MR T1-weighted images
Normalization of Cerebral Volumes by Use of Intracranial Volume: Implications for Longitudinal Quantitative MR Imaging
... terms of operator time. A quicker, automated pro- cedure would be ideal. Rudick et al (29) have de- veloped the brain parenchymal fraction (BPF), cal- culated as a ratio of brain parenchymal volume to total volume ...
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Emerging Patterns of Diffusion Weighted MR Imaging in Creutzfeldt Jakob Disease: Case Report and Review of the Literature
... Routine MR imaging se- quences (T1-weighted, T2-weighted, fluid-attenuated inversion recovery [FLAIR], gadolinum-enhanced T1-weighted, and gradient-echo sequences) may show ...
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Discrepancy Between Neuroimaging Findings and Clinical Phenotype in Alexander Disease
... the MR imaging at the age of 39 months (Fig ...T2-weighted images and high signal intensity on T1-weighted images were clearly seen on the last 3 MR studies (Fig ...last ...
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Evolution of high intensity basal ganglia lesions on T1 weighted MR in neurofibromatosis type 1
... The MR examinations were performed on a variety of scanners, but all scanners were ...All MR studies included precontrast T1-weighted spin-echo im- ages and T2-weighted spin-echo ...
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Clinical and radiologic findings in progressive facial hemiatrophy (Parry Romberg syndrome)
... follow-up MR examinations obtained during pe- riods of worsening atrophy of the left facial structures at ages 6 years, 6 years 1 month, 6 years 5 months, and 7 years 3 months revealed progressive abnormal changes ...
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Comparison of Ultrasmall Particles of Iron Oxide (USPIO) Enhanced T2 Weighted, Conventional T2 Weighted, and Gadolinium Enhanced T1 Weighted MR Images in Rats with Experimental Autoimmune Encephalomyelitis
... ed images obtained 24 hours after USPIO injection (D3), multiple focal areas of abnormal low signal intensity were found within the CNS parenchyma, mainly in the periventricular areas of the cerebellum and brain ...
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MRI in multiple myeloma: a pictorial review of diagnostic and post-treatment findings
... on T1-weighted images, due to the lower fat content, typically lower than the muscle and intervertebral ...T2-weighted images, the lesions appear rather hyperintense due to the high ...
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Effect of multislice interference on image contrast in T2 and T1 weighted MR images
... Unfortunately, the acquisition of contiguous slices in multislice MR imaging can lead to substantial degradation of image contrast and Signal due to interslice interference, particularly[r] ...
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Original Article Metachronous multicentric giant cell tumor in the spine: a case report and review of published reports
... On MR imaging, the component of the lesion in the right vertebral body and spinous process was hypointense on T1-weighted and hyperin- tense on T2-weighted images indicating cystic ...
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The normal and abnormal genu of the corpus callosum: an evolutionary, embryologic, anatomic, and MR analysis
... –25). Images of 20 fetuses that were obtained on ...diameter. Images in the sagittal plane were acquired with a three-dimensional spoiled gradient-echo sequence that accentuates T1 ...Sagittal ...
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Chorea ballismus with nonketotic hyperglycemia in primary diabetes mellitus
... (CT, MR, and single-photon emission CT [SPECT]) findings in a series of patients with chorea-ballismus associated with nonketotic hyperglycemia in primary diabetes mellitus and to correlate the imaging findings ...
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The European Association of. NeuroOncology Magazine
... resonance images of patients with skull-base metastases causing Greenberg’s 5 ...(a) T1-weighted, gadolinium-enhanced MR axial image in a 60-year-old woman with skull-base metastasis from ...
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Efficacy of fast screening MR in children and adolescents with suspected intracranial tumors
... screening MR proto- col, with only axial fast spin-echo T2-weighted and limited midline-centered sagittal conventional spin- echo T1-weighted images, would have the same sen- sitivity ...
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Acute Spontaneous Spinal Epidural Hematomas
... on T1- weighted images in only two of six cases exam- ined within 2 days after the onset of ...‘‘T1 weighted MR im- ages were most valuable because of the pathog- nomonic signal ...
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Choroidal hemangioma: MR findings and differentiation from uveal melanoma
... The MR appearance of circumscribed choroidal hemangioma has been described in few reports (6, 8, ...on T1-weighted SE images, whereas isointensity with the vitreous on FSE T2-weighted ...
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MR of Craniopharyngiomas: Tumor Delineation and Characterization
... A , T2-weighted axial MR study shows areas of focal decreased signal intensity also present on T1-weighted images TE = 30, TR = 2000 msec.. Calcification could be suspected on basis of M[r] ...
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Enhanced and unenhanced MR with magnetization transfer in multiple sclerosis
... MT T1-weighted images. The effect of the longer T1 and T2 relaxation times and increased proton density in reducing the MT ratio is not well known ...long T1 and T2 relaxation times ...
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Which MR Imaging Sequences Are Necessary in Determining the Need for Radiation Therapy for Cord Compression? A Prospective Study
... that T1-weighted images alone would usually provide the same clinically relevant diagnostic information for urgent treatment planning as the reference MR imaging pro- ...limited MR ...
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Diagnosis of ruptured intracranial dermoid cyst: value MR over CT
... Signal intensity of the solid mass was low on T1-weighted MR images and inhomogeneously high on T2-weighted images, which correlated pathologically with the presence of crystal cholester[r] ...
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MRI of the axial skeleton in spondyloarthritis: the many faces of new bone formation
... reading MR of the sacroiliac joints, it is important to examine the joint space on T1-weighted images for high signal intensity (“backfill”) or ankylosis, as these signs are very specific for ...
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