middle aged

中老年人
  • 文章类型: Journal Article
    背景:游戏障碍(GD)是国际疾病分类中的新官方诊断,第11次修订,随着它的认可,为这种情况提供治疗的必要性已经变得显而易见。需要更多关于这组患者所需的治疗类型的知识。
    目的:本研究旨在评估基于认知行为疗法和家庭治疗的新型基于模块的GD心理治疗的有效性和可接受性。
    方法:本研究是一项非随机干预研究,进行预测试,后测,和3个月的后续设计。它将评估GD症状的变化,心理困扰,和游戏时间,除了治疗满意度,工作联盟,以及对患者和亲属治疗经验的定性探索。
    结果:这项研究于2022年3月开始,预计招募将于2024年8月结束。
    结论:这项研究评估了有问题的游戏行为和GD患者的心理治疗的有效性和可接受性。这是一项有效性试验,将在常规护理中进行。这项研究将具有很高的外部有效性,并确保结果与精神病合并症的不同临床人群相关。
    背景:ClinicalTrials.govNCT06018922;https://clinicaltrials.gov/study/NCT06018922。
    DERR1-10.2196/56315。
    BACKGROUND: Gaming disorder (GD) is a new official diagnosis in the International Classification of Diseases, 11th Revision, and with its recognition, the need to offer treatment for the condition has become apparent. More knowledge is needed about the type of treatment needed for this group of patients.
    OBJECTIVE: This study aims to evaluate the effectiveness and acceptability of a novel module-based psychological treatment for GD based on cognitive behavioral therapy and family therapy.
    METHODS: This study is a nonrandomized intervention study, with a pretest, posttest, and 3-month follow-up design. It will assess changes in GD symptoms, psychological distress, and gaming time, alongside treatment satisfaction, working alliance, and a qualitative exploration of patients\' and relatives\' experiences of the treatment.
    RESULTS: This study started in March 2022 and the recruitment is expected to close in August 2024.
    CONCLUSIONS: This study evaluates the effectiveness and acceptability of a psychological treatment for patients with problematic gaming behavior and GD. It is an effectiveness trial and will be conducted in routine care. This study will have high external validity and ensure that the results are relevant for a diverse clinical population with psychiatric comorbidity.
    BACKGROUND: ClinicalTrials.gov NCT06018922; https://clinicaltrials.gov/study/NCT06018922.
    UNASSIGNED: DERR1-10.2196/56315.
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  • 文章类型: Journal Article
    胃肠道功能在营养吸收和整体消化健康中起着关键作用。胃排空异常与2型糖尿病密切相关。影响血糖调节并引起胃肠道症状。本研究旨在调查和比较分段运输时间,运动性指数,格陵兰因纽特人和有或没有2型糖尿病的丹麦个体之间的微环境。我们包括了44名格陵兰因纽特人,其中23人患有2型糖尿病,以及年龄和性别匹配的丹麦人。分段运输时间,运动性,和腔环境使用SmartPill®测量。格陵兰对照显示较短的胃排空时间(GET)(163分钟),与2型糖尿病的格陵兰人相比,胃的中位pH(2.0pH)和十二指肠中位收缩(18.2mmHg)更高(GET:235分钟,pH:1.9,中位十二指肠收缩18.4mmHg)和丹麦对照(GET:190,pH:1.2中位十二指肠收缩17.5mmHg)。尽管有类似的抗糖尿病管理努力,胃肠道生理学的变化是明显的,强调糖尿病的复杂性及其与种族的相互作用,暗示潜在的饮食甚至遗传影响,强调个性化糖尿病管理方法的必要性。最后,这项研究为未来的研究开辟了可能性,鼓励研究与遗传学相关的潜在机制,饮食,和胃生理学,因为对因素的理解可以导致更有效的,为不同人群的糖尿病护理和改善消化系统健康量身定制的策略。
    Gastrointestinal function plays a pivotal role in nutrient absorption and overall digestive health. Abnormal gastric emptying is closely linked to type 2 diabetes, impacting blood glucose regulation and causing gastrointestinal symptoms. This study aims to investigate and compare segmental transit times, motility indices, and micromilieu between Greenlandic Inuit and Danish individuals with and without type 2 diabetes. We included forty-four Greenlandic Inuit, twenty-three of whom had type 2 diabetes, and age and gender-matched Danish individuals. Segmental transit time, motility, and luminal environment were measured using the SmartPill®. Greenlandic controls displayed shorter gastric emptying time (GET) (163 min), higher gastric median pH (2.0 pH) and duodenal median contractions (18.2 mm Hg) compared to Greenlanders with type 2 diabetes (GET: 235 min, pH:1.9, median duodenal contraction 18.4 mm Hg) and Danish controls (GET: 190, pH:1.2 median duodenal contraction 17.5 mmHg). Despite similar anti-diabetic management efforts, variations in gastrointestinal physiology were evident, highlighting the complexity of diabetes and its interaction with ethnicity, suggesting potential dietary or even genetic influences, emphasising the necessity for personalised diabetes management approaches. Finally, the study opens possibilities for future research, encouraging investigations into the underlying mechanisms linking genetics, diet, and gastric physiology, as an understanding of factors can lead to more effective, tailored strategies for diabetes care and improved digestive health in diverse populations.
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  • 文章类型: Journal Article
    目的:探讨使用自然语言处理(NLP)的连续计算机断层扫描(CT)放射学报告对胰腺癌生存的预测潜力。
    方法:基于深度迁移学习的NLP模型进行了回顾性训练和测试,免费CT报告,并提取韩国某三级医院连续诊断为胰腺癌患者的生存信息。随机选择的胰腺癌患者及其来自美国独立三级医院的系列CT报告被纳入外部测试数据集。预测生存率和实际生存率的一致性指数(c指数),计算预测1年生存率的受试者工作特征曲线下面积(AUROC)。
    结果:在2004年1月至2021年6月之间,将2,677例患者和12,255例CT报告和670例患者和3,058例CT报告分配到培训和内部测试数据集,分别。ClinicalBERT(来自变压器的双向编码器表示)模型在单个模型上训练,首次CT报告显示,预测胰腺癌患者总生存期的c指数为0.653,AUROC为0.722.ClinicalBERT对最初报告的15份连续报告进行了培训,显示c指数为0.811,AUROC为0.911。在273例患者的外部测试装置上,有1,947例CT报告,AUROC为0.888,表明我们的模型具有普适性。进一步的分析表明,我们的模型的上下文解释超出了特定的短语。
    结论:基于深度迁移学习的NLP模型可以预测胰腺癌患者的生存率。临床决策可以由开发的模型支持,仅从连续放射学报告中提取生存信息。
    OBJECTIVE: To explore the predictive potential of serial computed tomography (CT) radiology reports for pancreatic cancer survival using natural language processing (NLP).
    METHODS: Deep-transfer-learning-based NLP models were retrospectively trained and tested with serial, free-text CT reports, and survival information of consecutive patients diagnosed with pancreatic cancer in a Korean tertiary hospital was extracted. Randomly selected patients with pancreatic cancer and their serial CT reports from an independent tertiary hospital in the United States were included in the external testing data set. The concordance index (c-index) of predicted survival and actual survival, and area under the receiver operating characteristic curve (AUROC) for predicting 1-year survival were calculated.
    RESULTS: Between January 2004 and June 2021, 2,677 patients with 12,255 CT reports and 670 patients with 3,058 CT reports were allocated to training and internal testing data sets, respectively. ClinicalBERT (Bidirectional Encoder Representations from Transformers) model trained on the single, first CT reports showed a c-index of 0.653 and AUROC of 0.722 in predicting the overall survival of patients with pancreatic cancer. ClinicalBERT trained on up to 15 consecutive reports from the initial report showed an improved c-index of 0.811 and AUROC of 0.911. On the external testing set with 273 patients with 1,947 CT reports, the AUROC was 0.888, indicating the generalizability of our model. Further analyses showed our model\'s contextual interpretation beyond specific phrases.
    CONCLUSIONS: Deep-transfer-learning-based NLP model of serial CT reports can predict the survival of patients with pancreatic cancer. Clinical decisions can be supported by the developed model, with survival information extracted solely from serial radiology reports.
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  • 文章类型: Journal Article
    目的:尽管脐尿管(U)和非脐尿管(NU)膀胱腺癌(adenoCas)在组织学上有一些相似之处,它们的位置不同,有时在治疗选择上也不同。我们分析了这些肿瘤实体之间的基因组改变(GA)的差异,目的是确定临床试验的潜在治疗靶点。
    方法:总的来说,分析了133U和328NUadenoCas。进行基于混合捕获的综合基因组谱分析(CGP)以评估所有类别的GA。使用经过验证的体细胞种系计算方法预测GA的种系状态。CGP使用基础一号和基础一号CDx测定法(基础医学,公司)。
    结果:U和NU队列中最常见的GA包括TP53(86.5%v81.1%)和KRAS(34.6%v27.7%)。结直肠腺样体的GAs特征,如SMAD4(P=.069)和GNAS(P=.071),在U和NU中更常见。相反,TERT(P<.01)和RB1(P=.071)在NU腺苷酸中更为普遍。值得注意的是,在PIK3CA(7.5%v7.9%)和ERBB2(6.8%v7.6%)中,U和NUadenoCas均表现出可能靶向的GA.与抗PD-1/L1的潜在益处相关的生物标志物很少见。U和NU的中位肿瘤突变负荷为每兆碱基2.6和3.5个突变,分别,PD-L1表达>1%是罕见的。两种肿瘤类型的基因组祖先和基因组特征分布相似。GA最常见的是体细胞性质。局限性包括缺乏临床数据,肿瘤异质性,和回顾性性质。
    结论:U和NUAdenoCAs揭示了GA的差异,PIK3CA和ERBB2被确定为推定的治疗靶标。抗PD-(L)1反应的生物标志物并不常见。结果突出了CGP个性化膀胱腺样体治疗方案并为临床试验设计提供信息的潜力。
    OBJECTIVE: Although both urachal (U) and nonurachal (NU) bladder adenocarcinomas (adenoCas) share several histologic similarities, they differ in location and sometimes in therapeutic options. We analyzed the differences in genomic alterations (GAs) between these tumor entities, with the aim of identifying potential therapeutic targets for clinical trials.
    METHODS: Overall, 133 U and 328 NU adenoCas were analyzed. Hybrid capture-based comprehensive genomic profiling (CGP) was performed to evaluate all classes of GA. Germline status of GA was predicted using a validated somatic-germline computational method. CGP was performed using the FoundationOne and FoundationOne CDx assays (Foundation Medicine, Inc).
    RESULTS: The most frequent GA in both U and NU cohorts included TP53 (86.5% v 81.1%) and KRAS (34.6% v 27.7%). GAs characteristic of colorectal adenoCa, such as SMAD4 (P = .069) and GNAS (P = .071), were more common in U versus NU. Conversely, TERT (P < .01) and RB1 (P = .071) were more prevalent in NU adenoCa. Notably, both U and NU adenoCas exhibited possibly targetable GA in PIK3CA (7.5% v 7.9%) and ERBB2 (6.8% v 7.6%). Biomarkers associated with potential benefit from anti-PD-1/L1 were infrequent. Median tumor mutational burden was 2.6 and 3.5 mutations per megabase for U and NU, respectively, and PD-L1 expression >1% was rare. Genomic ancestry and genomic signature distribution were similar in both tumor types. GAs were most commonly of somatic nature. Limitations include lack of clinical data, tumor heterogeneity, and retrospective nature.
    CONCLUSIONS: U and NU adenoCAs revealed differences in GA, with PIK3CA and ERBB2 being identified as putative therapeutic targets. Biomarkers of response to anti-PD-(L)1 were uncommon. Results highlight the potential of CGP to personalize treatment options of bladder adenoCa and inform clinical trial designs.
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  • 文章类型: Journal Article
    目的:脑淀粉样血管病(CAA)相关的大叶性脑出血(ICH)具有很高的复发风险,但是潜在的机制仍然不确定。我们,因此,旨在表征复发性ICH的模式。
    方法:我们研究了2个大型队列中的早期复发性ICH(在指示事件后90天内≥1例复发性ICH事件)和ICH集群(在任何时间点90天内≥2例ICH事件)。
    结果:在682名患者中(中位年龄68岁,40.3%女性,中位随访时间4.1年),18例(2.6%)早期复发性ICH,这与较高的年龄和CAA有关。在可能患有CAA的患者中,与第4~12个月相比,前3个月内早期复发性ICH的风险增加了5倍(风险比5.41,95%CI2.18~13.4),而在无CAA的患者中没有观察到显著差异.在ICH集群的患者中,我们观察到空间聚集性(63.0%的指数ICH附近复发ICH)和多次序贯出血的趋势(44.4%的3个月内≥3个ICH病灶).
    结论:我们的数据提供了CAA中ICH的时间和空间聚类的证据,提示一个短暂的和局部的活动性出血倾向的过程。
    OBJECTIVE: Cerebral amyloid angiopathy (CAA)-associated lobar intracerebral hemorrhage (ICH) has a high risk of recurrence, but the underlying mechanisms remain uncertain. We, therefore, aimed to characterize patterns of recurrent ICH.
    METHODS: We investigated early recurrent ICH (≥1 recurrent ICH event within 90 days of the index event) and ICH clusters (≥2 ICH events within 90 days at any time point) in 2 large cohorts of consecutive patients with first-ever ICH and available MRI.
    RESULTS: In 682 included patients (median age 68 years, 40.3% female, median follow-up time 4.1 years), 18 (2.6%) had an early recurrent ICH, which was associated with higher age and CAA. In patients with probable CAA, the risk of early recurrent ICH was increased 5-fold within the first 3 months compared with during months 4-12 (hazard ratio 5.41, 95% CI 2.18-13.4) while no significant difference was observed in patients without CAA. In patients with an ICH cluster, we observed spatial clustering (recurrent ICH within close proximity of index ICH in 63.0%) and a tendency for multiple sequential hemorrhages (≥3 ICH foci within 3 months in 44.4%).
    CONCLUSIONS: Our data provide evidence of both temporal and spatial clustering of ICH in CAA, suggesting a transient and localized active bleeding-prone process.
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  • 文章类型: Journal Article
    目的:中风死亡率在墨西哥等低收入和中等收入国家更为常见。预后数据通常依赖于短期医院随访,揭示了由于全身并发症和早期复发导致的高死亡率。我们旨在通过检查全因死亡率和特定原因死亡率来探讨卒中的长期影响。
    方法:我们分析了墨西哥城前瞻性研究(1998-2004)的数据,已知死亡率结果直至2022年12月。比较卒中参与者和非卒中参与者的基线变量。Cox比例风险回归评估了每个变量对总死亡率的贡献。卒中亚组的后续分析旨在确定死亡的独特危险因素,使用根据年龄调整的Cox回归模型,性别,和中风后的时间。
    结果:在145,537名合格参与者中,1,492(1.0%)有中风史。中风的参与者年龄较大(57.58vs50.16,p<0.001);每周平均收入较低(108.24美元vs176.14美元,p<0.001);饮酒和吸烟频率较高;合并症如高血压(48.9vs19.3%,p<0.001),糖尿病(23.4vs12.9%,p<0.001),和缺血性心脏病(5.4vs1.0%,p<0.001)。他们因任何原因死亡的风险显着增加(风险比[HR]2.59,95%CI2.37-2.83,p<0.001)。中风死亡的参与者更有可能是男性,糖尿病患病率较高,高血压,腰臀指数异常.卒中增加心源性死亡的风险(HR3.56,95%CI3.02-4.19,p<0.001),肾(HR2.05,95%CI1.58-2.66,p<0.001),和肺原因(HR2.29,95%CI1.79-2.92,p<0.001)。
    结论:本研究证实卒中与较高的死亡率有关,尤其是来自心脏,肾,以及墨西哥的肺部原因。它强调了中风和有中风史死亡的参与者中心血管合并症和不良社会经济状况的患病率升高。
    OBJECTIVE: Stroke mortality is more common in low-income and middle-income nations such as Mexico. Prognosis data typically rely on short-term hospital follow-ups, revealing high mortality rates due to systemic complications and early recurrence. We aim to explore stroke\'s long-term impact by examining all-cause and cause-specific mortality.
    METHODS: We analyzed data from the Mexico City Prospective Study (1998-2004) with known mortality outcomes until December 2022. Baseline variables were compared between participants who had stroke and nonstroke participants. Cox proportional hazard regression assessed each variable\'s contribution to overall mortality. Subsequent analysis within the stroke subgroup aimed to identify unique risk factors of mortality, using Cox regression models adjusted for age, sex, and time since stroke.
    RESULTS: Among 145,537 eligible participants, 1,492 (1.0%) had a history of stroke. Participants who had stroke were older (57.58 vs 50.16, p < 0.001); had lower mean weekly income ($108.24 vs $176.14, p < 0.001); had higher alcohol intake and smoking frequency; and had more frequent comorbidities such as hypertension (48.9 vs 19.3%, p < 0.001), diabetes (23.4 vs 12.9%, p < 0.001), and ischemic heart disease (5.4 vs 1.0%, p < 0.001). They had a significantly increased risk of death from any cause (hazard ratio [HR] 2.59, 95% CI 2.37-2.83, p < 0.001). Deceased participants with stroke were more likely to be male, with a higher prevalence of diabetes, hypertension, and abnormal waist-hip index. Stroke increased the risk of death from cardiac (HR 3.56, 95% CI 3.02-4.19, p < 0.001), renal (HR 2.05, 95% CI 1.58-2.66, p < 0.001), and pulmonary (HR 2.29, 95% CI 1.79-2.92, p < 0.001) causes.
    CONCLUSIONS: This study confirms stroke\'s association with higher mortality rates, especially from cardiac, renal, and pulmonary causes in Mexico. It underscores the elevated prevalence of cardiovascular comorbidities and adverse socioeconomic profiles among participants who had stroke and those who died with a history of stroke.
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  • DOI:
    文章类型: Journal Article
    本文的目的是报告2例非手术牙髓治疗与大皮质骨穿孔相关的根尖周病变,并回顾有关非手术牙髓治疗的临床疗效的文献,以从已发表的病例报告中获得见解。大,2例囊肿样根尖周病变采用根管联合治疗方法成功治疗,抗菌治疗(氢氧化钙和三重抗生素糊剂[TAP]),和运河空间的矿物三氧化物聚集体(MTA)闭塞。在这两种情况下,器械延伸超过根尖孔1毫米,以促进通过根管引流。因为据推测根尖周病变可能是囊性的。仪表之后,将TAP放置在管道空间内,以帮助牙齿的消毒和愈合,牙髓,和根尖条件。在这两个病人中,牙齿在随访检查时无症状且具有功能性(病例1,3年;病例2,30个月).支持2例临床病例的积极结果,已发表的文献表明,使用生物相容性材料,如MTA,可以促进羟基磷灰石的沉积,有可能促进组织再生和大的根尖周病变的愈合。
    The objectives of this article are to report 2 cases of nonsurgical endodontic treatment for the management of periapical lesions associated with large cortical bone perforations and review the literature on the clinical efficacy of nonsurgical endodontic treatment to draw insights from published case reports. Large, cyst-like periapical lesions in 2 patients were successfully treated with combined modalities of root canal treatment, antimicrobial therapy (calcium hydroxide and triple antibiotic paste [TAP]), and mineral trioxide aggregate (MTA) obturation of the canal space. In both cases, instrumentation was extended 1 mm beyond the apical foramen to facilitate drainage through the root canal, because it was assumed that the periapical lesion could be cystic. After instrumentation, TAP was placed within the canal space to aid in disinfection and healing of the dental, pulpal, and periapical conditions. In both patients, the teeth were asymptomatic and functional at follow-up examinations (case 1, 3 years; case 2, 30 months). Supporting the positive outcomes in the 2 clinical cases, the published literature suggests that the use of biocompatible materials such as MTA, which can promote the deposition of hydroxyapatite, has the potential to contribute to tissue regeneration and the healing of large periapical lesions.
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  • 文章类型: Journal Article
    前列腺癌是全球男性中第二常见的肿瘤。遗传易感性和祖先遗产是公认的风险因素,可以解释不同种族之间的差异趋势。人口,甚至在同一国家的地区。Y染色体已被认为是男性健康的原型生物标志物。非洲,欧洲,中东,西班牙裔祖先表现出这种瘤形成的最高发生率;亚洲人的发病率最低。尽管如此,拉丁裔男性几乎没有探索祖先模式的贡献。墨西哥人口具有极其多样化的遗传结构,所有上述祖先背景都融合在一起。跨种族研究可以阐明前列腺癌的病因,涉及到迁徙模式,创始人的影响,以及种族对其不同发病率的贡献。通过对墨西哥混血儿男性的病例对照研究(152例病例和372例对照),探索了祖先遗产对前列腺癌风险的贡献。使用17颗微卫星使用两种贝叶斯预测方法来追溯祖先遗产。谱系R1a似乎有助于前列腺癌(或调整:8.04,95CI:1.41-45.80)的发展,而E1b1a/E1b1b和GHIJ有助于分化良好(格里森≤7),和晚期前列腺癌.荟萃分析加强了我们的发现。上述血统与中东和北非人口有联系,丰富了伊比利亚半岛东南部地区的父系多样性。随着西班牙和塞法迪姆的迁徙,这种祖先的遗产到达了新世界。我们的发现加强了家族史和种族背景对前列腺癌风险的贡献,尽管应该使用大样本量来确认。尽管如此,鉴于其复杂的病因,除了遗传成分,生活方式和异种生物暴露也会影响获得的结果。
    Prostate cancer is the second most common neoplasia amongst men worldwide. Hereditary susceptibility and ancestral heritage are well-established risk factors that explain the disparity trends across different ethnicities, populations, and regions even within the same country. The Y-chromosome has been considered a prototype biomarker for male health. African, European, Middle Eastern, and Hispanic ancestries exhibit the highest incidences of such neoplasia; Asians have the lowest rates. Nonetheless, the contribution of ancestry patterns has been scarcely explored among Latino males. The Mexican population has an extremely diverse genetic architecture where all the aforementioned ancestral backgrounds converge. Trans-ethnic research could illuminate the aetiology of prostate cancer, involving the migratory patterns, founder effects, and the ethnic contributions to its disparate incidence rates. The contribution of the ancestral heritage to prostate cancer risk were explored through a case-control study (152 cases and 372 controls) study in Mexican Mestizo males. Seventeen microsatellites were used to trace back the ancestral heritage using two Bayesian predictor methods. The lineage R1a seems to contribute to prostate cancer (ORadjusted:8.04, 95%CI:1.41-45.80) development, whereas E1b1a/E1b1b and GHIJ contributed to well-differentiated (Gleason ≤ 7), and late-onset prostate cancer. Meta-analyses reinforced our findings. The mentioned lineages exhibited a connection with the Middle Eastern and North African populations that enriched the patrilineal diversity to the southeast region of the Iberian Peninsula. This ancestral legacy arrived at the New World with the Spanish and Sephardim migrations. Our findings reinforced the contribution of family history and ethnic background to prostate cancer risk, although should be confirmed using a large sample size. Nonetheless, given its complex aetiology, in addition to the genetic component, the lifestyle and xenobiotic exposition could also influence the obtained results.
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  • 文章类型: Journal Article
    目的:桡骨远端骨折(DRF)约占65岁以上患者骨折的18%。虽然普通射线照片是标准的,高分辨率计算机断层扫描(CT)对诊断至关重要的详细成像的价值,预后,和干预计划,并且越来越得到认可。CT扫描的高清3D重建对于骨科3D打印等应用以及移动C臂CT在骨科诊断中的应用至关重要。然而,对某些设备的辐射暴露和次优图像分辨率的担忧需要探索先进的计算技术,以改善CT成像而不损害安全性。因此,本研究旨在利用条件生成对抗网络(cGAN)来提高3mmCT图像的分辨率(CT增强)。
    方法:在机构审查委员会批准后,收集了11例DRFs患者的3mm-1mm配对CT数据。cGAN用于提高3mmCT图像的分辨率以匹配1mm图像(CT增强)。采用两种不同的方法来训练和生成CT图像。在方法1中,将3mm的CT原始图像用作输入,目的是生成1mm的CT原始图像。方法2旨在强调3mm和1mm图像之间的差值;使用3mmCT原始图像作为输入,它产生了3毫米和1毫米CT扫描之间的图像值的差异。两种定量指标,例如峰值信噪比(PSNR),均方误差(MSE),和结构相似性指数(SSIM),由两名骨科医师进行定性评估,通过评估等级(1〜4,低数意味着高质量的分辨率)来评估图像质量。
    结果:定量评估表明,我们提出的技术,特别强调方法2中的差值,在实现更高的图像分辨率方面始终优于传统方法。在两名临床医生的定性评估中,来自方法2的图像显示出更好的图像质量(等级:方法1,2.7;方法2,2.2)。对于具有1mm切片图像的相似图像,在方法2中发现了更多选择(15vs7,p=201)。
    结论:在我们利用cGAN增强CT成像分辨率的研究中,作者发现这种方法,它关注3毫米和1毫米图像之间的差值(方法2),一直跑赢大盘。
    OBJECTIVE: Distal radius fractures (DRFs) account for approximately 18% of fractures in patients 65 years and older. While plain radiographs are standard, the value of high-resolution computed tomography (CT) for detailed imaging crucial for diagnosis, prognosis, and intervention planning, and increasingly recognized. High-definition 3D reconstructions from CT scans are vital for applications like 3D printing in orthopedics and for the utility of mobile C-arm CT in orthopedic diagnostics. However, concerns over radiation exposure and suboptimal image resolution from some devices necessitate the exploration of advanced computational techniques for refining CT imaging without compromising safety. Therefore, this study aims to utilize conditional Generative Adversarial Networks (cGAN) to improve the resolution of 3 mm CT images (CT enhancement).
    METHODS: Following institutional review board approval, 3 mm-1 mm paired CT data from 11 patients with DRFs were collected. cGAN was used to improve the resolution of 3 mm CT images to match that of 1 mm images (CT enhancement). Two distinct methods were employed for training and generating CT images. In Method 1, a 3 mm CT raw image was used as input with the aim of generating a 1 mm CT raw image. Method 2 was designed to emphasize the difference value between the 3 mm and 1 mm images; using a 3 mm CT raw image as input, it produced the difference in image values between the 3 mm and 1 mm CT scans. Both quantitative metrics, such as peak signal-to-noise ratio (PSNR), mean squared error (MSE), and structural similarity index (SSIM), and qualitative assessments by two orthopedic surgeons were used to evaluate image quality by assessing the grade (1~4, which low number means high quality of resolution).
    RESULTS: Quantitative evaluations showed that our proposed techniques, particularly emphasizing the difference value in Method 2, consistently outperformed traditional approaches in achieving higher image resolution. In qualitative evaluation by two clinicians, images from method 2 showed better quality of images (grade: method 1, 2.7; method 2, 2.2). And more choice was found in method 2 for similar image with 1 mm slice image (15 vs 7, p = 201).
    CONCLUSIONS: In our study utilizing cGAN for enhancing CT imaging resolution, the authors found that the method, which focuses on the difference value between 3 mm and 1 mm images (Method 2), consistently outperformed.
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  • 文章类型: Journal Article
    在需要雄心勃勃的环境管理举措来保护和恢复水生生态系统的时候,公众对支撑环境政策和决策的科学的信任正在减弱。公众信任度的下降与错误信息的增加同时发生,并威胁要破坏公众对,和参与,环境保护。我们的研究调查了与大堡礁(GBR)及其流域的保护和管理相关的科学不信任的患病率和预测因素。使用GBR地区1877名居民的调查数据,我们确定环境价值,感知,以及与科学不信任相关的态度。我们的结果包括GBR科学信任和怀疑的类型学。持科学怀疑态度的受访者,占我们样本的31%,可能会认为航道管理决策不公平,觉得不那么负责任,与那些对科学有更大信任的人相比,他们对改善水道健康的积极性较低。对科学持怀疑态度的受访者对水道的某些威胁也有不同的看法,特别是气候变化。然而,对科学信任程度不同的受访者之间的相似性和“共同点”包括对水道生态系统服务的重要性的共同认识,以及对他们地区水道内相对健康和问题的共同看法。我们的发现可以帮助打破关于GBR地区和其他地方的科学怀疑群体的假设。我们提出建议,以指导更具建设性的参与,寻求恢复信任,并就保护重要生态系统功能和服务的共同目标和途径达成共识。
    At a time when ambitious environmental management initiatives are required to protect and restore aquatic ecosystems, public trust in the science that underpins environmental policy and decision-making is waning. This decline in public trust coincides with a rise in misinformation, and threatens to undermine public support for, and participation in, environmental protection. Our study investigates the prevalence and predictors of mistrust in science associated with the protection and management of the Great Barrier Reef (GBR) and its catchments. Using survey data from 1,877 residents of the GBR region, we identify environmental values, perceptions, and attitudes that are associated with science mistrust. Our results include a typology of GBR science trust and scepticism. Science-sceptical respondents, representing 31% of our sample, were likely to perceive waterway management decisions as being unfair, felt less responsible, and were less motivated to contribute to improving waterway health than those with greater trust in science. Science-sceptical respondents also had differing perceptions of some threats to waterways, in particular climate change. However, similarities and \'common ground\' between respondents with varying levels of trust in science included a shared recognition of the importance of waterways\' ecosystem services, and a shared perception of the relative health and problems within their regions\' waterways. Our findings can help to break down assumptions about science-sceptical groups in the GBR region and elsewhere. We offer recommendations to guide more constructive engagement that seeks to restore trust and build consensus on mutual goals and pathways to protect vital ecosystem functions and services.
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