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https://www.readbyqxmd.com/read/28431628/clinical-and-quantitative-analysis-of-patients-with-crowned-dens-syndrome
#1
Teruyuki Takahashi, Masato Tamura, Toshiaki Takasu, Satoshi Kamei
BACKGROUND: Crowned dens syndrome (CDS) is a radioclinical entity defined by calcium deposition on the transverse ligament of atlas (TLA). In this study, the novel semi-quantitative diagnostic criteria for CDS to evaluate the degree of calcification on TLA by cervical CT are proposed. METHOD: From January 2010 to September 2014, 35 patients who were diagnosed with CDS by cervical CT were adopted as subjects in this study. Based on novel criteria, calcium deposition on TLA was classified into "Stage" and "Grade", to make a score, which was evaluated semi-quantitatively...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28413071/performance-of-ultra-low-dose-ct-for-the-evaluation-of-coronary-calcification-a-direct-comparison-with-coronary-calcium-score
#2
V V Silveira de Souza, F Soares Torres, B Hochhegger, G Watte, G Sartori, F Lucchese, B Azambuja Gonçalves
AIM: To evaluate the diagnostic performance of ultra-low-dose computed tomography (ULDCT) in comparison to standard coronary calcium score (CCS) acquisition for the evaluation of coronary artery calcification (CAC). MATERIALS AND METHODS: Standard CCS acquisition and ULDCT were performed in patients referred for coronary CT angiography for the evaluation of coronary artery disease. CAC in ULDCT was graded subjectively using a four-point scale (from 0, no calcification, to 3, severe calcification) for the complete study and for each individual coronary segment...
April 13, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28411031/prognostic-value-of-visually-detected-coronary-artery-calcification-on-unenhanced-non-gated-thoracic-computed-tomography-for-prediction-of-non-fatal-myocardial-infarction-and-all-cause-mortality
#3
Lisa Shao, Andrew T Yan, Gerald Lebovic, Harvey H Wong, Anish Kirpalani, Djeven P Deva
PURPOSE: To determine the prognostic value of visually detected coronary artery calcification (CAC) on unenhanced non-gated thoracic computed tomography (CT) for non-fatal myocardial infarction (MI) and all-cause mortality. METHODS: This retrospective single-centre cohort study comprised of 410 consecutive patients aged 40-80 years without any known cardiovascular disease at baseline. CT images without electrocardiogram-gating were acquired for a variety of respiratory medicine indications...
March 28, 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28395916/strengths-and-limitations-of-coronary-angiography-with-turbo-high-pitch-third-generation-dual-source-ct
#4
M M Ochs, F Andre, G Korosoglou, T Fritz, S Seitz, Y Bogomazov, C L Schlett, R Sokiranski, A Sommer, F Gückel, M Brado, H-U Kauczor, J Görich, H A Katus, S J Buss
AIM: To define practical limitations of diagnostic image quality for recently introduced turbo high-pitch scan mode (THP) in third-generation dual-source computed tomography (CT). MATERIALS AND METHODS: Two hundred and twenty-nine consecutive patients undergoing CT coronary angiography were included in this retrospective single-centre analysis. A contrast-enhanced volume dataset was acquired in THP. Image quality of coronary segments was classified as diagnostic or non-diagnostic by three blinded readers...
April 8, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28390834/coronary-artery-calcium-scoring-for-ruling-out-acute-coronary-syndrome-in-chest-pain-ct
#5
Ricarda Hinzpeter, Kai Higashigaito, Fabian Morsbach, David Benz, Robert Manka, Burkhardt Seifert, Dagmar I Keller, Hatem Alkadhi
No abstract text is available yet for this article.
March 31, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28379388/prevalence-of-obstructive-coronary-artery-disease-and-prognosis-in-patients-with-stable-symptoms-and-a-zero-coronary-calcium-score
#6
Tarun K Mittal, Alison Pottle, Ed Nicol, Mahmoud Barbir, Ben Ariff, Saeed Mirsadraee, Michael Dubowitz, Diana A Gorog, Piers Clifford, Soroosh Firoozan, Robert Smith, Simon Dubrey, Harmeet Chana, Jaymin Shah, Nigel Stephens, Christopher Travill, Andrew Kelion, Mini Pakkal, Adam Timmis
Aims: CT calcium scoring (CTCS) and CT cardiac angiography (CTCA) are widely used in patients with stable chest pain to exclude significant coronary artery disease (CAD). We aimed to resolve uncertainty about the prevalence of obstructive coronary artery disease and long-term outcomes in patients with a zero-calcium score (ZCS). Methods and results: Consecutive patients with stable cardiac symptoms referred for CTCS or CTCS and CTCA from chest pain clinics to a tertiary cardiothoracic centre were prospectively enrolled...
March 31, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28378112/automatic-determination-of-cardiovascular-risk-by-ct-attenuation-correction-maps-in-rb-82-pet-ct
#7
Ivana Išgum, Bob D de Vos, Jelmer M Wolterink, Damini Dey, Daniel S Berman, Mathieu Rubeaux, Tim Leiner, Piotr J Slomka
BACKGROUND: We investigated fully automatic coronary artery calcium (CAC) scoring and cardiovascular disease (CVD) risk categorization from CT attenuation correction (CTAC) acquired at rest and stress during cardiac PET/CT and compared it with manual annotations in CTAC and with dedicated calcium scoring CT (CSCT). METHODS AND RESULTS: We included 133 consecutive patients undergoing myocardial perfusion (82)Rb PET/CT with the acquisition of low-dose CTAC at rest and stress...
April 4, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28368527/analysis-of-recurrent-stenosis-after-carotid-endarterectomy-featuring-primary-plaque-calcification
#8
Hiroyuki Katano, Mitsuhito Mase, Yusuke Nishikawa, Hiroshi Yamada, Kazuo Yamada
BACKGROUND: The relationship between calcification in primary plaque and restenosis after carotid endarterectomy (CEA) has been seldom investigated. OBJECTIVE: To clarify the relationship between characteristics of calcified carotid plaque and recurrent stenosis after CEA, as well as the disease's natural course. METHODS: Ninety-four plaques out of 107 consecutive CEAs were retrospectively analyzed with regard to calcification, employing calcium score as well as shape, location, and other characteristics of original plaques...
March 23, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28364395/severe-and-asymptomatic-aortic-stenosis-management-challenge-knowing-that-we-do-not-really-know
#9
REVIEW
Lionel Tastet, Louis Simard, Marie-Annick Clavel
The clinical management of asymptomatic patients with severe aortic valve stenosis (AS) may be challenging. Indeed, there is substantial controversy over the optimal timing of intervention for these patients, as some advocate early intervention while others urge for a conservative management until symptom onset. In the meantime of randomized clinical trials aiming to compare both strategies of management, an integrative approach including several imaging modalities as well as biomarkers of the myocardial damage may help to improve the risk stratification of patients with asymptomatic severe AS and individualize strategy of treatment...
May 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28349887/atherosclerotic-plaque-metabolism-in-high-cardiovascular-risk-subjects-a-subclinical-atherosclerosis-imaging-study-with-18-f-naf-pet-ct
#10
Manuel de Oliveira-Santos, Miguel Castelo-Branco, Rodolfo Silva, Andreia Gomes, Nuno Chichorro, Antero Abrunhosa, Paulo Donato, João Pedroso de Lima, Mariano Pego, Lino Gonçalves, Maria João Ferreira
BACKGROUND AND AIMS: Atherosclerotic plaque molecular imaging with (18)F-sodium fluoride (NaF) in positron emission tomography with computed tomography (PET-CT) provides potential discrimination between active unstable microcalcification and established dormant calcification. We aimed to study (18)F-NaF atherosclerotic plaque uptake in high cardiovascular (CV) risk participants and its associations with CV risk factors, coronary calcium score and thoracic fat volume. METHODS: High CV risk hypertensive individuals from a single centre were prospectively scanned with (18)F-NaF-PET-CT in the coronary, aortic and carotideal arteries...
March 10, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28349280/quantification-of-temporal-changes-in-calcium-score-in-active-atherosclerotic-plaque-in-major-vessels-by-18-f-sodium-fluoride-pet-ct
#11
Yoshinobu Ishiwata, Tomohiro Kaneta, Shintaro Nawata, Ayako Hino-Shishikura, Keisuke Yoshida, Tomio Inoue
PURPOSE: Our aim was to assess whether (18)F-NaF PET/CT is able to predict progression of the CT calcium score. METHODS: Between August 2007 and November 2015, 34 patients (18 women, 16 men; age, mean ± standard deviation, 57.5 ± 13.9 years; age range 19-78 years) with malignancy or orthopaedic disease were enrolled in this study, with approximately 1-year follow-up data. Baseline and follow-up CT images were retrospectively evaluated for the presence of calcification sites in major vessel walls...
March 27, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28342038/coronary-artery-calcium-in-breast-cancer-survivors-after-radiation-therapy
#12
Richard A P Takx, Rozemarijn Vliegenthart, U Joseph Schoepf, Lothar R Pilz, Stefan O Schoenberg, Pamela B Morris, Thomas Henzler, Paul Apfaltrer
The purpose of the current study is to investigate whether breast cancer survivors after radiation therapy have a higher burden of coronary artery calcium as a potential surrogate of radiation-induced accelerated coronary artery disease. 333 patients were included. 54 patients underwent chest CT ≥ 6 months after the start of radiation therapy (radiation therapy group), while 279 patients had a CT scan either prior to or without undergoing radiation therapy (RT). Coronary artery calcium was quantified from CT by applying a threshold-based automated algorithm...
March 24, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28335909/erratum-to-2016-scct-str-guidelines-for-coronary-artery-calcium-scoring-of-noncontrast-noncardiac-chest-ct-scans-a-report-of-the-society-of-cardiovascular-computed-tomography-and-society-of-thoracic-radiology-j-cardiovasc-comput-tomogr-11-2017-74-84
#13
Harvey S Hecht, Paul Cronin, Michael J Blaha, Matthew J Budoff, Ella A Kazerooni, Jagat Narula, David Yankelevitz, Suhny Abbara
No abstract text is available yet for this article.
March 2017: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/28321775/presence-and-extent-of-cardiac-computed-tomography-angiography-defined-coronary-artery-disease-in-patients-presenting-with-syncope
#14
S Altintas, T Dinh, N G H M Marcks, M Kok, A J J Aerts, B Weijs, Y Blaauw, J E Wildberger, M Das, B L J H Kietselaer, H J G M Crijns
BACKGROUND: In syncope patients, presence of coronary artery disease (CAD) is associated with poor prognosis. However, data concerning CAD prevalence in syncope patients without known cardiovascular disease are lacking. Therefore, the aim of this study was to investigate presence and extent of CAD in syncope patients. METHODS: We included 142 consecutive patients presenting with syncope at the outpatient cardiology clinic who underwent coronary computed tomography (CT) angiography...
March 20, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28320601/coronary-atherosclerosis-in-indigenous-south-american-tsimane-a-cross-sectional-cohort-study
#15
Hillard Kaplan, Randall C Thompson, Benjamin C Trumble, L Samuel Wann, Adel H Allam, Bret Beheim, Bruno Frohlich, M Linda Sutherland, James D Sutherland, Jonathan Stieglitz, Daniel Eid Rodriguez, David E Michalik, Chris J Rowan, Guido P Lombardi, Ram Bedi, Angela R Garcia, James K Min, Jagat Narula, Caleb E Finch, Michael Gurven, Gregory S Thomas
BACKGROUND: Conventional coronary artery disease risk factors might potentially explain at least 90% of the attributable risk of coronary artery disease. To better understand the association between the pre-industrial lifestyle and low prevalence of coronary artery disease risk factors, we examined the Tsimane, a Bolivian population living a subsistence lifestyle of hunting, gathering, fishing, and farming with few cardiovascular risk factors, but high infectious inflammatory burden. METHODS: We did a cross-sectional cohort study including all individuals who self-identified as Tsimane and who were aged 40 years or older...
March 16, 2017: Lancet
https://www.readbyqxmd.com/read/28319943/femoral-neck-x-ray-absorptiometry-parameters-and-peripheral-quantitative-computer-tomography-tibial-cortical-density-predict-survival-in-dialysis-patients
#16
Natalie Yap, Phillip Wong, Stella McGinn, Maria-Liza Nery, Jean Doyle, Lynda Wells, Phillip Clifton-Bligh, Roderick J Clifton-Bligh
BACKGROUND: Low bone mineral density (BMD) is a known independent predictor of mortality in the general elderly population. However, studies in patients with end-stage renal disease (ESRD) are limited. The present study evaluated mortality during long-term follow-up in a population of patients having dialysis for ESRD, in whom BMD was also measured. METHODS: Fifty-eight patients with ESRD were recruited consecutively from a dialysis clinic and followed prospectively for 6 years...
March 21, 2017: Nephron
https://www.readbyqxmd.com/read/28293706/coronary-atherosclerotic-burden-vs-coronary-vascular-function-in-diabetic-and-nondiabetic-patients-with-normal-myocardial-perfusion-a-propensity-score-analysis
#17
Roberta Assante, Wanda Acampa, Emilia Zampella, Parthiban Arumugam, Carmela Nappi, Valeria Gaudieri, Mariarosaria Panico, Mario Magliulo, Christine M Tonge, Mario Petretta, Alberto Cuocolo
PURPOSE: To assess the relationship between coronary atherosclerotic burden and vascular function in diabetic and nondiabetic patients after balancing for coronary risk factors. METHODS: We studied 672 patients without overt coronary artery disease and normal myocardial perfusion on stress (82)Rb PET/CT imaging. To account for differences in baseline characteristics between diabetic patients and nondiabetic patients, we created a propensity score-matched cohort considering clinical variables and coronary risk factors...
March 14, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28292668/free-dna-precipitates-calcium-phosphate-apatite-crystals-in-the-arterial-wall-in%C3%A2-vivo
#18
Raphaël Coscas, Marie Bensussan, Marie-Paule Jacob, Liliane Louedec, Ziad Massy, Jeremy Sadoine, Michel Daudon, Catherine Chaussain, Dominique Bazin, Jean-Baptiste Michel
BACKGROUND AND AIMS: The arterial wall calcium score and circulating free DNA levels are now used in clinical practice as biomarkers of cardiovascular risk. Calcium phosphate apatite retention in the arterial wall necessitates precipitation on an anionic platform. Here, we explore the role of tissue-free DNA as such a platform. METHODS: The first step consisted of histological observation of samples from human and rat calcified arteries. Various stains were used to evaluate colocalization of free DNA with calcified tissue (alizarin red, fluorescent Hoechst, DNA immunostaining and TUNEL assay)...
April 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28281025/ct-myocardial-perfusion-imaging-current-status-and-future-perspectives
#19
Dong Hyun Yang, Young-Hak Kim
Computed tomography myocardial perfusion (CTP) combined with coronary computed tomography angiography (CCTA) may constitute a "1-stop shop" for the noninvasive diagnosis of hemodynamically significant coronary stenosis during a single CT examination. CTP shows high diagnostic performance and provides incremental value over CCTA for the detection of hemodynamically significant coronary stenosis in patients with a high Agatston calcium score or coronary artery stents. Future studies should determine the optimal protocol and clinical value of CTP for guiding revascularization strategy and prognostication...
March 9, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28279438/relation-of-epicardial-adipose-tissue-radiodensity-to-coronary-artery-calcium-on-cardiac-computed-tomography-in-patients-at-high-risk-for-cardiovascular-disease
#20
Bas T Franssens, Hendrik M Nathoe, Frank L J Visseren, Yolanda van der Graaf, Tim Leiner
Adipose tissue radiodensity detected by computed tomography (CT) is hypothesized to be associated with differences in adipose tissue composition which may contribute to the development of coronary atherosclerosis independent of epicardial adipose tissue volume. The aim of the present study is to quantify the relation between epicardial adipose tissue radiodensity and presence, distribution, and density of coronary artery calcium (CAC) in patients at high risk for cardiovascular disease. A total of 140 patients of the Secondary Manifestations of ARTerial disease (SMART) study underwent cardiac-CT angiography...
February 11, 2017: American Journal of Cardiology
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