[Experiment on the physical strength of porcelain shell faced jacket crown (I)].
Explore the source record for details and available documents.
Crowns↗
Biomedical subjects
H Ohtake
Publications and source records attributed to H Ohtake.
The value of detection of flow voids between the uterus and the leiomyoma with MRI.
Flow voids are occasionally seen between the uterus and the leiomyoma. This study was performed to determine the prevalence of this sign and its relation to tumor size and location, internal signal intensity of the leiomyomas, and the ease of detectability using different MR sequences. Also, to understand the pathologic causes for the phenomenon of flow voids. The MR images of the pelvis in 92 females with 359 uterine leiomyomas were analyzed. Flow voids located between the uterus and the leiomyomas were seen in 32 lesions on T1-weighted images and in 12 on T2-weighted images. Flow void was seen exclusively in leiomyomas of 3-cm diameter or larger. In five pedunculated subserous leiomyomas, flow voids were seen within the pedicle of the tumor. Large leiomyomas and leiomyomas with irregular signal intensity on T2-weighted images showed significantly greater frequency of signal void than other leiomyomas (P < .01). The sign was not seen in any other pelvic tumors. On pathologic evaluation, the flow voids were found to correspond to dilated feeding arteries located outside the capsule of the leiomyoma.
Adult↗
Prevalence of senile dementia in a rural community in Japan: the Tajiri project.
Knowledge of the prevalence of dementia in different age groups is needed for the planning of a health policy. This study shows the prevalence of dementia and magnetic resonance imaging (MRI) findings in elderly people aged 65 years and over, living in the town of Tajiri in the northern part of Japan. They were shown by two cognitive screening tests, the Mini-Mental State examination (MMS) and the Dementia Screening Test (DST) and medical diagnosis. Two subject groups were assessed, those who completed both tests (Subjects I, n=2066) and those from among the 200 'MRI-administered subjects' who were interviewed and diagnosed (Subjects II, n=170). For Subjects I, there were 6.3 and 10.2% 'dementia range' according to the severe and mild criteria, respectively. As for Subjects II, 9.4% were clinically diagnosed as having dementia. They met the National Institute of Neurological and Communicative Disorders and Stroke and the Alzheimer's Disease and Related Disorders Association (NINCDS-ADRDA) criteria of probable Alzheimer's disease (AD) or possible AD with cerebrovascular disease. The estimated prevalence rate of dementia was 8.0%. Visual ratings of brain atrophy using MRI disclosed two distribution patterns. The 'continuous' pattern of the frontal and temporal lobes atrophy suggest that both are affected by the aging process, while a 'discontinuous' pattern of the hippocampal atrophy could indicate a pathologic background such as early changes of AD.
Journal Article↗
Clear cell sarcoma arising in the retroperitoneum.
Clear cell sarcoma is a rare soft-tissue neoplasm, arising most commonly in the tendons and aponeuroses of young adults. We report here the first female case of clear cell sarcoma arising in the retroperitoneum with clinical features similar to those of malignant ovarian tumors. Aspects of clinical presentation, histopathologic evaluation, and treatment are described.
Adult↗
Frequency of abnormalities detected by abdominal ultrasound among Japanese adults.
Abdominal ultrasound examination was given to 715 (566 male and 149 female) adult non-manual workers in Tokyo as part of their annually required medical check-up. Gross abnormalities were found in 44.5% of males and 34.2% of females. The most common finding was fatty liver (15.2%), seen four times as frequently in males as in females. There were 93 elevated lesions in the gall-bladder in 56 subjects (7.8%); some required follow-up examinations because malignancy could not be excluded. Small cystic lesions were frequently seen in the kidney (6.4%) and in the liver (4.8%). Gallstones were found in 3.4%. Mild splenomegaly occurred in 3.4%. Ten mass lesions, 8 hyperechoic and 2 hypo-echoic, were found in the liver, but subsequent imaging studies showed them to be benign haemangiomas. Other changes found included calcific lesions in the liver (2.1%) and in the spleen (0.4%), renal stones (2.0%), thickened wall of the gall-bladder (3.2%), intramural stones (0.8%) and debris/sludge (0.4%) in the gall-bladder, dilated pancreatic duct (0.7%) and common bile duct (0.3%), liver cirrhosis (0.4%), hydronephrosis (0.1%), enlarged pancreas (0.1%), small pancreas (0.1%), ovarian tumour (0.1%), uterine tumour (0.1%), abnormally shaped kidney (0.1%) and situs inversus (0.1%). It was concluded that abdominal ultrasound is an important examination for a mass screening or a physical check-up commonly practised as the 'human dock' for adults in Japan.
Abdomen↗