| 1 | Clinical value of ^(18)F-FDG PET/CT in assessing suspicious relapse after rectal cancer resection显示文摘AIM:To evaluate the value of 18F-fluorodeoxyglucose positron emission tomography/computed tomography(18F-FDG PET/CT) in the restaging of resected rectal cancer.METHODS:From January 2007 to Sep 2008,21 patients who had undergone curative surgery resection for rectal carcinoma with suspicious relapse in conventional imaging or clinical findings were retrospectively enrolled in our study.The patients underwent 28 PET/CT scans(two patients had two scans,one patient had three and one had four scans).Locoregional recurrences and/or distant metastases were confirmed by histological analysis or clinical and imaging follow-up.RESULTS:Final diagnosis was confirmed by histopathological diagnosis in 12 patients(57.1) and by clinical and imaging follow-up in nine patients(42.9).Eight patients had extrapelvic metastases with no evidence of pelvic recurrence.Seven patients had both pelvic recurrence and extrapelvic metastases,and two patients had pelvic recurrence only.18F-FDG PET/CT was negative in two patients and positive in 19 patients.18F-FDG PET/CT was true positive in 17 patients and false positive in two.The accuracy of 18F-FDG PET/CT was 90.5,negative predictive value was 100,and positive predictive value was 89.5.Five patients with perirectal recurrence underwent 18F-FDG PET/CT image guided tissue core biopsy.18F-FDG PET/CT also guided surgical resection of pulmonary metastases in three patients and monitored the response to salvage chemotherapy and/or radiotherapy in four patients.CONCLUSION:18F-FDG PET/CT is useful for evaluating suspicious locoregional recurrence and distant metastases in the restaging of rectal cancer after curative resection. | Long Sun,Wei-Min Pan,Zuo-Ming Luo,Ji-Hong Wei,Long Zhao,Hua Wu,Minnan PET Center and Department of Nuclear Medicine,the First Hospital of Xiamen University,Xiamen 316003,Fujian Province,China Yong-Song Guan,State Key Laboratory of Biotherapy,West China Medical School,Sichuan University,Gaopeng Street,Keyuan Road 4,Chengdu 610041,Sichuan Province,China | 2009 | World Journal of Gastrointestinal Oncology2009，1，1： | 1 |
| 2 | Two-dimensional molecular crystalline semiconductors towards advanced organic optoelectronics显示文摘The compelling demand for higher performance and lower cost in the optoelectronics industry has driven the development of organic semiconductors.Molecular crystalline semiconductors(MCSs),especially two-dimensional MCSs(2D-MCSs),possess intrinsic ordered structure,quantum confinement effect,high mobility,unique optical and electrical properties,and more ecological and cheaper production,which make great promises in high-performance optoelectronic applications.Here we provide a review of design principles and synthetic strategies for 2D-MCS materials,exploiting their potential as a revolution option in associated optoelectronic devices.The merits and limitations of each strategy are presented,and these molecular crystals are considered as a competitive choice for emerging semiconducting materials in information science.Finally,the current challenges and future perspectives in this field are also elaborated. | Xuemei Dong Heshan Zhang Yinxiang Li Bin Liu Keyuan Pan Yijie Nie Mengna Yu Mustafa Eginligil Juqing Liu Wei Huang | 2022 | Nano Research2022，15，10： | 0 |
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