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find Author "邓候富" 4 results
  • Applications of 18F-Fluorodexyglucose Positron Emission Tomography on the Diagnosis and Treatment of Carcinoma of Large Intestine

    Objective To introduce the current study on 18F-fluorodexyglucose positron emission tomography (18F-FDG PET) scanning in diagnosis and treatment of carcinoma of large intestine. Methods The literatures about 18F-FDG PET scanning in diagnosis and treatment of carcinoma of large intestine in recent years were reviewed. Results 18F-FDG PET scanning is superior to CT and MRI in identificating carcinoma of large intestine recurrence, metastasis in the early stage after operation and staging carcinoma of large intestine. Conclusion 18F-FDG PET scanning may be one of the accessory examinations in carcinoma of large intestine and may be helpful for the choice of treatment.

    Release date:2016-08-28 04:43 Export PDF Favorites Scan
  • Long-term Quality Control of Philips-Precedence Dual-head Single Photon Emission Computed Tomography for Five Years

    ObjectiveTo improve health care quality and safety by monitoring the performance of PhilipsPrecedence Dual-head single photon emission computed tomography (SPECT). MethodsWith our own homemade point source and the center of rotation model, in accordance with NEMA standards and manufacturers' design conditions, these three indicators including energy peak position of the instrument, intrinsic uniformity and center of rotation were routinely tested between 2008 and 2012 for the Philips-Precedence Dual-head SPECT in our hospital. In addition, the quality control was performed twice a week, and every year the total number of quality control was basically the same. We calculated the results by the weighted average method. ResultsThe 5-year average energy peaks of detector 1 and 2 were (139.23±0.32) and (138.97±0.45) keV, respectively, and they were both within the range of reference values [(140±3) keV]. In addition, the results of center of rotation were also in the normal range, and kept stable. Based on the analysis of quality-control data, for detector 1, compared with the data of 2008, there was no significant diTherence for central field of vision (CFOV) and useful field of vision (UFOV) in these three years from 2009 to 2011 (P>0.05). The diTherence was only significant between data of 2008 and that of 2012 (P<0.05). For detector 2, compared with the data of 2008, there was no significant diTherence for CFOV and UFOV in 2009 and 2011(P>0.05), while there was significant diTherent in 2010 and 2012 (P<0.05). ConclusionThe uniformity of SPECT will gradually deteriorate with prolonged use. However, regular quality control and maintaining can keep the function stabilization, and enhance the availability rate.

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  • 正电子发射计算机断层显像/磁共振成像的临床应用新进展

    正电子发射计算机断层显像/磁共振成像这一新型设备和技术的出现,不仅为肿瘤学、神经精神疾病等的临床应用开辟了新的道路,还为干细胞治疗等基础科研提供新的平台。它不简单是一种单一的技术变革,而是一种多模式成像理念的体现、多种技术的完美整合,它将给现代和将来的医学发展模式带来重大的影响。

    Release date:2016-09-07 02:33 Export PDF Favorites Scan
  • Diagnostic Value of MRI versus 99Tcm-MDP Bone Scan in Osseous Metastasis of Prostate Cancer: A Meta-analysis

    This paper is aimed to assess the diagnostic value of MRI versus 99Tcm-methylene diphosphonate (99Tcm-MDP) bone scan (BS) for osseous metastases in patients with prostate cancer. The computer-based retrieval was conducted on PubMed, EMBASE, EBSCO, Web of Knowledge, the Cochrane Library and Ovid data bases to search for trials about diagnosing osseous metastases of prostate cancer with MRI and 99Tcm-MDP BS. Selected with time acceptance and time exclusion criteria, the data quality were evaluated with QUADAS quality assessment tool and collected. We used the Meta-Disc software to conduct meta-analysis, and then calculated the pooled sensitivity, specificity and diagnostic odds ratio (DOR), drew the summary receiving operating characteristic (SROC) curve, and measured the area under curve (AUC) and Q* value. Then five studies were included, involving 353 patients. The pooled sensitivity of MRI and BS was 0.95 (95% CI 0.90~0.98) and 0.67 (95% CI 0.58~0.75), respectively. The pooled specificity was 0.97 (95% CI 0.94~0.99) and 0.88 (95% CI 0.83~0.91), respectively. The pooled DOR was 402.99 (95% CI 119.05~1 364.15) and 23.85 (95% CI 1.32~431.48), respectively. The AUC was 0.990 1 and 0.624 1, respectively. The Q* was 0.958 7 and 0.593 8. It can well be concluded that MRI is more effective than 99Tcm-MDP BS in the diagnosis of osseous metastases in patients with prostate cancer.

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