In a prospective, comparative study, 18F-FDG-PET/CT accurately evaluated the lymph node (N status) component of the disease in 76% of patients, compared to 60% of patients with CT alone [39]. In another study, surgical management was altered in 30% (11/36) of patients evaluated for ...
Diffusion tensor imaging (DTI) has proven to be a useful tool for characterising tumours and defin- ing white matter anatomy, as DTI can non-invasively trace neuronal tracts in the brain and spine. Not only does DTI enable visualisation of important white matter tracts in the brain, but it ...
Here we used PET and FDG to compare the brain metabolic responses (a marker of brain function) to methylphenidate (a stimulant drug that cocaine abusers report to be similar to cocaine when administered intravenously), between cocaine addicted subjects (n=21) and controls (n=15). In paral- ...
While the main benefit in using quantitative T1 and T2(*)mapping—compared to multi-contrast T1w and T2(*)w imaging—is to improve reproducibility and facilitate longitudinal monitoring of changes in plaque composition, it still does not allow for direct assessment of the relative contribution of ...
In terms of therapy, it is important to know which trajectory a particular carcinoma will follow because of tangible opportunities for drugs to reroute cellular fates towards the first or at least second outcome. These mathematical models have a distinct advantage over clinical observations and cell ...
Although it is well known that the nature of a suicidal act (suicide attempt or completed suicide) may be influenced by gender, age, availability of a lethal mean and specific suicidal dimensions, such as suicidal intent and medical lethality, these behaviors seem to have more in common and ...
Pause length (median in ms) 855.65 ± 253 629.41 ± 213 p < 0.01 0.97 Pause frequency (per 100 words) 9.01 ± 3.76 7.41 ± 2.74 ns – Lexical content − 0.52 ± 0.06 − 0.46 ± 0.07 ns Values shown are mean ± SD. Statistically...
Then the solution in algebraic and analytic geometry is to do the local version first, (taking account of the fact that "local" does not mean "locally trivial"), and after that the pointwise version. And tensor products play a crucial role, even in the definiton of vectors and covectors....
A 52-year-old woman with a hibernoma. (A) Coronal CT image shows a ground glass dense lesion with a thin sclerotic rim (arrowheads) in the right upper sacrum. (B) Fused axial PET-CT image shows an elevated FDG uptake with SUVmax 5.0. (C) Coronal T1-weighted image shows high T1 si...
FDG uptake is also increased in inflammatory tissue and in normal organs such as the brain, the urinary tract and bowel, causing false-positive findings. By combining the functional information of PET with the morphological information of CT false-positive errors can be reduced and superior ...