Somenath Chatterjee

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BACKGROUND Tumefactive demyelination (TD) is a relatively uncommon entity which mimics other focal intracranial lesions. Conventional radiological findings in tumefactive demyelination have been well described. However, DTI and MRS findings in TD have not been studied in detail. PURPOSE To evaluate the usefulness of conventional magnetic resonance imaging(More)
Pseudoaneurysms arise as a complication of arterial wall injury or infection. Traumatic pseudoaneurysms can be treated nonsurgically by endovascular interventional procedures such as covered stent placement or by trapping of the parent vessel by coils, thus excluding the pseudoaneurysm or by percutaneous thrombin injection [1]. The anatomy of the(More)
Human diabetes is associated with cognitive impairment and structural abnormalities in the brain such as cerebral atrophy. The aetiology of these abnormalities is not known. The BB/E rat is a well-established model of type 1 (insulin dependent) diabetes. A cohort of 34 BB/E rats with diabetes was divided into three sub-groups according to age (and duration(More)
AIM To study the neuroimaging features of craniocerebral aspergillosis infection in immunocompetent patients. MATERIALS AND METHODS The clinical and imaging data of 12 patients of aspergillus fungal infection were retrospectively reviewed. Diagnosis of fungal infection was confirmed by histopathologic examination of surgically excised specimen,(More)
Craniopharyngiomas can present as suprasellar cystic lesion with varied imaging appearance. In magnetic resonance imaging using T1-weighted sequence, the cyst can show hypointense, isointense or hyper intense signals depending on the cyst content. We report a case where the T1 signal intensity of a craniopharyngioma changed over time. The hypointense lesion(More)
The lumbar spine is a less common location for chordoma. Here we describe a 44-year-old woman presenting with pain due to a L4 vertebral expansile lesion that caused significant canal stenosis and neural foraminal compromise. Vertebroplasty was performed and resulted in immediate pain relief. For patients with painful lumbar chordoma who are unwilling to(More)
1 Department of Imaging Sciences and Interventional Radiology, SCTIMST, Trivandrum, India, 2 Department of Pathology, SCTIMST, Trivandrum, India. Introduction Intracranial cystic lesions have always been a diagnostic challenge to the radiologist. They can present either with unusual imaging appearance in the form of unusual signals or in uncommon locations.(More)
Recently, energy harvesting generators pay lots of attention in current research field due to its usefulness in low-power device applications, e.g. recharge a cell-phone in remote place. Ambient motion is one of the main sources of energy harvesting. A convenient way to generate an electrical energy from mechanical vibration using hand-fan is reported here.(More)