Koh Nakajima

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OBJECTIVES The aim of this study was to assess the frequency of the foramina and their canals on the lingual surface of the mandible using computed tomography (CT), which was carried out for dental implant planning. MATERIAL AND METHODS First, the visibility of the lingual canals of the CT image was verified by dissecting five cadavers. CT images of 200(More)
OBJECTIVE The study aims at assessing the incidence, course, and characteristics of retromolar canals. STUDY DESIGN The cone-beam computed tomography images of 171 subjects were evaluated for the presence, course, and pattern of occurrence of retromolar canals. RESULTS Three types of retromolar canals namely A, B, & C were detected in 129 subjects. Type(More)
A bilateral gastrocnemius tertius muscle and a unilateral accessory soleus muscle were encountered during the routine educational dissection studies. The right gastrocnemius tertius muscle consisted of one belly, but the left one of two bellies. On the left side, the superficial belly of the gastrocnemius tertius muscle had its origin from an area just(More)
OBJECTIVE This article focuses on the anatomy of the mylohyoid muscle, a crucial landmark in imaging of the oral cavity and upper neck, showing dissected specimens and CT and MR images. CONCLUSION Identification of the relationship of a lesion in the sublingual space to the mylohyoid muscle using MDCT and high-resolution MRI is a key part of the imaging(More)
OBJECTIVE The purpose of this study was to evaluate the effect of tube current reduction on the quality of cone-beam computerized tomography (CBCT) images of the maxilla and mandible for presurgical implant planning. STUDY DESIGN Six cadaver heads were imaged with a CBCT (3D Accuitomo) operated at 80 kVp and variable tube current (8, 4, 2, or 1 mA) in(More)
OBJECTIVE To assess effects of dose reduction on image quality in evaluating maxilla and mandible for pre-surgical implant planning using cadavers. MATERIALS AND METHODS Six cadavers were used for the study using multi-detector computed tomography (CT) operated at 120 kV and the variable tube current of 80, 40, 20 and 10 mA. A slice thickness of 0.625 mm(More)
Published descriptions of the buccinator muscle of the cat (Felis domestica) differ from those for the same muscle in other mammals. Only an oral component of the muscle has been described in cats, not a buccal part. The purpose of this study was to identify the buccinator muscle in the cat and report on its anatomical features in detail. Dissections of the(More)
The styloglossus is one of the three extrinsic muscles of the tongue; it enters the tongue from behind. During human dissection practice for dental students at the Showa University School of Dentistry in 2006, the authors observed anomalous muscle arising from the inner surface of the mandibular angle and inserting into the tongue bilaterally. This muscle(More)
INTRODUCTION The human azygos vein (AV) generally runs on the right side of the vertebral column. However, a shift in its course to the middle/left side of the vertebral column, potentially as a result of aging, has been reported. The aim of this study was to understand the relationship between AV displacement and aging. MATERIALS AND METHODS Forty-seven(More)
A case of ulcerative colitis (UC) associated with anti-erythrocyte antibodies is reported. A 27-year-old male visited our department because of a relapse of UC, and his condition was diagnosed as severe and extensive colitis. He was vigorously treated with prednisolone (50mg/day i.v.) and TPN, but no response was obtained. Subtotal colectomy with ileostomy(More)