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Doppler sonography

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https://www.readbyqxmd.com/read/28088127/cerebral-laterality-for-language-is-related-to-adult-salivary-testosterone-levels-but-not-digit-ratio-2d-4d-in-men-a-functional-transcranial-doppler-ultrasound-study
#1
Marietta Papadatou-Pastou, Maryanne Martin
The adequacy of three competing theories of hormonal effects on cerebral laterality are compared using functional transcranial Doppler sonography (fTCD). Thirty-three adult males participated in the study (21 left-handers). Cerebral lateralization was measured by fTCD using an extensively validated word generation task. Adult salivary testosterone (T) and cortisol (C) concentrations were measured by luminescence immunoassay and prenatal T exposure was indirectly estimated by the somatic marker of 2nd to 4th digit length ratio (2D:4D)...
January 11, 2017: Brain and Language
https://www.readbyqxmd.com/read/28078879/zenker-diverticulum-in-the-right-side-of-the-neck-resembling-a-thyroid-mass-at-ultrasound
#2
S Alessandrini, I Samperi, F De Cristofaro, E D'Armiento, D Diacinti, A Pernazza, D Bosco, V Ascoli, S Ulisse
Zenker’s diverticulum represents the most common form of pharyngo-oesophageal diverticula usually occurring on the left side of the neck. Due to its anatomical proximity to the thyroid, it can mimic a thyroid mass. Here we describe the case of an asymptomatic 49-year-old man referred to the Thyroid Clinic of the Policlinico Umberto I Hospital-“Sapienza” University of Rome for thyroid sonography due to a family history of autoimmune thyroid disease. The patient’s thyroid blood tests did not reveal any abnormalities...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28063264/preimplantation-3d-ultrasound-current-uses-and-challenges
#3
Sushila Arya, Sanja Kupesic Plavsic
The preimplantation ultrasound (US) refers to targeted imaging of the uterus and adnexa prior to assisted reproductive techniques (ART) to optimize the infertility treatment outcomes. After a thorough evidence based literature review, we propose the use of transvaginal three-dimensional (3D) US during the early follicular phase. A systematic approach for 3D US examination consists of a detailed examination of the uterine shape, size and contour, evaluation of the endometrial thickness, volume, pattern and vascularity, and assessment of the junctional zone regularity, echogenicity and thickness...
January 7, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28054194/ultrasound-based-scores-as-predictors-for-nodular-hyperplasia-in-patients-with-secondary-hyperparathyroidism-a-prospective-validation-study
#4
Jill Gwiasda, Alexander Kaltenborn, Jörg A Müller, Michaela Serttas, Georg W F Scheumann, Harald Schrem, Mark D Jäger
PURPOSE: Former studies evaluated echostructural and vascular patterns in ultrasound of the parathyroid gland to identify nodular hyperplasia in patients with secondary hyperparathyroidism due to chronic kidney disease. This prospective study aims to externally validate suggested ultrasound classifications. METHODS: Parathyroid glands of 27 patients with secondary hyperparathyroidism undergoing parathyroidectomy were prospectively analyzed. Ultrasound including Doppler imaging was performed 1 day prior to surgery...
January 4, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28032907/multiparametric-sonography-of-hematologic-malignancies-of-the-testis-grayscale-color-doppler-and-contrast-enhanced-ultrasound-and-strain-elastographic-appearances-with-histologic-correlation
#5
Carolina Kachramanoglou, Vasileios Rafailidis, Marianna Philippidou, Michele Bertolotto, Dean Y Huang, Annamaria Deganello, Maria E Sellars, Paul S Sidhu
Primary testicular lymphoma is rare and appears with nonspecific findings on grayscale and color Doppler sonography. We present 8 patients further examined with contrast-enhanced sonography, strain elastography, and histologic analysis after orchiectomy. Seven of 8 patients had a diagnosis of large B-cell lymphoma, and 1 of 8 had a diagnosis of granulocytic sarcoma, with solitary lesions (2 of 8), multiple lesions (3 of 8), or entire testicular involvement (3 of 8). Lesions appeared hypoechoic (7 of 8) or isoechoic (1 of 8), all with increased vascularity on color Doppler sonography and a nonbranching linear pattern of intratumoral vessels (7 of 8)...
December 29, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28027619/is-there-any-difference-between-seminomas-and-nonseminomatous-germ-cell-tumors-on-shear-wave-elastography-a-preliminary-study
#6
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/28026735/-quantitative-analysis-of-power-doppler-images-in-lateral-humeral-enthesopathy
#7
P Walder, L Paša, L Pavliska
PURPOSE OF THE STUDY The evaluation of efficiency of power Doppler sonography in the diagnosis of lateral humeral enthesopathy, role of correct assessment of Doppler sonographic images with the method of quantitative analysis, assessment of statistical differences between a group of patients with lateral humeral enthesopathy and a control group of healthy subjects and assessment of the diagnostic power of this test. In addition, consideration of the relevance of each area of the lateral compartment for assessment and diagnosis making in lateral humeral enthesopathy...
2016: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28025360/patterns-of-cerebral-blood-flow-modulation-during-painful-stimulation-in-fibromyalgia-a-transcranial-doppler-sonography-study
#8
Casandra I Montoro, Stefan Duschek, Cristina Muñóz Ladrón de Guevara, Gustavo A Reyes Del Paso
OBJECTIVE: This study analyzed the temporal dynamics of cerebral blood flow (CBF) modulations, during painful stimulation in fibromyalgia syndrome (FMS), using functional transcranial Doppler sonography. METHOD: Blood flow velocities were recorded bilaterally in the anterior (ACA) and middle (MCA) cerebral arteries of 24 FMS patients and 20 healthy individuals during exposure to painful pressure stimulation. Participants were presented with two stimulation blocks: a) fixed pressure (2...
December 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/27974939/prenatal-ultrasound-diagnosis-and-pregnancy-outcome-of-umbilical-cord-knot-debate-regarding-ethical-aspects-of-a-series-of-cases
#9
Bohîlțea Re, Turcan N, Cîrstoiu M
True umbilical cord knot appears to be a relatively common complication that occurs in 0.3%-1.3% of all pregnancies and it is correlated with an increased incidence of SGA infants, premature birth, need for neonatal intensive care and fetal death. The aim of the article was to evaluate the incidence of the true umbilical cord knot in the University Emergency Hospital, Bucharest, for a period of 5 years and its association with premature birth, low birth weight, low Apgar score at 1 minute and the need for neonatal intensive care...
July 2016: Journal of Medicine and Life
https://www.readbyqxmd.com/read/27966109/renal-ultrasound-and-doppler-sonography-in-hypertension-an-update
#10
Maria Boddi
Ultrasound (US) allows the non-invasive evaluation of morphological changes of kidney structure (by means of B-Mode) and patterns of renal and extrarenal vascularization (by means of color-Doppler and contrast-enhanced US). In hypertensive subjects it offers a relevant contribution to the diagnosis of early renal damage, acute or chronic nephropathies and nephrovascular disease. However, morphological changes are often detected late and non-specific and in recent years evidence has increased regarding the clinical relevance of renal resistive index (RRI) for the study of vascular and renal parenchymal renal abnormalities...
December 14, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27964906/results-of-multiparametric-transrectal-ultrasound-based-focal-high-dose-rate-dose-escalation-combined-with-supplementary-external-beam-irradiation-in-intermediate-and-high-risk-localized-prostate-cancer-patients
#11
György Kovács, Klaudia Müller, Tamer Soror, Corinna Melchert, Xiyuan Guo, Dieter Jocham, Axel Merseburger
PURPOSE: Clinical results of a biologic information-based focused dose escalation combined with dose de-escalation for the whole organ in external beam radiotherapy + high-dose-rate brachytherapy (HDR-BT) boost application for localized prostate cancer in a consecutively treated patient cohort. METHODS AND MATERIALS: One hundred thirty patients were treated with external beam radiotherapy (50 Gy) complementary to two multiparametric transrectal ultrasound-guided 15 Gy HDR-BT fractions...
December 7, 2016: Brachytherapy
https://www.readbyqxmd.com/read/27943373/most-thyroid-cancers-detected-by-sonography-lack-intranodular-vascularity-on-color-doppler-imaging-review-of-the-literature-and-sonographic-pathologic-correlations-for-698-thyroid-neoplasms
#12
Grace C H Yang, Karen O Fried
OBJECTIVES: This study investigated the controversy of whether hypervascularity on color Doppler sonography correlates with thyroid malignancy by reviewing the literature and sonographic-pathologic correlation. METHODS: Over a 20-year period, 698 thyroid nodules had color Doppler and histopathologic data. Intranodular vascularity was graded 0 to 3+, and histopathologic findings were recorded. RESULTS: The data were collected from 698 patients (557 women and 141 men) with a mean age of 48 years (range, 16-87 years)...
December 1, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27942470/basal-ganglia-perfusion-using-dynamic-color-doppler-sonography-in-infants-with-hypoxic-ischemic-encephalopathy-receiving-therapeutic-hypothermia-a-pilot-study
#13
Ricardo Faingold, Guilherme Cassia, Linda Morneault, Christine Saint-Martin, Guilherme Sant'Anna
BACKGROUND: The objective of this study was to evaluate the cerebral perfusion of the basal ganglia in infants with hypoxic-ischemic encephalopathy (HIE) receiving hypothermia using dynamic color Doppler sonography (CDS) and investigate for any correlation between these measurements and survival. METHODS: Head ultrasound (HUS) was performed with a 9S4 MHz sector transducer in HIE infants submitted to hypothermia as part of their routine care. Measurements of cerebral perfusion intensity (CPI) with an 11LW4 MHz linear array transducer were performed to obtain static images and DICOM color Doppler videos of the blood flow in the basal ganglia area...
October 2016: Quantitative Imaging in Medicine and Surgery
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
#14
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
#15
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
#16
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...
January 2017: 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
#17
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...
January 2017: 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
#18
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...
January 2017: 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
#19
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
#20
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)...
January 2017: Animal Reproduction Science
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