Radiology Research and Practice最新文献

{"title":"Venous Angioma of the Deep Brain Structures which Caused Aqueductal Stenosis (Сlinical Case and the Review of the Literature)","authors":"K. Solozhentseva, K. Shevchenko, N. Zakharova, R. Afandiev, I. Pronin","doi":"10.52560/2713-0118-2022-1-101-108","DOIUrl":"https://doi.org/10.52560/2713-0118-2022-1-101-108","url":null,"abstract":"Venous angioma is a common developmental abnormality of the cerebral venous vessels. Usually, this pathology is not accompanied by any symptoms and is detected accidentally during MRI studies conducted for other reasons. In our article, we present a rare clinical case when venous angioma caused symptoms due to its location, which led to the development of the aqueductal stenosis.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"6 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84956993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prevalence and Risk Factors of Work-Related Lower Back Pain among Radiographers in the State of Kuwait.","authors":"Hesham N Alrowayeh,&nbsp;Musaed Z Alnaser,&nbsp;Talal A Alshatti,&nbsp;Raed S Saeed","doi":"10.1155/2021/5365260","DOIUrl":"https://doi.org/10.1155/2021/5365260","url":null,"abstract":"<p><strong>Background: </strong>Work-related lower back pain (WrLBP) is a global health issue and a rising concern in the State of Kuwait. The prevalence and the risk factors of WrLBP among radiographers are not well documented.</p><p><strong>Objective: </strong>The purpose of the study was to determine the one-year prevalence, characteristics, impact, and physical risk factors of WrLBP among radiographers in the State of Kuwait.</p><p><strong>Methods: </strong>A self-administered questionnaire was distributed to 200 radiographers. The questionnaire collected data on demographics, physical risk factors, and the occurrence of WrLBP in the previous 12 months. Descriptive statistics, frequency calculations, and chi-square analyses were performed.</p><p><strong>Results: </strong>One hundred forty-six radiographers completed and returned the questionnaires with a response rate of 73% (146/200). The one-year prevalence of WrLBP was 16%. The prevalence of WrLBP was not significantly associated with the participants' demographics. Although WrLBP was significantly associated with work demands, the overall impact of WrLBP on work duties was minimal.</p><p><strong>Conclusions: </strong>The occurrence of WrLBP among radiographers in Kuwait was low, particularly when compared to healthcare providers involved in more patient handling and direct contact. However, various physical risk factors were identified. Further research is needed to investigate the effect of a treatment and prevention program on the prevalence of WrLBP.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"2021 ","pages":"5365260"},"PeriodicalIF":2.7,"publicationDate":"2021-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8664547/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39719709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diagnosis of Spinal Metameric Arteriovenous Malformation Syndrome (Case Report)","authors":"E. V. Rasulova, I. Pronin, R. Afandiev, N. Zakharova","doi":"10.52560/2713-0118-2022-1-91-100","DOIUrl":"https://doi.org/10.52560/2713-0118-2022-1-91-100","url":null,"abstract":"This paper presents a rare case of spinal arteriovenous metameric syndrome (SAVMS) with lesions localized in the lower thoracic spine with the presence of two closely spaced arteriovenous malformations intramedullary and extradural (intravertebral) localization. The possibilities of minimally invasive contrast dynamic MR-angiography (TRICKS) in the diagnosis of the main components of vascular malformations and in determining the level of their arterial blood supply have been demonstrated.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"19 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2021-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87507022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experience of Application of Magnetic Resonance Myelography Methods in Patients with Neurological and Neurosurgical Pathology","authors":"O. Bogomyakova, L. M. Vasilkiv, Y. Stankevich, A. Savelov, A. Tulupov","doi":"10.52560/2713-0118-2022-1-45-62","DOIUrl":"https://doi.org/10.52560/2713-0118-2022-1-45-62","url":null,"abstract":"Purpose — to study the possibilities of clinical application of MR-myelography techniques in static and dynamic modes in patients with various neurological and neurosurgical pathologies accompanied by CSF dynamics disorders. On the Philips 1.5 and 3.0 T MRI scanners, an extended protocol for examination of patients with cerebrospinal fluid disorders was presented. The protocol includes, in addition to routine sequences (T1-, T2-WI, FLAIR), thin-slice MP-myelography in a static mode (CSF-DRIVE, 3DMYUR) with soft tissues signal suppression. Also, a cinema-technique of MR myelography (CSF-PCA) in the optimal projection and a phase-contrast method with a quantitative assessment of the cerebrospinal fluid flow at the pathology level and at adjacent levels were performed. The assessment of the diagnostic significance of the proposed research protocol was carried out. The extended study protocol was applied in patients with idiopathic normotensive hydrocephalus, obstructive hydrocephalus, Chiari malformation type I, in patients with syringomyelia at the level of the cervical spinal cord and showed high efficiency in assessing of cerebrospinal fluid dynamics in patients with a neurological and neurosurgical profile. The use of extended approach allows to more fully evaluate the state of the cerebrospinal fluid system, the patency of the cerebrospinal fluid (the presence of additional septa / membranes, partial / complete stenosis and narrowing), as well as preand postoperative morpho-functional changes.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"46 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2021-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88530958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diffusion-tensor and Diffusion-kurtosis Magnetic Resonance Imaging in the Assessment of Diffuse Axonal Injury (Literature Review)","authors":"R. Afandiev, N. Zakharova, E. Pogosbekyan, A. Potapov, I. Pronin","doi":"10.52560/2713-0118-2022-1-77-90","DOIUrl":"https://doi.org/10.52560/2713-0118-2022-1-77-90","url":null,"abstract":"Traumatic brain injury (TBI) is the main cause of disability and mortality among young people, and neurological dysfunctions can persist many years after injury. One of the main type of TBI is diffuse axonal injury (DAI). The prevalence of diffuse axonal injury is often underestimated in computed tomography (CT) and routine magnetic resonance imaging (MRI). In such cases, diffusion-tensor MRI (DT MRI) and diffusion-kurtosis MRI (DK MRI) provide additional information about the integrity of the brain tissue, which cannot be obtained using standard MRI. In this review, we examined the contribution of DT MRI and DK MRI methods to understanding the pathophysiology and prognosis of DAI to help experts interested in planning new studies and participating in the care of patients with TBI.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"114 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90780473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of Phase Estimation Methods for Quantitative Susceptibility Mapping Using a Rotating-Tube Phantom.","authors":"Kathryn E Keenan, Ben P Berman, Slávka Rýger, Stephen E Russek, Wen-Tung Wang, John A Butman, Dzung L Pham, Joseph Dagher","doi":"10.1155/2021/1898461","DOIUrl":"10.1155/2021/1898461","url":null,"abstract":"<p><p>Quantitative Susceptibility Mapping (QSM) is an MRI tool with the potential to reveal pathological changes from magnetic susceptibility measurements. Before phase data can be used to recover susceptibility (Δ<i>χ</i>), the QSM process begins with two steps: data acquisition and phase estimation. We assess the performance of these steps, when applied without user intervention, on several variations of a phantom imaging task. We used a rotating-tube phantom with five tubes ranging from Δ<i>χ</i>=0.05 ppm to Δ<i>χ</i>=0.336 ppm. MRI data was acquired at nine angles of rotation for four different pulse sequences. The images were processed by 10 phase estimation algorithms including Laplacian, region-growing, branch-cut, temporal unwrapping, and maximum-likelihood methods, resulting in approximately 90 different combinations of data acquisition and phase estimation methods. We analyzed errors between measured and expected phases using the probability mass function and Cumulative Distribution Function. Repeatable acquisition and estimation methods were identified based on the probability of relative phase errors. For single-echo GRE and segmented EPI sequences, a region-growing method was most reliable with Pr (relative error <0.1) = 0.95 and 0.90, respectively. For multiecho sequences, a maximum-likelihood method was most reliable with Pr (relative error <0.1) = 0.97. The most repeatable multiecho methods outperformed the most repeatable single-echo methods. We found a wide range of repeatability and reproducibility for off-the-shelf MRI acquisition and phase estimation approaches, and this variability may prevent the techniques from being widely integrated in clinical workflows. The error was dominated in many cases by spatially discontinuous phase unwrapping errors. Any postprocessing applied on erroneous phase estimates, such as QSM's background field removal and dipole inversion, would suffer from error propagation. Our paradigm identifies methods that yield consistent and accurate phase estimates that would ultimately yield consistent and accurate Δ<i>χ</i> estimates.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"2021 ","pages":"1898461"},"PeriodicalIF":2.7,"publicationDate":"2021-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8635951/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39695823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Appendiceal Intraluminal Gas: A CT Marker for Gangrenous Appendicitis.","authors":"Chantelle Ip,&nbsp;Edward H Wang,&nbsp;Michael Croft,&nbsp;Wanyin Lim","doi":"10.1155/2021/7191348","DOIUrl":"https://doi.org/10.1155/2021/7191348","url":null,"abstract":"<p><strong>Introduction: </strong>This manuscript aims to investigate the amount of intraluminal gas in acute, nonperforated appendicitis identified on computed tomography (CT) in diagnosing gangrenous appendicitis.</p><p><strong>Methods: </strong>This is a retrospective observational, case-control study with consecutive data collected at a tertiary institution over a two-year period, of patients with CT-diagnosed acute appendicitis who subsequently went on for surgery within 48 hours. Patients who were less than 16 years old, who had an interval between CT and surgery of more than 48 hours, or with CT evidence of appendiceal perforation were excluded. Images were independently assessed by 3 radiologists for intraluminal gas, and the results were then correlated with reference standards obtained from surgical and histopathology reports for the diagnosis of nongangrenous versus gangrenous appendicitis. The sensitivity, specificity, and predictive values of CT intraluminal gas in gangrenous appendicitis were calculated.</p><p><strong>Results: </strong>Our study identified 93 patients with nonperforated acute appendicitis who underwent surgery within the stated timeframe. Intraluminal gas in the appendix was identified in 26 patients (28%), of which 54% had macroscopic and/or microscopic evidence of gangrenous appendicitis. This is in contrast to the subgroup of patients who did not have intraluminal gas (72%), of which only 33% had gangrenous appendicitis. The specificity of intraluminal gas for gangrenous appendicitis is 79%, with a negative predictive value of 86% and likelihood ratio of 1.85.</p><p><strong>Conclusion: </strong>In cases of established acute appendicitis, the presence of intraluminal gas is a moderately specific sign for gangrenous complication. This is worth reporting as it can help prognosticate and triage patients accordingly, for a timelier surgical management and a better outcome.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"2021 ","pages":"7191348"},"PeriodicalIF":2.7,"publicationDate":"2021-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8629666/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39683514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Role of high-resolution Magnetic Resonance Imaging at Different Stages of Subchondral Insufficiency Fracture in the Knee","authors":"A. Ivankov, P. Seliverstov","doi":"10.52560/60/2713-0118-2022-2-24-32","DOIUrl":"https://doi.org/10.52560/60/2713-0118-2022-2-24-32","url":null,"abstract":"The  history of subchondral insufficiency fracture of knee is closely related to a pre-existing diagnosis of  spontaneous osteonecrosis (SONK). Previously,  it  was believed that  subchondral linear or lunate pathological changes on magnetic resonance imaging in elderly patients with osteoporosis are the result of spontaneous osteonecrosis that has occurred, but it was later found that a small proportion of patients with osteonecrosis of the femoral head initially  have a failure fracture, then complicated by secondary osteonecrosis. The main methods for diagnosing subchondral insufficiency fracture are radiography and magnetic resonance imaging. Magnetic  resonance imaging has demonstrated high information content in subchondral insufficiency fracture of knee.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"174 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79633986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Occurrence of the Elongated Styloid Process on Digital Panoramic Radiographs in the Riyadh Population.","authors":"Lingam Amara Swapna,&nbsp;Nada Tarek AlMegbil,&nbsp;Alhanouf Othman Almutlaq,&nbsp;Pradeep Koppolu","doi":"10.1155/2021/6097795","DOIUrl":"https://doi.org/10.1155/2021/6097795","url":null,"abstract":"<p><strong>Background: </strong>Patients with an elongated styloid process might present with dysphagia and pain in the cervicofacial region. These patients could be misdiagnosed as other orofacial pathologies.</p><p><strong>Aim: </strong>The present study attempted to assess the prevalence of the elongated styloid process on digital panoramic radiographs in the Riyadh population.</p><p><strong>Materials and methods: </strong>The present prospective randomized study was conducted on the panoramic digital radiographs of 300 randomly selected patients visiting a private dental hospital to identify any elongation of the styloid process. Only the radiographs without any magnification errors were considered. The styloid process length was measured using the Sidexis measuring tool and entered in an Excel spreadsheet with other demographic data. A length beyond 30 mm was considered styloid process elongation. The data were subjected to statistical analysis.</p><p><strong>Results: </strong>The symptoms of styloid process elongation were higher among females (78.6%), and this difference was statistically significant (<i>χ</i> ² = 7.182; <i>P</i>=0.007). No statistically significant association was observed between styloid process elongation and symptoms between different age groups. Females exhibited a significant longer mean length of the styloid process than males. The present study exhibited a 27.3% prevalence for the elongation and calcification of the styloid process.</p><p><strong>Conclusion: </strong>Given the significant prevalence of the elongated styloid process in our study, we recommend it to be considered as one of the differential diagnosis for pain or discomfort in the orofacial region.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"2021 ","pages":"6097795"},"PeriodicalIF":2.7,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8601818/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39644411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuberous Sclerosis in the Practice of Ultrasound Specialist: a Literature Review with our Own Observations","authors":"S. Cherdantseva, Yulia Cherdantseva, O. P. Kanailova, M. E. Svishcheva","doi":"10.52560/60/2713-0118-2022-2-49-64","DOIUrl":"https://doi.org/10.52560/60/2713-0118-2022-2-49-64","url":null,"abstract":"Tuberous sclerosis (TBS) is a genetically determined orphan disease when many benign tumors (hamartomas) are formed in various organs and systems. The complexity of diagnosis is associated with a wide variety of clinical forms of the disease. Despite the benign nature of hamartomas, they cause dysfunction of the body, which leads to disability and a reduction in the life expectancy of patients. The lesions of the brain and heart are most characteristic for the early onset of the disease in infants and neonatal children. The article presents morphological changes in the central nervous system and heart, compares these changes with ultrasound and magnetic resonance imaging data. With the help of two clinical cases, the high sensitivity of neurosonography, as the primary method of examination of the brain, and the possibility of early diagnostics of the tuberous-sclerosis complex are shown. The publication also contains a literature review, clinical and diagnostic criteria of tuberous sclerosis, brief information about pathogenetic treatment in young children and a large number of illustrations.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"14 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2021-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86031852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}