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https://www.readbyqxmd.com/read/27922253/imaging-modalities-of-carotid-artery-stenting
#1
Tomoyuki Umemoto, Andrea Pacchioni, Bernhard Reimers
Compared with conventional angiogram-guided procedure, intravascular imaging modalities give us a lot of useful information to make the procedure better. Intravascular imaging modalities give us the information about lesion characters, reference vessel diameter and the interaction between the stent strut and the plaque such as stent strut malapposition or plaquqe prolapse in real time during the procedure. We can change our strategy according to these information. Intravascular ultrasound (IVUS) is a most common intravasculr imaging modality during CAS in these days...
December 6, 2016: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/27920845/the-great-imitator-igg4-periaortitis-masquerading-as-an-acute-aortic-syndrome-on-computed-tomographic-angiography
#2
Drew W Moore, Neil J Hansen, Dominick J DiMaio, William L Harrison
We present the case of a 52-year-old woman who presented to the emergency department with chest and neck pain. Initial cervical spine magnetic resonance imaging shows an abnormal flow void in the left vertebral artery, which prompted a computed tomographic angiogram. This demonstrated a hyperdense thickened ascending aortic wall, which extended into the great vessel origins. Clinically and radiographically interpreted as an acute aortic syndrome and/or intramural hematoma, the patient underwent ascending aortic repair with graft...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27918576/respect-ed-rates-of-pulmonary-emboli-pe-and-sub-segmental-pe-with-modern-computed-tomographic-pulmonary-angiograms-in-emergency-departments-a-multi-center-observational-study-finds-significant-yield-variation-uncorrelated-with-use-or-small-pe-rates
#3
David Mountain, Gerben Keijzers, Kevin Chu, Anthony Joseph, Catherine Read, Gabriel Blecher, Jeremy Furyk, Chrianna Bharat, Karthik Velusamy, Andrew Munro, Kylie Baker, Frances Kinnear, Ahses Mukherjee, Gina Watkins, Paul Buntine, Georgia Livesay, Daniel Fatovich
INTRODUCTION: Overuse of CT Pulmonary Angiograms (CTPA) for diagnosing pulmonary embolism (PE), particularly in Emergency Departments (ED), is considered problematic. Marked variations in positive CTPA rates are reported, with American 4-10% yields driving most concerns. Higher resolution CTPA may increase sub-segmental PE (SSPE) diagnoses, which may be up to 40% false positive. Excessive use and false positives could increase harm vs. benefit. These issues have not been systematically examined outside America...
2016: PloS One
https://www.readbyqxmd.com/read/27915215/cha2ds2-vasc-hsf-score-new-predictor-of-severity-of-coronary-artery-disease-in-2976-patients
#4
Ranjan Modi, S V Patted, P C Halkati, Sanjay Porwal, Sameer Ambar, Prasad Mr, Vijay Metgudmath, Ameet Sattur
BACKGROUND: CHADS2 and CHA2DS2-VASc scores have been used for assessing prognostic risk of thromboembolism in non valvular atrial fibrillation patients. They include similar risk factors for the development of CAD To increase the likelihood of determining CAD severity, the CHA2DS2-VASc-HS and CHA2DS2-VASc-HSF score comprising of hyperlipidemia, smoking and family history respectively in addition to the components of the CHA2DS2-VASc score and male instead of female gender. The aim was to investigate whether these risk scores can be used to predict CAD severity...
October 29, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27913440/optical-coherence-tomographic-angiography-of-choroidal-neovascularization-ill-defined-with-fluorescein-angiography
#5
Mehrdad Malihi, Yali Jia, Simon S Gao, Christina Flaxel, Andreas K Lauer, Thomas Hwang, David J Wilson, David Huang, Steven T Bailey
PURPOSE: To evaluate the morphological structure of ill-defined choroidal neovascularisation (CNV) with traditional fluorescein angiography (FA) compared with optical coherence tomographic angiography (OCTA). METHODS: A retrospective case series study of 11 eyes with ill-defined CNV on FA was performed. Eyes were scanned with commercially available spectral-domain optical coherence tomography (OCT) (70 000 A-scans/s). The split-spectrum amplitude-decorrelation angiography (SSADA) algorithm was used to distinguish blood flow from static tissue...
December 2, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/27911228/erratum-screening-via-ct-angiogram-after-traumatic-cervical-spine-fractures-narrowing-imaging-to-improve-cost-effectiveness-experience-of-a-level-i-trauma-center
#6
Gabriel A Smith
No abstract text is available yet for this article.
December 2, 2016: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/27911224/letter-to-the-editor-screening-via-ct-angiogram-and-cervical-spine-fractures
#7
Xiao Wu, David Durand, Vivek B Kalra, Sowmya Mahalingam, Ajay Malhotra
No abstract text is available yet for this article.
December 2, 2016: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/27908793/why-are-nearly-all-ct-pulmonary-angiograms-for-suspected-pulmonary-embolism-negative
#8
EDITORIAL
James E Dalen, Anna L Waterbrook
No abstract text is available yet for this article.
November 28, 2016: American Journal of Medicine
https://www.readbyqxmd.com/read/27906915/the-value-of-ct-cardiac-angiography-and-ct-calcium-score-testing-in-a-modern-cardiology-service-in-new-zealand-a-report-of-a-single-centre-eight-year-experience-from-5-237-outpatient-procedures
#9
Chris Ellis, Greg Gamble, Colin Edwards, Niels van Pelt, Ruvin Gabriel, Boris Lowe, Jonathan Christiansen, Andrew To, Helen Winch, Mark Osborne, John Ormiston, Malcolm Legget
BACKGROUND: Computed tomographic (CT) cardiac angiography is of increasing value in several areas of patient management in cardiology. We assessed the ability of CT cardiac angiography to effectively 'rule out' severe coronary stenoses in patients presenting with 'atypical' symptoms and/or an equivocal stress test, which offers a new approach to the management of coronary artery disease. We also examined the use of the CT calcium score test in cardiovascular (CVS) risk assessment. METHODS: From a large single centre (Mercy Hospital) in Auckland, using a prospectively acquired, comprehensive database, we audited the entire eight-year experience of 5,169 patients (7/8/06 to 31/1/14) who underwent 5,237 64-slice computed tomographic (CT) cardiac angiogram or CT calcium score tests (GE Lightspeed scanner)...
December 2, 2016: New Zealand Medical Journal
https://www.readbyqxmd.com/read/27900349/symptomatic-bilateral-coronary-artery-fistula-to-pulmonary-artery-in-elderly-patient
#10
Francisco Pereira da Silva, Paulo Donato, Henrique Donato, Elisabete Jorge, Maria Joao Ferreira, Filipe Caseiro-Alves
We report the imaging findings of an uncommon coronary vascular termination anomaly, with fistula to the pulmonary artery. This 70 year old female patient presented unstable angina, showing a coronary artery fistula depicted in coronary angiogram from the left coronary to the pulmonary artery, with no significant atherosclerotic pathology. Due to development of ventricular tachycardia in stress echocardiogram examination, she was proposed for coronary fistula closure. Coronary CT was performed for procedure planning and allowed the identification of a second unsuspected fistula from the right coronary to the right pulmonary artery...
2016: European Journal of Radiology Open
https://www.readbyqxmd.com/read/27896259/prenatal-diagnosis-of-spontaneous-twin-anemia-polycythemia-sequence-and-postnatal-examination-of-placental-vascular-anastomoses
#11
Jin Young Bae, Jin Ju Oh, Seong Yeon Hong
Twin anemia-polycythemia sequence (TAPS) is characterized by a wide discrepancy of hemoglobin between two monochorionic fetuses without sign of twin oligo-polyhydramnios sequence. A primiparous woman with monochorionic diamniotic twin transferred for preterm labor. Ultrasonographic evaluation at 32+3 weeks of gestation revealed increased middle cerebral artery-peak systolic velocity (77.4 cm/sec, 1.69 multiples of median) in donor and decreased in recipient twin (36.4 cm/sec, 0.79 multiples of median), the twin was diagnosed with TAPS...
November 2016: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/27895453/a-case-of-a-living-related-kidney-transplantation-after-ex-vivo-repair-of-the-donor-renal-artery-aneurysm
#12
P Christopoulos, A Faryal, M Dosani, D Rix, D Talbot
BACKGROUND: Kidney transplantation is the definite surgical treatment for end-stage renal disease. Shortage of organs and the increasing number of patients with end-stage renal disease has led to an expansion of the selection criteria promoting the use of organs from marginal donors. Use of kidneys with renal artery aneurysm (RAA) is one such example. Description of the case: We report a case of living-related kidney transplantation from a 46-year-old female donor with unilateral RAA to her 68-year-old father...
January 2016: Hippokratia
https://www.readbyqxmd.com/read/27893633/the-study-of-medial-superficial-perforator-of-the-superficial-circumflex-iliac-artery-perforator-flap-using-ct-angiography-and-surgical-anatomy-in-142-patients
#13
Hyun Suk Suh, Hyung Hwa Jeong, Joon Pio Hong
BACKGROUND: The two major perforators supplying the superficial circumflex iliac artery perforator (SCIP) flap are the medial (superficial) and lateral (deep) perforators but lacks detailed description. The purpose of this study was to clarify the anatomy. MATERIAL AND METHOD: In a prospective analysis of 142 patients, CT angiograms of 284 SCIP regions were evaluated and 142 SCIP flaps were surgically correlated. The origin of the SCIA, the origin of the medial perforator, the location where it penetrates the deep fascia, and its pattern of pathway after penetration of the superficial fascia were evaluated...
November 21, 2016: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27892881/comparison-of-visual-assessment-of-coronary-stenosis-with-independent-quantitative-coronary-angiography-findings-from-the-prospective-multicenter-imaging-study-for-evaluation-of-chest-pain-promise-trial
#14
Rohan Shah, Eric Yow, William Schuyler Jones, Louis P Kohl, Andrzej S Kosinski, Udo Hoffmann, Kerry L Lee, Christopher B Fordyce, Daniel B Mark, Alicia Lowe, Pamela S Douglas, Manesh R Patel
: The outcomes in patients by visual assessment and quantitative coronary angiography (QCA) for obstructive coronary artery disease (CAD) are not known. Our objectives were to compare visual and QCA estimates of obstructive CAD and to assess their relationship to outcomes in stable patients with symptoms of CAD. METHODS: The PROMISE trial randomized 10,003 patients with CAD symptoms to anatomical or functional testing. Site reports of invasive angiography detailing visual stenosis and independent, blinded QCA were performed for obstructive CAD (≥50% stenosis)...
October 26, 2016: American Heart Journal
https://www.readbyqxmd.com/read/27892770/myocardial-infarction-with-non-obstructive-coronary-arteries-minoca-a-whole-new-ball-game
#15
Nana Poku, Stephane Noble
MINOCA is a clinical syndrome that encompasses a subgroup of heterogeneous patients who present with myocardial infarction yet do not have any significant coronary artery obstruction on angiogram. As many as one in ten patients with acute myocardial infarction (AMI) will not have an occluded coronary artery, and the reported prevalence keeps rising, in part due to better recognition of this syndrome. Current guidelines offer several diagnostic algorithms but MINOCA remains largely under-recognised and little is known about whether patients might benefit from a more specific treatment modality...
November 28, 2016: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/27890748/small-unruptured-intracranial-aneurysm-%C3%A2-5mm-associated-with-epilepsy-report-of-2-cases-and-literature-review
#16
Fuxin Lin, Hui Wan, Dezhi Kang, Yuanxiang Lin
BACKGROUND: Due to the continuing improvements in imaging technology, an increasing number of epileptogenic small (≤5mm) unruptured intracranial aneurysms (sUIA) are being diagnosed since 2000. However, they are not systematically described and reviewed until now. CASE DESCRIPTION AND THE LITERATURE REVIEW: We reported 2 patients with sUIA who initially presented with complex partial seizures (CPS). Scalp electroencephalography (EEG) showed the seizures activity arising from the mesial temporal/frontal areas, but conventional magnetic resonance imaging (MRI) scans were normal in both patients...
November 24, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27890537/computational-fluid-dynamics-modeling-of-contrast-transport-in-basilar-aneurysms-following-flow-altering-surgeries
#17
Alireza Vali, Adib A Abla, Michael T Lawton, David Saloner, Vitaliy L Rayz
In vivo measurement of blood velocity fields and flow descriptors remains challenging due to image artifacts and limited resolution of current imaging methods; however, in vivo imaging data can be used to inform and validate patient-specific computational fluid dynamics (CFD) models. Image-based CFD can be particularly useful for planning surgical interventions in complicated cases such as fusiform aneurysms of the basilar artery, where it is crucial to alter pathological hemodynamics while preserving flow to the distal vasculature...
November 11, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27888269/internal-carotid-artery-pseudoaneurysm-and-ischemic-stroke-secondary-to-retropharyngeal-and-parapharyngeal-abscess-a-case-report-and-review-of-the-literature
#18
Michael W Ruff, Deena M Nasr, James P Klaas, Deborah L Renaud
Internal carotid artery pseudoaneurysm is an uncommon complication of retropharyngeal and parapharyngeal abscess in children. Treatment of the pseudoaneurysm has evolved in recent years from surgical ligation to endovascular techniques. Neurologic sequelae most commonly consist of Horner's syndrome with cerebral ischemia being uncommon. The clinical course of a 2-year-old boy with retropharyngeal abscess complicated by internal carotid artery pseudoaneurysm, is described and the literature is reviewed. A conventional angiogram confirmed the presence of a large pseudoaneurysm with no anterograde flow distal to the pseudoaneurysm and substantial collateral flow across the circle of Willis, with filling of the left anterior and middle cerebral arteries via the anterior and posterior communicating arteries...
November 25, 2016: Journal of Child Neurology
https://www.readbyqxmd.com/read/27888225/use-of-the-pipeline-embolization-device-for-recurrent-and-residual-cerebral-aneurysms-a-safety-and-efficacy-analysis-with-short-term-follow-up
#19
Anna Luisa Kühn, Katyucia de Macedo Rodrigues, J Diego Lozano, David E Rex, Francesco Massari, Takamitsu Tamura, Mary Howk, Christopher Brooks, Jenna L'Heureux, Matthew J Gounis, Ajay K Wakhloo, Ajit S Puri
OBJECTIVE: Evaluation of the safety and efficacy of the Pipeline embolization device (PED) when used as second-line treatment for recurrent or residual, pretreated ruptured and unruptured intracranial aneurysms (IAs). METHODS: Retrospective review of our database to include all patients who were treated with a PED for recurrent or residual IAs following surgical clipping or coiling. We evaluated neurological outcome and angiograms at discharge, 6- and 12-months' follow-up and assessed intimal hyperplasia at follow-up...
November 25, 2016: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/27885318/multiscale-opening-of-conjoined-fuzzy-objects-theory-and-applications
#20
Punam K Saha, Subhadip Basu, Eric A Hoffman
Theoretical properties of a multi-scale opening (MSO) algorithm for two conjoined fuzzy objects are established, and its extension to separating two conjoined fuzzy objects with different intensity properties is introduced. Also, its applications to artery/vein (A/V) separation in pulmonary CT imaging and carotid vessel segmentation in CT angiograms (CTAs) of patients with intracranial aneurysms are presented. The new algorithm accounts for distinct intensity properties of individual conjoined objects by combining fuzzy distance transform (FDT), a morphologic feature, with fuzzy connectivity, a topologic feature...
October 2016: IEEE Transactions on Fuzzy Systems: a Publication of the IEEE Neural Networks Council
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