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https://www.readbyqxmd.com/read/27911234/ventriculostomy-associated-hemorrhage-a-risk-assessment-by-radiographic-simulation
#1
Faith C Robertson, Muhammad M Abd-El-Barr, Srinivasan Mukundan, William B Gormley
OBJECTIVE Ventriculostomy entry sites are commonly selected by freehand estimation of Kocher's point or approximations from skull landmarks and a trajectory toward the ipsilateral frontal horn of the lateral ventricles. A recognized ventriculostomy complication is intracranial hemorrhage from cortical vessel damage; reported rates range from 1% to 41%. In this report, the authors assess hemorrhagic risk by simulating traditional ventriculostomy trajectories and using CT angiography (CTA) with venography (CTV) data to identify potential complications, specifically from cortical draining veins...
December 2, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27911229/c-2-arteriovenous-fistula-presenting-as-a-pathologic-hangman-s-fracture-case-report
#2
Rajeev D Sen, Carolina Gesteira Benjamin, Howard A Riina, Donato Pacione
The authors report on an 81-year-old woman with a pathologic hangman's fracture secondary to a complex arteriovenous fistula (AVF). The patient presented with severe, unremitting neck pain and was found to have fractures bilaterally through the pars interarticularis of C-2 with significant anterior subluxation of C-2 over C-3 along with widening of the left transverse foramen. Due to an abnormally appearing left vertebral artery (VA) on CT angiography, the patient underwent conventional angiography, which revealed a complex AVF stemming from the left VA at the level of C-2 with dilated posterior cervical veins and a large venous varix...
December 2, 2016: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/27911066/-conservative-management-of-liver-trauma-and-its-complications-current-gold-standard
#3
R Gander, J A Molino, S Santiago, A Laín, G Guillén, C Giné, G Royo, S López, M Pérez, I Díez, S Cañadas, J Lloret, J Bueno
INTRODUCTION: The liver is the second most frequently involved organ in abdominal trauma in children. The aim of this study was to review the characteristics of liver traumas (LT) in children, its treatment and complications. MATERIAL AND METHODS: Retrospective study of patients with LT treated between 2010-2014. We analyzed data regarding diagnosis, conservative management (CM), complications and treatment. RESULTS: Twenty-four patients of LT with a mean age of 9...
January 25, 2016: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
https://www.readbyqxmd.com/read/27908971/13n-ammonia-pet-ct-detection-of-myocardial-perfusion-abnormalities-in-beagle-dogs-after-local-heart-irradiation
#4
Jianbo Song, Rui Yan, Zhifang Wu, Jianguo Li, Min Yan, Xinzhong Hao, Jianzhong Liu, Sijin Li
: To determine the potential value of (13)N-ammonia positron emission tomography (PET)/computed tomography (CT) myocardial perfusion imaging (MPI) for detection of myocardial perfusion changes at early stage induced by radiation damage. METHODS: Thirty-six Beagle dogs were randomly divided into the control (n = 18) or the irradiation groups (n = 18). The irradiation group underwent local irradiation to the left ventricular anterior cardiac wall with a single dose of 20 Gy, whereas the control group received sham irradiation...
December 1, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27907049/dual-energy-ct-pulmonary-angiography-with-6g-iodine-a-propensity-score-matched-study
#5
Andreas Meier, Kai Higashigaito, Katharina Martini, Moritz Wurnig, Burkhardt Seifert, Dagmar Keller, Thomas Frauenfelder, Hatem Alkadhi
OBJECTIVE: To evaluate the performance of low contrast media (CM) dose dual-energy computed tomography pulmonary angiography (CTPA) with advanced monoenergetic reconstructions in patients with suspected pulmonary embolism (PE). MATERIALS AND METHODS: The study had institutional review board approval; all patients gave written informed consent. Forty-one patients (25 men, 16 women, mean age 62.9±14.7 years) undergoing low CM dose (15ml, 6g iodine) dual-energy CTPA with advanced monoenergetic reconstructions were matched via propensity-scoring based on logistic regression analysis with a comparison group of 41 patients (24 men, 17 women, mean age 62...
2016: PloS One
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
#6
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/27906912/ct-coronary-angiography-in-2016
#7
EDITORIAL
Christopher J Occleshaw
No abstract text is available yet for this article.
December 2, 2016: New Zealand Medical Journal
https://www.readbyqxmd.com/read/27904445/endovascular-treatment-of-unruptured-aneurysms-of-cavernous-and-ophthalmic-segment-of-internal-carotid-artery-with-flow-diverter-device-pipeline
#8
Marko Jevsek, Charbel Mounayer, Tomaz Seruga
BACKGROUND: Intra-arterial treatment of aneurysms by redirecting blood flow is a newer method. The redirection is based on a significantly more densely braided wire stent. The stent wall keeps the blood in the lumen of the stent and slows down the turbulent flow in the aneurysms. Stagnation of blood in the aneurysm sac leads to the formation of thrombus and subsequent exclusion of the aneurysm from the circulation. The aim of the study was to evaluate flow diverter device Pipeline for broad neck and giant aneurysm treatment...
December 1, 2016: Radiology and Oncology
https://www.readbyqxmd.com/read/27903374/-the-relationship-between-myocardial-bridge-in-mural-coronary-artery-segment-and-coronary-atherosclerosis
#9
S J Ding, R C Huang, C F Jia, L Zhong, P An, Z Q Wang, H Zhu, B L Wu, X C Zhou
Objective: The myocardial bridging (MB) prevalence, anatomic characteristics of MB, and the relationship between characteristics of MB in mural coronary artery segment and coronary atherosclerosis were analyzed. Methods: In this perspective nonrandomized controlled study, a total of 1 132 patients who admitted to our hospital for suspected or known coronary artery disease from January 2012 to June 2013 were enrolled. All patients underwent dual-source 64-slice spiral CT coronary angiography. The general patient characteristics including gender, age, history of hypertension, diabetes, hyperlipidemia and smoking, serum level of total cholesterol (TC) and LDL-C were recorded...
October 24, 2016: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/27903345/-application-of-low-dose-ct-angiography-with-70-kv-in-patients-with-peripheral-arterial-diseases
#10
Y H Duan, G M Lu, J Wu, X C Yang, D D Wu, Z P Cheng, X M Wang
Objective: To assess the image quality, radiation dose and diagnostic efficiency of peripheral arterial CT angiography (CTA) performed at tube voltage of 70 and 120 kV. Methods: Between January 2014 and December 2015, a total of 200 consecutive patients with known or suspected lower extremity arteriosclerosis obliterans (LEASO) underwent CTA.Patients were randomly divided into 2 groups by different scanning protocols.Group A (n=100): 70 kV and 0.8 ml/kg contrast agent, group B (n=100): 120 kV and 100 ml contrast agent...
November 22, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27901333/fractional-flow-reserve-lessons-from-platform-and-future-perspectives
#11
Gianluca Pontone, Patrizia Carità, Massimo Verdecchia, Dario Buccheri, Daniele Andreini, Andrea I Guaricci, Mark Rabbat, Mauro Pepi
In the treatment of stable coronary artery disease (CAD) the identification of patients who may gain the highest benefit from further invasive treatments is of pivotal importance for the healthcare system. In this setting, it has been established that an ischemia-guided revascularization strategy yields improved clinical outcomes in a cost- effective fashion compared with anatomy-guided revascularization alone. Invasive fractional flow reserve (FFR) is considered the gold standard, especially in the intermediate-range atherosclerotic lesions, for assessing lesion specific ischemia at the time of invasive coronary angiography and has now become the standard of reference for studies assessing the diagnostic performance of the various non-invasive stress tests...
November 30, 2016: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/27900508/temperature-dependence-of-viscosity-relaxation-times-t1-t2-and-simulated-contrast-for-potential-perfusates-in-post-mortem-mr-angiography-pmmra
#12
Bridgette Webb, Thomas Widek, Bernhard Neumayer, Christine Bruguier, Sylvia Scheicher, Hanna Sprenger, Silke Grabherr, Thorsten Schwark, Rudolf Stollberger
Developments in post-mortem imaging increasingly focus on addressing recognised diagnostic weaknesses, especially with regard to suspected natural deaths. Post-mortem MR angiography (PMMRA) may offer additional diagnostic information to help address such weaknesses, specifically in the context of sudden cardiac death. Complete filling of the coronary arteries and acceptable contrast with surrounding tissue are essential for a successful approach to PMMRA. In this work, the suitability of different liquids for inclusion in a targeted PMMRA protocol was evaluated...
November 29, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27897042/state-of-the-art-pulmonary-ct-angiography-for-acute-pulmonary-embolism
#13
Moritz H Albrecht, Matthew W Bickford, John W Nance, Longjiang Zhang, Carlo N De Cecco, Julian L Wichmann, Thomas J Vogl, U Joseph Schoepf
OBJECTIVE: Pulmonary CT angiography (CTA) is the imaging modality of choice in suspected acute pulmonary embolism (PE). Current pulmonary CTA techniques involve ever lower doses of contrast medium and radiation along with advanced postprocessing applications to enhance image quality, diagnostic accuracy, and provide added value in patient management. The objective of this article is to summarize these current developments and discuss the appropriate use of state-of-the-art pulmonary CTA...
November 29, 2016: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/27897030/influence-of-cardiac-motion-on-stent-lumen-visualization-in-third-generation-dual-source-ct-employing-a-pulsatile-heart-model
#14
Nils Petri, Tobias Gassenmaier, Thomas Allmendinger, Thomas Flohr, Wolfram Voelker, Thorsten A Bley
OBJECTIVE: To detect an in-stent restenosis an invasive coronary angiography is commonly performed. Due to the risk associated to this procedure, a non-invasive method to detect or exclude an in-stent restenosis is desirable. The purpose of this study was to evaluate the influence of cardiac motion on stent lumen visibility in a third-generation dual-source CT scanner (SOMATOM Force, Siemens Healthcare, Forchheim, Germany), employing a pulsatile heart model (CoroSim by Mecora). METHODS: Thirteen coronary stents with a diameter of 3...
November 29, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27896904/contrast-induced-encephalopathy-following-cardiac-catheterization
#15
Roberto Spina, Neil Simon, Romesh Markus, David Wm Muller, Krishna Kathir
OBJECTIVES: To describe the epidemiology, pathophysiology, clinical presentation, and management of contrast-induced encephalopathy (CIE) following cardiac catheterization. BACKGROUND: CIE is an acute, reversible neurological disturbance directly attributable to the intra-arterial administration of iodinated contrast medium. METHODS: The PubMed database was searched and all cases in the literature were retrieved and reviewed. RESULTS: 52 reports of CIE following cardiac catheterization were found...
November 29, 2016: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/27896450/extremity-cta-for-penetrating-trauma-10-year-experience-using-a-64-detector-row-ct-scanner
#16
Charles G Colip, Varun Gorantla, Christina A LeBedis, Jorge A Soto, Stephan W Anderson
PURPOSE: The purpose of this study is to assess the performance of CT angiography (CTA) in the evaluation of penetrating vascular trauma to the extremities in a large cohort of patients at our level I trauma center. METHODS: A retrospective, IRB-approved review of consecutive CTAs for the evaluation of penetrating trauma to the extremities in 446 patients (M/F = 396:50, mean age = 27 years) from 1/1/2005 to 5/1/2015 was performed. Medical records were reviewed to correlate diagnostic imaging findings with clinical history and subsequent interventions...
November 29, 2016: Emergency Radiology
https://www.readbyqxmd.com/read/27896386/dual-energy-ct-angiography-pros-and-cons-of-dual-energy-metal-artifact-reduction-algorithm-in-patients-after-endovascular-aortic-repair
#17
Johannes Boos, Jieming Fang, Benedikt H Heidinger, Vassilios Raptopoulos, Olga R Brook
PURPOSE: To evaluate the value of metal artifact reduction (MAR) post-processing and iodine MD images in fast kV-switching dual-energy computed tomography (DECT) in patients after endovascular aortic repair (EVAR). MATERIALS AND METHODS: Twenty-four consecutive EVAR patients (age 76 ± 9 years, 7/24 (29%) with coils, 9/24 (37.5%) with 10 endoleaks) who underwent DECT angiography were included in this HIPAA-compliant, IRB-approved retrospective study. Monochromatic reconstructions included 55, 60, 65, 70, and 75 keV with and without MAR and iodine MD images...
November 28, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27894902/the-feasibility-of-forward-projected-model-based-iterative-reconstruction-solution-first-for-coronary-320-row-computed-tomography-angiography-a-pilot-study
#18
Eriko Maeda, Nobuo Tomizawa, Shigeaki Kanno, Koichiro Yasaka, Takatoshi Kubo, Kenji Ino, Rumiko Torigoe, Kuni Ohtomo
BACKGROUND: We aimed to assess and compare the influence of Forward projected model-based Iterative Reconstruction SoluTion (FIRST), a recently introduced full iterative reconstruction method, on radiation doses and image quality with that of Adaptive Iterative Dose Reduction (AIDR) 3D for 320-row cardiac computed tomography (CT). METHODS: A total of 184 patients subjected to single-beat reconstruction cardiac CT were retrospectively included. The first 89 patients received standard radiation doses; their data were reconstructed using AIDR 3D, whereas the last 95 patients received in average 20% reduction in tube current; their data were reconstructed using FIRST...
November 9, 2016: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/27894786/mr-angiography-can-guide-ed-management-of-suspected-acute-aortic-dissection
#19
Gary X Wang, Sandeep S Hedgire, Thang Q Le, Jonathan D Sonis, Brian J Yun, Michael H Lev, Ali S Raja, Anand M Prabhakar
BACKGROUND: Aortic dissection is typically evaluated with computed tomography angiography (CTA). However, the feasibility of using magnetic resonance angiography (MRA) in the ED is unclear. This study examined the indications and outcomes of MRA in suspected aortic dissection evaluation in the ED. METHODS: An IRB approved review identified patients who underwent MRA in the ED for acute thoracic aortic dissection from January 2010 to June 2016. Demographics, clinical assessment, CTA contraindications, outcomes, and ED disposition were analyzed...
November 17, 2016: American Journal of Emergency Medicine
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
#20
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
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