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cardiovascular CT

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https://www.readbyqxmd.com/read/28814492/influence-of-arterial-stiffness-on-cardiovascular-outcome-in-patients-without-high-blood-pressure
#1
Keishi Ichikawa, Satoru Sakuragi, Takahiro Nishihara, Masahiro Tsuji, Atsushi Mori, Fumi Yokohama, Tadashi Wada, Daiji Hasegawa, Kenji Kawamoto, Machiko Tanakaya, Yusuke Katayama, Hiroshi Ito
OBJECTIVE: Although blood pressure (BP) is a major determinant of arterial stiffness, whether high pulse wave velocity (PWV) adversely influences cardiac parameters and cardiovascular (CV) outcome in patients without high BP remains unclear. METHODS: Outpatients without high BP (n=320), defined as systolic BP ≥140 mm Hg, were enrolled in this retrospective study. At baseline, all patients underwent echocardiography and multidetector CT to determine the coronary artery calcification (CAC) score...
August 16, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28811999/quantitative-analysis-of-epicardial-fat-volume-effects-of-scanning-protocol-and-reproducibility-of-measurements-in-non-contrast-cardiac-ct-vs-coronary-ct-angiography
#2
Luigia D'Errico, Francesco Salituri, Marco Ciardetti, Riccardo Favilla, Alessandro Mazzarisi, Giuseppe Coppini, Carlo Bartolozzi, Paoli Marraccini
BACKGROUND: Several studies have focused on the role of epicardial fat in the pathogenesis of cardiovascular disease (CVD). The main purpose of the study was to evaluate a computerized method for the quantitative analysis of epicardial fat volume (EFV) by non-contrast cardiac CT (NCT) for coronary calcium scan and coronary CT angiography (coronary CTA). METHODS: Thirty patients (61±12.5 years, 73% male, body mass index (BMI) =25.9±6.3 kg/m(2)) referred to our Institution for suspected coronary artery disease (CAD) underwent NCT and coronary CTA...
June 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28809582/iodixanol-versus-iopromide-at-coronary-ct-angiography-lumen-opacification-and-effect-on-heart-rhythm-the-randomized-isocor-trial
#3
Marisa M Lubbers, Marc Kock, André Niezen, Tjebbe Galema, Marcel Kofflard, Tobias Bruning, Henriette S Kooij, Hanneke van Valen, Marcel Dijkshoorn, Ronald Booij, Anthony Padmos, Alain Vogels, Ricardo P J Budde, Koen Nieman
Purpose To show that equal coronary lumen opacification can be achieved with iso- and low-osmolar contrast media when it is injected at the same iodine delivery rate with contemporary cardiac computed tomographic (CT) protocols and to investigate the cardiovascular effect of iso-osmolar contrast media and the image quality achieved. Materials and Methods Institutional review board approval and written informed consent were obtained for the Effect of Iso-osmolar Contrast Medium on Coronary Opacification and Heart Rhythm in Coronary CT Angiography, or IsoCOR, trial...
August 15, 2017: Radiology
https://www.readbyqxmd.com/read/28800625/variability-in-quantitative-analysis-of-atherosclerotic-plaque-inflammation-using-18f-fdg-pet-ct
#4
Karel-Jan D F Lensen, Alper M van Sijl, Alexandre E Voskuyl, Conny J van der Laken, Martijn W Heymans, Emile F I Comans, Mike T Nurmohamed, Yvo M Smulders, Ronald Boellaard
BACKGROUND: 18F-FDG-PET(/CT) is increasingly used in studies aiming at quantifying atherosclerotic plaque inflammation. Considerable methodological variability exists. The effect of data acquisition and image analysis parameters on quantitative uptake measures, such as standardized uptake value (SUV) and target-to-background ratio (TBR) has not been investigated extensively. OBJECTIVE: The goal of this study was to explore the effect of several data acquisition and image analysis parameters on quantification of vascular wall 18F-FDG uptake measures, in order to increase awareness of potential variability...
2017: PloS One
https://www.readbyqxmd.com/read/28790096/paraneoplastic-cerebellar-degeneration-secondary-to-ovarian-carcinosarcoma-a-cerebellar-conundrum
#5
Julian David Birch, Arup Sen, Katherine Rowland, Tatyana Viner
We present a case of an elderly female patient who presented with a 6-month history of progressive slurred speech, vertigo, unsteadiness and falls. She underwent an extensive battery of neurological and cardiovascular investigations, none of which demonstrated a diagnostic cause for her symptoms. She was referred to the stroke and neurology teams and was started on treatment for presumed anxiety. As her symptoms continued to progress, she was referred to the falls service. Following a multidisciplinary team discussion, she was reviewed by the consultant geriatrician who felt this may be due to a malignancy so the consultant geriatrician arranged blood testsand CT scan of her chest, abdomen and pelvis...
August 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28780575/subclinical-leaflet-thrombosis-after-transcatheter-aortic-valve-implantation
#6
REVIEW
Satoshi Nakatani
Although clinically significant valve thrombosis after transcatheter aortic valve implantation (TAVI) is rare, the incidence of subclinical leaflet thrombosis has been reported to be up to about 10%-15%. It is mostly found 1-3 months after procedure in any type of transcatheter heart valve. Leaflet thrombosis is detected by high-resolution CT in the form of limited valve opening/closure and hypoattenuated leaflet thickening. Transthoracic or transesophageal echocardiography is capable of detecting limitations of valve motion, leaflet thickening, increased flow velocity across the valve...
August 5, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28775206/clinical-molecular-imaging-of-chemokine-receptor-cxcr4-expression-in-atherosclerotic-plaque-using-68-ga-pentixafor-pet-correlation-with-cardiovascular-risk-factors-and-calcified-plaque-burden
#7
Desiree Weiberg, James T Thackeray, Guenter Daum, Jan M Sohns, Saskia Kropf, Hans-Jürgen Wester, Tobias L Ross, Frank M Bengel, Thorsten Derlin
The CXC-motif chemokine receptor 4 (CXCR4) represents a promising target for molecular imaging of different CXCR4+ cell types in cardiovascular diseases including atherosclerosis and arterial wall injury. The aim of this study was to assess the prevalence, pattern, and clinical correlates of arterial wall accumulation of (68)Ga-Pentixafor, a specific CXCR4 ligand for positron emission tomography (PET). Methods: Data of fifty-one patients who underwent (68)Ga-Pentixafor PET/computed tomography (PET/CT) for non-cardiovascular indications were retrospectively analyzed...
August 3, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28770213/positron-emission-tomography-determined-hyperemic-flow-myocardial-flow-reserve-and-flow-gradient-quo-vadis
#8
REVIEW
Thorsten M Leucker, Ines Valenta, Thomas Hellmut Schindler
Positron emission tomography/computed tomography (PET/CT) applied with positron-emitting flow tracers such as (13)N-ammonia and (82)Rubidium enables the quantification of both myocardial perfusion and myocardial blood flow (MBF) in milliliters per gram per minute for coronary artery disease (CAD) detection and characterization. The detection of a regional myocardial perfusion defect during vasomotor stress commonly identifies the culprit lesion or most severe epicardial narrowing, whereas adding regional hyperemic MBFs, myocardial flow reserve (MFR), and/or longitudinal flow decrease may also signify less severe but flow-limiting stenosis in multivessel CAD...
2017: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28769140/aortic-aneurysm-in-a-patient-with-syphilis-related-spinal-pain-and-paraplegia
#9
Daniel Brito de Araujo, Danise Senna Oliveira, Rodrigo Kraft Rovere, Umberto Lopes de Oliveira Filho
The tertiary stage of syphilis is nowadays extremely rare, showing predilection for the cardiovascular and nervous systems. A 57-year-old Caucasian man sought medical assistance due to back pain that evolved to paraplegia of the lower limbs. A thoracic CT scan demonstrated an important aneurysmatic lesion of the descending thoracic aorta causing erosion of the vertebral bodies and VDRL and FTA-abs positivity. Although rare, syphilitic aortitis, the hallmark of cardiovascular syphilis, should be considered in the differential diagnosis in patients with thoracic aneurysm when in the absence of classic risk factors for atherosclerosis, especially in cases that progress with erosion of vertebral bodies...
2017: Reumatologia
https://www.readbyqxmd.com/read/28762166/accuracy-and-specific-value-of-cardiovascular-3d-models-in-pediatric-ct-angiography
#10
Matthias Hammon, Oliver Rompel, Hannes Seuss, Sven Dittrich, Michael Uder, Andrè Rüffer, Robert Cesnjevar, Nicole Ehret, Martin Glöckler
Computed tomography (CT)-angiography is routinely performed prior to catheter-based and surgical treatment in congenital heart disease. To date, little is known about the accuracy and advantage of different 3D-reconstructions in CT-data. Exact anatomical information is crucial. We analyzed 35 consecutive CT-angiographies of infants with congenital heart disease. All datasets are reconstructed three-dimensionally using volume rendering technique (VRT) and threshold-based segmentation (stereolithographic model, STL)...
July 31, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28749732/lack-of-association-between-cystatin-c-and-different-coronary-atherosclerotic-manifestations
#11
Trine R Larsen, Oke Gerke, Axel C P Diederichsen, Jess Lambrechtsen, Flemming Hald Steffensen, Niels Peter Sand, Steen Antonsen, Hans Mickley
Cystatin C (CysC) is known to be related to cardiovascular disease (CVD), including the presence and severity of coronary artery disease (CAD) and future clinical events. In this study, the association between CysC levels and (1) coronary artery calcification (CAC) in asymptomatic individuals from the general population as well as (2) different subgroups of patients with suspected or definite acute myocardial infarction (MI) was investigated. CysC levels were measured in serum from asymptomatic individuals as part of a screening study for CAC using non-contrast cardiac CT scan (N = 1039) as well as in subgroups of hospitalized patients with a suspected MI (N = 769)...
July 27, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28749076/serum-and-gene-expression-levels-of-ct-1-il-6-and-tnf-%C3%AE-after-a-lifestyle-intervention-in-obese-children
#12
A Marti, L Morell-Azanza, T Rendo-Urteaga, S García-Calzón, A Ojeda-Rodríguez, N Martín-Calvo, M J Moreno-Aliaga, J A Martínez, M C Azcona-San Julián
BACKGROUND: Inflammation related molecules such as tumor necrosis factor-α (TNF-α), interleukin 6 (IL-6), and cardiotrophin-1 (CT-1) are highly expressed in obese individuals and could partly explain some comorbidities associated to obesity. In obese children, lifestyle interventions are able to lower inflammation and reduce cardiovascular risk factors associated with obesity. The aim of the present work was to study changes in inflammation-related molecules serum and peripheral blood mononuclear cells (PBMC) transcript levels after a 10-week lifestyle intervention in obese children and asses their potential association with glucose metabolism...
July 27, 2017: Pediatric Diabetes
https://www.readbyqxmd.com/read/28748423/impact-of-interstitial-lung-disease-on-mortality-of-patients-with-rheumatoid-arthritis
#13
Dam Kim, Soo-Kyung Cho, Chan-Bum Choi, Jung-Yoon Choe, Won Tae Chung, Seung-Jae Hong, Jae-Bum Jun, Young Ok Jung, Tae-Hwan Kim, Tae-Jong Kim, Hye-Soon Lee, Joo-Hyun Lee, Jisoo Lee, Shin-Seok Lee, Dae-Hyun Yoo, Bo Young Yoon, Jin Woo Song, Sang-Cheol Bae, Yoon-Kyoung Sung
To identify the prevalence of interstitial lung disease (ILD) in Korean patients with rheumatoid arthritis (RA) and assess its effect on mortality. A total of 3555 patients with RA, with chest X-ray or chest computed tomography (CT) data at enrollment were extracted from the KORean Observational study Network for Arthritis cohort, a nationwide prospective cohort for patients with RA in Korea. The patients were classified into two groups: (1) an ILD group by chest X-ray or chest CT scan, and (2) a non-ILD group by these modalities...
July 26, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28746470/relationship-between-ventilation-heterogeneity-and-exercise-intolerance-in-adults-with-sickle-cell-anemia
#14
A J Lopes, C L Marinho, U D Alves, C E A Gonçalves, P O Silva, E C Botelho, R Bedirian, A R Soares, M C P Maioli
Sickle cell anemia (SCA) causes dysfunction of multiple organs, with pulmonary involvement as a major cause of mortality. Recently, there has been growing interest in the nitrogen single-breath washout (N2SBW) test, which is able to detect ventilation heterogeneity and small airway disease when the results of other pulmonary function tests (PFTs) are still normal. Thus, the objectives of the present study were to assess the heterogeneity in the ventilation distribution in adults with SCA and to determine the association between the ventilation distribution and the clinical, cardiovascular, and radiological findings...
July 20, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28741057/the-role-of-angiography-in-the-congruence-of-cardiovascular-measurements-between-autopsy-and-postmortem-imaging
#15
Renaud Troxler, Costin Minoiu, Paul Vaucher, Katarzyna Michaud, Francesco Doenz, Kewin Ducrot, Silke Grabherr
INTRODUCTION: Postmortem CT angiography is the method of choice for the postmortem imaging investigations of the cardiovascular (CV) system. However, autopsy still remains the gold standard for CV measurement. Nevertheless, there are not any studies on CV measurements on the multi-phase postmortem angiography (MPMCTA) which includes comparisons with autopsy. Therefore, the aim of this study is to compare CV measurements between the native CT scan and the three phases of the MPMCTA to find out which of these modalities correlate the best with autopsy measurements...
July 24, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28740456/carotid-artery-stiffness-digital-endothelial-function-and-coronary-calcium-in-patients-with-essential-thrombocytosis-free-of-overt-atherosclerotic-disease
#16
Matjaz Vrtovec, Ajda Anzic, Irena Preloznik Zupan, Katja Zaletel, Ales Blinc
BACKGROUND: Patients with myeloproliferative neoplasms (MPNs) are at increased risk for atherothrombotic events. Our aim was to determine if patients with essential thrombocytosis (ET), a subtype of MPNs, free of symptomatic atherosclerosis, have greater carotid artery stiffness, worse endothelial function, greater coronary calcium and carotid plaque burden than control subjects. PATIENTS AND METHODS: 40 ET patients without overt vascular disease, and 42 apparently healthy, age and sex-matched control subjects with comparable classical risk factors for atherosclerosis and Framingham risk of coronary disease were enrolled...
June 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/28739753/application-of-ultrasound-guided-core-needle-biopsy-in-the-diagnosis-of-t3-or-t4-stage-laryngeal-and-hypopharyngeal-cancer
#17
Yunqiang Wang, Dajian Li, Ruihua Liu, Chuanliang Jia, Aihua Jiang, Yayun Lv, Shufen Xu, Hua Zhang, Xiaoli Cao, Xicheng Song
AIM: To study the value of ultrasound-guided core needle biopsy (CNB) in the diagnosis of T3 or T4 stage laryngeal and hypopharyngeal cancer, which is difficult by routine methods. PATIENTS AND METHODS: Nineteen cases of T3 or T4 stage laryngeal or hypopharyngeal carcinoma with abnormal pharyngeal sensitivity, severe dyspnea, submucous cancer recurrence, cardiovascular and pulmonary dysfunction were reviewed retrospectively from October 2012 to October 2014 in the Yuhuangding Hospital of Qingdao University...
August 2017: Anticancer Research
https://www.readbyqxmd.com/read/28738829/rare-association-of-two-cardiovascular-malformations-successfully-corrected-in-a-single-surgery-a-case-report
#18
Fu-Yang Mei, Zhi-Xuan Bai, Zhi-Bin Hu, Bing Zhou, Yong Cui
BACKGROUND: Partial anomalous pulmonary venous connection (PAPVC) without an atrial septal defect (ASD) associated with coarctation of the aortic arch is a rare congenital cardiac anomaly. This rare combination is only described in a few studies; none report the correction of these two malformations in a single surgery. CASE PRESENTATION: A 5-year-old girl was admitted to our hospital because the echocardiography revealed coarctation of the aortic arch; this diagnosis was confirmed by computed tomography (CT), which also showed her left superior pulmonary vein draining into the vertical vein without ASD (Fig...
July 24, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28734628/adrenergic-receptor-genotypes-influence-postoperative-outcomes-in-infants-in-the-single-ventricle-reconstruction-trial
#19
Ronand Ramroop, George Manase, Danny Lu, Dorin Manase, Shan Chen, Richard Kim, Teresa Lee, William T Mahle, Kimberly McHugh, Mike Mitchell, Martin Tristani-Firouzi, Stephanie B Wechsler, Nicole S Wilder, Victor Zak, Myriam Lafreniere-Roula, Jane W Newburger, J William Gaynor, Mark W Russell, Seema Mital
OBJECTIVES: Adrenergic receptor (ADR) genotypes have been associated with adverse outcomes in heart failure. Our objective was to evaluate the association of ADR genotypes with post-Norwood outcomes in infants with hypoplastic left heart syndrome (HLHS). METHODS: Infants with HLHS participating in the Pediatric Heart Network Single-Ventricle Reconstruction Trial underwent genotyping for 4 single-nucleotide polymorphisms in 3 ADR genes: ADRB1_231A/G, ADRB1_1165G/C, ADRB2_5318C/G, and ADRA2A_2790C/T...
June 24, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28734021/effect-of-fixed-value-positive-end-expiratory-pressure-valves-on-canine-thoracic-volume-and-atelectasis
#20
A Allison, X Huizing, C Jolliffe, I Schaafsma
OBJECTIVES: The objective of this study was to investigate whether a fixed 10 cm H2 O positive end-expiratory pressure valve would increase the aeration of, and reduce atelectasis formation in, the lungs after induction of anaesthesia in dogs undergoing thoracic CT. MATERIALS AND METHODS: 28 dogs were paired based on breed, bodyweight and body condition score and then randomly allocated to either Group Z (0 cm H2 O) or Group P (10 cm H2 O positive end-expiratory pressure valve) immediately after the induction of anaesthesia...
July 22, 2017: Journal of Small Animal Practice
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