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Doppler sonography

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https://www.readbyqxmd.com/read/28207907/argon-does-not-affect-cerebral-circulation-or-metabolism-in-male-humans
#1
Frank Grüne, Stephan Kazmaier, Sanne Elisabeth Hoeks, Robert Jan Stolker, Marc Coburn, Andreas Weyland
OBJECTIVE: Accumulating data have recently underlined argon´s neuroprotective potential. However, to the best of our knowledge, no data are available on the cerebrovascular effects of argon (Ar) in humans. We hypothesized that argon inhalation does not affect mean blood flow velocity of the middle cerebral artery (Vmca), cerebral flow index (FI), zero flow pressure (ZFP), effective cerebral perfusion pressure (CPPe), resistance area product (RAP) and the arterio-jugular venous content differences of oxygen (AJVDO2), glucose (AJVDG), and lactate (AJVDL) in anesthetized patients...
2017: PloS One
https://www.readbyqxmd.com/read/28193836/post-subdural-hematoma-transient-ischemic-attacks-hypoperfusion-mechanism-supported-by-quantitative-electroencephalography-and-transcranial-doppler-sonography
#2
Ayham M Alkhachroum, Guadalupe Fernandez-Baca Vaca, Sophia Sundararajan, Michael DeGeorgia
No abstract text is available yet for this article.
February 13, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28187816/multimodal-neurologic-monitoring
#3
G Korbakis, P M Vespa
Neurocritical care has two main objectives. Initially, the emphasis is on treatment of patients with acute damage to the central nervous system whether through infection, trauma, or hemorrhagic or ischemic stroke. Thereafter, attention shifts to the identification of secondary processes that may lead to further brain injury, including fever, seizures, and ischemia, among others. Multimodal monitoring is the concept of using various tools and data integration to understand brain physiology and guide therapeutic interventions to prevent secondary brain injury...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28181956/extrapyramidal-symptoms-in-schizophrenia-evidence-of-blunted-cerebral-hemodynamics-during-a-planning-task
#4
Daniel Schuepbach, Matthias Michel, Gert Wagner, Stefan Duschek, Sabine C Herpertz
Acute extrapyramidal symptoms (EPS) occur frequently in schizophrenia, mostly caused by antidopaminergic substances. There have been no published reports on the impact of acute EPS on cerebral blood flow (CBF) or related measures. In the following study, we examined schizophrenic patients with and without EPS during a planning task and measurements of CBF velocity. Sixteen patients with chronic schizophrenia and 16 healthy participants performed a planning paradigm during bilateral functional transcranial Doppler sonography of the middle cerebral arteries...
February 8, 2017: International Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28162948/effects-of-obstructive-carotid-artery-disease-on-ocular-circulation-and-the-safety-of-carotid-artery-stenting
#5
Mehmet Yunus Emiroglu, Mert Evlice, Mustafa Akcakoyun, Murat Velioglu, Mustafa Agca, Yasa Kaynar Topal, Ramazan Kargin, Mustafa Caliskan
BACKGROUND: The aims of this study were to examine the ophthalmic artery flow changes in patients with obstructive carotid artery disease, evaluate the orbital blood flow changes after carotid artery stenting and assess the safety of carotid stenting procedure by using transorbital colour and spectral Doppler sonography. METHODS: Thirty-one consecutive patients scheduled for carotid stenting with severe internal carotid artery stenosis (>60%; the study group) and 30 control subjects were included...
December 31, 2016: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28160605/increased-ipsilateral-uterine-artery-vascular-resistance-in-women-with-ovarian-endometrioma
#6
Miyoko Waratani, Taisuke Mori, Fumitake Ito, Yukiko Tanaka, Akemi Koshiba, Akiko Takahata, Jo Kitawaki
AIM: The aim of this study was to elucidate whether the presence of an ovarian endometrioma is associated with impaired vascular flow. We investigated changes in vascular flow on the ipsilateral and contralateral side of the endometrioma, before and after surgery. METHODS: This prospective case-control study included 144 women (ovarian endometrioma [n = 40], endometriosis without ovarian endometrioma [n = 33], non-endometriotic ovarian cyst [n = 17], and normal pelvis [n = 54])...
February 3, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28160344/eus-guided-celiac-plexus-block-and-neurolysis
#7
REVIEW
Ichiro Yasuda, Hsiu-Po Wang
Endoscopic ultrasound-guided celiac plexus neurolysis (EUS-CPN) is widely used for reducing pain originating from upper abdominal organs. It is mainly indicated to treat pancreatic cancer pain, but also to relieve pain due to chronic pancreatitis. Real-time guidance and color Doppler imaging by endoscopic sonography made the procedure easier and safer, resulting in greater pain relief. Currently, two techniques are used for EUS-CPN. The classic approach, known as the central technique, involves injection of a neurolytic agent at the base of the celiac axis...
February 3, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28150314/the-upturned-superior-mesenteric-artery-sign-for-first-trimester-detection-of-congenital-diaphragmatic-hernia-and-omphalocele
#8
Ravi Selvaraj Lakshmy, Joy Agnees, Nity Rose
OBJECTIVES: The aim of this study was to follow the course of the superior mesenteric artery (SMA) in first-trimester fetuses to predict the location of the small bowel. Its abnormal course aids in early detection of congenital diaphragmatic hernia (CDH) and assessment of the contents of omphalocele. METHODS: The SMA can be easily identified in a sagittal section of the fetus by using color Doppler sonography at the 11- to 14-week scan, and normally, it has a downward course caudally to supply the intestines...
February 2, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28150225/altered-oscillation-of-doppler-derived-renal-and-renal-interlobar-venous-flow-velocities-in-hypertensive-and-diabetic-patients
#9
Yusuke Kudo, Taisei Mikami, Mutsumi Nishida, Kazunori Okada, Sanae Kaga, Nobuo Masauzi, Satomi Omotehara, Hitoshi Shibuya, Kaoru Kahata, Chikara Shimizu
BACKGROUND AND PURPOSE: Flow velocity oscillation rate (FVOR) of the renal interlobar vein has been reported to be decreased in patients with urinary obstruction or diabetic nephropathy, and increased in those with hypertension during pregnancy. To clarify the clinical role of the renal interlobar venous FVOR, we investigated the flow velocity patterns of the renal vessels in patients with hypertension (HT) and/or diabetes (DM). METHODS AND RESULTS: Pulsed-wave Doppler sonography was performed in 34 patients: 15 with HT, 10 with DM, and nine with both HT and DM (HT-DM)...
February 1, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28149803/is-vascular-flow-a-predictor-of-malignant-thyroid-nodules-a-meta-analysis
#10
Helmi Khadra, Mohamed Bakeer, Adam Hauch, Tian Hu, Emad Kandil
BACKGROUND: Several reports have proposed that increased vascular flow on color Doppler sonography may be associated with malignancy in thyroid nodules. Others have described no correlation between the presence of flow and risk of malignancy. The purpose of this study was to determine whether the vascularity of a thyroid nodule can aid in the prediction of malignancy by performing a meta-analysis of the current literature. METHODS: Independent reviewers conducted a systematic review of publications from PubMed, EMBASE, and the Cochrane Database of Systematic Review using the following keyword searches: "vascular thyroid nodule", and "vascular malignant thyroid nodule"...
December 2016: Gland Surgery
https://www.readbyqxmd.com/read/28133836/the-flaming-tube-sign-at-hysterosalpingo-lidocaine-foam-sonography-combined-with-power-doppler-imaging-hylifosy-pd-description-of-the-technique
#11
A Ludwin, C O Nastri, I Ludwin, W P Martins
No abstract text is available yet for this article.
January 30, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28131087/emergency-color-doppler-sonography-of-the-extremity-artery-a-pictorial-essay
#12
Kevin Mennitt, Madhvi Deol, Jing Gao
Arterial color duplex sonography (CDUS) of the extremities is routinely analyzed in the field of emergency radiology. A retrospective review of 500 consecutive arterial CDUS extremity studies was performed in our emergency department. Abnormal CDUS examinations were classified into two groups according to their primary etiology: 1) traumatic arterial injuries (accidents or post-operative complications) and 2) acute arterial ischemia (thrombosis or embolism outside of the setting of acute trauma). This article reviews common CDUS imaging findings in a busy emergency radiology division including traumatic pseudoaneurysm, secondary pseudoaneurysm, arteriovenous fistula, acute ischemic arterial disease and chronic peripheral arterial disease...
January 15, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28127789/transcranial-doppler-monitoring-in-carotid-endarterectomy-a-systematic-review-and-meta-analysis
#13
Reshmi Udesh, Piruthiviraj Natarajan, Karthy Thiagarajan, Lawrence R Wechsler, Donald J Crammond, Jeffrey R Balzer, Parthasarathy D Thirumala
OBJECTIVES: To evaluate the efficacy of intraoperative transcranial Doppler monitoring in predicting perioperative strokes after carotid endarterectomy (CEA). METHODS: An electronic search of PubMed, Embase, and Web of Science databases was conducted for studies on transcranial Doppler monitoring in CEA published from January 1970 through September 2015. All titles and abstracts were independently screened on the basis of predetermined inclusion criteria, which included randomized clinical trials and prospective or retrospective cohort reviews, patients who underwent CEA with intraoperative transcranial Doppler monitoring (either middle cerebral artery velocity [MCAV] or cerebral microembolic signals [MES]) and postoperative neurologic assessments up to 30 days after the surgery, and studies including an abstract, published in English on adult humans 18 years and older with a sample size of 50 or greater...
January 27, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28120032/-tendinopathies-of-the-foot-and-ankle-evidence-for-the-origin-diagnostics-and-therapy
#14
Ralph Gaulke, Christian Krettek
Tendinopathies of the foot and ankle result in substantial impairment of the mobility of patients and have a high clinical significance. Knowledge of the origin of these diseases has been accumulated over decades from the multitude of intrinsic and extrinsic triggering factors based on biomechanical considerations with an evidence-based medicine (EBM) level 5. A high correlation between tendinopathy and hypervascularization of the Achilles tendon was found in a double-blind randomized prospective study using Doppler ultrasound (EBM level 1) but these results were not reproducible; therefore, the importance of these findings is unclear...
January 24, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28112534/nicolau-syndrome
#15
Andisheh Maneshi, Saeedeh Ravi, Mohammad Reza Salehi, Maliheh Hasannezhad, Hossein Khalili
A 23 year-old man was admitted to the hospital with chief complaints of pain, edema and spasm of the left lower limb, as well as mottling of dorsal and plantar aspects of the foot.  One week before the current admission, he was treated with oral co-amoxiclave and intramuscular penicillin 6.3.3. Immediately after the third injection, he experienced burning and yellowish discoloration at the site of the injection wich then progressed to his leg and foot. Pain, significant edema, spasm and mottling occurred within 30 minutes of the injection...
January 2017: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/28106465/evaluation-of-99m-tc-mibi-in-thyroid-gland-imaging-for-the-diagnosis-and-classification-of-amiodarone-induced-thyrotoxicosis
#16
Junqi Wang, Ruiguo Zhang
OBJECTIVE: Amiodarone-induced thyrotoxicosis (AIT) is caused by aminodaroneas a side effect of cardiovascular disease treatment. Based on the differences in their pathological and physiological mechanisms, many methods have been developed so far to differentiate AIT subtypes such as color flow Doppler sonography (CFDS)and 24 h radioiodine uptake (RAIU). However, these methods suffer from inadequate accuracy in distinguishing different types of AITs and sometimes lead to misdiagnosis and delayed treatments...
January 20, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28104945/neonatal-and-infantile-spinal-sonography-a-useful-investigation-often-underutilized
#17
Nikhil Nair, M Sreenivas, Arun K Gupta, Devasenathipathy Kandasamy, Manisha Jana
Sonography is an ideal, effective, noninvasive tool for evaluation of the spinal cord in neonatal and early infantile age groups owing to lack of ossification of the posterior elements of spine. Understanding normal anatomical appearances is a prerequisite for the interpretation of various pathologies of the spinal canal and its contents. This review elucidates normal appearances of the spinal cord in this age group, in both axial and sagittal planes. Usefulness of Doppler sonography is briefly discussed, and special emphasis is placed on normal anatomical variants that may mimic spinal abnormalities...
October 2016: Indian Journal of Radiology & Imaging
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
#18
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
#19
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
#20
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
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