نتایج جستجو برای: heart mri t2

تعداد نتایج: 511078  

2016
Masoumeh Kahnooji Hamid Reza Rashidinejad Mohammad Shahram Yazdanpanah Nahid Azdaki Ahmad Naghibzadeh-Tahami

BACKGROUND The assessment of cardiac iron overload in thalassemia major has been considered as an important predictive factor of heart injury. The magnetic resonance imaging (MRI)-derived relaxation time parameter (T2*) varies inversely with iron level, and elevated myocardial iron levels by T2* are associated with depressed left ventricular (LV) ejection fraction (EF). We compared echocardiogr...

Journal: :BMJ case reports 2017
Hazrini Abdullah Nyazirah Abdul Wahab Khatijah Abu Bakar

Abdullah H, et al. BMJ Case Rep 2017. doi:10.1136/bcr-2017-219793 Description Conjoined twins are very rare with incidence of 1 per 250 000 live births. Fetal MRI is an important adjunct to ultrasound particularly in evaluation of complex fetal anomalies and organ positions. 3 This case report illustrates our first experience in MRI fetal of conjoined twins with the current available sequences....

Journal: :The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation 2001
P Y. Marie J P. Carteaux J M. Escanye O Claudon N David S Mattei N Hassan N Danchin G Karcher A Bertrand J P. Villemot

OBJECTIVES This study aimed to determine whether the myocardial T2 relaxation time, determined using a black-blood magnetic resonance imaging (MRI) sequence, could predict acute heart transplant rejection. BACKGROUND The use of black-blood MRI sequences allows suppression of the confusing influence of blood signal when myocardial T2 is calculated to detect myocardial edema. METHODS A total ...

2015
Antonella Meloni Mari Giovanna Neri Maria Chiara Resta Massimiliano Missere Antonino Vallone Vincenzo Positano Silvia Macchi Crocetta Argento Daniele De Marchi Alessia Pepe

Results Three groups of patients were identified: 27 patients (13 females, mean age 40.12±10.31 years) treated with desferioxamine (DFO mean dosage 37.52±8.69 mg/kg/ die), 23 patients (14 females, mean age 34.73±10.67 years) treated with deferiprone (DFPdosage 71.70 ±14.46mg/kg/die) and 14 patients (9 females, mean age 36.63±10.92 years) treated with deferasirox (DFX mean dosage 27.75±5.04 mg/k...

Journal: :international journal of hematology-oncology and stem cell research 0
mozhgan hashemieh imam hossein medical center, shahid beheshti university of medical sciences, tehran, iran. mitra radfar imam hossein medical center, shahid beheshti university of medical sciences, tehran, iran. azita azarkeivan research center of iranian blood transfusion organization, thalassemia clinic, tehran, iran seyed mohammad taghi hosseini tabatabaei imam hossein medical center, department of pediatric nephrology, shahid beheshti university of medical sciences, tehran, iran sedigheh nikbakht pediatrition, yasuj, iran mehdi yaseri school of public health and public health research institute, tehran university of medical sciences, tehran, iran

background: in recent years, the success in management of thalassemic patients, has allowed for some previously unrecognized complications including renal abnormalities to emerge. this prospective study aimed to investigate kidney iron overload by means of mri t2* and also renal function based on laboratory tests for early markers of glomerular and tubular dysfunction among adult iranian transf...

Sanei Taheri M

Background: To assess MRI in diagnosing endometriotic lesions, emphasizing T2*weighted imaging efficacy. Materials and Methods: This prospective study of 48 females (22-38 years, average 29.6) clinically suspected of endometriosis from September 2009 to April 2012. MRI was performed with a 1.5 T imager (Siemens) with a body array coil. T1, T2 and T2* weighted (2D-FLASH) sequences were obtained ...

2015
Laurent Bonnemains Aboubaker Cherifi Nicolas Girerd Freddy Odille Jacques Felblinger

INTRODUCTION Patients with heart transplant are screened for silent graft rejection by recurrent endomyocardial biopsies. MRI can detect the presence of oedema non-invasively by quantitatively measuring changes of the transverse relaxation time T2 in the myocardium. Several monocentric studies have shown that T2 quantification could help detect graft rejection in a less invasive way. DRAGET is ...

Journal: :Journal of magnetic resonance imaging : JMRI 2009
Anna Ramazzotti Alessia Pepe Vincenzo Positano Giuseppe Rossi Daniele De Marchi Maria Gabriella Brizi Antongiulio Luciani Massimo Midiri Giuseppina Sallustio Gianluca Valeri Vincenzo Caruso Michele Centra Paolo Cianciulli Vincenzo De Sanctis Aurelio Maggio Massimo Lombardi

PURPOSE To assess the transferability of the magnetic resonance imaging (MRI) multislice multiecho T2(*) technique for global and segmental measurement of iron overload in thalassemia patients. MATERIALS AND METHODS Multiecho T2(*) sequences were installed on six MRI scanners. Five healthy subjects (n = 30) were scanned at each site; five thalassemia major (TM) patients were scanned at the re...

Journal: :asian journal of sports medicine 0
yoshikazu shimada jfa medical center, fukushima, japan; :477 nakauchi, toride-shi, ibaraki 300-1543, japan. daisuke shimao jfa medical center, fukushima, japan; department of radiological sciences, ibaraki prefectural university of health sciences, ibaraki, japan jiro kobayashi jfa medical center, fukushima, japan chikako nakahori jfa medical center, fukushima, japan mariko shimada jfa academy fukushima, fukushima, japan hiroo fujimoto jfa academy fukushima, fukushima, japan

purpose t1wi (t1 weighted image) was acquired in order to grade bone fusion following the studies by fifa (federation internationale de football associations). research using images other than t1wi has not been reported. the aim of this study is to evaluate the grade of epiphyseal fusion by t2* weighted images (t2*wi) and to investigate new findings on t2*wi as compared with t1wi. methods a tot...

2014
El-Sayed H Ibrahim Andrew W Bowman

Background Iron toxicity is key factor for tissue damage in ironoverloaded patients, with induced heart failure as the main cause of death. T2*-weighted MRI has been established as the method of choice for evaluating iron-content with strong correlation with biopsy, where T2* < 20 ms and T2* < 10 ms at 1.5T indicate iron overload and severe iron overload, respectively. Recently-introduced duale...

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