نتایج جستجو برای: gadolinium dtpa

تعداد نتایج: 13816  

Journal: :Dalton transactions 2016
Jie Li Taishan Wang Yongqiang Feng Ying Zhang Mingming Zhen Chunying Shu Li Jiang Yuqing Wang Chunru Wang

A new water-soluble gadolinium metallofullerenol was prepared through a solid-liquid reaction. It was characterized to have an enhanced effective magnetic moment, and improved T1-weighted relaxivity and magnetic resonance imaging performance in the liver. This material prepared by a facile method has wide application as a contrast agent and biological medicine.

Journal: :iranian journal of radiology 0
mirjan m. nadrljanski department of diagnostic imaging, institute of oncology and radiology of serbia (iors), serbia; department of diagnostic imaging, institute of oncology and radiology of serbia (iors), pasterova, serbia +381-13353769, [email protected] biljana b. marković center for radiology and magnetic resonance imaging, clinical center of serbia (kcs), serbia; department of radiology, faculty of medicine, university of belgrade, serbia zorica č. milošević department of diagnostic imaging, institute of oncology and radiology of serbia (iors), serbia; department of radiology, faculty of medicine, university of belgrade, serbia

conclusion non-mass-like lesions, lesions with focal or segmental distribution, with a “plateau” enhancement curve type were the most frequent findings of dcis lesions on mri. background adequate diagnosis of ductal carcinoma in situ (dcis) could lead to efficacious treatment. due to the fact that dcis lesions can progress to invasive carcinomas and that the sensitivity of the standard examinat...

Journal: :AJNR. American journal of neuroradiology 1989
C M Nguyen K C Ho S W Yu V M Haughton J A Strandt

MR imaging after IV gadolinium-DTPA administration has demonstrated contrast enhancement in traumatized lumbar intervertebral disks. To characterize the morbid anatomy that correlates with the contrast enhancement, we developed a canine model of traumatized intervertebral disks. Diskectomy was performed with a nucleotome and the spines were imaged biweekly with MR and Gd-DTPA. The spines were s...

Journal: :Journal of neurology, neurosurgery, and psychiatry 1995
M Filippi A Campi V Martinelli B Colombo T Yousry N Canal G Scotti G Comi

This study was performed to evaluate whether a triple dose of gadolinium-DTPA (Gd-DTPA) increases the sensitivity of brain MRI for detecting enhancing lesions in patients with primary progressive multiple sclerosis (PPMS). T1 weighted brain MRI was obtained for 10 patients with PPMS in two sessions. In the first session, one scan was obtained five to seven minutes after the injection of 0.1 mmo...

2010

INTRODUCTION Delayed gadolinium enhanced MRI of cartilage (dGEMRIC) is a quantitative MRI method utilizing anionic contrast agent Gd-DTPA. The suggested mechanism is that the fixed charge density (FCD) of cartilage, induced by glycosaminoglycans (GAG), dictates the contrast agent distribution in cartilage via electrostatic repulsion [1]. However, this assumption has not been thoroughly examined...

شهبازی گهرویی, داریوش,

اگرچه (Gadolinium-diethylene triamine pentacetic acid=Gd-DTPA) به عنوان یک عامل کنتراست در تصویرگیری به روش رزنانس مغناطیسی (MRI) شناخته شده است، ولیکن افزایش اثر کنتراست آن برای غلظت های زیاد یکنواخت نیست. برای بهینه انتخاب کردن پارامترهای مناسب برای این عامل کنتراست، آزمایشات MRI بر روی نمونه های خون، سلول های سرطان پوست (Melanoma cell line)، کلراید سدیم با غلظت های مختلف Gd-DTPA و محلول های ...

Journal: :AJNR. American journal of neuroradiology 1993
M Tuite L Ketonen K Kieburtz B Handy

PURPOSE To determine the value of gadolinium in routine head MR imaging of HIV-infected patients. METHODS One hundred and three consecutive human immunodeficiency virus-infected patients referred for head MR imaging were scanned without and with intravenous gadopentetate dimeglumine (Gd-DTPA) contrast. RESULTS The precontrast scans of 82 patients were either normal, or had atrophy or diffus...

Journal: :AJNR. American journal of neuroradiology 2002
Tian Zhang Akira Matsumura Tetsuya Yamamoto Fumiyo Yoshida Tadao Nose Nobuhiro Shimojo

BACKGROUND AND PURPOSE After the advent of extracellular contrast media, hepatobiliary-specific gadolinium chelates were developed to improve the diagnostic value of MR imaging of the liver. Gadobenate dimeglumine (Gd-BOPTA) is a new paramagnetic contrast agent with partial biliary excretion that produces prolonged enhancement of liver parenchyma on T1-weighted images. However, whether Gd-BOPTA...

Journal: :Acta radiologica 2007
N Dahlström A Persson N Albiin O Smedby T B Brismar

PURPOSE To evaluate the biliary enhancement dynamics of the two gadolinium chelates Gd-BOPTA (MultiHance) and Gd-EOB-DTPA (Primovist) in normal healthy subjects. MATERIAL AND METHODS Ten healthy volunteers were evaluated with both agents by magnetic resonance (MR) imaging at 1.5T using a breath-hold gradient-echo T1-weighted VIBE sequence. The relative signal intensity (SI) differences betwee...

Journal: :Brain : a journal of neurology 1997
N C Silver C D Good G J Barker D G MacManus A J Thompson I F Moseley W I McDonald D H Miller

Although clinical end points remain the definitive measure of therapeutic efficacy in multiple sclerosis, more sensitive markers of disease activity are required to screen potential disease-modifying agents. The use of gadolinium contrast-media in MRI studies increases both the reliability and sensitivity of detecting active lesions in multiple sclerosis. We studied three potential methods for ...

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