Imaging modalities

成像方式
  • 文章类型: Journal Article
    这篇评论批评了PawitJirawisan等人的研究“肿瘤侵入上矢状窦的患者侧支静脉途径的路径模式”。,强调其在讨论猪旁脉静脉络脉方面的局限性,依赖侵入性成像模式,缺乏结构化的评估。它建议通过结合替代成像技术进行改进,承认重要的静脉结构,并为手术决策提供分级系统。
    This commentary critiques the study \"Route patterns of the collateral venous pathway in patients with tumors invading the superior sagittal sinus\" by Pawit Jirawisan et al., highlighting its limitations in discussing parafalcine venous collaterals, reliance on invasive imaging modalities, and lack of structured assessments. It suggests improvements by incorporating alternative imaging techniques, acknowledging crucial venous structures, and providing grading systems for surgical decision-making.
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  • 文章类型: Case Reports
    本文讨论了一个有趣的泛丛病病例,以及与根据患者具体情况进行诊断过程相关的困难。它走过的主要差异的病因学患者的特殊表现的症状和相关的诊断和治疗过程,通过这个特定的病人治疗。在讨论中,我们讨论了臂丛神经及颈部和腋窝区周围结构的相关解剖结构,并在整个诊断检查过程中发现了临床上的关键信息,这对于血肿和治疗过程具有重要意义,目的是提供症状缓解,直至恢复至基线.这个案例研究讨论了好处,缺点,以及利用CT等主要不同成像方式的财务成本,MRI,或点护理超声(POCUS)。最后,这项研究提供了一种新的诊断算法,用于根据北美放射学会和欧洲放射学会详述的基于价值的护理的主要原则选择成像模式.
    This paper discusses an interesting case of pan plexopathy and the difficulties associated with the diagnostic processes based on patient-specific circumstances. It walks through the major differential of the etiology of the patient\'s particular presenting symptoms and the associated diagnostic and therapeutic process by which this particular patient was treated. In the discussion, the relevant anatomy of the brachial plexus and the surrounding structures in both the cervical and the axillary regions is discussed and key clinical pearls that became apparent throughout the diagnostic workup that was significant for a hematoma and therapeutic process aimed at providing symptomatic relief until recovery to baseline. This case study discusses the benefits, drawbacks, and financial costs of utilizing the major different imaging modalities such as CT, MRI, or Point of Care Ultrasound (POCUS). Finally, this study provides a new diagnostic algorithm for the selection of the imaging modality based on the major principles of value-based care as detailed by both the Radiological Society of North America and the European Society of Radiology.
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  • 文章类型: Journal Article
    目的:放射学中的人工智能(AI)一直是激烈辩论的主题。外界的看法是,算法和机器无法提供比放射科医生更好的诊断。不愿意实施AI可能是由于AI应用程序工作方式的不透明性以及具有挑战性和冗长的验证过程。在这项研究中,沙特放射科人员对人工智能应用的熟悉程度及其在临床实践中的有用性进行了调查。
    方法:2021年3月至4月在沙特阿拉伯对放射科人员进行了一项横断面研究。使用Google表格对全国放射科人员进行了电子调查。问卷包括12个与AI在临床实践中的有用性有关的问题,以及参与者对AI的知识及其在临床实践中学习和实施该技术的接受水平。还测量了参与者的信任水平;Kruskal-Wallis检验用于检查组间的差异。
    结果:共有来自各种放射学相关职业的224名受访者参加了调查。放射科医生显示了AI应用中的最低信任级别(p=0.033)。82%的参与者(n=184)从未在他们的部门使用过人工智能。大多数受访者(n=160,71.4%)表示缺乏有关基于AI的应用程序的正规教育。大多数参与者(n=214,95.5%)对AI教育表现出浓厚的兴趣,并愿意将其纳入放射学的临床实践。几乎一半的射线照相专业学生(22/46,47.8%)认为他们的工作可能因AI应用而面临风险(p=0.038)。
    结论:放射科人员的人工智能知识对他们的学习意愿有显著影响,在临床实践中使用和适应这项技术。参与者对人工智能表现出积极的态度,表现出合理的理解,并高度积极地学习并将其纳入临床实践。一些参与者认为他们的工作受到人工智能适应的威胁,但是这种信念可能会随着良好的培训和教育计划而改变。
    OBJECTIVE: Artificial intelligence (AI) in radiology has been a subject of heated debate. The external perception is that algorithms and machines cannot offer better diagnosis than radiologists. Reluctance to implement AI maybe due to the opacity in how AI applications work and the challenging and lengthy validation process. In this study, Saudi radiology personnel\'s familiarity with AI applications and its usefulness in clinical practice were investigated.
    METHODS: A cross-sectional study was conducted in Saudi Arabia among radiology personnel from March to April 2021. Radiology personnel nationwide were surveyed electronically using Google form. The questionnaire included 12-questions related to AI usefulness in clinical practice and participants\' knowledge about AI and their acceptance level to learn and implement this technology into clinical practice. Participants\' trust level was also measured; Kruskal-Wallis test was used to examine differences between groups.
    RESULTS: A total of 224 respondents from various radiology-related occupations participated in the survey. The lowest trust level in AI applications was shown by radiologists (p = 0.033). Eighty-two percent of participants (n = 184) had never used AI in their departments. Most respondents (n = 160, 71.4%) reported lack of formal education regarding AI-based applications. Most participants (n = 214, 95.5%) showed strong interest in AI education and are willing to incorporate it into the clinical practice of radiology. Almost half of radiography students (22/46, 47.8%) believe that their job might be at risk due to AI application (p = 0.038).
    CONCLUSIONS: Radiology personnel\'s knowledge of AI has a significant impact on their willingness to learn, use and adapt this technology in clinical practice. Participants demonstrated a positive attitude towards AI, showed a reasonable understanding and are highly motivated to learn and incorporate it into clinical practice. Some participants felt that their jobs were threatened by AI adaptation, but this belief might change with good training and education programmes.
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  • 文章类型: Journal Article
    背景:不确定的肾囊肿在临床决定前可能需要多种影像学检查方法。这项研究的目的是研究用于表征不确定的肾囊肿的成像方式对手术切除后病理结果的影响。
    方法:从我们的机构数据库,我们确定了2008年1月至2018年1月期间所有经手术治疗的BosniakIII肾肿块患者.所有复杂的肾囊肿均采用计算机断层扫描(CT)和/或磁共振成像(MRI)的组合进行表征。和/或超声造影(CEUS),并在多学科肿瘤委员会期间进行了讨论。研究了临床/放射学特征与病理结果之间的潜在关联,使用单变量和多变量分析。
    结果:在手术切除的52个肾囊性病变中,术前诊断为BosniakIII型肾囊肿,19例(37%)为恶性,33例(63%)为良性。恶性病变的比例从以横断面成像(CT和/或MRI)为特征的肾囊肿的47%下降到除横断面成像外还需要CEUS的17%。在多变量分析中,既往肾细胞癌病史与恶性肿瘤风险较高相关(p=0.016),超声造影诊断与恶性肿瘤风险较低相关(p=0.040).
    结论:我们发现,除了横断面成像外,使用CEUS来表征不确定的肾囊肿倾向于将BosniakIII重新定义为恶性肿瘤风险较低的病变,并可能导致过度分类。
    BACKGROUND: Indeterminate renal cysts may require several imaging modalities before clinical decision. The aim of this study was to investigate the effect of the imaging modality used to characterize indeterminate renal cysts on the pathological findings after surgical resection.
    METHODS: From our institutional database, we identified all patients surgically treated for Bosniak III renal masses between January 2008 and January 2018. All complex renal cysts were characterized with a combination of computed tomography (CT) and/or magnetic resonance imaging (MRI), and/or contrast-enhanced ultrasound (CEUS) and discussed during a multidisciplinary tumor board. Potential association between clinical/radiological characteristics and the pathological findings were investigated, using univariate and multivariate analyses.
    RESULTS: Of the 52 renal cystic lesions surgically removed, with a preoperative diagnosis of Bosniak III renal cyst, 19 (37%) were malignant and 33 (63%) were benign. The proportion of malignant lesions decreased from 47% when the renal cyst was characterized with cross-sectional imaging (CT and/or MRI) to 17% when the diagnosis required CEUS in addition to cross-sectional imaging. In multivariate analysis, prior history of renal cell carcinoma was associated with a higher risk of malignancy (p = 0.016) and diagnosis made with CEUS was associated with a lower risk of malignancy (p = 0.040).
    CONCLUSIONS: We found that using CEUS in addition to cross-sectional imaging to characterize indeterminate renal cysts tends to redefine Bosniak III as lesions with a lower risk of malignancy and can lead to overclassification.
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  • 文章类型: Case Reports
    身体包装是非法毒品贩运的常见方式之一。药物骡子通常在胃肠道或其他孔口内吞咽或插入药物。由于不断改进的包装技术和贩运者使用的复杂性,这种药物包的检测变得困难。可疑的阻塞或穿孔的中空内脏需要采用适当的放射学程序和技术来进行准确的检测和精确的诊断。延迟诊断和不适当的动作可能会给身体封隔器带来灾难性的物理后果。对于放射科医生来说,获得足够的经验以从其成像特征推断不同类型的药物包,并准确指导急诊医师和安全官员至关重要。这些数据包并不总是辐射密集的,因此,它们可能很难在常规腹部X光片上检测到。在这份报告中,作者举例说明了5例不同的包装方法和材料,这引起了放射学的挑战。
    Body packing is one of the common ways to traffic illicit drugs. Drug mules usually swallow or insert drugs within the gastrointestinal tract or other orifices. Detection of such drug packets has become difficult because of the constantly improving packaging techniques and the sophistication used by traffickers. Suspected obstruction or perforated hollow viscus requires employment of appropriate radiological procedures and techniques for accurate detection and precise diagnosis. A delay diagnosis and inappropriate action may carry disastrous physical consequences for the body packers. It is crucial for radiologists to acquire enough experience to deduce different types of drug packets from their imaging characteristics and to accurately guide emergency physicians and security officials. The packets are not always radiodense, therefore they can be difficult to detect on conventional abdominal radiographs. In this report, the authors illustrate 5 cases with different packaging methods and materials that give rise to radiological challenges.
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  • DOI:
    文章类型: Journal Article
    目的:讨论现有文献评估锁骨内侧骨phy以评估个体的年龄,使用各种成像方式。
    方法:搜索了四个学术研究数据库,以寻找研究活体受试者的研究。其中有几篇文章使用了尸体,一本教科书被用来详细描述锁骨的解剖结构。对39篇文章进行了分析。
    结果:文献表明,几种成像方式,包括常规射线照相术,计算机断层扫描,磁共振,和超声波检查,在法医背景下,正在用于评估锁骨内侧骨phy以估计个体的年龄。除了多种模式,研究人员正在使用各种分期分类系统,种族群体,和解释标准来建立参考数据。
    结论:需要确定没有有效出生日期文件的参与民事和刑事诉讼的个人的年龄。锁骨是人体中完成融合的最后一根骨头。锁骨在青少年早期开始融合,并在20年代后期完成内侧骨phy融合。锁骨融合的年龄范围为18至21岁。多个变量影响最终年龄估计,包括口译员的经验,个人的社会经济阶层或原籍地区,和成像模式内的限制。
    结论:计算机断层扫描是使用锁骨内侧骨phy估算法医年龄的首选方式。放射技师应该认识到当前的法医年龄估计做法,未来的研究应继续提供参考数据,以提高那些缺乏出生日期记录的个体的年龄估计的准确性。
    OBJECTIVE: To discuss current literature evaluating the medial clavicular epiphysis to assess an individual\'s age using various imaging modalities.
    METHODS: Four scholarly research databases were searched to find studies that examined living subjects. Several articles were included that used cadavers, and a textbook was used to detail the anatomy of the clavicle. Thirty-nine articles were analyzed.
    RESULTS: The literature indicated that several imaging modalities, including conventional radiography, computed tomography, magnetic resonance, and sonography, are being used to evaluate the medial clavicular epiphysis to estimate an individual\'s age in the forensic context. In addition to multiple modalities, researchers are using various staging classification systems, ethnic groups, and interpreter criteria to establish reference data.
    CONCLUSIONS: There is a need to determine the age of individuals involved in civil and criminal proceedings who do not have valid birth date documentation. The clavicle is the last bone in the human body to complete fusion. The clavicle begins to fuse in the early teens and completes medial epiphyseal fusion in the late 20s. Clavicle fusion spans the legally significant age range of 18 through 21. Multiple variables influence the final age estimation, including interpreters\' experience, the individual\'s socioeconomic class or area of origin, and limitations within the imaging modalities.
    CONCLUSIONS: Computed tomography is the modality of choice for forensic age estimation using the medial clavicular epiphysis. Radiologic technologists should be cognizant of current forensic age estimation practices, and future research should continue to provide reference data to improve accuracy of age estimation in those individuals who lack documentation of their date of birth.
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  • 文章类型: Comparative Study
    当前版本(ver.7.3)流行的定量冠状动脉分析系统QangioXA(Medis医学成像系统BV,莱顿,荷兰)在没有评估当前版本与旧版本之间关于算法更改的协议的情况下被广泛使用。这项研究的目的是评估QAngioXA版本7.3和6.0之间的平均值的等效性。根据计算的样本量,我们从两项已发表的研究(OUCH-TL:154个病灶;OUCH-PRO:160个病灶)中随机选取了100例接受单靶病灶经皮冠状动脉介入治疗的患者的血管造影图像.主要终点是最小管腔直径(MLD),次要终点是狭窄病变的参考直径(RefD)和长度(LL)。两名独立分析师使用QAngioXA的先前和当前版本测量了同一帧。根据靶向的冠状动脉位置随机确定每个病变的版本顺序。通过使用混合模型分析数据,该模型包括随机病变效应,固定评分者效应和阅读顺序效应。Bland-Altman参数图显示版本之间没有很大差异。参数的差异由混合模型估计,和MLD的95%置信区间,RefD,LL估计值从-0.045到-0.0001毫米,从-0.040到0.006mm,从-1.08到0.46毫米,分别,与预定义的±0.2mm的非劣效性边缘相比。使用QAngioXA对MLD和RefD的测量显示版本之间没有重大的系统差异。
    The current version (ver. 7.3) of the popular quantitative coronary analysis system QAngio XA (Medis Medical Imaging System BV, Leiden, the Netherlands) is widely used without evaluating the agreement between the current and older versions in relation to a change of algorithms. The purpose of this study was to assess the equivalence of averages between QAngio XA versions 7.3 and 6.0. Based on the calculated sample size, angiographic images of 100 patients who underwent percutaneous coronary intervention of a single target lesion were randomly selected from two published studies (OUCH-TL: 154 lesions; OUCH-PRO: 160 lesions). The primary endpoint was the minimum lumen diameter (MLD), and the secondary endpoints were the reference diameter (RefD) and length of the stenotic lesion (LL). Two independent analysts measured the same frame using both previous and current versions of QAngio XA. Version-order for each lesion was randomly determined per coronary locations targeted. Data were analysed by using a mixed model that includes random lesion effects and fixed rater effects and reading-order effects. A Bland-Altman plot of parameters showed no large differences between the versions. Differences in parameters were estimated by the mixed model, and the 95% confidence interval of the MLD, RefD, and LL estimates was from -0.045 to -0.0001 mm, from -0.040 to 0.006 mm, and from -1.08 to 0.46 mm, respectively, compared with the predefined non-inferiority margin of ±0.2 mm. Measurements of MLD and RefD using QAngio XA showed no major systematic differences between versions.
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