نتایج جستجو برای: diffuse weighted imaging
تعداد نتایج: 596861 فیلتر نتایج به سال:
BACKGROUND AND PURPOSE As is the case for CT scans, MR images may occasionally appear deceptively normal unless proper windowing is used. We sought to illustrate the necessity for proper windowing and for assessing the gray-white matter differentiation on diffusion-weighted (DW) images in the setting of hypoxic-ischemic encephalopathy. METHODS Six comatose patients (age range, 34-56 years) un...
PURPOSE Reports of serial magnetic resonance imaging (MRI) in hypoglycemic encephalopathy were limited because MRI is not routinely performed in these patients. Here we present one patient with a history of hypoglycemic encephalopathy and discuss sequential neuroimaging findings. CASE REPORT A 53-year-old male mistakenly took oral hypoglycemic agents developed hypoglycemic encephalopathy. Imm...
A three-year-old neutered male toy fox terrier presented for a Chiari-like malformation. No neurological deficits were found on examination, although diffuse cervical, thoracolumbar and head pain were present. A mass within the fourth ventricle was apparent on magnetic resonance imaging (MRI) of the brain. The lesion was hyperintense to brain parenchyma on T2-weighted images, hypointense on T1-...
BACKGROUND Supratentorial diffuse low-grade gliomas in adults extend beyond maximal visible MRI-defined abnormalities, and a gap exists between the imaging signal changes and the actual tumor margins. Direct quantitative comparisons between imaging and histological analyses are lacking to date. However, they are of the utmost importance if one wishes to develop realistic models for diffuse glio...
Background Chronic liver diseases irrespective of etiology causes liver parenchymal loss and fibrosis. Continued liver damage and untreated liver fibrosis and leads to cirrhosis and its associated complications. Prognosis and management of chronic liver diseases greatly depend on the amount and progression of liver fibrosis. There is renewed interest in early detection and staging of liver fibr...
abstract background iron overload is the main transfusion related side effects in patients with transfusion dependent hemoglobinopathies. severe iron deposition in tissues leads to organ dysfunction. many organs can be affected such as heart, liver, and endocrine organs. cardiac failure and liver fibrosis are the consequent of iron overload in transfusion dependent hemoglobinopathy. magnetic re...
BACKGROUND Reversible focal lesions in the splenium of the corpus callosum (SCC) or reversible splenial lesion syndrome are rare and little is known about their pathophysiology. CASE SUMMARY The authors describe a case of a 65-year-old female who presented with fever, abnormal behaviour and mild hypernatremia. She was on neuropsychiatric treatment for bipolar disorder but denied any history o...
In this study, we evaluated the dependence of saturation pulse length on APT imaging of diffuse gliomas using a parallel transmission-based technique. Twenty-two patients with diffuse gliomas (9 low-grade gliomas, LGGs, and 13 high-grade gliomas, HGGs) were included in the study. APT imaging was conducted at 3T with a 2-channel parallel transmission scheme using three different saturation pulse...
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