MRI Research Today is a free monthly online journal that collates and summarizes the latest research about MRI, including details on magnetic resonance imaging, neuroimaging, brain tumors. | ||||||
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Prenatal diagnosis of schizencephaly with 2D-3D sonography and MRI.Gedikbasi A, Yildirim G, Saygi S, Arslan O, Gul A, Ceylan Y Maternal and Fetal Unit, Istanbul Bakirkoy Women and Children Hospital, Istanbul, Turkey. We report a case of schizencephaly diagnosed prenatally at 23 weeks of gestational age with two-dimensional (2D) and three-dimensional (3D) sonography and fetal brain MRI, confirmed by autopsy. The diagnostic method of choice is 2D transabdominal and transvaginal sonography, whereas additional 3D sonography and MRI may provide a better understanding of the pathology and related findings. (c) 2009 Wiley Periodicals, Inc. J Clin Ultrasound, 2009. Published 18 June 2009 in J Clin Ultrasound. Articles on MRI published 18 June 2009: Micro MRI of the mouse brain using a novel 400 MHz cryogenic quadrature RF probe. NMR Biomed. The increasing number of mouse models of human disease used in biomedical research applications has led to an enhanced interest in non-invasive imaging of mice, e.g. using MRI for phenotyping. However, MRI of small rodents puts high demands on the sensitivity of data acquisition. This requirement can be addressed by using cryogenic radio-frequency (RF) detection devices. The aim of this work was to investigate the in vivo performance of a 400 MHz cryogenic transmit/receive RF probe (CryoProbe) ... [Abstract] [Full-text] Contrast in magnetic resonance imaging (MRI) arises from changes in the intensity of the proton signal of water between voxels (essentially, the 3D counterpart of pixels). Differences in intervoxel intensity can be significantly enhanced with chemicals that alter the nuclear magnetic resonance (NMR) intensity of the imaged spins; this alteration can occur by various mechanisms. Paramagnetic lanthanide(III) complexes are used in two major classes of MRI contrast agent: the well-established class ... [Abstract] [Full-text] Articles on MRI published 17 June 2009: Enzyme replacement therapy in adult-onset glycogenosis II: Is quantitative muscle MRI helpful? Muscle Nerve, 40(1): 122-125. Although it has been shown that muscle magnetic resonance imaging (MRI) improves the phenotypic characterization of patients with neuromuscular disorders and allows accurate quantification of muscle and adipose tissue distribution, to date quantitative MRI has not been used to assess the therapeutic response in clinical trials of neuromuscular diseases. We discuss quantitative MRI findings after a 6-month course of enzyme replacement therapy administered to nine patients with adult-onset ... [Abstract] [Full-text] Perforating arteries originating from the posterior communicating artery: a 7.0-Tesla MRI study. Eur Radiol. The aim of this study was to investigate the ability of time-of-flight (TOF) magnetic resonance (MR) angiography at 7.0 Tesla to show the perforating branches of the posterior communicating artery (PCoA), and to investigate the presence of such visible perforating branches in relation to the size of the feeding PCoA. The secondary aim was to visualise and describe the anterior choroidal artery and the perforating branches of the P1-segment of posterior cerebral artery (P1). Forty-six healthy ... [Abstract] [Full-text] Lesion size changes in osteonecrosis of the femoral head: a long-term prospective study using MRI. Int Orthop. Osteonecrosis of the femoral head (ONFH) is one of the intractable diseases. It is controversial whether the lesion size assessed by magnetic resonance imaging (MRI) can change over time without any operative treatment. In this study, we used MRI to observe the lesion size changes of ONFH induced by corticosteroid administration in severe acute respiratory syndrome (SARS) patients. The study included 51 SARS patients (84 hips) with early-stage ONFH who did not receive any operative treatment ... [Abstract] [Full-text] Articles on MRI published 15 June 2009: The role of pre-treatment MRI in established cases of slipped capital femoral epiphysis. Eur J Radiol, 70(3): 570-8. BACKGROUND: Slipped capital femoral epiphysis (SCFE) often results in functional impairment and premature osteoarthritis despite surgical treatment. Treatment decisions are commonly based on the clinical history and radiographic appearance. This study assesses the pre-treatment features of SCFE and correlates them to the clinical history to: (1) define the underlying pathological mechanisms; (2) correlate the morphological hip abnormalities with the clinical classifications; (3) identify ... [Abstract] [Full-text] Whole-body MRI in the pediatric patient. Eur J Radiol, 70(3): 442-51. Whole-body MRI is a fast and accurate modality for detection and monitoring of disease throughout the entire body. For pediatric use the technique is of special interest twofold: first it is a radiological method without radiation exposure and second it allows for whole-body staging as well as for detailed local evaluation for surgical treatment thus reducing the number of examinations to be performed in sedation. In the pediatric population the technique is used for oncological, ... [Abstract] [Full-text] Whole-body MRI as a screening tool? Eur J Radiol, 70(3): 452-62. Screening (early detection of disease in asymptomatic groups of persons) with whole-body MR (wb-MR) has only recently become possible. Technical requirements include extended scanner table range and extended coverage with surface coils. This allows for examining the whole body without repositioning the patient. wb-MR angiography can be combined with cerebral and cardiac MR to form a comprehensive screening protocol for atherosclerosis; and many malignancies can technically be screened for, such ... [Abstract] [Full-text] © 2005-2009 MRI Research Today. All Rights Reserved. |
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