Daniel Ahn

Publications14
h-index9
Citations870
Highly Influential Citations28
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Peritumoral diffusion tensor imaging of high-grade gliomas and metastatic brain tumors.
BACKGROUND AND PURPOSE Diffusion tensor imaging (DTI) is an advanced MR technique that describes the movement of water molecules by using two metrics, mean diffusivity (MD), and fractional anisotropy… Expand
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Diffusion-tensor MR imaging of intracranial neoplasia and associated peritumoral edema: introduction of the tumor infiltration index.
PURPOSE To determine whether diffusion-tensor magnetic resonance (MR) imaging metrics of peritumoral edema can be used to differentiate intra- from extraaxial lesions, metastatic lesions from… Expand
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Retrotransposon insertions in the clonal evolution of pancreatic ductal adenocarcinoma
Pancreatic ductal adenocarcinoma (PDAC) is typically diagnosed after the disease has metastasized; it is among the most lethal forms of cancer. We recently described aberrant expression of an open… Expand
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Dacryocystorhinostomy: History, evolution and future directions.
Dacryocystorhinostomy (DCR) is a procedure of choice for nasolacrimal duct obstruction and chronic dacryostenosis in the setting of patent canaliculi and a functional lacrimal pump. Two major… Expand
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Mice deficient for N-ras: impaired antiviral immune response and T-cell function.
Ras proteins have a key role in the regulation of several cellular functions, and are involved in a significant percentage of human tumors. However, the specific functions of the different Ras… Expand
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Inhibition of Ras oncogenic activity by Ras protooncogenes
Point mutations in ras genes have been found in a large number and wide variety of human tumors. These oncogenic Ras mutants are locked in an active GTP‐bound state that leads to a constitutive and… Expand
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Complex effects of Ras proto-oncogenes in tumorigenesis.
Ras proteins have been found mutated in about one-third of human tumors. In vitro, Ras has been shown to regulate distinct and contradictory effects, such as cellular proliferation and apoptosis.… Expand
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The LysR‐type transcriptional regulator, CidR, regulates stationary phase cell death in Staphylococcus aureus
The Staphylococcus aureus LysR‐type transcriptional regulator, CidR, activates the expression of two operons including cidABC and alsSD that display pro‐ and anti‐death functions, respectively.… Expand
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Meta-analysis of capsule endoscopy in patients diagnosed or suspected with esophageal varices.
The PillCam ESO (Given Imaging, Israel) or esophageal capsule endoscopy (ECE) is a novel technique used in the diagnostic evaluation of esophagus. Many studies have been performed to compare the… Expand
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Randomized Clinical Trials in Stroke Research
A randomized clinical trial is widely regarded as the most rigorous study design to determine the efficacy of intervention because spurious causality and bias associated with other experimental… Expand
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