International Journal of Medical Imaging最新文献

{"title":"Evaluation of Trackability Test Method for Intracranial Aneurysm Flow Diverter System Using Simulated Neurovascular Model","authors":"Minocha Dr. Pramod Kumar, Kothwala Dr. Deveshkumar Mahendralal, Shaikh Amirhamzah Mahmadiqbal, Patel Chirag Jitubhai","doi":"10.11648/j.ijmi.20231102.14","DOIUrl":"https://doi.org/10.11648/j.ijmi.20231102.14","url":null,"abstract":"","PeriodicalId":117142,"journal":{"name":"International Journal of Medical Imaging","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139370447","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":"Value of ¹⁸F-FDG PET-CT and MR Fusion in Preoperative Diagnosis and Staging of Pancreatic Cancer","authors":"Yan Xiu-jin","doi":"10.11648/j.ijmi.20231102.12","DOIUrl":"https://doi.org/10.11648/j.ijmi.20231102.12","url":null,"abstract":"","PeriodicalId":117142,"journal":{"name":"International Journal of Medical Imaging","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124809394","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":"The Influence of Post-Acquisition Image Processing on a Radiomic Signature Constructed from Planar Images","authors":"Tamarisk du Plessis, Gopika Ramkilawon, C. Van de Wiele, Mike M. Sathekge","doi":"10.11648/j.ijmi.20231102.13","DOIUrl":"https://doi.org/10.11648/j.ijmi.20231102.13","url":null,"abstract":"","PeriodicalId":117142,"journal":{"name":"International Journal of Medical Imaging","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132397038","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":"Clinicians’ Perceptions of Breast Ultrasound Reporting for Women Using the BI-RADS Lexicon at a Tertiary Hospital in Uganda: An Exploratory Qualitative Study","authors":"Aloysius Gonzaga Mubuuke, Francis Businge, E. Murachi","doi":"10.11648/j.ijmi.20231102.11","DOIUrl":"https://doi.org/10.11648/j.ijmi.20231102.11","url":null,"abstract":"","PeriodicalId":117142,"journal":{"name":"International Journal of Medical Imaging","volume":"253 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133157412","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":"Evaluated the Correlation Between Serum Ferritin and Iron Overload of Liver, Spleen and Heart in β-Thalassemia Major Patients by MRI T2^* Method","authors":"Nga Thi Ho Nguyen, Phuoc Van Le, Phuoc Thanh Bui, Dung Van Le, Lam Hoang Nguyen, Van Bich Thi Le, Pham Van Bui","doi":"10.11648/j.ijmi.20231101.14","DOIUrl":"https://doi.org/10.11648/j.ijmi.20231101.14","url":null,"abstract":"","PeriodicalId":117142,"journal":{"name":"International Journal of Medical Imaging","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130067056","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":"Examining the Decision of Radiographers in the Selection of Computed Tomography Scan Radiation Doses","authors":"Geoffrey Erem, W. Olwit, Aloysius Gonzaga Mubuuke, Caroline Otike, Jacob Godfrey Agea, Akisophel Kisolo, Michael Grace Kawooya, C. Schandorf","doi":"10.11648/j.ijmi.20231101.13","DOIUrl":"https://doi.org/10.11648/j.ijmi.20231101.13","url":null,"abstract":": Medical radiation is a controllable source and should be applied on individualized basis to determine whether each patient fits the appropriate criteria for the diagnostic procedure. Appropriate justification of requested CT examinations should ensure that benefits outweigh the risk. CT scan protocols and radiation doses vary greatly across countries and are primarily attributable to local choices regarding technical parameters, rather than the patient, institution, or machine characteristics. These variations call for optimization of doses to consistent standards. This was a mixed methods study, with quantitative and qualitative approaches, undertaken in Uganda. This study involved radiographers scoring the effects of various CT best-practices on dose selection using a Likert scale. The qualitative component explored factors influencing CT scan technical parameter selection, the barriers, and facilitators to best practices to CT radiation protection. The male to female ratio was 3.5: 1 and the average age was 30 years with a range of 21 – 40 years. The respondents either agreed or strongly agreed that Diagnostic Reference Levels were important in dose selection. Key factors influencing the selection of CT scan doses included CT scan machine, examination time, age and body size. Key barriers to best practices were the type or level of health facility, radiographer, and government level related and the facilitators to best practices also included type or level health facility, radiographer and regulator related. Based on the findings, Diagnostic Reference Levels (DRLs), the make, model and year of manufacture of the CT equipment were important in dose selection. Radiographers had limited training on DRLs, and majority were concerned about the lack of these DRLs. Regular training will be designed and implemented for the radiographers through the professional bodies and the regulator to educate the radiographers about CT radiation scan dose selection to optimize patient radiation dose and image quality.","PeriodicalId":117142,"journal":{"name":"International Journal of Medical Imaging","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125679106","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":"Anatomical Variations of the Willis Circle: A Risk Factor for Brain Lesions in Sickle Cell Patients","authors":"Nwatsock Joseph-Francis, Gharingam Marie Laure, Moulion-Tapouh Jean-Roger, Simoni Paolo, Moifo Boniface","doi":"10.11648/j.ijmi.20231101.11","DOIUrl":"https://doi.org/10.11648/j.ijmi.20231101.11","url":null,"abstract":": Background and objective : The brain lesions observed in sickle cell patients are often known to be due to vessels occlusions. But other factors could be associated with the genesis of these lesions. The objective of this study was to assess the association between the presence of anatomical variations in the Willis circle and that of brain lesions found on MRI in sickle cell patients. Methods : We conducted a bicentric cross-sectional study with retrolective analysis of images at the medical imaging departments of the HUDERF in Brussels (Belgium) and the Yaoundé General Hospital (Cameroon), over a period of 12 months from November 2020 to October 2021. We included 187 homozygous sickle cell patients with documented electrophoresis and brain MRI results. The MRI were carried out in T1, T2, T2*, FLAIR, Diffusion and 3D TOF sequences on Siemens ® 1.5 Tesla devices. The collected data were analyzed using SPSS ® software version 20.0 for Windows ® with a significant p<0.05. Results : The mean age of patients was 8.76 years with no significant difference between the sexes. Variations in the Willis circle were present in 20 cases (10.70%) with a predominance in the posterior hemicircle (6.96% versus 3.74% for the anterior hemicircle; p=0.04). The most common variation was type G corresponding to hypoplasia or absence of the anterior communicating artery in the anterior hemicircle, and hypoplasia or unilateral absence of a posterior communicating artery in the posterior hemicircle. At the parenchymal level, brain lesions were found in 11 cases (5.88%) including ischemic lesions (3.21%) and leukopathies (1.07%). In general, the existence of these lesions was significantly associated with the presence of the Willis circle variations (p=0.01). Conclusion and recommendation : The presence of anatomical variations of the Willis arterial circle in sickle cell patients is associated with the existence of brain lesions. We therefore conclude that anatomical variations of the Willis circle could be an unknown factor increasing the risk of brain damages and therefore morbidity in these patients. We recommend that a larger sample study be conducted to verify our findings.","PeriodicalId":117142,"journal":{"name":"International Journal of Medical Imaging","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134213072","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":"Effect of Continuous Medical Education on Awareness of Clinical Imaging Guidelines Among Imaging Referrers in Sub-Saharan Africa","authors":"Harriet Nalubega Kisembo, Richard Malumba, Ritah Nassanga, F. Ameda, Dina Husseiny Salama, Michael Grace Kawooya","doi":"10.11648/j.ijmi.20231101.12","DOIUrl":"https://doi.org/10.11648/j.ijmi.20231101.12","url":null,"abstract":"","PeriodicalId":117142,"journal":{"name":"International Journal of Medical Imaging","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125537478","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":"Comprehensive Evaluation of Multimodality Imaging in SARS-CoV-2 Patients: A Review","authors":"Nadia Tahouneh, R. Shayan","doi":"10.11648/J.IJMI.20210904.13","DOIUrl":"https://doi.org/10.11648/J.IJMI.20210904.13","url":null,"abstract":"Coronavirus disease 2019 (COVID-19) with its different symptoms has been widespread throughout the world for about two years and it has brought many deaths in different countries. Although the disease has been reported to target lung tissue as the first option but it can also cause damages in the heart and other tissues of the body. Many researches have been done on how to control and manage this pandemic to prevent further spread of this virus. There is always a percentage chance of error with RT-PCR test, when identifying the COVID-19, which was used as the first method of diagnosing the disease. In emergencies, low sensitivity of RT-PCR could lead to misdiagnosis of this virus. So, different imaging modalities can provide aid to detect the virus more precisely. So far, Radiology imaging especially Chest CT has played an important role in the process of recognizing the disease and in many cases, it has rushed to the aid of the healthcare staff for determining the stages and controlling of the disease. Although a number of countries have made good progress in the field of vaccines, it is very important for staff to know the advantages and disadvantages of each imaging modality in the disease assessment procedures, so that they can use them wisely to accelerate the elimination process of the disease. With this approach, this paper is an overview of various capabilities of different imaging modalities in the field of better management of SARS-CoV-2 disease.","PeriodicalId":117142,"journal":{"name":"International Journal of Medical Imaging","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122846367","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":"Diagnostic Performance of HRCT Scan of Chest in the Evaluation of COVID-19 Pneumonia: Comparison to RT-PCR","authors":"Md Hafizur Rahman, Nashid Amir, Md. Anisur Rahman, Zakir Hossain Asm","doi":"10.11648/J.IJMI.20210904.12","DOIUrl":"https://doi.org/10.11648/J.IJMI.20210904.12","url":null,"abstract":"Background & purpose: This study was designed to evaluate the diagnostic performance of HRCT scan of chest in comparison to RT-PCR in the diagnosis of coronavirus disease 2019 (COVID-19). Materials & Methods: This study was conducted in the Department of Radiology & Imaging, Rajshahi Medical College Hospital, Rajshahi that included 150 patients over a period of eight months from April, 2020 to December, 2020. Using RT-PCR as the reference standard, the performance of HRCT scan of chest in the diagnosis of COVID-19 was assessed. In addition, the common HRCT findings, CT severity, demographic distribution of the disease were also analyzed. Results: The mean age of patients was 51.8±14.5 years, age range was from 24 to 82 years. There was a male predominance with 1.58:1. Cough (86.7%) &dyspnoea (74.7%) were the predominant clinical symptoms. Commonest CT features were GGO (97.1%) & GGO with consolidation (49.0%) followed by fibrosis (48%). Majority of the patients had all five lobes involved (51%) & CT severity showed majority with 25-50% involvement (28%) followed by 50-75% involvement in 22.3% patients. Specificity, sensitivity, positive predictive value, negative predictive value, accuracy & reliability were 97%, 43.7%, 93.5%, 63.6%, 91.3% & 0.88 respectively. Conclusion: HRCT chest has a very high sensitivity for diagnosis of COVID-19. HRCT chest should be considered as complementary to RT-PCR & a primary tool for detection of COVID-19 in this pandemic situation.","PeriodicalId":117142,"journal":{"name":"International Journal of Medical Imaging","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123464799","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}