Hideo Kamada

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[11C]choline (11C-choline) positron emission tomography (PET) was performed to evaluate its clinical utility in the diagnosis of tumors in the nasal cavity and paranasal sinuses. We studied 22 patients with suspicion of malignant tumors in the nasal cavity and paranasal sinuses. Tumor uptake of 11C-choline was measured with standardized uptake value (SUV)(More)
UNLABELLED The aim of this study was to evaluate the clinical value of positron emission tomography (PET) with 11C-labeled choline (CHOL) for the differential diagnosis of malignant head and neck tumors from benign lesions as compared with 18F-fluorodeoxyglucose PET. METHODS We studied 45 patients (28 males, 17 females, age range, 29-84 years) with(More)
The main factor that affects the prognosis of patients with head and neck cancer (HNC) is regional lymph node metastases. For this reason, the accurate evaluation of neck metastases is required for neck management. This study investigates the sentinel lymph node identification and the accuracy of the histopathology of the sentinel lymph node in patients(More)
Oncogenic osteomalacia (OOM) is a rare bone disease characterized by inadequate bone mineralization and is caused by a humoral factor mainly produced by benign mesenchymal tumors. We report a case of OOM caused by an occult phosphaturic mesenchymal tumor in the paranasal sinus. The causative tumor was small and localized in the ethmoid sinus, and the(More)
As one of the technologies for retrieval of desired contents over large scale networks, multiagent systems receive much attention. Since there are too many contents on the network to search all the contents exhaustively, some applications on multiagent systems have time constraint, that is, they have to obtain a result by the given deadline. In order to(More)
Flooding algorithm is a fundamental control mechanism to notify all the nodes of some information, to get desired information from all the nodes, or to reserve a route, and so on. Flooding algorithm has merits of robustness and optimality to solutions. However, flooding algorithm has problems which increase the processing time until finishing the flooding(More)
Inflammatory pseudotumors are rare and are characterized by solitary, demarcated lesions with numerous inflammatory cells, mesenchymal cells, and collagenous fibers. They usually occur in the lung, but have also been reported in the thyroid gland, pleura, liver, kidney, bile duct, spinal cord, testis, and soft tissues. Since inflammatory pseudotumors of the(More)
OBJECTIVES/HYPOTHESIS The observation of fungiform papillae is a useful objective taste examination. The purpose of this study is to develop a new method using narrow band imaging for assessment of taste function. STUDY DESIGN Using a narrow band imaging endoscope, we assessed the number and blood vessel morphology of fungiform papillae and compared with(More)
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