Ultra-wide field fundus autofluorescence (FAF) imaging is a new noninvasive technique with an imaging range of about 200 °. It can detect peripheral retinal lesions that cannot be found in previous FAFs and more objectively reflect intracellular content and distribution of lipofuscin in the retinal pigment epithelium (RPE) and RPE cell metabolic status. The ultra-wide field FAF can find the abnormal autofluorescence (AF) in the peripheral retina of the eyes of age-related macular degeneration (AMD), and different AF manifestations may have an impact on the diagnosis and treatment of the different AMD subtypes. It is helpful to evaluate subretinal fluid in the eyes of central serous choroidal retinopathy and can accurately detect the changes in the outer retina of the eyes without subretinal fluid. It can help to determine the type of uveitis and fully display the evolution of the disease. It can also assess the peripheral photoreceptor cell layer and RPE in patients with retinal dystrophy and retinitis pigmentosa, and comprehensively evaluate their retinal function and monitor the progress of disease. It can also assist in the evaluation of the short-term efficacy and RPE cell function after the scleral buckling surgery for patients with rhegmatogenous retinal detachment. In the future, ultra-wide field FAF may change the knowledge and intervention strategy of ocular fundus diseases and promote the clinical and scientific research in this field.
ObjectiveThe diagnostic efficacy of long non-coding RNA (lncRNA) for tuberculosis was evaluated by systematic review. MethodsData from PubMed, Web of Science, Cochrane Library, Embase, CMJFD, CNKI and WanFang Data were searched. Literatures on the diagnostic value of lncRNA in tuberculosis from the database establishment to August 20, 2024 were selected, and the quality of literatures was assessed using QUADAS-2 tool. Meta-Disc 1.0 software tested the threshold heterogeneity of the included studies. Stata 18.0 software calculated sensitivity, specificity, positive likelihood ratio, negative likelihood ratio, diagnostic odds ratio and other effect sizes, and performed subgroup analysis and meta regression to explore the source of heterogeneity. Deeks funnel plot evaluates publication bias. Results A total of 28 case-control studies were included in 14 literatures. The meta-results showed that the combined sensitivity was 0.88 (95%CI 0.81 to 0.93), the specificity was 0.90 (95%CI 0.84 to 0.94), and the PLR was 9.05 (95%CI 5.16 to 15.87). The NLR and DOR were 0.13 (95%CI 0.08 to 0.22) and 67.96 (95%CI 27.27 to 169.39), and the AUC were 0.95 (95%CI 0.93 to 0.97). Subgroup analysis showed that lncRNA was more effective in the diagnosis of tuberculosis when PMBC samples, lncRNA expression was down-regulation, the study sample size was ≤100, there was cut-off value, GAPDH was used as the internal reference, and RNA extraction kit was used. meta regression indicated that lncRNA expression level and sample size were the main sources of heterogeneity. Conclusion LncRNA has high accuracy in the diagnosis of tuberculosis, and is expected to become a new biomarker to assist the diagnosis of tuberculosis.
ObjectiveTo evaluate the value of computed tomography examination in the clinical diagnosis guidance and therapeutic effect assessment for patients with uremic pneumonia. MethodsWe reviewed the clinical situation and pathogenesis turnover of 64 cases of uremic pneumonia from February 2011 to January 2013,and analyzed the correlation between image modification and treatment effectiveness. ResultsSixty-four cases of uremic pneumonia had different image manifestations in each phase of the disease course,including 27 cases of pulmonary venous pleonaemia,51 of lung interstitial edema,8 of pulmonary alveoli effusion,and 15 of pulmonary interstitial fibrosis.Dropsy of serous cavity and the heart shape could be viewed by CT scanning.CT rechecking was carried out after hemodialysis and symptom-targeted treatment.The results showed that CT results of 27 cases of pulmonary venous pleonaemia,51 cases of edema in the interstitial tissue and 41 cases of pleural effusion changed significantly after treatment (P<0.001);the image manifestations of 8 cases of pulmonary alveoli edema also changed significantly (P<0.05);the CT result of 15 cases of pulmonary interstitial fibrosis had no change;six cases among the fourteen cases of pericardial effusion were not absorbed by treatment (P>0.05). ConclusionThe diagnosis of uremic pneumonia mainly depends on imaging results.CT scanning plays an important role on the determination of clinical stage,the choice of therapeutic method,and evaluation of curative effect for uremic pneumonia.
ObjectiveTo systematically review the diagnostic value of FDG-PET, Aβ-PET and tau-PET for Alzheimer ’s disease (AD).MethodsPubMed, EMbase, The Cochrane Library, CNKI, WanFang Data, VIP and CBM databases were electronically searched to collect diagnostic tests of FDG-PET, Aβ-PET and tau-PET for AD from January 2000 to February 2020. Two reviewers independently screened literature, extracted data and assessed the risk of bias of included studies; then, meta-analysis was performed by Meta-Disc 1.4 and Stata 14.0 software.ResultsA total of 31 studies involving 3 718 subjects were included. The results of meta-analysis showed that, using normal population as control, the sensitivity/specificity of FDG-PET and Aβ-PET in diagnosing AD were 0.853/0.734 and 0.824/0.771, respectively. Only 2 studies were included for tau-PET and meta-analysis was not performed.ConclusionsFDG-PET and Aβ-PET can provide good diagnostic accuracy for AD, and their diagnostic efficacy is similar. Due to limited quality and quantity of the included studies, more high quality studies are required to verify the above conclusions.
ObjectiveTo observe the pathological changes of central retinal artery occlusion (CRAO) by optical coherence tomography (OCT).MethodsFifty-three eyes of 53 patients who were diagnosed as CRAO in our center between January 2001 to January 2004 underwent the examination by OCT. The intervals between the disease onset and OCT examination were less than 2 weeks. The scan modes of OCT were horizontal or vertical line scan. The locations of scanning were macular, posterior pole of retina, optical papilla and the focus of bleeding or exudation.ResultsThe OCT pathological changes of CRAO in vivo includes increase of retinal thickness and reflex of retina, width of dark layer of photoreceptor (edema), edema or cystoid edema of fovea, retinal bleeding, cotton-wool spot and papilla edema. Four patients who had ciliary retinal artery showed normal retinal structure in the supply region of ciliary retinal artery.ConclusionOCT can display the pathological changes of retinal tissues in CRAO in vivo, especially on the old patients or the patients with systemic disease who were contraindicated by FFA. The unique OCT image of pathological changes of CRAO supply the objective signs for the instant clinical diagnosis.(Chin J Ocul Fundus Dis, 2005,21:74-78)
Objective To assess the quality of diagnostic studies on detecting the tuberculosis antibody to diagnose tuberculosis.Methods CBM (1978 to 2006) and VIP (1994 to 2006) were searched; any author-claimed diagnostic studies which used the dot immunogold filtration assay (DIGFA) to detect the tuberculosis antibody and to diagnose tuberculosis were included. The Quality Assessment of Diagnostic Accuracy Studies (QUADAS) was used to assess the quality of included diagnostic studies by two reviewers independently.Results Thirty-eight papers were included and assessed. We found that most of the quality items were not met with QUADAS. Most papers adopted the retrospective diagnostic case-control design. Thirty-one papers did not describe the selection criteria clearly, 18 did not describe whether all the included patients were verified by using a reference standard of diagnosis, 36 did not describe whether the index test results were interpreted without knowledge of the results of the reference standard, 37 did not report the uninterpretable/intermediate test results, and 34 did not report the withdrawals from the study.Conclusion There are few high quality studies on using DIGFA to detect tuberculosis antibody to diagnose tuberculosis.
ObjectiveTo systematically review the diagnostic value of the combined test of serum CA153, CA125 and CEA in detection of breast cancer. MethodsClinical diagnostic tests about CA153, CA125 and CEA in patients with breast cancer were retrieved in PubMed, EMbase, CBM, The Cochrane Library (Issue 3, 2014), CNKI, VIP, and WanFang Data from January 1st, 2004 to April 16st, 2014. References of included literature were also retrieved. Literature screening according to the inclusion and exclusion criteria, data extraction and methodological quality assessment were completed by two reviewers independently. Meta-analysis was then conducted using Meta-Disc 1.4 software. ResultsA total of 21 studies involving 4 263 subjects were enrolled. In all studies, the results of meta-analysis indicated that:the DOR, AUC and Q index of the single test (CA153) were 18.71 (95%CI 11.62 to 30.11), 0.858 9, and 0.789 7; while those of the combined test (CA153, CA125 and CEA) were 37.95 (95%CI 21.97 to 65.57), 0.959 1, 0.903 1. Compared with the single test, the diagnostic efficacy of the combined test was higher (Z=3.675, P=0.001 5). ConclusionCompared with the detection of CA153 alone, the combined detection of CA125, CA153 and CEA has higher efficacy and accuracy in the diagnosis of breast cancer.
Objective To evaluate whether the paper titled “Application of tumor type M2 pyruvate kinase in the diagnosis of lung cancer” met the standards set in the STARD statement. Methods Based on each of the 25 items of STAndards for the Reporting of Diagnostic accuracy studies (STARD statement), the paper titled “Application of tumor type M2 pyruvate kinase in the diagnosis of lung cancer” was checked and evaluated. Results In the paper titled “Application of tumor type M2 pyruvate kinase in the diagnosis of lung cancer”, the reporting of 1 item of the STARD statement was adequately standardized, 7 items were relatively standardized, 5 items were inadequately standardized, 2 items were not standardized, and the other 10 were not reported. Conclusion Generally speaking, the reporting of diagnostic accuracy studies has not been standardized adequately in China. The methodological quality and applicability of diagnostic accuracy studies should be improved.