Radiology Research and Practice最新文献

{"title":"Prognostic Significance of the Criteria for Metastatic Involvement of Regional Lymph Nodes in Cervical Cancer According to Magnetic Resonance Imaging Findings","authors":"E. G. Zhuk, I. Kosenko","doi":"10.52560/2713-0118-2023-1-30-39","DOIUrl":"https://doi.org/10.52560/2713-0118-2023-1-30-39","url":null,"abstract":"The objective of this study is to assess the criteria for metastatic involvement of the LN (MLN) according to magnetic resonance imaging (MRI) and to identify the most prognostically significant. The MRI data of 159 removed LN were compared with the results of a morphological study of the resected preparations. ROC- analysis (Receiver Operating Characteristic curve) was used to determine the diagnostic performance of threshold values. The test performance was evaluated depending on the area under the ROC curve — the AUC parameter (Area Under Curve). In order to evaluate the prognostic significance of MRI predictors for metastatic involvement of the LN, uni-and multivariate regression logistic analyses were performed. According to the results of multivariate analysis, the configuration index is less than or equal to 1.65, the absence of a signal from the fatty tissue of the hilum of LN, and perinodular edema are the most prognostically significant criteria for metastatic involvement of the LN (p < 0.05).","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87772327","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":"Magnetic Resonance Imaging of Subchondral Insufficiency Fracture of the Medial Femoral Condyle (Clinical Case)","authors":"A. Ivankov, P. Seliverstov","doi":"10.52560/2713-0118-2023-1-72-82","DOIUrl":"https://doi.org/10.52560/2713-0118-2023-1-72-82","url":null,"abstract":"A clinical example is presented that demonstrates the capabilities of magnetic resonance imaging (MRI) in the diagnosis of a subchondral insufficiency fracture of the medial femoral condyle. An MR study protocol has been demonstrated that allows ensure successful diagnosis of this type of fracture.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78313801","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":"Neurogenic Аrthropathy, Сhronic Osteomyelitis, Diabetic Foot: Differential X-Ray and MSCT Diagnostics","authors":"G. Diachkova, A. Sudnitsyn, N. Klyushin, A. Burtsev, K. A. Diachkov, E. V. Khieva","doi":"10.52560/2713-0118-2023-1-10-29","DOIUrl":"https://doi.org/10.52560/2713-0118-2023-1-10-29","url":null,"abstract":"X-ray and MSCT-differential diagnostics between neurogenic arthropathy, diabetic osteoneuroarthropathy (DONAP), complicated by osteomyelitis and chronic osteomyelitis, has not been studied enough.The purpose of the study was to study the MSCT semiotics of various variants of neurogenic arthropathy, DONAP complicated by osteomyelitis and chronic post-traumatic osteomyelitis in order to substantiate etiopathogenetic treatment. In 44 patients with neurogenic arthropathy, DONAP, complicated by osteomyelitis and chronic osteomyelitis, the results of polypositional radiography, MSCT were studied before treatment for the purpose of differential diagnosis. Single center retrospective study. MSCT and x-ray revealed differential diagnostics differences between neurogenic arthropathy, DONAP, complicated by osteomyelitis and chronic osteomyelitis. They are manifested by the localization of destructive processes, characteristic changes in the angles of the foot and a violation of the architectonics of the bones, concomitant changes in blood vessels and soft tissues. Neurogenic arthropathy is characterized by disorganization of the joints, bone resorption, giving the impression of surgical amputation, sharpening of the ends of the metatarsal bones, a symptom of «pestle in a mortar», a violation of the structure of spongy bones. DONAP is manifested by pronounced destructive changes in the midfoot, collapse of the tarsal bones with defects, fragmentation, vascular calcifications (Menckeberg), a «pathological» reference line, an increase in the Meary angle, a decrease in the angle of the calcaneus, and a «rocking foot», increased density of the calcaneus. Chronic osteomyelitis is characterized by an isolated lesion of one or more bones; the presence of a fistulous tract, focal disorders of the trabecular pattern, a decrease in the density of adjacent bones, the presence of isolated foci of sclerosis.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89969474","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":"Prospects of the Magnetic Resonance Imaging Method for Assessing the Bioelastic Function of the Aortic Wall","authors":"K. R. Bril’, A. Pronkin, T. N. Galyan, М. V. Malakhova, V. Usov, V. V. Khovrin","doi":"10.52560/2713-0118-2023-1-40-51","DOIUrl":"https://doi.org/10.52560/2713-0118-2023-1-40-51","url":null,"abstract":"The distinct growth of cardiovascular diseases (CVD) and aortic diseases in the world requires accurate diagnostic methods for their early prediction. In modern research, more and more attention is paid to biomechanics and numerical models of accurate quantitative calculations. The assessment of aortic pathology using magnetic resonance imaging (MRI) acquires great clinical significance, since it makes it possible to simultaneously assess the anatomical topography and physical properties of the aorta. A broad study of changing biomechanical processes will complement the existing ideas about the basics of aneurysm formation and aortic dissection. MRI is a modern non-invasive method that provides the necessary data to as-sess the physical properties of the wall and directional flows in the aorta.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78931204","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":"Evaluation of the Practice of Performing Abdominal CT Scan with Manually Administered Fixed Dose of Contrast in Achieving Adequate Hepatic Enhancement: An Institutional-Based Cross-Sectional Study.","authors":"Tesfaye Kebede Legesse,&nbsp;Mekdelawit Mengistu Getaneh,&nbsp;Semira Abrar Issa","doi":"10.1155/2023/9563310","DOIUrl":"https://doi.org/10.1155/2023/9563310","url":null,"abstract":"<p><strong>Background: </strong>Intravenous (IV) iodine-based contrast agents are administered during computed tomography (CT) examination to enhance the density differences between lesions and surrounding parenchyma, which is important for lesion characterization, and to demonstrate vascular anatomy and vessel patency. Quality of contrast enhancement has a significant influence on diagnostic interpretation and subsequent management. In this study, we assessed the quality of portal venous phase abdominal CT scans performed with a manual injection of a fixed dose of contrast, which is the routine practice at Tikur Anbessa Specialized Hospital (TASH). The effect of age and sex was also assessed.</p><p><strong>Method: </strong>A hospital-based retrospective review was performed to identify patients who have had a precontrast and postcontrast abdominal CT scan from November 4, 2020, to September 30, 2022. All patients with abdominal CT scans having precontrast and portal venous phase scans were included in the study. All CT scans were reviewed by the principal investigator and the quality of contrast enhancement was assessed.</p><p><strong>Results: </strong>In this study, there were a total of 379 patients. The mean hepatic attenuations in precontrast and portal venous phase scans were 59.05 ± 6.69 HU and 103.73 ± 12.84 HU. The proportion of scans with less than 50 HU enhancement was 68% (<i>n</i> = 258). There was a significant association between age and sex with contrast enhancement.</p><p><strong>Conclusion: </strong>The hepatic contrast enhancement pattern of abdominal CT scan at the study institution reveals a concerning degree of image quality. This is evidenced by the high number of suboptimal contrast enhancement indices and the highly variable enhancement patterns across different patients. This can have a negative impact on the diagnostic performance of CT imaging and can adversely affect the management. Furthermore, both sex and age affect the pattern of enhancement.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9974242/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9388096","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":"Evaluation of Iodinated Contrast Media Use in Abdominal CT Scans in Cancer Assessments: A Cross-Sectional Study in Lomé (Togo).","authors":"Pihou Gbande,&nbsp;Bidamin N'timon,&nbsp;Dermane Alassani Tchakpedeou,&nbsp;Mazamaesso Tchaou,&nbsp;Kokou Adambounou,&nbsp;Lantam Sonhaye,&nbsp;Lama Kegdigoma Agoda-Koussema,&nbsp;Komlanvi Adjenou","doi":"10.1155/2023/8296467","DOIUrl":"https://doi.org/10.1155/2023/8296467","url":null,"abstract":"<p><strong>Background: </strong>There is great variability between centers regarding contrast injection protocols. They should only be injected if they can provide useful information for diagnosis with the necessary and sufficient quantity of iodine. We wanted to know through this study if the use of iodinated contrast media is optimised in abdominal CT scans performed for cancer assessment in Lomé.</p><p><strong>Materials and methods: </strong>It was a cross-sectional, descriptive, and analytical study with a prospective collection over a period of 6 months in three CT units in Lomé. It involved abdominal CT scans performed for oncological evaluation. Data were reported as the mean ± standard deviation. The Pearson correlation coefficient, ANOVA, chi-square, and the Fisher test were used.</p><p><strong>Results: </strong>A total of 218 examinations were recorded. The female sex represented 56.88% of the patients. The mean age was 50.92 ± 15.78 years. The mean weight was 70.46 ± 15.23 kg. The mean BMI was 24.91 ± 5.32 kg/m². The examinations were performed with a voltage of 120 kV in 195 cases (89.45%). The mean dose of injected iodine was 0.42 ± 0.09 gI/kg with a dose of 0.40 gI/kg at 80 kV and 0.45 gI/kg at 130 kV. The mean injection rate was 2.90 ± 0.34 mL/s. The mean injected volume was 83.19 ± 7.29 mL. The mean duration of the injection was 30.60 ± 7.39 s. The mean iodine delivery rate was 0.98 ± 0.17 gI/s. There was no saline injection in 152 cases (69.72%). Liver contrast enhancement was satisfactory in 94.5% of cases. There was a strong negative linear correlation between the dose of injected iodine and weight.</p><p><strong>Conclusions: </strong>Optimization guidelines for the use of iodinated contrast media are not always applied. Therefore, monitoring and benchmarking programmes for iodinated contrast injection protocols that involve all radiology personnel should be implemented.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9836791/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10540954","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":"Evaluation of Electrocardiogram-Gated Computed Tomography Angiography to Quantify Changes in Geometry and Dynamic Behavior during the Cardiac Cycle of the Nellix Endovascular Sealing System.","authors":"Leo H Van Den Ham,&nbsp;Talar Lazarian,&nbsp;Erik Groot Jebbink,&nbsp;Jan-Willem Lardenoije,&nbsp;Clark J Zeebregts,&nbsp;Michel M P J Reijnen","doi":"10.1155/2023/3721185","DOIUrl":"https://doi.org/10.1155/2023/3721185","url":null,"abstract":"Background The Nellix endovascular sealing system (EVAS) was a unique concept with regard to its sealing concept that failed, related to high migration rates. We investigated the changes in aortoiliac morphology during the cardiac cycle before and after EVAS using electrocardiography (ECG)-gated CT. Methods Eight patients scheduled for EVAS were prospectively enrolled. ECG-gated CT scans were made pre- and postoperatively. Measurements were performed in the mid-systolic and mid-diastolic phases. Endpoints were changes in infrarenal aortoiliac morphology postoperatively compared to preoperatively and their changes in the cardiac cycle. Results Both pre- and postoperatively, there were no changes during the cardiac cycle. EVAS caused an increase in neck diameter and surface in both phases (p < 0.001). EVAS increased the luminal AAA volume (p < 0.001), with a decrease in thrombus volume (p < 0.001) in both phases and an increase in total volume (p < 0.001) in the systolic phase. During follow-up, one patient presented with >5 mm migration. There were no differences in the movements of this patient compared to the remaining patients. Conclusion The cardiac cycle had a very limited effect on the aortoiliac dynamics before and after EVAS and, therefore, there is probably not a role for ECG-gated CT in enhanced surveillance programs. EVAS itself has a significant impact on anatomy, particularly the neck diameter, length, and volumes of the AAA.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10307170/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10114978","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":"Assessing the Level of Understanding (Knowledge) and Awareness of Diagnostic Imaging Students in Ghana on Artificial Intelligence and Its Applications in Medical Imaging.","authors":"James William Ampofo,&nbsp;Christian Ven Emery,&nbsp;Ishmael Nii Ofori","doi":"10.1155/2023/4704342","DOIUrl":"https://doi.org/10.1155/2023/4704342","url":null,"abstract":"<p><strong>Introduction: </strong>Recent advancements in technology have propelled the applications of artificial intelligence (AI) in various sectors, including healthcare. Medical imaging has benefited from AI by reducing radiation risks through algorithms used in examinations, referral protocols, and scan justification. This research work assessed the level of knowledge and awareness of 225 second- to fourth-year medical imaging students from public universities in Ghana about AI and its prospects in medical imaging.</p><p><strong>Methods: </strong>This was a cross-sectional quantitative study design that used a closed-ended questionnaire with dichotomous questions, designed on Google Forms, and distributed to students through their various class WhatsApp platforms. Responses were entered into an Excel spreadsheet and analyzed with the Statistical Package for the Social Sciences (SPSS) software version 25.0 and Microsoft Excel 2016 version.</p><p><strong>Results: </strong>The response rate was 80.44% (181/225), out of which 97 (53.6%) were male, 82 (45.3%) were female, and 2 (1.1%) preferred not to disclose their gender. Among these, 133 (73.5%) knew that AI had been incorporated into current imaging modalities, and 143 (79.0%) were aware of AI's emergence in medical imaging. However, only 97 (53.6%) were aware of the gradual emergence of AI in the radiography industry in Ghana. Furthermore, 160 people (88.4%) expressed an interest in learning more about AI and its applications in medical imaging. Less than one-third (32%) knew about the general basic application of AI in patient positioning and protocol selection. And nearly two-thirds (65%) either felt threatened or unsure about their job security due to the incorporation of AI technology in medical imaging equipment. Less than half (38% and 43%) of the participants acknowledged that current clinical internships helped them appreciate the role of AI in medical imaging or increase their level of knowledge in AI, respectively. <i>Discussion</i>. Generally, the findings indicate that medical imaging students have fair knowledge about AI and its prospects in medical imaging but lack in-depth knowledge. However, they lacked the requisite awareness of AI's emergence in radiography practice in Ghana. They also showed a lack of knowledge of some general basic applications of AI in modern imaging equipment. Additionally, they showed some level of misconception about the role AI plays in the job of the radiographer.</p><p><strong>Conclusion: </strong>Decision-makers should implement educational policies that integrate AI education into the current medical imaging curriculum to prepare students for the future. Students should also be practically exposed to the various incorporations of AI technology in current medical imaging equipment.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10287516/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10075329","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 Effect of Changes in the Angular Position of Implants on Metal Artifact Reduction in Cone-Beam Computed Tomography Images: A Scoping Review.","authors":"Maedeh Asnaashari,&nbsp;Maryam Sadeghipour,&nbsp;Zeinab Bahrani,&nbsp;Solmaz Valizadeh,&nbsp;Mahkameh Moshfeghi","doi":"10.1155/2023/5539719","DOIUrl":"https://doi.org/10.1155/2023/5539719","url":null,"abstract":"<p><strong>Objective: </strong>Dental implant artifacts can compromise the quality of cone-beam computed tomography (CBCT) scans and challenge radiographic detection in surrounding regions. This literature review was conducted to examine the impact of implant angle modification on reducing metal artifacts in CBCT scans.</p><p><strong>Materials and methods: </strong>A scoping review of literature was carried out in PubMed, Embase, Scopus, and Cochrane databases.</p><p><strong>Results: </strong>Different spatial planes, including alpha, beta, gamma, and phi, along with 0°, 5.2°, 9.8°, 14.5°, 15°, 30°, 45°, 60°, 75°, and 90° angles were studied. Changes in the angular position of implants may reduce metal artifacts and improve the quality of CBCT scans.</p><p><strong>Conclusions: </strong>Rotating implants within the alpha plane and angling them at 90° in the alpha plane enables reducing dental implant artifacts.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10406552/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10337581","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":"Evaluating the Outcome of an Unnecessary Request for CT Scan in Be'sat Hospital of Hamadan.","authors":"Hossein Khosravi,&nbsp;Mohammad Hamidi,&nbsp;Safoora Nikzad,&nbsp;Leili Tapak","doi":"10.1155/2023/3709015","DOIUrl":"https://doi.org/10.1155/2023/3709015","url":null,"abstract":"<p><strong>Aim: </strong>This study aimed to investigate the frequency of unnecessary tests requested in Be'sat Hospital in Hamadan.</p><p><strong>Materials and methods: </strong>This descriptive research was conducted in order to investigate the frequency of unnecessary requests for CT scan and radiography of patients referring to the imaging department of Be'sat Hospital in Hamadan in a 4- to 6-month period. Patient information, including gender, age, type of CT scan test, the reason for requesting the test, the expertise of the requesting physician, and the result of the radiologist's report on each test, was extracted and collected.</p><p><strong>Results: </strong>A total of 1000 CT scans were evaluated. The mean age of these patients was about 36 years and most of them were men. The highest and lowest percentages of unnecessary cases were related to CT scans of the brain (42.3%) and facial bones (2.3%), respectively. The most and the least unnecessary CT scans based on the reason given for the request were related to multiple physical trauma (30.7%) and chronic kidney disease (1.5%), respectively.</p><p><strong>Conclusion: </strong>In all tests, over 74% of the reports were unnecessary and less than 26% were necessary. Therefore, it is necessary to reduce unnecessary requests to reduce the radiation dose of patients. Also, the knowledge of doctors should be increased in the field of appropriate evaluation of CT scan tests based on clinical guidelines.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9977522/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10854184","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}