Contrast-Enhanced Fast MRI in Differentiating Brain Toxoplasmosis and Lymphoma in AIDS Patients

CT and MR imaging in primary cerebral Non-Hodgkin's lymphoma

“…The advantages of dynamic MR with Gd-DTPA in the differentiation of cerebral lymphomas from toxoplasmosis lesions have been demonstrated by LAISSY et al (27). The unenhanced images available in our study showed only a different signal intensity for immunoblastic and centroblastic B NHL.…”

Nocardia brain abscess mimicking high-grade necrotic tumor on perfusion MRI

“…2 The literature on PWI in abscess is scarce; two early studies focused on the different PWI behaviour of a non-pyogenic toxoplasmosis necrotic lesion and lymphomatous masses in autoimmune deficiency syndrome. 7,8 More recent studies report on the ability of PWI to discriminate pyogenic brain abscesses, displaying low rCBV compared to contralateral white matter, from necrotic brain tumors, with elevated rCBV. 1,2,4 In the experimental setting, cerebral abscesses have relatively high amounts of mature collagen and decreased neovascularity in the late capsular stage.…”

Dynamic gadolinium-enhanced MRI evaluation of porcine femoral head ischemia and reperfusion

“…Dynamic magnetic resonance tomography has been employed for the examination of soft tissue that is well perfused [17,18] and used in the diagnosis of inflammatory processes [19,20,21]. The graphically documented course after intravenous administration of Gd-DTPA has shown typical signal intensity (SI) versus time curves which have appeared to depend on different structures of the tested tissue, on the choice of different pulse frequencies and field strengths as well as on the initial T1/T2 weighting [20].…”