PURPOSE: To evaluate the correlation between onset of brain infarction and Gd-DTPA enhancing patterns on MRI. MATERIALS AND METHODS: We reviewed MRI of 58 lesions in 45 patients with clinically documented brain infarction retrospectively. Axial, coronal and sagittal T1WI (TR/TE 450-520/20), T2WI (TR/TE 2190/90) and Gd-DTPA enhanced T1WI were performed with a 0.5T superconductive MR system. We analyzed Gd-enhancing patterns lhat were divided into intravascular, meningeal, and parenchymal enhancement. Parenchymal pattern was subdivided into mottled, partial ring like and dense enhancement. RESULTS: lntravascular enhancement was seen at 1-10 days in 30(53%) of 58 infarctions. Meningeal enhancement (13%) was noted at 1--6 days. Parenchymal enhancement (50%) was seen at 2--28 days and subdividing patterns are as follows:The mottled enhancement pattern was seen earlier at 2-8 days and partial ring like or dense enhancement patterns at 5-28 days. CONCLUSION: After reviewing Gd-enhanced MRI of infarction, the intravascular and meningeal enhancement patterns were earlier than parenchymal enhancement. Among parenchymal patterns, the mottled pattern was seen earlier than partial ring like or dense patterns. In conclusion, Gd-enhancing patterns of brain infarction are useful in estimating the age of infarction including acute infarction.
Brain Infarction* ; Brain* ; Gadolinium DTPA* ; Humans ; Infarction* ; Magnetic Resonance Imaging* ; Retrospective Studies

No abstract available.

The Waltons method-a method of dynamic reconstruction of old ligament injuries of the knee and a combination procedure of O'Donoghue, Bosworth, and Slocum-was introduced with one case experience. This method seemed to be better than other reconstructive procedures, especially in the aspect of rotatory and valgus instability of the knee.
Knee ; Ligaments ; Methods

Cervical tuberculous lymphadenitis is a commonly encountered disease, expecially in adults, Differentiation from other lymphadenopathy and benign conditions such as cystic neck masses is important. CT findings of tuberculous lymphadenopathy in the abdomen and thorax are reported in many literatures. But there are only a few articles concerning cervical tuberculous lymphadenopathy. The authors retrospectively analyzed CT findings of 33 cases with cervical tuberculous lymphadenitis regarding distribution, contour, enhancing pattern, changes of adjacent fascial plane, and dermal and subcutaneous manifestations. We concluded that the presence of conglomerated nodal masses with central lucency, thick irregular rim of contrast enhancement and inner nodularity, varying degree of homogenous enhancement in smaller nodes, dermal and subcutaneous manifestations of inflammation such as thickening of overlying skin, engorgement of the lymphatic and thickening of adjacent muscles, and diffusely effaced fascial plane are suggestive of tuberculous lymphadenitis. However, some CT patterns of tuberculous adenitis may be seen in other disease; for example, enhancement can occur in hyperplastic nodes, vascular metastasis(thyroid, melanoma, and hypernephroma), lymphoma, granulomatous disease, and Castleman's disease.
Abdomen ; Adult ; Giant Lymph Node Hyperplasia ; Humans ; Inflammation ; Lymphadenitis ; Lymphatic Diseases ; Lymphoma ; Melanoma ; Muscles ; Neck ; Retrospective Studies ; Skin ; Thorax ; Tuberculosis, Lymph Node* ; Yemen

No abstract available.
Astrocytes* ; Gene Expression* ; Humans* ; Polymerase Chain Reaction*

No abstract available.
Astrocytes* ; Humans*

No abstract available.
Membranes* ; Pregnancy* ; Rupture*

No abstract available.
Antibodies, Anticardiolipin* ; Female ; Pregnancy ; Pregnancy Outcome* ; Pregnancy*

No abstract available.

Because melanocytes are found throughout the leptomeninges, primary melanotic pigmented tumors such as pigmented meningioma, malignant melanoma, melanoblastosis, and melanocytoma can arise from this region. Melanocytomas have been described in the literature as isodense or hyperdense compared with brain parenchyme, as seen on noncontrast-enhanced CT, and as showing relatively homogeneous enhancement. MR imaging demonstrates a high signal on T1-weighted images, and an iso to hypointense signal on T2- weighted images. We report the imaging findings of a melanocytoma that showed hyperdense attenuation on precontrast CT with homogeneous enhancement and hyperintense signal intensity on T1-weighted images and dark signal intensity enhancement on T2-weighted images, and also review the literature.
Brain ; Cerebellopontine Angle* ; Magnetic Resonance Imaging ; Melanocytes ; Melanoma ; Meninges ; Meningioma