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1.
Eun Ji Han Sang‐Hoon Lee Hyung Sun Sohn Yong‐An Chung Soo Kyo Chung 《International journal of imaging systems and technology》2012,22(4):245-249
The testis shows physiologic uptake in flourine‐18 fluorodeoxyglucose (F‐18 FDG) positron emission tomography (PET). The purpose of this study was to examine the degree of FDG uptake of normal testis on PET/computed tomography (CT), especially in relationship to various clinical parameters. We obtained the maximum standardized uptake value (SUVmax) and the mean standardized uptake value (SUVmean) of each testis from PET/CT of 166 healthy men. We also calculated the testis‐to‐muscle (T/M) ratio, defined as the SUVmean of the testis divided by the SUVmean of the right thigh muscle. Subjects completed a questionnaire on their medical history and sexual habits, including frequency of sexual intercourse, latest date of sexual intercourse, and vasectomy history. We then evaluated the association between imaging parameters and sexual habits. The mean age of subjects was 48 ± 10 years (range, 21–74), and the mean volume of each testis was 17.1 ± 4.5 cm3 (range, 7.4–32.4). The mean SUVmax was 3.6 ± 0.5 (range, 2.2–5.5), the mean SUVmean was 2.5 ± 0.4 (range, 1.6–3.8), and the mean T/M ratio was 4.2 ± 0.8 (range, 2.3–7.3). Of the 166 subjects, 51 reported having sexual intercourse zero times per month and 109 had sexual intercourse at least per month. The interval between the latest date of sexual intercourse and PET/CT was less than 3 days in 48 subjects; between 3 days and 1 month in 58; and greater than 1 month in 60. Twenty subjects were currently vasectomized. The T/M ratio was significantly correlated with age (P = 0.040) but not with sexual habits. On the PET/CT, normal testicular FDG uptake decreased as age increased. © 2012 Wiley Periodicals, Inc. Int J Imaging Syst Technol, 22, 245–249, 2012 相似文献
2.
Toshiyuki Makino Yoshitatsu Ohara Namiko Kobayashi Yohei Kono Ayumu Nomizu Mariko Ichijo Yutaro Mori Noriaki Matsui Dai Kishida Takayuki Toda 《Hemodialysis international. International Symposium on Home Hemodialysis》2018,22(2):E19-E22
Familial Mediterranean Fever (FMF) is usually an autosomal recessive autoinflammatory disease characterized by recurrent attacks of fever and serositis. FMF develops before the age of 20 years in 90% of patients. It has intervals of 1 week to several years between attacks, which leads to renal dysfunction—amyloidosis. We report a case of atypical FMF that developed in a long‐term hemodialysis patient. A 65‐year‐old Japanese female undergoing hemodialysis for 32 years was referred to our hospital with a fever of unknown origin (FUO) following cervical laminoplasty. The fever occurred as recurrent attacks accompanied by oligoarthralgia of the left hip and knee. We suspected FMF because of recurrent self‐limited febrile attacks, although the patient showed atypical clinical features such as late‐onset and highly frequent attacks. After receiving treatment, she achieved a complete response to colchicine. Therefore, a diagnosis of FMF was made based on the Tel‐Hashomer criteria, which was confirmed by genetic testing. The case suggests that FMF may be of note in long‐term hemodialysis patients developing FUO. 相似文献
3.
Biodegradable polymers and their layered silicate nanocomposites: In greening the 21st century materials world 总被引：23，自引：0，他引：23
This review aims at highlighting on recent developments in preparation, characterization, properties, crystallization behaviors, melt rheology, processing, and future applications possibilities of biodegradable polymers and their layered silicate nanocomposites. These materials are attracting considerable interest in materials science research. Montmorillonite and hectorite are among the most commonly used smectite-type layered silicates for the preparation of nanocomposites. In their pristine form they are hydrophilic in nature, and this property makes them very difficult to disperse into biodegradable polymer matrices. The most common strategy to overcome this difficulty is to replace the interlayer clay cations with quarternized ammonium or phosphonium cations, preferably with long alkyl chains.
A wide range of biodegradable polymer matrices is described in this review with a special emphasis on polylactide because of more eco-friendliness from its origin as contrast to the fully petroleum-based biodegradable polymers and control of carbon dioxide balance after their composting.
Preparative techniques include (i) intercalation of polymers or prepolymers from solution, (ii) in situ intercalative polymerization method, and (iii) melt intercalation method.
This new family of composite materials frequently exhibits remarkable improvements of mechanical and material properties when compared with virgin polymers or conventional micro- and macro-composites. Improvements can include a high storage modulus both in solid and molten states, increased tensile and flexural properties, a decrease in gas permeability and flammability, increased heat distortion temperature and thermal stability, increase in the biodegradation rate, and so forth. 相似文献