On T2-weighted images, most solid lesions exhibit nonspecific intermediate signal intensity, whereas most cystic lesions exhibit marked hyperintensity. In contrast, on T2-weighted images, a relatively small number of lesions exhibit hypointensity. This review aimed to differentiate, according to the ...
Hypointense rims peripherally on T2-weighted MRI (rim lesions) have been associated with gadolinium ring-enhancing lesions in multiple sclerosis (MS) in pathological studies. However, little is known about their frequency, we analyzed clinical significance in a cohort of MS sufferers according to ro...
Lipomas usually appear as highly echogenic, well-marginated lesions in the abdominal wall (Fig. 135-3). Neurofibromas appear as nonspecific, well-defined, hypoechoic solid lesions. Hemangiomas and lymphangiomas have a vari 正在翻译,请等待... [translate] aSize Does Matter 大小事关 [translate] a...
Secondary MRI outcomes, including cumulative number of new T2 lesions and T1 hypointense lesions, also showed benefit. 次要的MRI结果,包括新T2损伤和T1低信号损伤的累积数,也显示了益处。 news.dxy.cn 2. The tumor showed an Ill-defined hypointense mass on T1-weighted imaging and hyperintense mass ...
hypointense head and neck lesions on T2-weighted images are classified into the following nine categories: calcified or osseous lesions, granulomatous lesions, fibrous lesions, mucous- or proteincontaining lesions, hemosiderin-containing lesions, melanin-containing lesions, thyroglobulin...
The majority of pathologic processes in the brain parenchyma produce hyperintensity on T2-weighted images (WI); however, similar- appearing hypointense lesions on T2-weighted images are also seen in a wide range of pathologic processes. The spectrum of diseases that appear hypointense on T2-...
Less emphasis has been placed on how cartilage disease may be manifested by dark signal on T2-weighted sequences. The appearance of the recently described "cartilage black line sign" of the femoral trochlea highlights these lesions and further raises the question of their etiology. We illustrate ...
Eighteen false positive lesions on T2-weighted MRI showed low wash-in-rate values suggesting non-cancer lesions, while in 5/8 false negative cases high wash-in-rate values correctly suggested prostate cancer. Nine lesions with surgically proven cancer were not included in the saturation biopsy ...
A search of PubMed with the keywords "Rathke cyst sphenoid" revealed at least another very similar case recently published in the Journal of Neuro-surgery.The MR signal intensity characteristics of all these lesions were identical, with Tl and T2 signal intensities slightly greater than that of ...
T2 hyperintensity, diffusion restriction, cirrhosis, and higher ECOG-PS could identify lesions with increased risk. These factors should be considered for further diagnostic evaluation or treatment of such lesions. Key Points: Non-hypervascular hepatobiliary phase hypointense lesions ha...