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https://www.readbyqxmd.com/read/29655572/3d-modelling-and-printing-technology-to-produce-patient-specific-3d-models
#1
Nicolette S Birbara, James M Otton, Nalini Pather
BACKGROUND: A comprehensive knowledge of mitral valve (MV) anatomy is crucial in the assessment of MV disease. While the use of three-dimensional (3D) modelling and printing in MV assessment has undergone early clinical evaluation, the precision and usefulness of this technology requires further investigation. This study aimed to assess and validate 3D modelling and printing technology to produce patient-specific 3D MV models. METHODS: A prototype method for MV 3D modelling and printing was developed from computed tomography (CT) scans of a plastinated human heart...
November 10, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29652277/factors-associated-with-delayed-cardiac-tamponade-after-cardiac-surgery
#2
Edgar Hernández Leiva, Marisol Carreño, Fernando Rada Bucheli, Alberto Cadena Bonfanti, Juan Pablo Umaña, Rodolfo José Dennis
Context: Cardiac tamponade (CT) following cardiac surgery is a potentially fatal complication and the cause of surgical reintervention in 0.1%-6% of cases. There are two types of CT: acute, occurring within the first 48 h postoperatively, and subacute or delayed, which occurs more than 48 h postoperatively. The latter does not show specific clinical signs, which makes it more difficult to diagnose. The factors associated with acute CT (aCT) are related to coagulopathy or surgical bleeding, while the variables associated with subacute tamponade have not been well defined...
April 2018: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/29651545/extracardiac-18-f-florbetapir-imaging-in-patients-with-systemic-amyloidosis-more-than-hearts-and-minds
#3
T Wagner, J Page, M Burniston, A Skillen, J C Ross, R Manwani, D McCool, P N Hawkins, Ashutosh D Wechalekar
PURPOSE: 18 F-Florbetapir has been reported to show cardiac uptake in patients with systemic light-chain amyloidosis (AL). This study systematically assessed uptake of 18 F-florbetapir in patients with proven systemic amyloidosis at sites outside the heart. METHODS: Seventeen patients with proven cardiac amyloidosis underwent 18 F-florbetapir PET/CT imaging, 15 with AL and 2 with transthyretin amyloidosis (ATTR). Three patients had repeat scans. All patients had protocolized assessment at the UK National Amyloidosis Centre including imaging with 123 I-serum amyloid P component (SAP)...
April 12, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29651533/spatial-orientation-of-coronary-arteries-and-its-implication-for-breast-and-thoracic-radiotherapy-proposing-coronary-strip-as-a-new-organ-at-risk
#4
Anusheel Munshi, Nilaxi Khataniar, Biplab Sarkar, Moti Lal Bera, Bidhu Kalyan Mohanti
OBJECTIVES: Radiotherapy for breast cancer has been associated with various side effects including cardiac sequelae. Our study aimed to define the spatial arc of spread of coronary vessels in a radian angle. MATERIALS AND METHODS: We analysed the records of 51 CT coronary angiographies done in our hospital from January 2016 to July 2016. Left anterior descending (LAD) and right coronary (RC) were contoured for each patient. In each axial section, the radial spread of each artery was noted...
April 12, 2018: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/29650397/assessment-of-five-different-probes-for-lung-ultrasound-in-critically-ill-patients-a-pilot-study
#5
Xavier Bobbia, Margaux Chabannon, Thierry Chevallier, Jean Emmanuel de La Coussaye, Jean Yves Lefrant, Sarah Pujol, Pierre-Géraud Claret, Laurent Zieleskiewicz, Claire Roger, Laurent Muller
INTRODUCTION: The present study was aimed at comparing the diagnosis concordance of five echo probes of lung ultrasound (LUS) with CT scans in intensive care and emergency patients with acute respiratory failure. MATERIALS: This prospective, observational, pilot study involved 10 acute patients in whom a thoracic CT scan was performed. An expert performed an LUS reference exam using five different probes: three probes with a high-quality conventional echo machine (cardiac phased-array probe, abdominal convex probe, linear probe) and two probes (cardiac and linear) with a pocket ultrasound device (PUD)...
April 3, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29650121/prediction-of-abnormal-myocardial-relaxation-from-signal-processed-surface-ecg
#6
Partho P Sengupta, Hemant Kulkarni, Jagat Narula
BACKGROUND: Myocardial relaxation is impaired in almost all cases with left ventricular diastolic dysfunction (LVDD) and is a strong predictor of cardiovascular and all-cause mortality. OBJECTIVES: This study investigated the feasibility of signal-processed surface electrocardiography (spECG) as a diagnostic tool for predicting the presence of abnormal cardiac muscle relaxation. METHODS: A total of 188 outpatients referred for coronary computed tomography (CT) angiography underwent an echocardiogram for assessment of LVDD...
April 17, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29649065/ageing-effect-on-18f-dopa-and-123i-mibg-uptake-a-cross-sectional-study
#7
Agostino Chiaravalloti, Gaetano Barbagallo, Maria Ricci, Pasqualina Sannino, Georgios Karalis, Francesco Ursini, Orazio Schillaci
BACKGROUND: The aim of this study was to investigate the relationship between age and uptake of fluorine-18-L-dihydroxyphenylalanine (F-DOPA) in the brain and myocardial uptake of iodine-123-metaiodobenzylguanidine (I-MIBG) in normal adult participants. PARTICIPANTS AND METHODS: To this end, a total of 72 healthy participants were enroled. Of these, 37 individuals (male, 21; female, 16; mean age: 60±12 years; age range: 38-85 years) underwent F-DOPA PET/CT, whereas 35 individuals (male, 19; female, 16; mean age: 61±17 years; age range: 17-87 years) underwent I-MIBG scintigraphy...
April 11, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29630121/the-additional-role-of-18f-fdg-pet-ct-in-prosthetic-valve-endocarditis
#8
S Nuvoli, V Fiore, S Babudieri, S Galassi, P Bagella, P Solinas, A Spanu, G Madeddu
OBJECTIVE: The purpose of the present review is an update on the diagnosis of prosthetic valve endocarditis (PVE), evaluating the additional value of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) to the standard modified DUKE criteria on which for a long time is based the diagnostic strategy of the disease. MATERIALS AND METHODS: We did a comprehensive research on the studies reported in the literature and regarding the employment of 18F-FDG PET/CT in the early diagnosis of PVE in patients with suspected disease...
March 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29629254/multimodality-imaging-and-clinical-significance-of-congenital-ventricular-outpouchings-recesses-diverticula-aneurysms-clefts-and-crypts
#9
REVIEW
Alberto Cresti, Pierpaolo Cannarile, Elena Aldi, Marco Solari, Bruno Sposato, Luca Franci, Ugo Limbruno
The high spatial resolution of cardiac computed tomography (CT) and cardiac magnetic resonance (CMR) permit the diagnosis of congenital ventricular outpouchings (CVOs), including congenital ventricular diverticula (CVD), congenital ventricular aneurysms (CVA), clefts, and crypts. A unique classification has not been established, and these terms are used interchangeably with confounding terminology. Moreover, their significance is not univocal. A research was performed using PubMed on six subjects: (1) congenital left ventricular outpouchings; (2) congenital ventricular diverticulum; (3) congenital ventricular aneurysm; (4) ventricular clefts; (5) ventricular crypts; and (6) ventricular crevices...
January 2018: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/29628189/development-of-a-congenital-cardiovascular-computed-tomography-imaging-registry-rationale-and-implementation
#10
B Kelly Han, Susan Casey, Dawn Witt, Jonathon Leipsic, Andrew Crean, Edward Nicol, Thomas Semple, James Shambrook, Ashwin Prakash, Puja Banka, Ross Garberich, Cynthia Rigsby, Anthony Hlavacek, John Lesser
BACKGROUND: The cumulative exposure and risk of anesthesia, vascular access, contrast agents and radiation is emerging as a significant lifelong burden in patients with congenital heart disease (CHD). Latest generation computerized tomographic (CT) scanners are increasingly used for high resolution cardiovascular imaging and have both hardware and post processing radiation dose reduction strategies that can be implemented. Currently, these dose reduction strategies are not uniformly applied and there is a large variability in radiation dose used for the performance of CT in CHD...
March 16, 2018: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29627375/longer-diabetes-duration-reduces-myocardial-blood-flow-in-remote-myocardium-assessed-by-dynamic-myocardial-ct-perfusion
#11
Nobuo Tomizawa, Yusuke Fujino, Masaru Kamitani, Shengpu Chou, Kodai Yamamoto, Shinichi Inoh, Takeshi Nojo, Sunao Nakamura
AIMS: To investigate the relationship of type 2 diabetes duration and myocardial blood flow (MBF) assessed by myocardial CT perfusion. MATERIALS AND METHODS: We prospectively included 140 patients with type 2 diabetes who underwent dynamic myocardial CT perfusion exam. MBF of the remote myocardium was calculated using the deconvolution technique and the Voronoi method. The relationships of MBF and diabetic duration, diabetic complications, conventional risk factors, coronary calcium, and coronary stenosis were assessed by logistic regression analysis...
March 16, 2018: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/29623849/cardiac-imaging-in-systemic-diseases-what-the-clinician-should-know
#12
Cesar J Herrera, Pamela Pina Santana, Jorge Martinez, Mario J Garcia
IMPORTANCE: Systemic diseases that affect the cardiovascular system constitute a diagnostic and therapeutic challenge for all specialists involved; imaging tools along with clinical suspicion play an essential role in their evaluation. These entities share neurological, immunological, renal, hematologic, oncologic, infectious and endocrine processes, all of which may have associated cardiac involvement. OBSERVATIONS: Recent advances in cardiac ultrasound, computed tomography (CT), cardiac magnetic resonance (CMR) and nuclear scintigraphy have impacted the management of these conditions when involving the heart since they provide valuable anatomical and functional information while avoiding the use of invasive techniques...
April 5, 2018: Current Cardiology Reviews
https://www.readbyqxmd.com/read/29622979/anomalous-origin-of-left-main-coronary-artery-from-the-right-sinus-of-valsalva-presenting-as-non-st-elevation-acute-coronary-syndrome-a-case-report
#13
Anish Hirachan, Arun Maskey, Gopi Prasad Hirachan, Madhu Roka
Congenital anomalies of the coronary arteries are a cause of sudden cardiac death. Of the known anatomic variants, anomalous origination of a coronary artery from an opposite sinus of Valsalva (ACAOS) remains a major clinical issue and a challenging condition to treat. Congenital coronary anomalies are likely to be under-recognized, as completing an anatomic assessment in a very large portion of the population would seem unfeasible. However, we present a case report with image of a 49 year old male presented with acute non-ST elevation ACS for which he underwent diagnostic angiography of the coronary system which revealed a common origin of both right and left main coronary artery from right sinus of Valsalva with significant obstructive lesion in the mid segment of right coronary artery...
September 2017: The Egyptian heart journal: (EHJ): official bulletin of the Egyptian Society of Cardiology
https://www.readbyqxmd.com/read/29621274/phenotype-and-biochemical-heterogeneity-in-late-onset-fabry-disease-defined-by-n215s-mutation
#14
L Lavalle, A S Thomas, B Beaton, H Ebrahim, M Reed, U Ramaswami, P Elliott, A B Mehta, D A Hughes
BACKGROUND: Fabry disease (FD) results from X-linked inheritance of a mutation in the GLA gene, encoding for alpha galactosidase A, and is characterized by heterogeneous clinical manifestations. Two phenotypes have been described "Classic" and "late onset" which cannot be predicted exclusively by genotype. The latter has been considered an attenuated form of the disease often affecting a single organ system commonly the heart. Recent studies have demonstrated that cardiac outcomes are similar in patients with classic and late onset mutations...
2018: PloS One
https://www.readbyqxmd.com/read/29618325/chylopericardium-in-a-child-with-iga-nephropathy-a-case-report
#15
Yu-Lin Kang, Yun Cui, Ying Wu, Shen Hao, Xin-Yu Kuang, Yu-Cai Zhang, Wen-Yan Huang, Guang-Hua Zhu
BACKGROUND: Chylopericardium effusion is characterized by the accumulation of milky effusion in the pericardium. It is often idiopathic but it can be secondary to trauma, chest radiation, tuberculosis and malignancy. If cardiac tamponade ensues, it becomes life-threatening. Herein we describe chylopericardium tamponade in a child with IgA nephropathy. To the best of our knowledge, this is the first reported case of chylopericardium tamponade in IgA nephropathy. CASE PRESENTATION: A 6 years old boy with IgA nephropathy presented with dyspnea, orthopnea, pretibial pitting edema, ascites and fever...
April 5, 2018: BMC Pediatrics
https://www.readbyqxmd.com/read/29617993/navigation-of-lead-extraction-is-it-possible-impact-of-preprocedural-electrocardiogram-triggered-computed-tomography-on-navigation-of-lead-extraction
#16
Julia Vogler, Simon Pecha, Ryan Azarrafiy, Liesa Castro, Florian Deuschl, Clemens Spink, Matthias Linder, Ulrike von Hehn, Stephan Willems, Hermann Reichenspurner, Nils Gosau, Samer Hakmi
OBJECTIVES: As the number of transvenous lead extractions continues to increase, preprocedural protocols for this procedure must be assessed. The objective of this study was to determine whether an electrocardiogram (ECG)-triggered computed tomography (Et-CT) with three-dimensional (3D) reconstructions could aid lead extractors in choosing the optimal tools to improve procedural success and avoid complications. METHODS: In this study, 31 patients scheduled for transvenous lead extraction underwent a preprocedural Et-CT between January 2016 and May 2017...
March 30, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29610956/prognostic-role-of-serial-quantitative-evaluation-of-18-f-fluorodeoxyglucose-uptake-by-pet-ct-in-patients-with-cardiac-sarcoidosis-presenting-with-ventricular-tachycardia
#17
Daniele Muser, Pasquale Santangeli, Simon A Castro, Jackson J Liang, Andres Enriquez, Thomas J Werner, Gaetano Nucifora, Silvia Magnani, Tatsuya Hayashi, Erica S Zado, Fermin C Garcia, David J Callans, Sanjay Dixit, Benoit Desjardins, Francis E Marchlinski, Abass Alavi
BACKGROUND: Positron emission tomography (PET) with18 F-fluorodeoxyglucose (FDG) has shown to be useful in diagnosis, staging and monitoring of cardiac sarcoidosis (CS) but its interpretation is not standardized. OBJECTIVES: We sought to investigate the clinical impact of serial quantitative FDG uptake analysis in patients with CS presenting with ventricular tachycardia (VT) treated by catheter ablation (CA). METHODS: We followed 20 patients (51 ± 9 years, 70% males) with CS and VT who underwent CA, with 92 serial FDG-PET scans (3-10 per patient)...
April 2, 2018: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29607318/calcitriol-prevents-cardiovascular-repercussions-in-puromycin-aminonucleoside-induced-nephrotic-syndrome
#18
Fernandes-Cerqueira Cátia, Quelhas-Santos Janete, Sampaio-Maia Benedita, Simões-Silva Liliana, Soares-Silva Isabel, Roncon-Albuquerque Roberto, Pestana Manuel
Puromycin aminonucleoside-induced nephrotic syndrome (PAN-NS) is characterized by cardiac remodeling and increased local inflammatory activity. Patients with NS and animal models of NS have vitamin D3 deficiency. The aim of the present study was to evaluate the influence of calcitriol on cardiac remodeling and local inflammatory state in PAN-NS rat model. Male Sprague-Dawley rats were injected with PAN or vehicle on day 0. PAN and control rats were divided into two subgroups for the administration of calcitriol (PAN-D and Ct-D groups) or the vehicle (PAN-V and Ct-V groups) during 21 days...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29601265/coronary-artery-fistulas-pathophysiology-imaging-findings-and-management
#19
Gabin Yun, Tae Hyun Nam, Eun Ju Chun
Coronary artery fistulas (CAFs) are abnormal communications of coronary arteries whereby venous circuits bypass the normal capillaries within the myocardium. CAFs are rare, and most affected patients are asymptomatic. However, these fistulas are the most common coronary artery anomalies that can alter coronary hemodynamic parameters. Although most CAFs are asymptomatic in young patients, symptoms and complications become more frequent with increasing age. CAFs are characterized by variable clinical manifestations that are based on the size, origin, and drainage site of the fistula...
March 27, 2018: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29600103/report-of-a-lung-carcinoma-extended-to-the-left-atrium-through-pulmonary-vein
#20
Federico Cipriano, Lycio U Dessoti, Alfredo José Rodrigues, Walter Vilella de Andrade Vicente, Fernando Chahud, Paulo Roberto B Evora
Lung cancers may extend along or grow through the pulmonary veins to invade or lie within the left atrium (LA). A 62-year-old man, previously healthy, presented with 1-month ventilatory-independent right hemithorax back pain, dry cough and large effort dyspnea. He also referred weight loss of 12 kg in 10 months and denied hemoptysis. As antecedents, he smoked for 40 years and moderate daily alcoholism. On physical examination, the patient was in good general condition, hydrated and regular respiration at rest [blood pressure (BP) =120/80 mmHg; heart rate (HR) =90 bpm; respiratory rate (RR) =16 rpm]...
January 2018: Journal of Thoracic Disease
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