US

糖尿病
  • 文章类型: Journal Article
    背景:高龄患者通常被认为是心脏移植(HT)的不良候选人。随着美国人口的老龄化,对于临床医生来说,了解如何最好地选择患者进行高级治疗非常重要.
    方法:这是对2006年至2022年8月美国移植接受者科学注册数据的回顾性分析。如果是多器官移植的患者被排除在外,重新移植,或移植后不到1年。
    结果:70岁以上的患者一年生存率为87.5%,<60岁时为91.1%,60-69岁时为88.4%(p<0.001)。存活率在数值上提高了,但并不重要,随着移植时代的进展,那些≥70年。通过Kaplan-Meier分析,在<60年的5年生存率最高(80.6%),60-69岁(78.2%)和≥70岁(77.1%)。当用相同的度量比较60-69年与70年以上时,差异有统计学意义(p=0.12)。70岁以上人群的一年生存率从2000-2009年(80.7%)提高到2018年10月以来的88.5%(p<0.001)。随着接受者年龄的增长,他们更有可能是男性,并且不太可能是黑人或西班牙裔/拉丁裔(p<0.001)。
    结论:总体而言,对于精心选择的≥70岁的患者,HT结果非常好。和移植患者在这个年龄段可以考虑。
    BACKGROUND: Patients of advanced age are often considered to be poor candidates for heart transplant (HT). As the U.S. population continues to age, it is important for clinicians to understand how best to select patients for advanced therapies.
    METHODS: This was a retrospective analysis of the U.S. Scientific Registry of Transplant Recipients data from 2006 to August 2022 in adult recipients. Patients were excluded if they were multiorgan transplant, re-do transplants, or less than 1 year post transplant.
    RESULTS: Recipients ≥70 had a 1-year survival of 87.5%, compared to 91.1% for <60%, and 88.4% for 60-69 years (p < 0.001). Survival improved numerically, but not significantly, as transplant eras progressed for those ≥70 years. Survival by Kaplan-Meier analysis was greatest at 5 years for <60 years (80.6%), compared to 60-69 years (78.2%) and ≥70 years (77.1%). When comparing 60-69 years to ≥70 years by this same metric, there was significant difference (p = 0.12). One year survival for those ≥70 years has improved from 2000-2009 (80.7%) to 88.5% since October 2018 (p < 0.001). As recipients increased in age, they were more likely to be male, and less likely to be Black or Hispanic/Latino (p < 0.001).
    CONCLUSIONS: Overall, HT outcomes are excellent for carefully selected patients ≥70 years, and transplanting patients in this age cohort can be considered.
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  • 文章类型: Journal Article
    目的:我们的目的是回顾有关青少年子宫内膜异位症的非侵入性诊断的证据。
    方法:按照SWiM报告指南编写系统综述。这项研究是在三个数据库(MEDLINE/PubMed,Scopus,和WebofScience)通过非侵入性方法确定有关青少年人群和子宫内膜异位症诊断的文章。搜索包括关键词\"子宫内膜异位症,\"\"青少年,\"\"诊断,\"\"超声波,\"和\"MRI。“只考虑了英语文章,2000年以前出版的那些被排除在外。确定的结果集中在临床症状上,超声(美国),磁共振成像(MRI)结果提示子宫内膜异位症。
    结果:我们收录了26篇文章,主要包括病例系列和横断面研究。汇总分析涉及2,299名女性青少年(年龄范围8-25岁),临床怀疑,imaged,和/或手术证实的子宫内膜异位症。最常报告的症状是痛经,其次是慢性盆腔疼痛。在临床怀疑子宫内膜异位症的青少年中接受超声检查(美国),32.8%表现出至少一种子宫内膜异位症。在167例超声诊断的子宫内膜异位症患者中,48.5%有深部浸润型子宫内膜异位症(DIE),45.5%的患者检测到子宫内膜瘤.三项研究评估了MRI发现,结果显示,49.8%的患者出现子宫内膜异位症。
    结论:痛经和慢性盆腔疼痛是青春期子宫内膜异位症的主要症状。尽管它们的诊断准确性各不相同,US和MRI已成为诊断该疾病的有价值的工具。虽然美国可能有局限性,特别是在检测细微病变时,核磁共振显示有希望,即使在以前的超声正常的情况下。早期识别和主动诊断对于改善青少年子宫内膜异位症的治疗至关重要。
    OBJECTIVE: Our aim was to review the evidence concerning the non-invasive diagnosis of endometriosis in adolescents.
    METHODS: A systematic review was written following the SWiM reporting guidelines. The study research was made across three databases (MEDLINE/PubMed, Scopus, and Web of Science) to identify articles about the adolescent population and the diagnosis of endometriosis through non-invasive methods. The search included the keywords \"endometriosis,\" \"adolescents,\" \"diagnosis,\" \"ultrasound,\" and \"MRI.\" Only English-language articles were considered, and those published prior to 2000 were excluded. The established outcomes focused on clinical symptoms, ultrasound (US), and magnetic resonance imaging (MRI) findings suggestive of endometriosis.
    RESULTS: We included 26 articles, mostly comprising case series and cross-sectional studies. The pooled analysis involved 2,299 female adolescents (age range 8-25 years old) with clinically suspected, imaged, and/or surgically confirmed endometriosis. The most frequently reported symptom was dysmenorrhea, followed by chronic pelvic pain. Among adolescents clinically suspected of endometriosis undergoing ultrasound (US), 32.8% exhibited at least one sign of endometriosis. Of the 167 patients with ultrasound-diagnosed endometriosis, 48.5% had deep infiltrating endometriosis (DIE), and 45.5% had an endometrioma detected. Three studies assessed MRI findings, revealing that 49.8% presented with signs of endometriosis.
    CONCLUSIONS: Dysmenorrhea and chronic pelvic pain stand out as key symptoms of adolescent endometriosis. Although their diagnostic accuracy varies, US and MRI have emerged as valuable tools for diagnosing the disease. While the US may have limitations, especially in detecting subtle lesions, MRI shows promise, even in cases with normal previous ultrasounds. Early recognition and proactive diagnosis are crucial for improving the management of endometriosis in adolescents.
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  • 文章类型: Journal Article
    暂无摘要。
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  • 文章类型: Journal Article
    目的:研究磁共振成像(MRI)是否能最好地检测高危女性的早期恶性肿瘤。
    方法:回顾性研究,横断面研究,在阿卜杜勒阿齐兹国王大学医院进行,吉达,沙特阿拉伯,纳入419例女性乳腺癌患者,年龄16~84岁(平均年龄49岁).从放射科的数据库中收集数据以比较MRI,超声(美国),和乳房X线照相术结果,有或没有组织活检。
    结果:在诊断良性和恶性病变时,MRI显示与组织活检有显著一致性,具有较高的敏感性(70%)和特异性(87%);其阳性预测值(PPV)为92%,阴性预测值(NPV)为56%。而US具有84%的PPV和63%的NPV;具有灵敏度(79%)和特异性(71%)。在没有组织活检的患者中,与MRI结果相比,乳房X线照相术和US之间差异不大.
    结论:对于早期发现BC,磁共振成像比超声和乳腺X线摄影更有效。当与病理结果相关时,它在检测乳腺病变方面具有很高的敏感性,在表征其性质方面具有很高的特异性。建议对未发现或可疑的病变进行超声筛查,然后进行MRI检查。这将增加乳腺病变的检出率,减少不必要的组织活检,并提高疾病的存活率。
    OBJECTIVE: To investigate whether magnetic resonance imaging (MRI) best detects early malignancy in high-risk women.
    METHODS: A retrospective, cross-sectional study, carried out at King Abdulaziz University Hospital, Jeddah, Saudi Arabia, included 419 female breast cancer patients aged 16-84 years (mean age of 49). Data were collected from the radiological department\'s database to compare the MRI, ultrasound (US), and mammography results, with or without tissue biopsy.
    RESULTS: In diagnosing benign versus malignant lesions, MRI showed significant agreement with tissue biopsy, with high sensitivity (70%) and specificity (87%); its positive predictive value (PPV) was 92% and negative predictive value (NPV) was 56%. While US has a PPV of 84% and NPV of 63%; with a sensitivity (79%) and specificity (71%). In patients without tissue biopsy, there was little difference between mammography and US compared with MRI results.
    CONCLUSIONS: Magnetic resonance imaging is more effective than US and mammography for early detection of BC. It showed high sensitivity in detecting breast lesions and high specificity in characterizing their nature when correlated with pathological results. Ultrasound screening followed by MRI is suggested for undetected or suspected lesions. This will increase the breast lesion detection rate, reduce unneeded tissue biopsies, and enhance the disease\'s survival rate.
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  • 文章类型: Journal Article
    根据生化改变和临床表现怀疑甲状旁腺病理,成像在原发性甲状旁腺功能亢进中的主要作用是肿瘤在甲状旁腺内的定位,手术计划,并在复发性疾病的背景下寻找任何异位甲状旁腺组织。本文对甲状旁腺的胚胎学和解剖学变异及其临床相关性进行了全面的综述,甲状旁腺的外科解剖,多腺甲状旁腺疾病之间的区别,孤立性腺瘤,非典型甲状旁腺肿瘤,和甲状旁腺癌.角色,超声波的优点和局限性,四维计算机断层扫描(4DCT),放射性标记的tech-99(99mTc)sestamibi或双示踪剂99mTc高tech酸盐和99mTc-sestamibi,有或没有单光子发射计算机断层扫描(SPECT)或SPECT/CT,动态增强磁共振成像(4DMRI),本文广泛讨论了氟胆碱正电子发射断层扫描(18F-FCHPET)或[11C]蛋氨酸(11C-MET)PET在甲状旁腺病变的管理。本文还阐明了氟脱氧葡萄糖PET(FDG-PET)的作用。还描述了美国临床肿瘤学会(ASCO)提出的甲状旁腺癌的管理指南。最后提供了一种用于管理甲状旁腺病变的算法,可作为放射科医生的快速参考指南。临床医生和外科医生。
    Parathyroid pathologies are suspected based on the biochemical alterations and clinical manifestations, and the predominant roles of imaging in primary hyperparathyroidism are localisation of tumour within parathyroid glands, surgical planning, and to look for any ectopic parathyroid tissue in the setting of recurrent disease. This article provides a comprehensive review of embryology and anatomical variations of parathyroid glands and their clinical relevance, surgical anatomy of parathyroid glands, differentiation between multiglandular parathyroid disease, solitary adenoma, atypical parathyroid tumour, and parathyroid carcinoma. The roles, advantages and limitations of ultrasound, four-dimensional computed tomography (4DCT), radiolabelled technetium-99 (99mTc) sestamibi or dual tracer 99mTc pertechnetate and 99mTc-sestamibi with or without single photon emission computed tomography (SPECT) or SPECT/CT, dynamic enhanced magnetic resonance imaging (4DMRI), and fluoro-choline positron emission tomography (18F-FCH PET) or [11C] Methionine (11C -MET) PET in the management of parathyroid lesions have been extensively discussed in this article. The role of fluorodeoxyglucose PET (FDG-PET) has also been elucidated in this article. Management guidelines for parathyroid carcinoma proposed by the American Society of Clinical Oncology (ASCO) have also been described. An algorithm for management of parathyroid lesions has been provided at the end to serve as a quick reference guide for radiologists, clinicians and surgeons.
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  • 文章类型: Journal Article
    胆道闭锁(BA)是一种先天性疾病,发生在肝外胆管缺失或缺乏时,导致肝纤维化,门静脉高压症,最后是肝硬化.这种情况是持续超过两周的新生儿持续阻塞性黄疸的最常见原因。腹部超声(US)是用于诊断BA的主要成像技术,而计算机断层扫描(CT)保留用于更复杂的病例。诊断BA的金标准仍然是肝活检术中胆管造影。BA的治疗通常包括Kasai肝肠造口术,但是由于诊断延迟和疾病进展,一些患者仍然需要肝移植。在这项研究中,作者介绍了一个3个月大的婴儿胆道闭锁的病例及其超声特征,由于晚期疾病接受了肝移植。成像的主要目的是提供及时的诊断,鉴于及时手术干预的重要意义。
    Biliary atresia (BA) is a congenital disease that occurs when extrahepatic bile ducts are either absent or deficient, resulting in liver fibrosis, portal hypertension, and eventually cirrhosis. It is the most common cause of persistent obstructive jaundice in newborns lasting more than two weeks is this condition. Abdominal ultrasound (US) is the primary imaging technique used to diagnose BA, while computed tomography (CT) is reserved for more complex cases. The gold standard for diagnosing BA is still intraoperative cholangiogram with liver biopsy. Treatment for BA usually involves Kasai hepatoportoenterostomy, but some patients still require liver transplantation due to diagnostic delays and advanced disease. In this study, the authors present the case of a 3-month-old infant with biliary atresia and its ultrasound characteristics, who underwent liver transplantation due to advanced disease. The primary objective of imaging is to provide a prompt diagnosis, given the crucial significance of timely surgical intervention.
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  • 文章类型: Journal Article
    背景:本研究旨在估计美国按社会经济地位(SES)等级分层的人口水平和州水平的铅归因死亡率负担。
    方法:基于国家健康和营养调查(NHANES),我们从收入中构建了个人水平的SES分数,employment,教育和保险数据。我们通过Cox回归评估了NHANES队列中血铅水平(BLL)与全因死亡率之间的关系(n=31311,4467例死亡)。使用估计的危险比(HR)和培养基(2-5μg/dL)和高(≥5μg/dL)BLL的患病率,我们计算了1999-2019年铅暴露导致的全因死亡率的SES分层人群归因分数(PAFs).我们还进行了系统评价,以估计州一级的铅可归因死亡率负担。
    结果:BLL每增加2倍的HR从最低SES等级的1.23(1.10-1.38)下降到最高SES等级的1.05(0.90-1.23)。在所有SES五分位数中,中等BLL表现出更大的死亡负担。SES较低的个人有较高的铅归因负担,这种差距在过去的二十年里一直存在。在2017-19年度,美国每年有67,000(32,000-112,000)例死亡可归因于铅暴露,其中18000例(2000-41000例)死亡发生在最低的SES类别。还强调了可归因于铅暴露的州一级死亡率负担的巨大差异。
    结论:这些研究结果表明,在美国成年人中,可归因于铅的死亡负担存在差异。由于不同SES类别之间的铅暴露效应大小以及BLL中的异质性。
    BACKGROUND: This study aimed to estimate population-level and state-level lead-attributable mortality burdens stratified by socioeconomic status (SES) class in the USA.
    METHODS: Based on the National Health and Nutrition Examination Survey (NHANES), we constructed individual-level SES scores from income, employment, education and insurance data. We assessed the association between the blood lead levels (BLL) and all-cause mortality by Cox regression in the NHANES cohort (n = 31 311, 4467 deaths). With estimated hazard ratios (HR) and prevalences of medium (2-5 μg/dL) and high (≥ 5 μg/dL) BLL, we computed SES-stratified population-attributable fractions (PAFs) of all-cause mortality from lead exposure across 1999-2019. We additionally conducted a systematic review to estimate the lead-attributable mortality burden at state-level.
    RESULTS: The HR for every 2-fold increase in the BLL decreased from 1.23 (1.10-1.38) for the lowest SES class to 1.05 (0.90-1.23) for the highest SES class. Across all SES quintiles, medium BLL exhibited a greater mortality burden. Individuals with lower SES had higher lead-attributable burdens, and such disparities haver persisted over the past two decades. In 2017-19, annually 67 000 (32 000-112 000) deaths in the USA were attributable to lead exposure, with 18 000 (2000-41 000) of these deaths occurring in the lowest SES class. Substantial disparities in the state-level mortality burden attributable to lead exposure were also highlighted.
    CONCLUSIONS: These findings suggested that disparities in lead-attributable mortality burden persisted within US adults, due to heterogeneities in the effect sizes of lead exposure as well as in the BLL among different SES classes.
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  • 文章类型: Journal Article
    这项研究调查了拉斯维加斯销售的有机和常规小麦粉和谷物中有毒和潜在有毒元素(PTE)的浓度。使用线性判别分析(LDA)评估样品的地理来源。蒙特卡罗模拟技术还用于评估四个生命阶段的非致癌风险。铝的浓度,As,Cd,Co,Cr,Cu,Fe,Mn,Mo,Ni,Pb,Se,Sr,在热块辅助消化后,使用电感耦合等离子体质谱法(ICP-MS)测定Zn。获得的结果表明,常规和有机小麦籽粒/面粉之间的毒性和PTEs含量没有显着差异。使用LDA,金属(类)被发现表明是地理来源。LDA对美国和西太平洋区域样本的总正确分类率为95.8%和100%,分别。本研究的结果表明,在四个生命阶段,与有毒元素摄入量相关的非致癌风险估计远远低于阈值(目标危害商(THQ)>1)。然而,在5至8岁的儿童中,超过Mn阈值的概率约为32%。这项研究的结果可以帮助了解拉斯维加斯儿童的饮食锰暴露。
    This study investigates concentrations of toxic and potentially toxic elements (PTEs) in organic and conventional wheat flour and grains marketed in Las Vegas. Geographic origins of the samples were evaluated using Linear Discriminant Analysis (LDA). Monte Carlo Simulation technique was also employed to evaluate non-carcinogenic risk in four life stages. Concentrations of Al, As, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Se, Sr, and Zn were determined using inductively coupled plasma mass spectrometry (ICP-MS) following hot block-assisted digestion. Obtained results showed non-significant differences in contents of toxic and PTEs between conventional and organic wheat grains/flour. Using LDA, metal (loid)s were found to be indicative of geographical origin. The LDA produced a total correct classification rate of 95.8% and 100% for US and West Pacific Region samples, respectively. The results of the present study indicate that the estimated non-carcinogenic risk associated with toxic element intakes across the four life stages were far lower than the threshold value (Target Hazard Quotient (THQ) > 1). However, the probability of exceeding the threshold value for Mn is approximately 32% in children aged between 5 and 8 years. The findings of this study can aid in understanding dietary Mn exposure in children in Las Vegas.
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  • 文章类型: Journal Article
    背景:梯形掌(TMC)关节是一种复杂的关节,其解剖结构和功能不同于长手指的掌指关节。该关节的稳定性由多个结构在三个层面上确保:骨软骨,囊韧带,和肌肉肌腱。在磁共振成像(MRI)上完美评估了确保TMC关节稳定性的解剖和生物力学结构,有高度的信心。所有描述的韧带在解剖学上都是可见的,并且在MRI和超声(US)上得到了完美的评估:背韧带,后斜韧带,掌骨间韧带,尺侧副韧带,两束前斜韧带(断裂韧带),以及浅前斜韧带和深前斜韧带。
    方法:本教育综述使用高场MRI和US评估TMC关节解剖结构,并与尸体标本进行比较,以及该关节的生物力学。此外,它突出了创伤性的病理模式(扭伤,位错,和骨折)和退行性疾病。
    结论:TMC关节解剖学知识对于放射科医师理解和评估各种创伤性和退行性病变至关重要,从而帮助临床医生和外科医生选择合适的治疗方法。
    BACKGROUND: The trapeziometacarpal (TMC) joint is a complex joint, whose anatomy and function are different from the metacarpophalangeal joints of the long fingers. The stability of this joint is ensured at three levels by multiple structures: osteochondral, capsulo-ligamentous, and musculo-tendinous. The anatomical and biomechanical structures ensuring the stability of the TMC joint are perfectly evaluated on magnetic resonance imaging (MRI), with a high degree of confidence. All described ligaments are anatomically visible and perfectly assessed on MRI and ultrasound (US): the dorsoradial ligament, the posterior oblique ligament, the intermetacarpal ligament, the ulnar collateral ligament, the two bundles of the anterior oblique ligament (break ligament), as well as the superficial anterior oblique and deep anterior oblique ligaments.
    METHODS: This educational review assesses the TMC joint anatomy using high-field MRI and US compared with cadaveric specimens as well the biomechanics of this joint. In addition, it highlights pathological patterns of traumatic (sprain, dislocation, and fractures) and degenerative diseases.
    CONCLUSIONS: Knowledge of TMC joint anatomy is crucial to the radiologists\' understanding and assessment of various traumatic and degenerative pathologies, and thus helps clinicians and surgeons choose the appropriate treatment.
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  • 文章类型: Journal Article
    背景:声带麻痹(VFP),涉及一个或两个声带,通常表明潜在的病理。确定VFP病因对于排除恶性肿瘤并专注于治疗病因至关重要。虽然各种成像方法被用来调查VFP的原因,他们的检测能力仍不清楚。本研究旨在评估不同成像技术在确定VFP原因中的检测患病率。
    方法:2023年9月,根据系统评价和荟萃分析(PRISMA)指南的首选报告项目,在多个数据库中进行了全面搜索。包括WebofScience,PubMed,Scopus,科克伦中部,和EMBASE。搜索之后,检索到的研究是根据预定义的资格标准进行筛选的.纳入研究的数据提取由两名作者独立进行。使用合并比例和95%置信区间分析结果。
    结果:我们的荟萃分析包括14项研究,包括1492例VFP患者。VFP识别的恶性原因在F-氟脱氧葡萄糖正电子发射断层扫描(PET)/计算机断层扫描(CT)中最普遍(41.5%),其次是磁共振成像(MRI)(40%),CT最低(17.1%)。相反,良性原因在F-氟脱氧葡萄糖PET/CT中的患病率最高(10.8%),其次是MRI(6.7%)和CT(4%)。在VFP原因识别中,MRI的检出率最高(58.1%),其次是CT(30.1%),UltraSound(美国)最低(26.8%)。在胸部病变检测中,CT的患病率最高(17.6%),其次是胸部X线(CXR)(6.5%)。CT检查发现头部病变的患病率为15%,而颈部病变检测显示CT患病率为38.9%,US为20.6%。
    结论:我们的研究显示,在不同的影像学模式下,鉴别恶性和良性病因的患病率不同。MRI显示VFP病因的总体检出率最高,而CT是最常用的,并且在各个地区检测特定病变的患病率最高。这些发现为不同成像技术在评估VFP中的诊断效用提供了有价值的见解。
    BACKGROUND: Vocal fold paralysis (VFP), involving one or both vocal folds, often indicates underlying pathologies. Identifying VFP causes is vital for excluding malignancies and focusing on treating the cause. While various imaging methods are used to investigate VFP causes, their detection abilities remain unclear. This study aims to assess the detection prevalence of different imaging techniques in determining the causes of VFP.
    METHODS: In September 2023 a comprehensive search was conducted per the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines across multiple databases, including Web of Science, PubMed, Scopus, Cochrane CENTRAL, and EMBASE. Following the search, the retrieved studies were screened based on the predefined eligibility criteria. Data extraction from the included studies was carried out independently by two authors. Outcomes were analyzed using pooled proportions and 95% confidence intervals.
    RESULTS: Our meta-analysis encompassed 14 studies with 1492 VFP patients included. Malignant causes for VFP identification were most prevalent in F-fluorodeoxyglucose Positron Emission Tomography (PET)/Computed Tomography (CT) (41.5%) followed by Magnetic resonance imaging (MRI) (40%), with CT being the lowest (17.1%). Conversely, benign causes had the highest prevalence in F-fluorodeoxyglucose PET/CT (10.8%), followed by MRI (6.7%) and CT (4%). In the VFP cause identification, MRI had the highest detection prevalence (58.1%), followed by CT (30.1%), and Ultra Sound (US) had the lowest (26.8%). In chest lesion detection, CT had the highest prevalence (17.6%), followed by Chest X-ray (CXR) (6.5%). Head lesions were detected with CT at a prevalence of 15%, while neck lesion detection showed CT prevalence at 38.9% and US at 20.6%.
    CONCLUSIONS: Our study revealed varying prevalence rates for the identification of malignant and benign causes across different imaging modalities. MRI demonstrated the highest overall detection prevalence for VFP causes, while CT was most commonly used and had the highest prevalence for specific lesions detection in various regions. These findings provide valuable insights into the diagnostic utility of different imaging techniques in the evaluation of VFP.
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