Radiography

射线照相术
  • 文章类型: Journal Article
    苏格兰折叠猫(Feliscatus,Linnaeus1758)是世界上最著名和最受欢迎的猫品种之一,其特点是他们折叠的耳朵连接到头部。经常,猫会成为不同创伤和事故的牺牲品,这些创伤和事故会导致骨折,尤其是在后足骨。辐射测量方法在兽医实践中用于可视化和测量动物骨骼的不同部分。这项研究的目的是评估从苏格兰折叠猫的掌骨和meta骨的影像学图像得出的线性参数,并进一步检测潜在的性二态性。分析了24只不同年龄和体重的成年苏格兰折叠猫(12只雄性和12只雌性)的射线照相图像。评估了后足骨的六个线性测量值,以研究两性之间的任何差异。男性中骨的五个掌骨(MC1-5)和四个meta骨(MT2-5)的线性辐射测量值大于雌性猫。MC1和MC2的最大长度(Ml)在性别之间有统计学差异,分别,(p=0.001)和(p=0.05)。其他掌骨大部分在所有线性参数上都不同,但无统计学意义。在MC1-3(p=0.001)和MC4(p=0.05)的近端宽度(Wp)参数中,性别之间的差异最大。更多的统计学差异是MT2和更少的MT3。MT4的Bd的线性参数在性别之间的统计学差异最大(p=0.001)。这项研究的结果将有助于比较解剖学的功能,在兽医临床实践中,在动物园考古学和兽医法医调查中。
    Scottish Fold cats (Felis catus, Linnaeus 1758) are one of the most well-known and popular cat breeds in the world, characterized by their folded ears attached to the head. Very frequently, cats fall prey of different trauma and accidents that can cause bone fractures especially in the metapodial bones. The method of radiometry is used in veterinary practice to visualize and measure different parts of the animal skeleton. The aim of this study was to assess the linear parameters derived from radiographic images of the metacarpals and metatarsals in Scottish Fold cats and additionally detecting potential sexual dimorphism. Radiographic images of 24 adult Scottish Fold cats (12 male and 12 females) of different ages and weights were analysed. Six linear measurements of the metapodial bones were evaluated to investigate any differences between the sexes. The linear radiometric measurements of the five metacarpals (MC1-5) and the four metatarsals (MT2-5) bones were larger in male metapodial bones than that of female cats. The maximum length (Ml) of the MC1 and MC2 was statistically different between sex, respectively, (p = 0.001) and (p = 0.05). The others metacarpal bones were different in mostly all linear parameters but not statistically significant. The most significant differences between sexes were observed in the parameter of width proximal end (Wp) of MC1-3 (p = 0.001) and MC4 (p = 0.05). More statistical different was MT2 and less MT3. The linear parameter of Bd of the MT4 was the most different statistically between sex (p = 0.001). The results of the study will be useful in function of comparative anatomy, in veterinary clinical practice, in zoo archaeology and in the veterinary forensic investigation.
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  • 文章类型: Journal Article
    目的:通过比较有和没有舟骨骨折的患者在伸出的手跌倒后腕关节的放射学参数,研究解剖变异对舟骨骨折机制的影响。
    方法:对有舟骨骨折(第1组,n=169)和无舟骨骨折(第2组,n=188)患者的X线片进行横断面比较回顾性分析。测量形态测量数据,包括径向倾角(RI),径向高度(RH),尺骨方差(UV),腕高(CH)比,修订腕部高度(RCH)比率和桡骨远端手掌倾斜(PT)。使用受试者工作特征(ROC)曲线分析来评估每个变量的诊断性能,具有统计学上的显着差异。
    结果:平均RI和PT度以及RH长度在统计学上明显更高,与第2组相比,第1组的平均紫外线较低。在CH比率和RCH比率方面,两组之间没有差异。用ROC曲线分析,将比值比最高的截止值确定为RH(截止值=10.77mm,OR=21.886)。
    结论:尽管RI较高,RH,与非骨折组相比,舟骨骨折组的PT值和更多的尺骨负方差,ROC曲线分析显示,仅RH增加可被认为是伸展手跌倒后舟骨骨折的可能危险因素。
    背景:射线照片,危险因素,舟骨骨折,手腕形态。
    OBJECTIVE: To investigate the effects of anatomical variations on the mechanism of scaphoid fracture by comparing the radiologic parameters of the wrist of patients with and without scaphoid fracture after a fall on an outstretched hand.
    METHODS: Cross-sectional comparative retrospective analysis of radiographs of patients with (Group 1, n=169) and without scaphoid fracture (Group 2, n=188). Morphometric data were measured including radial inclination (RI), radial height (RH), ulnar variance (UV), carpal height (CH) ratio, revised carpal height (RCH) ratio and palmar tilt of the distal radius (PT). Receiver operating characteristics (ROC) curve analysis was used to assess the diagnostic performance for each variable with statistically significant difference.
    RESULTS: The mean RI and PT degrees and RH length were statistically significantly higher, and the mean UV was lower in Group 1 compared to Group 2. No difference was determined between the groups with respect to the CH ratio and RCH ratio. With ROC curve analysis, the cut-off value with the highest odds ratio was determined as RH (Cut-off value=10.77 mm, OR=21.886).
    CONCLUSIONS: Although higher RI, RH, PT values and more negative ulnar variance were observed in the scaphoid fracture group compared to the non-fracture group, ROC curve analysis showed that only increased RH can be considered as a possible risk factor for scaphoid fractures after fall on an outstretched hand.
    BACKGROUND: radiographs, risk factor, scaphoid fracture, wrist morphology.
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  • 文章类型: Journal Article
    为了确定临床表现,在我们的背景下,腺样体肥大儿童的影像学特征和结局。
    一项回顾性研究。
    埃努古一家私立医院的儿科诊所。
    51个孩子,2至108个月,具有暗示的临床特征和表现超过3年的腺样体肥大的影像学报告。
    从患者的病历中获得临床信息。数据分析了患者的临床特征,鼻后间隙(PNS)X线片上气道狭窄程度与治疗结果之间的关系。
    在PNS射线照片上测量的气道狭窄程度,治疗的类型和结果。
    腺样体肥大的发生率为男性(54.7%):女性(45.1%),平均发病年龄为31.50±3.64个月。嘈杂的呼吸是最常见的症状(94.1%);64.7%的病例中有过敏性鼻炎病史,45.1%的病例中有超过50%的气道狭窄病例仅通过医疗管理解决。
    在评估五岁以下儿童的上呼吸道时,应考虑腺样体肥大。儿科医生应熟悉诊断和管理上呼吸道阻塞的常见原因。
    没有声明。
    UNASSIGNED: To determine the clinical presentation, imaging features and outcomes of children with adenoid hypertrophy in our setting.
    UNASSIGNED: A retrospective study.
    UNASSIGNED: The paediatric clinic of a private hospital in Enugu.
    UNASSIGNED: 51 children, aged 2 to 108 months, with suggestive clinical features and radiographic report of adenoid hypertrophy who presented over 3 years.
    UNASSIGNED: Clinical information was obtained from the patient\'s medical records. Data was analysed for the clinical characteristics of the patients, the relationship between the degree of airway narrowing on a postnasal space (PNS) radiograph and treatment outcomes.
    UNASSIGNED: Degree of airway narrowing as measured on a PNS radiograph, the type of and outcomes of treatment.
    UNASSIGNED: There was an almost equal male (54.7%): female (45.1%) ratio in the occurrence of adenoid hypertrophy, with a mean age of occurrence of 31.50 ± 3.64 months. Noisy breathing was the commonest symptom (94.1%); history of atopic rhinitis in 64.7% of cases and hyperactive airway disease in 45.1% more than 50% of cases with airway narrowing resolved with medical management only.
    UNASSIGNED: Adenoid hypertrophy should be considered in evaluating the upper airway in children under five. Paediatricians should be conversant with diagnosing and managing this common cause of upper airway obstruction.
    UNASSIGNED: None declared.
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  • 文章类型: Journal Article
    成人退行性脊柱侧凸(ADS)是一种冠状面畸形,常伴有矢状面错位。手术矫正可能涉及主要和/或远端位置的分数曲线(FC)。FC的校正越来越被认为是改善局限于FC水平的神经根性疼痛的关键。本研究旨在总结有关ADS中FC校正原理的文献。系统审查了三个数据库,以确定所有报告纠正ADS中FC的理由的主要研究。如果文章是来自ADS(≥18岁)患者的主要数据的英文全文研究,则将其纳入。确定了74篇文章,其中12个是在全文审查后纳入的。研究结果表明,与植入the骨的构造相比,在L5处终止长段融合的FC矫正会增加远端交界变性的风险。此外,周向融合提供更大的FC校正,降低再操作风险,和较短的构造长度。微创手术(MIS)技术可以提供有效的影像学矫正,并改善与FC凹陷椎间孔狭窄相关的腿部疼痛。虽然经验有限。开放手术可能是必要的,以实现充分的矫正严重,高度僵硬的畸形。当前数据支持ASD中的主要曲线校正,其中FC凹度和截断偏移一致,这表明FC有助于患者的整体畸形。周向融合和支架杆的使用可以改善矫正并增强长结构的稳定性和耐久性。最后,MIS技术显示出轻度畸形的希望,但需要进一步研究。
    Adult degenerative scoliosis (ADS) is a coronal plane deformity often accompanied by sagittal plane malalignment. Surgical correction may involve the major and/or distally-located fractional curves (FCs). Correction of the FC has been increasingly recognized as key to ameliorating radicular pain localized to the FC levels. The present study aims to summarize the literature on the rationale for FC correction in ADS. Three databases were systematically reviewed to identify all primary studies reporting the rationale for correcting the FC in ADS. Articles were included if they were English full-text studies with primary data from ADS ( ≥ 18 years old) patients. Seventy-four articles were identified, of which 12 were included after full-text review. Findings suggest FC correction with long-segment fusion terminating at L5 increases the risk of distal junctional degeneration as compared to constructs instrumenting the sacrum. Additionally, circumferential fusion offers greater FC correction, lower reoperation risk, and shorter construct length. Minimally invasive surgery (MIS) techniques may offer effective radiographic correction and improve leg pain associated with foraminal stenosis on the FC concavity, though experiences are limited. Open surgery may be necessary to achieve adequate correction of severe, highly rigid deformities. Current data support major curve correction in ASD where the FC concavity and truncal shift are concordant, suggesting that the FC contributes to the patient\'s overall deformity. Circumferential fusion and the use of kickstand rods can improve correction and enhance the stability and durability of long constructs. Last, MIS techniques show promise for milder deformities but require further investigation.
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  • 文章类型: Journal Article
    暂无摘要。
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  • 文章类型: Journal Article
    虽然种植体周围粘膜炎仅依赖于临床参数,放射学评估对于诊断种植体周围炎是必不可少的。口内射线照相术,凭借其简单的应用,低辐射暴露,以及种植体周围结构的充分表现,作为即时和后续评估的护理标准。通过定制的放射学夹板进行标准化可以与以前的图像具有出色的可比性,并且可以确定植入物周围骨骼的轮廓和密度的微小变化。此外,全景X线摄影和锥形束计算机断层扫描(CBCT)等其他X线摄影方式可能为特定患者和临床病例提供有用的特征,同时也显示出先天的局限性.除了评估边缘种植体周围骨水平作为临床相关性的关键参数外,放射学评估可能会发现与假体修复本身有关的各种其他发现,它与植入物的配合精度,以及种植体周围的软组织和硬组织。由于这些发现对于评估种植体周围健康和种植体预后至关重要,建议采用系统的诊断评估途径进行全面评估,以从放射学成像中提取所有相关信息.本文还概述了种植体周围问题中不同成像方式的临床和时间适应症。
    While peri-implant mucositis relies solely on clinical parameters, radiological assessment becomes indispensable for diagnosing peri-implantitis. Intraoral radiography, with its simplicity of application, low radiation exposure, and adequate representation of peri-implant structures, stands out as the standard of care for both immediate and follow-up assessments. Standardization by custom-made radiologic splints allows for excellent comparability with previous images and allows for the determination of even small changes in contour and density of the peri-implant bone. Furthermore, other radiographic modalities like panoramic radiography and cone beam computed tomography (CBCT) may provide useful features for specific patients and clinical cases while also showing innate limitations. Beyond the assessment of the marginal peri-implant bone level as the crucial parameter of clinical relevance, radiologic assessment may reveal various other findings related to the prosthetic restoration itself, the precision of its fit to the implant, and the peri-implant soft and hard tissues. Since such findings can be crucial for the assessment of peri-implant health and the implants\' prognosis, a systematic diagnostic evaluation pathway for a thorough assessment is recommended to extract all relevant information from radiologic imaging. This article also provides an overview of the clinical and chronological indications for different imaging modalities in peri-implant issues.
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  • 文章类型: Journal Article
    这篇综述涵盖了急性外伤后常见的骨科损伤。对这些损伤进行彻底的身体检查和影像学检查是确保适当管理的关键。尽管许多损伤可能需要紧急或紧急的骨科咨询和管理,本综述的重点是低风险的损伤,适合在门诊骨科随访中进行夹板固定.这项审查涵盖了主要的身体检查特征,帮助提供者评估伤害的放射学发现,以及审查夹板的应用,以帮助促进在急性护理环境中快速管理这些损伤。
    UNASSIGNED: This review covers common orthopedic injuries seen after acute traumatic injury. A thorough physical examination and radiographic review of these injuries are key to ensuring appropriate management. Although many injuries may require urgent or emergent orthopedic consultation and management, this review focuses on injuries that are low-risk and amenable to splinting with outpatient orthopedic follow-up. This review covers key physical examination features, radiographic findings that help providers assess injuries, as well as reviewing splinting application to help facilitate rapid management of these injuries in the acute care setting.
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  • 文章类型: Journal Article
    上颌中隔和中隔大疱的解剖学变化可能在解释马头的X光片过程中产生挑战,并且难以准确识别受鼻窦疾病影响的部位。目前在科学文献中很少描述这些结构的射线照相外观。这项工作旨在描述马的上颌隔膜和上颌间隔大疱的解剖和影像学特征。使用了六个化学保存的马尸体头,在接受上颌骨皮瓣后,上颌中隔及其各自的大疱被确认。在这些结构上进行造影剂浸渍之前和之后的射线照相检查。上颌隔膜的位置在解剖标本之间以及同一标本的侧面之间有所不同。30°斜背腹侧外侧和外侧突出物可以识别上颌隔和中隔大疱。然而,下颌骨处于中立位置或下颌骨移位时,大疱仍然叠加在背腹突起的牙弓上。建议倾斜偏移射线照相定位,并证明对上颌间隔大疱的检查是有效的,下颌骨移位到要检查的大疱一侧,和射线照相光束在相同方向上倾斜。在骨瓣和对比射线照相检查允许其充分解释之后,可以通过宏观方式正确识别上颌隔膜及其大疱。大小和位置的变化被认为是马种的正常现象。
    The anatomical variations of the maxillary septum and the septal bullae can generate challenges during the interpretation of radiographs of the horses\' heads and make it difficult to accurately identify the sites affected in sinus disorders. The description of the radiographic appearance of these structures is currently scarce in the scientific literature. This work aims to describe the anatomical and radiographic characteristics of the maxillary septum and maxillary septal bullae in horses. Six chemically preserved equine cadaver heads were used which, after being submitted to the maxillary osseous flap, the maxillary septum and its respective bullae were identified. Radiographic examinations before and after contrast impregnation on these structures were performed. The positioning of the maxillary septum varied between the anatomical specimens and between the sides of the same specimen. The 30° oblique dorsoventral lateral and lateral projections allowed the identification of the maxillary septum and septal bullae. However, the bullae remained superimposed on the dental arches in the dorsoventral projections with the mandible in a neutral position or with the mandible displaced. The oblique offset radiographic positioning was suggested and proved effective for the examination of the maxillary septal bullae, where the mandible was displaced to the side of the bullae to be examined, and the radiographic beam inclined in the same direction. The maxillary septum and its bullae could be properly identified in a macroscopic way after the osseous flap and the contrasted radiographic examination allowed its adequate interpretation. Variations in size and position are considered normal for the equine species.
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  • 文章类型: Journal Article
    鉴于可能的辐射损伤和放射调查的不准确性,特别是在儿童中,在儿科患者中进行肢体延长时,超声和出色的微血管成像(SMI)可能提供评估新骨形成的替代方法。这项研究的目的是评估超声联合SMI在监测儿童肢体延长期间新骨形成中的应用。
    在这项回顾性队列研究中,每两周对30例接受肢体延长术的儿科患者进行超声和X光检查。超声用于监测新骨形成。将垂直血管的数量和血流阻力指数与普通X光片进行了比较。
    我们将新骨形成分为三个阶段:I期(早期延长),在X线照片和超声上没有明显的愈伤组织形成;II期(延长),其中X射线照片显示低密度愈伤组织形成,分布不均,在超声下可以识别出三个子阶段:在Ia中可见点状愈伤组织;在IIb中,有尚未连接的线性愈伤组织形成,在IIc中,有连续的线性愈伤组织。在第三阶段(治疗),骨端已经结合了,骨膜完好无损,愈伤组织消失了,正如在射线照片上所证实的,显示骨愈合。早期注意到垂直船只的数量逐渐增加,在IIb和IIc阶段达到峰值,随后逐渐下降(p<0.001)。延迟愈合涉及IIa期延长的患者或在延长期间从IIb或IIc期恢复到IIa期的患者。
    我们发现,当与放射学发现相结合时,可以使用超声可靠地评估接受肢体延长的儿科患者新骨的形成。这种组合可以改善对预后的评估,以及对延长协议的调整。虽然SMI提供了新骨骼中血管生成的额外见解,它的作用主要有助于了解微血管环境,而不是直接通知调整治疗。
    UNASSIGNED: Given the possible radiation damage and inaccuracy of radiological investigations, particularly in children, ultrasound and superb microvascular imaging (SMI) may offer alternative methods of evaluating new bone formation when limb lengthening is undertaken in paediatric patients. The aim of this study was to assess the use of ultrasound combined with SMI in monitoring new bone formation during limb lengthening in children.
    UNASSIGNED: In this retrospective cohort study, ultrasound and radiograph examinations were performed every two weeks in 30 paediatric patients undergoing limb lengthening. Ultrasound was used to monitor new bone formation. The number of vertical vessels and the blood flow resistance index were compared with those from plain radiographs.
    UNASSIGNED: We categorized the new bone formation into three stages: stage I (early lengthening), in which there was no obvious callus formation on radiographs and ultrasound; stage II (lengthening), in which radiographs showed low-density callus formation with uneven distribution and three sub-stages could be identified on ultrasound: in Ia punctate callus was visible; in IIb there was linear callus formation which was not yet connected and in IIc there was continuous linear callus. In stage III (healing), the bone ends had united, the periosteum was intact, and the callus had disappeared, as confirmed on radiographs, indicating healed bone. A progressive increase in the number of vertical vessels was noted in the early stages, peaking during stages IIb and IIc, followed by a gradual decline (p < 0.001). Delayed healing involved patients with a prolonged stage IIa or those who regressed to stage IIa from stages IIb or IIc during lengthening.
    UNASSIGNED: We found that the formation of new bone in paediatric patients undergoing limb lengthening could be reliably evaluated using ultrasound when combined with the radiological findings. This combination enabled an improved assessment of the prognosis, and adjustments to the lengthening protocol. While SMI offered additional insights into angiogenesis within the new bone, its role primarily contributed to the understanding of the microvascular environment rather than directly informing adjustments of treatment.
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  • 文章类型: Journal Article
    据报道,多达30%的儿童成功支撑治疗婴儿发育性髋关节发育不良(DDH)的放射性残余髋臼发育不良(RAD)。预测那些将解决和可能需要矫正手术的人对于优化后续协议很重要。在这项研究中,我们旨在确定支撑后两年和五年RAD的患病率和预测因子。
    这是一个单中心,使用已发表的DDH管理的婴儿的前瞻性纵向队列研究,2012年1月至2016年12月标准化Pavlik线束协议。使用髋臼指数-外侧边缘(AI-L)和髋臼指数-sourcil(AI-S)在平均随访两年时测量RAD,在使用AI-L的五年时间里,AI-S,中心边缘角(CEA),和髋臼深度比(ADR)。每个髋关节都是根据公布的标准值进行分类的,边界线(1到2个标准偏差(SDs)),或基于性别的发育不良(>2个SDs),年龄,和偏侧性。
    在完成方案的202名婴儿中,181人(90%)接受了两年和五年的随访X光片。两年后,在304个最初的病态臀部中,RAD(发育不良)患病率为10%,RAD(临界)患病率为30%.五年后,RAD(发育不良)降低至1%至3%,RAD(临界)降低至<1%至2%。在逻辑回归中,在2年时没有变量可预测RAD.只有两年的AI-L可以预测五年的RAD(p<0.001)。如果两个臀部在两年的随访中都是正常的(n=96),五年后都保持正常。在那些在两年时(n=21)有双侧临界臀部的人中,五年时只有两个是临界线,都没有发育不良。在那些在两年(n=26)患有临界发育不良或双侧发育不良的患者中,3人(12%)在5年时出现发育不良。
    大多数RAD患者在支架治疗后两年,自发解决了五年。因此,支具治疗后两年X光片正常的儿童可以出院。在两年内对AI-L异常的患者进行有针对性的随访,将确定在五年后可能从手术矫正中受益的少数人。
    UNASSIGNED: Radiological residual acetabular dysplasia (RAD) has been reported in up to 30% of children who had successful brace treatment of infant developmental dysplasia of the hip (DDH). Predicting those who will resolve and those who may need corrective surgery is important to optimize follow-up protocols. In this study we have aimed to identify the prevalence and predictors of RAD at two years and five years post-bracing.
    UNASSIGNED: This was a single-centre, prospective longitudinal cohort study of infants with DDH managed using a published, standardized Pavlik harness protocol between January 2012 and December 2016. RAD was measured at two years\' mean follow-up using acetabular index-lateral edge (AI-L) and acetabular index-sourcil (AI-S), and at five years using AI-L, AI-S, centre-edge angle (CEA), and acetabular depth ratio (ADR). Each hip was classified based on published normative values for normal, borderline (1 to 2 standard deviations (SDs)), or dysplastic (> 2 SDs) based on sex, age, and laterality.
    UNASSIGNED: Of 202 infants who completed the protocol, 181 (90%) had two and five years\' follow-up radiographs. At two years, in 304 initially pathological hips, the prevalence of RAD (dysplastic) was 10% and RAD (borderline) was 30%. At five years, RAD (dysplastic) decreased to 1% to 3% and RAD (borderline) decreased to < 1% to 2%. On logistic regression, no variables were predictive of RAD at two years. Only AI-L at two years was predictive of RAD at five years (p < 0.001). If both hips were normal at two years\' follow-up (n = 96), all remained normal at five years. In those with bilateral borderline hips at two years (n = 21), only two were borderline at five years, none were dysplastic. In those with either borderline-dysplastic or bilateral dysplasia at two years (n = 26), three (12%) were dysplastic at five years.
    UNASSIGNED: The majority of patients with RAD at two years post-brace treatment, spontaneously resolved by five years. Therefore, children with normal radiographs at two years post-brace treatment can be discharged. Targeted follow-up for those with abnormal AI-L at two years will identify the few who may benefit from surgical correction at five years\' follow-up.
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