Abstract:
:Magnetic resonance imaging (MRI) is a powerful tool which enables the visualization of anatomy and the assessment of many physiological aspects of organ function. MRI and magnetic resonance angiography and magnetic resonance spectroscopy will play critical roles in cardiac applications during the next millennium. Thus, it is important to have a basic understanding of the most important physical processes in MR--the generation of nuclear magnetic resonance signals and their transformation into images. A conceptual description of these processes is the primary focus of this article. Also discussed are some additional signal manipulations specific to the needs of cardiac MRI, a field readily identified as the most significant in modern MRI technology development.
journal_name
Pediatr Cardioljournal_title
Pediatric cardiologyauthors
Mulkern RV,Chung Tdoi
10.1007/s002469910003subject
Has Abstractpub_date
2000-01-01 00:00:00pages
5-17issue
1eissn
0172-0643issn
1432-1971journal_volume
21pub_type
杂志文章abstract::Rehospitalization following pediatric heart transplantation is common. However, existing data remain somewhat limited. Using a novel linkage between administrative and clinical databases, pediatric heart transplant (HT) recipients from 29 centers who survived to discharge were retrospectively reviewed to determine the...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-020-02326-x
更新日期:2020-03-01 00:00:00
abstract::We retrospectively investigated the effect of warfarin therapy in improving the clinical outcome of Kawasaki disease (KD) patients with giant coronary aneurysms (GAs). We followed 2350 KD patients from 1973 to 2004. The GAs (> or =8 mm in diameter) were diagnosed by coronary angiography. Sixty-eight patients (54 males...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-007-9132-9
更新日期:2008-03-01 00:00:00
abstract::Using the Doppler technique, this study compared the prenatal and postnatal flow patterns of an infant with cerebral arteriovenous (AV) malformation. Fetal right ventricular end-diastolic dimension was 1.7 cm with right ventricular ejection equaling 66% of the combined cardiac output. Diastolic flow was reversed in th...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/BF00801914
更新日期:1995-05-01 00:00:00
abstract::Cardiac surgery for congenital heart disease often necessitates a period of myocardial ischemia during cardiopulmonary bypass and cardioplegic arrest, followed by reperfusion after aortic cross-clamp removal. In experimental models, myocardial ischemia-reperfusion is associated with significant oxidative stress and ve...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-016-1345-3
更新日期:2016-04-01 00:00:00
abstract::Global ventricular response to exercise may be useful in follow-up of patients with residual right outflow tract lesions after congenital heart disease repair. In this context, impedance cardiography is considered accurate for stroke volume (SV) measurement during exercise testing, however, to date, only partial asses...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-017-1725-3
更新日期:2018-01-01 00:00:00
abstract::Since its first description in Japan 30 years ago, Kawasaki disease has been reported worldwide. Although an infectious etiology is suspected based on the epidemiology and clinical features, a causative agent has not been identified. The majority of the morbidity and mortality associated with this condition is attribu...
journal_title:Pediatric cardiology
pub_type: 杂志文章,评审
doi:10.1007/s002469900436
更新日期:1999-05-01 00:00:00
abstract:BACKGROUND:This study aimed to provide descriptive information about off-label treatment practice with clopidogrel in a pediatric population. METHODS:Patients less than 18 years of age prescribed clopidogrel between March 2002 and August 2005 were retrospectively identified at Children's Hospital, Boston. Data from th...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-008-9289-x
更新日期:2009-02-01 00:00:00
abstract::Congenital heart defects (CHDs) are the most prevalent of all birth defects and the leading cause of death in the first year of life. The molecular causes of most CHDs remain largely unknown. The LIM homeodomain transcriptor factor ISL1 is a marker for undifferentiated cardiac progenitor cells that give rise to both t...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-012-0578-z
更新日期:2013-04-01 00:00:00
abstract::Intravenous immunoglobulin (IVIG) administered in the acute stage of Kawasaki disease (KD) is the standard therapy. Few reports describe nonresponders to initial treatment with IVIG in KD, which remains the most consistent risk factor for coronary artery lesions (CALs). This study aimed to investigate whether the seru...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-013-0724-2
更新日期:2013-01-01 00:00:00
abstract::Sudden death accounts for up to 43% of all deaths in patients with familial dysautonomia (FD). The classic features of FD, namely, autonomic dysfunction, high blood pressure, and blood pressure labiality, are all risk factors for cardiac remodeling and hypertrophy. Myocardial remodeling and hypertrophy are independent...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-009-9497-z
更新日期:2009-11-01 00:00:00
abstract::While exercise stress testing (EST) is an important tool, little is known about its use for determining ischemia in patients with hypoplastic left heart syndrome (HLHS) and Fontan palliation. We sought to determine the frequency of ST segment changes during EST in HLHS patients after Fontan and examine results of furt...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-015-1312-4
更新日期:2016-03-01 00:00:00
abstract::Pulmonary arterial hypertension (PAH) is a major cause of morbidity and mortality among patients with congenital heart disease (CHD). This study was designed to determine biomarker levels in patients with PAH associated with CHD (PAH-CHD) and CHD patients without PAH and to investigate the relationship of these potent...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-012-0321-9
更新日期:2012-12-01 00:00:00
abstract::Echocardiography has previously been of limited use in visualizing the aorta in neonates and infants. Using a new technique--right parasternal scanning--the aortic arch and brachiocephalic vessels were studied in 50 children under 18 months of age. Complete visualization was accomplished in 47 patients including those...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/BF02426973
更新日期:1982-01-01 00:00:00
abstract::Home international normalized ratio (INR) monitors are being increasingly used for monitoring the adequacy of anticoagulation in children on long-term warfarin. Their safety and effectiveness in the home setting has not been fully established. The purpose of this study was to explore the safety and effectiveness of ho...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-009-9535-x
更新日期:2010-01-01 00:00:00
abstract::In 810 schoolchildren (aged 5-14 years) the prevalence of a grade 1-3/6 vibratory innocent heart murmur (VIHM) is 41%. Restricted to a grade 2 or 3 VIHM, the prevalence is 14%, decreasing from 21% in the age-class 5-6 years to 8% for children 13-14 years of age. The prevalence of a grade 3 VIHM is 1%. Together with a ...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/BF00798120
更新日期:1994-11-01 00:00:00
abstract::Congenitally corrected transposition of the great arteries is a rare anomaly that is thought to arise from a defect in looping of the primitive cardiac tube. Cor triatriatum is another rare congenital cardiac anomaly due to faulty incorporation of the common pulmonary vein into the left atrium. We present a rare case ...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-011-9912-0
更新日期:2011-04-01 00:00:00
abstract::Little has been published about specific problems that may occur during long-distance transports of newborn cardiac patients. During a 4-year period after centralization of pediatric heart surgery in Sweden, 286 transports were prospectively investigated. A majority (77.3%) of the transports were carried out by nonspe...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s002460010254
更新日期:2001-09-01 00:00:00
abstract::A varying degree of impairment of ventricular performance is observed over the long-term after surgery for a congenital heart defect (CHD). Impaired ventricular performance has been shown to be of prognostic value for increased risk of cardiovascular events in adult CHD patients. This emphasizes the importance of deli...
journal_title:Pediatric cardiology
pub_type: 杂志文章,评审
doi:10.1007/s00246-013-0802-5
更新日期:2014-01-01 00:00:00
abstract::There has been substantial controversy regarding treatment of congenital heart defects in infants with trisomies 13 and 18. Most reports have focused on surgical outcomes versus expectant treatment, and rarely there has been an effort to consolidate existing evidence into a more coherent way to help clinicians with de...
journal_title:Pediatric cardiology
pub_type: 杂志文章,评审
doi:10.1007/s00246-020-02444-6
更新日期:2020-10-01 00:00:00
abstract::Acute kidney injury (AKI) is a potential complication for children with congenital heart disease (CHD) after cardiopulmonary bypass (CPB) surgery. This study was designed to investigate and compare the predictive values of urinary biomarkers for AKI after CPB surgery in infants and young children and to determine the ...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-012-0563-6
更新日期:2013-04-01 00:00:00
abstract::The clinical and pathological features of primary pulmonary artery sarcoma in two children are reported. The first patient presented with right ventricular outflow obstruction and underwent successful surgical resection of his tumor. The second patient developed cardiac arrest following a relatively short period of sy...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/BF02078416
更新日期:1988-01-01 00:00:00
abstract::A ventriculoseptal defect (VSD) usually is present in patients with a double-outlet right ventricle. This report describes a case of double-outlet right ventricle with a completely shrouded inlet VSD and no interventricular shunting. This was associated with a severely regurgitant dysplastic mitral valve. The anatomy ...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-012-0483-5
更新日期:2013-01-01 00:00:00
abstract::B-type natriuretic peptide (BNP) reflects volume overload on left ventricle and pulmonary hypertension (PH) in patients with ventricular septal defect (VSD). Pulmonary vascular resistance (PVR) has been reported to correlate positively with BNP in VSD patients with various degrees of PH. We aimed to investigate the re...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-007-9037-7
更新日期:2008-01-01 00:00:00
abstract::A 9-year-old girl was admitted because she had had palpitations for 2 years. Her electrocardiogram revealed multifocal ectopic beats with left bundle branch morphology, sinoatrial block, and first- and second-degree atrioventricular blocks. Cross-sectional echocardiography demonstrated an enlarged left ventricle and f...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/BF02505810
更新日期:1996-01-01 00:00:00
abstract::The treatment of recurrent supraventricular tachycardia in a 3-week-old infant is described. Multiple doses of adenosine were used successfully to convert the dysrhythmia, without adverse effects or apparent tachyphylaxis. ...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s002469900222
更新日期:1997-11-01 00:00:00
abstract::Mammalian cardiomyocytes withdraw from the cell cycle soon after birth. This process is called terminal differentiation. The c-kit, a receptor tyrosine kinase, is expressed on cardiomyocytes immediately after birth but for only a few days. In mice with genetic c-kit dysfunction, adult cardiomyocytes are phenotypically...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-008-9366-1
更新日期:2009-07-01 00:00:00
abstract::This study aimed to assess the technical aspects of atrial septal defect (ASD) closure using the Amplatzer septal occluder (ASO) and the Gore Helex septal occluder (GHSO) for infants weighing less than 8 kg and to determine the safety, effectiveness, and near-to-intermediate-term outcome of the closure. The Mid-Atlant...
journal_title:Pediatric cardiology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00246-014-0905-7
更新日期:2014-10-01 00:00:00
abstract::Arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) is a heritable cardiomyopathy characterized by fibro-fatty replacement of right ventricular myocardium. Diagnostic criteria, established in 1994 and modified in 2010, are based on predominately adult manifestations of ARVC/D. The goal of this paper is ...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-015-1327-x
更新日期:2016-04-01 00:00:00
abstract::Requiring bilateral superior cavopulmonary anastomosis (bSCPA) instead of unilateral superior cavopulmonary anastomosis (uSCPA) could influence surgical timing and outcomes. We compared surgical timing and outcomes for patients who underwent uSCPA to those who underwent bSCPA through use of the Pediatric Heart Network...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-020-02527-4
更新日期:2021-01-08 00:00:00
abstract::A 5-year-old child with a Fontan circulation presented with acquired left pulmonary vein occlusion related to a previous surgical repair. We managed this lesion using a hybrid technique to perforate, dilate and stent the obstructed vessel. This approach should be considered when percutaneous access to the pulmonary ve...
journal_title:Pediatric cardiology
pub_type: 杂志文章
doi:10.1007/s00246-016-1376-9
更新日期:2016-06-01 00:00:00