Neurointerventional guide sheath.
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Cardiac Catheterization↗
Biomedical subjects
U S Kanamalla
Publications and source records attributed to U S Kanamalla.
Gadolinium diffusion into subdural space: visualization with FLAIR MR imaging.
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Contrast Media↗
Cavernous dilatation of mesencephalic Virchow-Robin spaces with obstructive hydrocephalus.
We describe two patients with mild ventricular dilatation, shown to have cystic spaces in the midbrain, which we interpreted as greatly enlarged Virchow-Robin spaces. We discuss the pathophysiology and the possible relations to the mild hydrocephalus.
Adult↗
Imaging of cranial meningitis and ventriculitis.
A spectrum of infectious diseases may affect the cranial meninges. Contrast-enhanced MR imaging and fluid-attenuated inversion-recovery MR techniques are superior to contrast-enhanced computed tomography for detecting and characterizing most pathologic meningeal conditions. In patients with meningitis, a major role of medical imaging is to identify potential complications such as hydrocephalus, extra-axial mass-forming infectious collections, parenchymal infarcts related to arteritis, ventriculitis, and associated underlying parenchymal abscesses or granuloma formations. Early diagnosis of such complications may reduce the rate of morbidity and mortality in this group of patients.
Cerebral Ventricles↗
Imaging of nonlaryngeal neuroendocrine carcinoma.
The imaging and pathologic features of three cases of nonlaryngeal neuroendocrine carcinoma of the head and neck are described. Neuroendocrine carcinomas represent malignant epithelial neuroendocrine neoplasms and are classified as three types: typical carcinoid (well differentiated), atypical carcinoid (moderately differentiated), and small cell neuroendocrine (poorly differentiated) carcinomas. The CT and MR imaging features of these tumors are nonspecific. Paranasal sinus neuroendocrine carcinomas showed expansion and destruction of the sinus, whereas metastatic neuroendocrine carcinomas to an intraparotid lymph node presented as a circumscribed parotid mass on CT scans.
Head and Neck Neoplasms↗