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Doppler sonography

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https://www.readbyqxmd.com/read/27931184/postprocedural-radial-artery-occlusion-rate-using-a-sheathless-guiding-catheter-for-left-ventricular-endomyocardial-biopsy-performed-by-transradial-approach
#1
Behrouz Kherad, Clemens Köhncke, Frank Spillmann, Heiner Post, Michel Noutsias, Burkert Pieske, Florian Krackhardt, Carsten Tschöpe
BACKGROUND: For coronary interventions the arterial access via the radial artery is associated with fewer vascular access site complications, and has been shown to reduce major bleeding when compared to the femoral approach. But the endomyocardial biopsy (EMB) approach is usually done by a transfemoral or cervical access known to be associated with an increased risk of artery puncture and its potential complications (i.e., false aneurysm, artery-venous fistula) and needs post-procedural immobilization...
December 8, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27925701/effect-of-precompression-on-the-power-doppler-assessment-of-breast-lesion-vascularity
#2
Robert DeVita, Richard G Barr
OBJECTIVES: To evaluate the effect of precompression on power Doppler visualization of blood flow in breast masses. METHODS: This Institutional Review Board-approved and Health Insurance Portability and Accountability Act-compliant study evaluated 30 patients with breast masses (16 benign and 14 malignant) undergoing ultrasound-guided breast biopsy. A computational mathematics program was used to calculate the number of color pixels in a region of interest at various degrees of compression of the breast by the transducer...
November 30, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27925648/sonographic-evaluation-of-intrathyroid-metastases
#3
J Matthew Debnam, Michael Kwon, Bruno D Fornage, Savitri Krishnamurthy, Gary L Clayman, Beth S Edeiken-Monroe
OBJECTIVES: Intrathyroid metastases from extrathyroid primary tumors are rare. Clinical findings may be subtle, but detection of intrathyroid metastases has improved with sonography. The objective of this study was to evaluate the sonographic appearance of intrathyroid metastases. METHODS: Patients with thyroid masses with cytopathologic features matching those of an extrathyroid primary tumor were retrospectively identified. The appearances of intrathyroid metastases on sonography were reviewed for the following features: size, margin regularity, echogenicity, echotexture, vascularity on power or color Doppler ultrasonography, and the presence or absence of any associated cervical adenopathy...
December 7, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27925647/left-ventricular-function-assessed-by-one-point-carotid-wave-intensity-in-newly-diagnosed-untreated-hypertensive-patients
#4
Olga Vriz, Serena Favretto, Joanna Jaroch, Rychard Wojciech, Eduardo Bossone, Caterina Driussi, Francesco Antonini-Canterin, Paolo Palatini, Krystyna Loboz-Grudzien
OBJECTIVES: To investigate whether newly diagnosed untreated hypertensive patients show higher left ventricular (LV) contractility, as assessed by traditional echocardiographic indices and carotid wave intensity (WI) parameters, including amplitude of the peak during early (W1 ) and late systole (W2 ). METHODS: A total of 145 untreated hypertensive patients were compared with 145 age- and sex-matched normotensive subjects. They underwent comprehensive echocardiography and WI analysis...
November 28, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27925644/evaluation-of-renal-parenchyma-elasticity-with-acoustic-radiation-force-impulse-quantification-in-nutcracker-syndrome-and-comparisons-with-grayscale-doppler-sonography-and-laboratory-findings
#5
Tumay Bekci, Meltem Ceyhan Bilgici, Gurkan Genc, Demet Tekcan, Ahmet Veysel Polat, Leman Tomak
OBJECTIVES: We sought to evaluate renal parenchymal elasticity with Virtual Touch quantification of acoustic radiation force impulse imaging in nutcracker syndrome and to compare shear-wave velocity (SWV) values with grayscale Doppler sonography and laboratory findings. METHODS: Thirty-eight healthy volunteers and forty-three nutcracker syndrome patients were enrolled in this prospective study. SWV values for both kidneys in nutcracker syndrome patients and healthy volunteers were evaluated...
November 30, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27920128/forward-and-backward-pressure-waveform-morphology-in-hypertension
#6
Ye Li, Haotian Gu, Henry Fok, Jordi Alastruey, Philip Chowienczyk
We tested the hypothesis that increased pulse wave reflection and altered backward waveform morphology contribute to increased pulse pressure in subjects with higher pulse pressure compared with lower pulse pressure and to actions of vasoactive drugs to increase pulse pressure. We examined the relationship of backward to forward wave morphology in 158 subjects who were evaluated for hypertension (including some normotensive subjects) divided into 3 groups by central pulse pressure: group 1, 33±6.5 mm Hg; group 2, 45±4...
December 5, 2016: Hypertension
https://www.readbyqxmd.com/read/27914630/uterine-blood-flow-in-sheep-and-goats-during-the-peri-parturient-period-assessed-by-transrectal-doppler-sonography
#7
Mohammed Elmetwally, Heinrich Bollwein
The aim of the present study was to evaluate uterine blood flow (UBF) during the postpartum period in small ruminants. The study involved measures of UBF in 5 ewes and 5 goats during the first 4 weeks after parturition. Transrectal quantification of UBF was assessed by determining the diameter (DM), time averaged mean velocity (TAMEAN), blood flow volume (BFV), blood flow acceleration (ACCE) and pulsatility index (PI) in the uterine arteries ipsilateral to the previously gravid uterine horn(s) at Wk 20 of gestation and every 3days from the day of parturition (D 0) until Day 27 postpartum (D 27)...
November 25, 2016: Animal Reproduction Science
https://www.readbyqxmd.com/read/27914183/interphalangeal-joint-sonography-of-symptomatic-hand-osteoarthritis-clinical-and-functional-correlation
#8
Natalia de Oliva Spolidoro Paschoal, Jamil Natour, Flavia S Machado, Hilda Alcântara Veiga de Oliveira, Rita Nely Vilar Furtado
OBJECTIVES: To assess the correlation between inflammatory sonographic findings (grayscale synovial hypertrophy and power Doppler) and clinical and functional assessments in hand osteoarthritis (symptomatic interphalangeal joints) and to correlate the intraobserver and interobserver reliability of these findings. METHODS: A prospective double-blind study of 60 interphalangeal joints was conducted. The joints were assessed 6 times per year by clinician and sonographer observers...
December 3, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27914180/burned-out-testis-tumors-in-asymptomatic-infertile-men-multiparametric-sonography-and-mri-findings
#9
Laurence Rocher, Ludivine Glas, Marie France Bellin, Sophie Ferlicot, Vincent Izard, Gerard Benoit, Laurence Albiges, Karim Fizazi, Jean-Michel Correas
Multiparametric testicular ultrasound and magnetic resonance imaging (MRI) findings were analyzed in a series of 10 infertile asymptomatic men presenting with pathologically confirmed burned-out testicular tumors. Color/power Doppler ultrasound (CDUS), shear wave elastography (SWE), contrast-enhanced ultrasonography (CEUS), and MRI were performed on 10, 5, 6, and 7 patients, respectively. All lesions appeared as a hypoechoic and hypovascular nodular area at CDUS, SWE, CEUS CDUS, and CEUS (if performed). Shear wave elastography showed a stiffer nodular area compared with the surrounding/contralateral tissues (13 versus 2 kPa); MRI revealed a well-delineated nodular area in hypointense signal on T2, a high apparent diffusion coefficient value, and a lack of enhancement...
December 3, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27914173/color-doppler-sonography-of-extradigital-glomus-tumors
#10
Orlando Catalano, Fernando Alfageme Roldän, Francesco Maria Solivetti, Maria Scotto di Santolo, Marcio Bouer, Ximena Wortsman
We retrospectively collected cases of surgically proven extradigital glomus tumor (EDGT) and reviewed their demographic, clinical, and sonography features. A total of 18 single, subcutaneous EDGTs were gathered. All but one were located in the extremities. EDGTs typically appear as a small, hypoechoic, homogeneous, or slightly inhomogeneous, well-delimited nodule, disposed horizontally and painful under probe pressure. Intranodular vascularization is always present. Feeding artery and efferent vein are typical but inconstant findings...
December 3, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27878108/can-ultrasound-findings-be-a-good-predictor-of-sperm-parameters-in-patients-with-varicocele-a-cross-sectional-study
#11
Ali Mahdavi, Reza Heidari, Mehrdad Khezri, Abolfazl Shiravi, Reyhaneh Pirjani, Reyhaneh Saheb Kashaf
BACKGROUND: Varicocele, one of the most common causes of sperm abnormalities in men, is the dilation of the testicular vein (the pampiniform venous plexus) by more than 2 mm. Ultrasonography is the primary imaging procedure for varicocele diagnosis. The venous diameter is evaluated using B-mode sonography, and venous reflux is assessed using color Doppler sonography. OBJECTIVES: In this study, we investigated the association of ultrasound findings with sperm parameters in patients with varicocele...
September 2016: Nephro-urology Monthly
https://www.readbyqxmd.com/read/27876070/ovarian-thecoma-fibroma-groups-clinical-and-sonographic-features-with-pathological-comparison
#12
Hui Chen, Yan Liu, Li-Fei Shen, Mei-Jiao Jiang, Zhi-Fang Yang, Guo-Ping Fang
BACKGROUND: Ovarian thecoma-fibroma groups (OTFG) are uncommon sex cord-stromal neoplasms. The objective of the study was to demonstrate clinical and sonographic features of OTFG and compare with surgical histopathology. METHODS: A total of 61 patients with surgically proven OTFG were enrolled in this retrospective study to demonstrate its clinical and sonographic features and to compare with pathological findings. Gray scale and color Doppler sonography were performed presurgically with either transabdominal or transvaginal approach to image pelvic structures and lesions...
November 22, 2016: Journal of Ovarian Research
https://www.readbyqxmd.com/read/27874219/sonographic-appearance-of-pyomyositis-of-the-sternocleidomastoid-muscle-a-case-report
#13
Hiroshi Sakaida, Yasunori Matsuda, Kazuhiko Takeuchi
Pyomyositis in the neck has rarely been described. We present the sonographic findings in a case of pyomyositis of the sternocleidomastoid muscle. A 62-year-old man with poorly controlled diabetes presented with an induration of the neck and fever. On gray-scale sonography, a part of the sternocleidomastoid muscle appeared swollen and contained irregularly shaped hypoechoic areas. Power Doppler imaging showed increased vascularity in the muscle. Sonographic-guided aspiration confirmed abscesses in the sternocleidomastoid muscle...
November 22, 2016: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/27872421/risk-of-adverse-outcomes-in-euploid-pregnancies-with-isolated-short-fetal-femur-and-humerus-on-second-trimester-sonography
#14
Marja Kaijomaa, Veli-Matti Ulander, Markku Ryynanen, Vedran Stefanovic
OBJECTIVES: The purpose of this study was to evaluate pregnancies with isolated short fetal femur and humerus on second-trimester sonography. Short fetal long bones are known to be associated with aneuploidy and structural anomalies. In this study, we wanted to show the risk of adverse pregnancy outcomes in euploid and nonanomalous pregnancies. METHODS: Singleton pregnancies with short femur and humerus were included. Pregnancies with normal fetal bone lengths and age-matched mothers were selected as controls...
December 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27872414/effect-of-low-dose-aspirin-on-midluteal-phase-uterine-artery-blood-flow-in-patients-with-recurrent-pregnancy-loss
#15
Xiaomin Kang, Tongfei Wang, Liyin He, Haijing Xu, Zhilan Liu, Aimin Zhao
OBJECTIVES: The purpose of this study was to evaluate differences in uterine artery blood flow parameters and pregnancy outcomes, if any. An investigation was conducted to determine the effects of low-dose aspirin on uterine artery blood flow indices in patients with recurrent pregnancy loss. METHODS: This observational study included 353 Chinese women with a history of recurrent pregnancy loss and 85 women without a history of recurrent pregnancy loss (control group) from Ren Ji Hospital...
December 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27872413/is-there-any-difference-between-seminomas-and-nonseminomatous-germ-cell-tumors-on-shear-wave-elastography-a-preliminary-study
#16
Atilla Suleyman Dikici, Mehmet Emin Er, Deniz Alis, Cesur Samanci, Fethi Emre Ustabasioglu, Cetin Demirdag, Haydar Durak, Fatih Kantarci, Ismail Mihmanli
OBJECTIVES: The purpose of this study was to evaluate the ability of shear wave elastography (SWE) to differentiate seminomas from nonseminomatous germ cell tumors. METHODS: Approval for this retrospective study was obtained from the local Ethics Committee of Istanbul University Cerrahpasa Medical School. Fifteen patients with malignant testicular lesions were examined by grayscale sonography, color or power Doppler sonography, and SWE between February 2011 and October 2015...
December 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27867432/arthritis-of-the-knee-joint-in-rheumatoid-arthritis-evaluation-of-treatment-response-by-ultrasound-in-daily-clinical-practice
#17
V S Schäfer, W A Schmidt, M Backhaus, W Hartung
BACKGROUND: Rheumatoid arthritis (RA) commonly involves the knee joint in up to 30% of patients. Musculoskeletal ultrasound enables the skilled clinician to easily assess disease activity. OBJECTIVE: To evaluate the sensitivity to change of the sonography score of large joints in Rheumatology (SOLAR) for different treatments of knee arthritis in RA. METHOD: Joints were assessed by ultrasound at 4 visits. Laboratory, immunological and clinical parameters were recorded...
2016: Open Rheumatology Journal
https://www.readbyqxmd.com/read/27857051/elevation-of-the-acth-cortisol-ratio-in-female-opioid-dependent-patients-a-biomarker-of-aging-and-correlate-of-metabolic-and-immune-activation
#18
(no author information available yet)
BACKGROUND: Whilst the hypothalamic-pituitary-adrenal (HPA) Axis is a major stress axis, and is necessarily perturbed in opioid dependency, and stress is a major contributor to aging mechanisms, the HPA axis has not been studied in opioid dependency in an age-dependent manner. OBJECTIVE: Hypothesis - Differences in age dependent levels of HPA components. DESIGN: Cross-sectional comparison of general medical and opioid dependent patients (ODP, GMP)...
September 18, 2016: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/27837189/middle-cerebral-artery-diameter-changes-during-rhythmic-handgrip-exercise-in-humans
#19
J Verbree, Agt Bronzwaer, M A van Buchem, Mjap Daemen, J J van Lieshout, Mjp van Osch
Transcranial Doppler (TCD) sonography is a frequently employed technique for quantifying cerebral blood flow by assuming a constant arterial diameter. Given that exercise increases arterial pressure by sympathetic activation, we hypothesized that exercise might induce a change in the diameter of large cerebral arteries. Middle cerebral artery (MCA) cross-sectional area was assessed in response to handgrip exercise by direct magnetic resonance imaging (MRI) observations. Twenty healthy subjects (11 female) performed three 5 min bouts of rhythmic handgrip exercise at 60% maximum voluntary contraction, alternated with 5 min of rest...
November 11, 2016: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/27821655/renal-interlobar-vein-impedance-index-as-a-first-trimester-marker-does-not-predict-hypertensive-disorders-of-pregnancy
#20
Sammya Bezerra Maia E Holanda Moura, Paulo Cesar Praciano, Julio Augusto Gurgel Alves, Wellington P Martins, Edward Araujo Júnior, Stefan C Kane, Fabrício da Silva Costa
OBJECTIVES: The purpose of this study was to examine whether the maternal renal interlobar vein impedance index as assessed by first-trimester sonography is able to predict the later development of hypertensive disorders of pregnancy. METHODS: Venous Doppler parameters of both maternal kidneys were studied in 214 pregnant women at gestational ages of 11 weeks to 13 weeks 6 days. Patients were classified according to outcomes related to hypertensive disorders. Detection rates and areas under receiver operating characteristic curves were determined for the maternal renal interlobar vein impedance index as a first-trimester predictor of preeclampsia and gestational hypertension...
December 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
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