cella, R Liuzzi, P Romanelli, M Conson, V D'Avino, M Ottaviano, V Damiano, G Palmieri, R Pacelli, M Mancini
AIMS: To identify predictors of asymptomatic radiation-induced abdominal atherosclerosis in patients treated with radiotherapy and evaluated by abdominal vascular ultrasonography. MATERIALS AND METHODS: Forty-two testicular classic seminoma patients (median age 34 years, range 16-56) undergoing radical inguinal orchiectomy were analysed. Twenty-six patients underwent post-surgery radiotherapy (median total dose 25 Gy, range 25-43), two of them also received chemotherapy (CHT) and 16 patients were treated with surgery alone or by surgery followed by CHT (control group)...
August 10, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
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