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Vascular ultrasound

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https://www.readbyqxmd.com/read/28925086/optimizing-hepatic-venous-outflow-reconstruction-for-hepatic-vein-stenosis-with-indwelling-stent-in-living-donor-liver-retransplantation
#1
Takanobu Shigeta, Seisuke Sakamoto, Kengo Sasaki, Hajime Uchida, Soichi Narumoto, Akinari Fukuda, Mureo Kasahara
The patient was a boy of 7 years and 5 months of age, who underwent LDLT for acute liver failure at 10 months of age. HV stent placement was performed 8 months after LDLT because of intractable HV stenosis. At 7 years of age, his liver function deteriorated due to chronic rejection. The patient therefore underwent living donor liver retransplantation from his father. The HV was transected with the stent in situ. The IVC was resected due to stenosis. The pericardial cavity was opened and detached around the IVC to elongate the IVC...
September 18, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28919613/non-invasively-measured-carotid-artery-intima-medial-thickness-may-be-a-more-useful-marker-of-coronary-artery-disease-in-diabetic-than-non-diabetic-patients
#2
C M Ahmed, M K Hasan, B C Goswami, S K Banerjee, M F Rahman, H H Samira, D F Osmani, M N Hasan
Carotid intima-medial thickness has long been proposed as a surrogate marker of atherosclerotic vascular disease in other vascular beds, most notably the coronary arteries with its practical implications. This observational study aimed at exploring the relationship of a hypothetical stronger relationship of carotid intima-medial thickness with coronary artery disease in diabetic patients than non-diabetic counterparts. Thirty diabetic patients and 74 non-diabetic patients who were referred for coronary angiogram in the Departments of Cardiology Bangabandhu Sheikh Mujib Medical University and Combined Military Hospital, Dhaka Cantonment, Bangladesh from January, 2002 and December, 2003 were studied...
July 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/28919267/post-carotid-endarterectomy-hypertension-part-2-association-with-peri-operative-clinical-anaesthetic-and-transcranial-doppler-derived-parameters
#3
Jeremy E Newman, Mathew J Bown, Robert D Sayers, Jonathan P Thompson, Thompson G Robinson, Bryan Williams, Ronney Panerai, Peter Lacy, A Ross Naylor
OBJECTIVE/BACKGROUND: The first paper in this series observed that pre-operative baroreceptor dysfunction and poorly controlled hypertension were independently predictive for identifying patients who went on to require treatment for post-endarterectomy hypertension (PEH). The second paper examines the influence of intra-operative patient, transcranial Doppler (TCD) ultrasound, and anaesthetic variables on the incidence of PEH. METHODS: In total, 106 patients underwent carotid endarterectomy (CEA) under general anaesthesia...
September 14, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28918858/coronary-ct-angiography-features-of-ruptured-and-high-risk-atherosclerotic-plaques-correlation-with-intra-vascular-ultrasound
#4
Daniel R Obaid, Patrick A Calvert, Adam Brown, Deepa Gopalan, Nick E J West, James H F Rudd, Martin R Bennett
BACKGROUND: Features of ruptured and high-risk plaque have been described on coronary computed tomography angiography (coronary CTA), but not systematically assessed against intravascular ultrasound (IVUS). We examined the ability of coronary CTA to identify IVUS defined ruptured plaque and Virtual Histology Intravascular Ultrasound (VH-IVUS) defined thin-cap fibroatheroma (TCFA). METHODS: Sixty-three patients (32 with acute coronary syndrome and 31 with stable angina) underwent coronary CTA, IVUS and VH-IVUS...
September 5, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28914777/the-usefulness-of-contrast-enhanced-ultrasound-in-the-assessment-of-early-kidney-transplant-function-and-complications
#5
REVIEW
Sara Álvarez Rodríguez, Vital Hevia Palacios, Enrique Sanz Mayayo, Victoria Gómez Dos Santos, Víctor Díez Nicolás, María Dolores Sánchez Gallego, Javier Lorca Álvaro, Francisco Javier Burgos Revilla
OBJECTIVES: The routine diagnostic method for assessment of renal graft dysfunction is Doppler ultrasound. However, contrast-enhanced ultrasound (CEUS) may provide more information about parenchymal flow and vascular status of kidney allografts. The aim of the study was to assess the effectiveness of CEUS in the immediate post-transplant period, focusing on acute vascular complications. A brief review of available literature and a report of our initial experience is made. MATERIAL AND METHODS: 15 kidney transplant (KT) cases with clinical suspicion of acute surgical complication were assessed with CEUS and conventional Doppler ultrasound (US)...
September 15, 2017: Diagnostics
https://www.readbyqxmd.com/read/28913004/hypermetabolic-thyroid-incidentaloma-on-positron-emission-tomography-review-of-laboratory-radiologic-and-pathologic-characteristics
#6
Mehrdad Bakhshayesh Karam, Abtin Doroudinia, Farzaneh Joukar, Kobra Nadi, Atosa Dorudinia, Payam Mehrian, Abbas Yousefikoma
INTRODUCTION: Incidental hypermetabolic thyroid lesions on Positron Emission Tomography have significant clinical value and may harbor malignancy. In this study we evaluated laboratory, radiologic, and pathologic characteristics of incidental hypermetabolic thyroid lesions. MATERIALS AND METHODS: We evaluated 18 patients prospectively with various malignancies and hypermetabolic thyroid incidentaloma. The thyroid function tests, ultrasound assessment, and guided FNA biopsy were performed on all cases...
2017: Journal of Thyroid Research
https://www.readbyqxmd.com/read/28912363/tgf%C3%AE-transforming-growth-factor-%C3%AE-blockade-induces-a-human-like-disease-in-a-nondissecting-mouse-model-of-abdominal-aortic-aneurysm
#7
Fabien Lareyre, Marc Clément, Juliette Raffort, Stefanie Pohlod, Meghana Patel, Bruno Esposito, Leanne Master, Alison Finigan, Marie Vandestienne, Nikolaos Stergiopulos, Soraya Taleb, Bram Trachet, Ziad Mallat
OBJECTIVE: Current experimental models of abdominal aortic aneurysm (AAA) do not accurately reproduce the major features of human AAA. We hypothesized that blockade of TGFβ (transforming growth factor-β) activity-a guardian of vascular integrity and immune homeostasis-would impair vascular healing in models of nondissecting AAA and would lead to sustained aneurysmal growth until rupture. APPROACH AND RESULTS: Here, we test this hypothesis in the elastase-induced AAA model in mice...
September 14, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28912005/proximal-radial-artery-arteriovenous-fistula-for-hemodialysis-vascular-access
#8
William C Jennings, Alexandros Mallios, Nasir Mushtaq
OBJECTIVE: This study reviewed our experience with proximal radial artery-based arteriovenous fistulas (PRA-AVFs) for hemodialysis vascular access, evaluating characteristics of the patients, functional patency, risk of steal syndrome, survival of the patient, and technical considerations. METHODS: We retrospectively analyzed our database of consecutive patients, identifying those individuals with a PRA-AVF created during a 12-year period. In addition to physical examination, all patients underwent ultrasound vessel mapping by the operating surgeon, identifying the PRA-AVF configuration and outflow target most likely to succeed...
September 11, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28910426/optical-coherence-tomography-angiography-features-of-iris-racemose-hemangioma-in-4-cases
#9
Jason L Chien, Kareem Sioufi, Sandor Ferenczy, Emil Anthony T Say, Carol L Shields
Importance: Optical coherence tomography angiography (OCTA) allows visualization of iris racemose hemangioma course and its relation to the normal iris microvasculature. Objective: To describe OCTA features of iris racemose hemangioma. Design, Setting, and Participants: Descriptive, noncomparative case series at a tertiary referral center (Ocular Oncology Service of Wills Eye Hospital). Patients diagnosed with unilateral iris racemose hemangioma were included in the study...
September 14, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28902753/nonoperative-management-and-novel-imaging-for-posterior-circumflex-humeral-artery-injury-in-volleyball
#10
Daan van de Pol, R Nils Planken, Aart Terpstra, Marja Pannekoek-Hekman, P Paul F M Kuijer, Mario Maas
We report on a 34-yr-old male elite volleyball player with symptomatic emboli in the spiking hand from a partially thrombosed aneurysm of the posterior circumflex humeral artery (PCHA) in his dominant shoulder. At initial diagnosis and follow-up, a combination of time-resolved and high-resolution steady state contrast-enhanced magnetic resonance angiography (CE-MRA) enabled detailed visualization of: (1) emboli that were not detectable by vascular ultrasound; and (2) the PCHA aneurysm, including compression during abduction and external rotation (ABER provocation)...
September 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/28900518/nail-unit-ultrasound-a-complete-guide-of-the-nail-diseases
#11
REVIEW
Felipe Aluja Jaramillo, Diana Carolina Quiasúa Mejía, Hector Mauricio Martínez Ordúz, Cesar González Ardila
INTRODUCTION: The nails have a functional and esthetic importance for patients. Almost always, the nail disorders are diagnosed on the basis of clinical findings, but imaging methods may be required for a better assessment. These imaging methods, such as ultrasound and magnetic resonance, may help to establish an accurate diagnosis. Magnetic resonance imaging is not widely available and sometimes may be very expensive; that is why, ultrasound is an excellent imaging modality. Our objective is to expose the nail unit anatomy, the nail unit anatomy in ultrasound, and some of the frequent pathologies found in our daily practice...
September 2017: Journal of Ultrasound
https://www.readbyqxmd.com/read/28892590/surgeon-performed-thyroid-ultrasound-proving-utility-and-credibility-in-selecting-patients-for-fine-needle-aspiration-according-to-the-american-thyroid-association-guidelines-a-retrospective-study-of-500-patients
#12
Oded Cohen, Tom Raz Yarkoni, Yonatan Lahav, Offer Azoulay, Doron Halperin, Moshe Yehuda
DESIGN: Case series with chart review. SETTING: Single academic center. PARTICIPANTS: The data of all patients who underwent surgeon performed ultrasound (SUS(between 7/2009 and 9/2012 was retrospectively reviewed. MAIN OUTCOME MEASURES: A correlation between sonographic features and a non-benign cytology\malignant pathology. RESULTS: Four hundred ninety eight nodules were included. Solid texture, irregular margins, hypoechogenicity and intranodular vascularity were significantly associated with malignancy when benign to non-benign cytology was compared, and when compared to malignant pathology...
September 11, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28888180/density-of-tubal-ring-vascularization-a-new-marker-for-prediction-of-success-of-medical-treatment-in-tubal-ectopic-pregnancy
#13
Serpil Aydoğmuş, Hüseyin Aydoğmuş, Servet Gençdal, Sefa Kelekçi
OBJECTIVES: The diagnosis of ectopic pregnancy has been facilitated especially by the use of Doppler ultrasonography. In previous studies the presence of peri-trophoblastic blood flow by Doppler ultrasound and the detection of a low-resistance, high-velocity flow pattern were defined as specific signs for trophoblastic tissue. The aim of this study was to evaluate the efficacy of Doppler ultrasonography in the prediction of treatment success in tubal pregnancies being treated with single dose conservative methotrexate...
August 26, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28888114/carotid-stiffness-extra-media-thickness-and-visceral-adiposity-in-young-adults
#14
Wesley K Lefferts, Susan D Sperry, Randall S Jorgensen, Ari G Kasprowicz, Michael R Skilton, Arturo Figueroa, Kevin S Heffernan
BACKGROUND AND AIMS: Carotid extra-media thickness (EMT) encompasses arterial adventitia and perivascular adipose tissue (PAT). Adventitial remodeling and PAT may contribute independently to functional (stiffness) and structural (remodeling) changes in artery wall properties. Visceral adiposity may contribute to PAT, thereby affecting artery stiffness. We investigated the relationships between carotid artery stiffness, EMT, and visceral adiposity in young, healthy individuals. METHODS: 135 healthy males (20 ± 2 yr, body mass index [BMI] 24...
September 1, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28887861/ultrasound-guided-intratumoral-radiofrequency-ablation-coagulation-to-facilitate-meningioma-resection-preliminary-experience
#15
Li Yan, Junle Yang, Xiaodong Zhou, Guangbin He, Yu Zheng, Yali Zhu, Weiping Liu, Wen Luo, Haiying Qin, Haijing Liu, Xicai Yi, Yin Zhou
OBJECTIVES: This study aimed to explore the feasibility and safety of intratumoral radiofrequency ablation (RFA) in meningioma resection. METHODS: This study was approved by the Xijing Ethics Committee, and informed consent was obtained from all of the patients. Thirteen patients with meningiomas were recruited in the Neurosurgery Department of Xijing Hospital. These patients were treated with intratumoral RFA and surgery. We also chose 13 patients with meningiomas treated with traditional surgery as the control group...
September 9, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28887222/contrast-enhanced-ultrasound-imaging-can-predict-vascular-targeted-photodynamic-therapy-induced-tumor-necrosis-in-small-animals
#16
F H Cornelis, K Kim, J C Durack, S Jebiwott, A Scherz, G Srimathveeravalli, J A Coleman
AIMS: To evaluate the accuracy of contrast-enhanced ultrasound (CEUS) for monitoring tumor necrosis following WST-11 vascular targeted photodynamic therapy (VTP) using imaging-pathology correlation. METHODS: Renal adenocarcinoma cells were injected into the hindlimb of 13 BalB/c mice resulting in tumors ranging from 9.8 to 194.3mm(3). US guidance was used to place a laser fiber into the tumor, and VTP was performed. CEUS was performed prior to animal sacrifice, 24hours post-VTP...
September 5, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28886989/factors-associated-with-contralateral-deep-venous-thrombosis-after-iliocaval-venous-stenting
#17
S A Khairy, R J Neves, O Hartung, G J O'Sullivan
BACKGROUND: The majority of iliac venous obstructions occur on the left side, and endovascular therapy has become the first line treatment for this condition. A left common iliac venous stent will protrude into the inferior vena cava (IVC) to some extent, thereby covering the contralateral common iliac vein (CIV) outflow. This may increase the risk of thrombosis of the contralateral iliac vein. The aim of this paper was to determine the rate of, and factors associated with, contralateral lower limb venous thrombosis after stenting, and to evaluate the results of salvage revascularisation...
September 5, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28886806/high-frequency-ultrasound-examination-in-the-diagnosis-of-skin-cancer
#18
REVIEW
Robert L Bard
Ultrasound above 14 MHz images epidermis, dermis, and subcutaneous tissues in real time. Tumor depth is ascertained with B-mode. Three-dimensional imaging depicts nonpalpable, in-transit, and satellite lesions. Doppler blood flow technologies measure tumor neovascularity and map vascular structures. Three-dimensional Doppler histogram reconstruction measures tumor aggression and metastatic potential proportional to the percentage of malignant vessels. Subcutaneous investigation reveals nonpalpable metastatic disease and nodal basin lymphadenopathy...
October 2017: Dermatologic Clinics
https://www.readbyqxmd.com/read/28885718/transvaginal-ultrasound-guided-core-needle-biopsy-of-pelvic-masses
#19
Shi-Yang Lin, Yong-Hong Xiong, Miao Yun, Long-Zhong Liu, Wei Zheng, Xi Lin, Xiao-Qing Pei, An-Hua Li
OBJECTIVES: This study assessed the efficacy and safety of transvaginal ultrasound (US)-guided core needle biopsy (CNB) for obtaining adequate pelvic mass samples for histologic analysis and evaluated factors that may affect biopsy success. METHODS: Two hundred cases underwent transvaginal US-guided CNBs for primary inoperable tumors, suspicion of metastases to the ovaries or peritoneum, recurrence, or other solid lesions in the pelvis. Biopsy samples were obtained from the pelvic cavity (67...
September 8, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28885208/the-diagnostic-value-of-contrast-enhanced-ultrasound-ceus-as-a-new-technique-for-imaging-of-vascular-complications-in-renal-transplants-compared-to-standard-imaging-modalities
#20
K Mueller-Peltzer, J Rübenthaler, M Fischereder, M Reiser, D-A Clevert
BACKGROUND: Vascular complications in renal transplant patients are a well-known issue in post transplant patient care. If malfunctioning of the renal transplant is suspected to be caused by vascular complications an early diagnosis and therapy is required to maintain the renal transplant. Computed tomography (CT), digital substraction angiography (DSA) and radioisotope renography are the gold standard imaging modalities to diagnose vascular complications. OBJECTIVE: To analyse the sensitivity and specificity of contrast-enhanced ultrasound (CEUS) in comparison to the standard imaging modalities CT, DSA and radioisotope renography in the diagnosis of vascular complications in renal transplant patients...
September 4, 2017: Clinical Hemorheology and Microcirculation
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