Ponraj Chinnadurai

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BACKGROUND Since its introduction, digital subtraction angiography has been considered the gold standard in diagnostic imaging for neurovascular disease. Modern post-processing techniques have made angiography even more informative to the cerebrovascular neurosurgeon or neurointerventionalist. Open neurosurgical procedures such as aneurysm clipping,(More)
We herein present a rare case of bilateral positional vertebrobasilar insufficiency secondary to mechanical obstruction of the V2 segment of the vertebral artery in a 71-year-old patient presenting with vertigo, occipital headache, tremors and respiratory irregularities. Two-dimensional digital subtraction angiography is the traditional diagnostic imaging(More)
It is known that a reduction of the field-of-view in 3-D X-ray imaging is proportional to a reduction in radiation dose. The resulting truncation, however, is incompatible with conventional reconstruction algorithms. Recently, a novel method for region of interest reconstruction that uses neither prior knowledge nor extrapolation has been published, named(More)
Purpose: A standard imaging protocol for monitoring and predicting the response to Peptide Receptor Radionuclide Therapy (PRRT) has not been established yet. The aim of this study was to evaluate the response to PRRT by quantitative SPECT-CT and assess the value of SPECT-CT over routine planar scintigraphy in predicting the outcome of PRRT. Methods: 32(More)
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