Radiology Research and Practice最新文献

{"title":"Chest CT Scan Features to Predict COVID-19 Patients' Outcome and Survival","authors":"Mohammad-Mehdi Mehrabi Nejad, Aminreza Abkhoo, F. Salahshour, M. Salehi, M. Gity, Hamidreza Komaki, S. Kolahi","doi":"10.1155/2022/4732988","DOIUrl":"https://doi.org/10.1155/2022/4732988","url":null,"abstract":"Background Providing efficient care for infectious coronavirus disease 2019 (COVID-19) patients requires an accurate and accessible tool to medically optimize medical resource allocation to high-risk patients. Purpose To assess the predictive value of on-admission chest CT characteristics to estimate COVID-19 patients' outcome and survival time. Materials and Methods Using a case-control design, we included all laboratory-confirmed COVID-19 patients who were deceased, from June to September 2020, in a tertiary-referral-collegiate hospital and had on-admission chest CT as the case group. The patients who did not die and were equivalent in terms of demographics and other clinical features to cases were considered as the control (survivors) group. The equivalency evaluation was performed by a fellowship-trained radiologist and an expert radiologist. Pulmonary involvement (PI) was scored (0–25) using a semiquantitative scoring tool. The PI density index was calculated by dividing the total PI score by the number of involved lung lobes. All imaging parameters were compared between case and control group members. Survival time was recorded for the case group. All demographic, clinical, and imaging variables were included in the survival analyses. Results After evaluating 384 cases, a total of 186 patients (93 in each group) were admitted to the studied setting, consisting of 126 (67.7%) male patients with a mean age of 60.4 ± 13.6 years. The PI score and PI density index in the case vs. the control group were on average 8.9 ± 4.5 vs. 10.7 ± 4.4 (p value: 0.001) and 2.0 ± 0.7 vs. 2.6 ± 0.8 (p value: 0.01), respectively. Axial distribution (p value: 0.01), cardiomegaly (p value: 0.005), pleural effusion (p value: 0.001), and pericardial effusion (p value: 0.04) were mostly observed in deceased patients. Our survival analyses demonstrated that PI score ≥ 10 (p value: 0.02) and PI density index ≥ 2.2 (p value: 0.03) were significantly associated with a lower survival rate. Conclusion On-admission chest CT features, particularly PI score and PI density index, are potential great tools to predict the patient's clinical outcome.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"9 2 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83414626","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":"Differences in Cerebral Blood Flow in Gliomas on Magnetic Resonance Imaging Scanners with Magnetic Field Strengths of 1.5 and 3 T by the Method of Pseudo-Continuous Non-Contrast Perfusion","authors":"A. Sudarikova, A. Batalov, E. Pogosbekyan, L. Fadeeva, N. Zakharova, I. Pronin","doi":"10.52560/2713-0118-2022-1-30-44","DOIUrl":"https://doi.org/10.52560/2713-0118-2022-1-30-44","url":null,"abstract":"The aim of this work is to evaluate the universality of non-contrast MR perfusion (PCASL) in determining the rate of cerebral blood flow (CBF) of brain gliomas using magnetic resonance scanners with different magnetic field strengths. The maximum and normalized CBF values, which received on 1.5 and 3.0 T MRI in the same patients with histologically verified high grade gliomas (III, IV grade), were compared with each other. The data obtained by us are reliably comparable, which allows us to consider pCASL as a universal technique for scanners with different magnetic strengths.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"30 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83226077","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 Diagnostics of Complications of Kidney and Ureteral Injury in Different Periods of Traumatic Disease: a Clinical Case","authors":"Z. M. Magomedova, E. Egorova","doi":"10.52560/2713-0118-2022-2-75-83","DOIUrl":"https://doi.org/10.52560/2713-0118-2022-2-75-83","url":null,"abstract":"A clinical example is presented that demonstrates the capabilities of magnetic resonance imaging (MRI) in the diagnosis of kidney damage and their complications at different periods of traumatic disease. An optimized MRI protocol has been demonstrated, which allows for timely diagnosis of kidney damage and determines the treatment regimen.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"108 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80837267","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":"Can Prenatal Diagnosis of Total Anomalous Pulmonary Venous Return (TAPVR) Using Routine Fetal Ultrasound be Improved? A Case-Control Study.","authors":"Jack Heard,&nbsp;Reeni Soni,&nbsp;Katarina Nikel,&nbsp;Chelsea Day,&nbsp;Christy Pylypjuk","doi":"10.1155/2022/7141866","DOIUrl":"https://doi.org/10.1155/2022/7141866","url":null,"abstract":"<p><strong>Objectives: </strong>To determine the most common fetal ultrasound markers of total anomalous pulmonary venous return (TAPVR) during mid-trimester ultrasound using standardly obtained images and evaluate the performance of diagnostic algorithms for improving prenatal diagnosis.</p><p><strong>Methods: </strong>This was a matched case-control study at a regional referral centre (2005 to 2019). Cases of TAPVR were matched to controls 1 : 4 by date of birth and biologic sex. Postprocessing review of stored fetal ultrasound images was performed by two blinded and independent observers in a standardized fashion using nine sonographic markers: (i) left/right heart disproportion; (ii) abnormal distribution of great vessels; (iii) pulmonary vein entry into the left atrium (LA); (iv) confluence behind the LA; (v) abnormal coronary sinus; (vi) absence of the Coumadin ridge; (vii) aortic diameter; (viii) distance between LA and aorta; and (ix) post-LA space index >1.27. Descriptive and inferential statistics were used to present results and compare cases and controls. Diagnostic algorithms were compared by sensitivity/specificity.</p><p><strong>Results: </strong>21 cases of isolated TAPVR were matched to 84 controls (<i>n</i> = 105). The most common ultrasound marker of TAPVR was absence of pulmonary vein entry into the LA (42.9%), followed by abnormal Coumadin ridge (38.1%). Cases of TAPVR had significantly larger post-LA spaces than controls (<i>p</i> < 0.0001) and wider aortic diameters (<i>p</i>=0.006). A diagnostic algorithm stratifying on absence of pulmonary veins followed by an abnormal Coumadin ridge, can correctly identify cases of TAPVR with high specificity (90.5%) and moderate sensitivity (61.9%). Conversely, a diagnostic algorithm using the presence of any 3 abnormal markers had improved specificity (94.1%) but poorer sensitivity (23.8%).</p><p><strong>Conclusions: </strong>Using standardly obtained images from routine fetal ultrasound, improved prenatal detection of isolated TAPVR is possible. A standardized diagnostic approach can be highly specific for fetal TAPVR, however, algorithms that are sufficiently sensitive for screening in the general population are still needed.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"2022 ","pages":"7141866"},"PeriodicalIF":2.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9825205/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10865320","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 Superior Semicircular Canal Morphology and Its Relationship with Glenoid Fossa Roof Thickness Using Cone Beam Computed Tomography.","authors":"Bahare Davvaz,&nbsp;Mahvash Hasani,&nbsp;Abdolaziz Haghnegahdar","doi":"10.1155/2022/1565038","DOIUrl":"https://doi.org/10.1155/2022/1565038","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to evaluate the bone thickness of the superior semicircular canal (SSC) roof and its relationship with the roof thickness of the glenoid fossa (RGF).</p><p><strong>Methods: </strong>The cone beam computed tomography (CBCT) images of 280 patients (560 temporal regions) were surveyed. The lowest thickness of the SSC roof was measured and categorized based on the radiological patterns of the Cisneros et al. classification. The thickness of GF and the presence of dehiscence in this part were determined, as well. The relationship between the thickness of the GF roof and the bone thickness covering the SSC was also assessed.</p><p><strong>Results: </strong>The mean thickness of the SSC roof was 0.93 ± 0.48 mm, with no significant difference among different age groups and genders (<i>p</i> > 0.05). However, superior semicircular canal dehiscence (SSCD) was more prevalent among females over 45 years old. Similarly, the individuals with the dehiscence of the GF roof had a 12.93-fold higher chance of SSCD development.</p><p><strong>Conclusions: </strong>The results indicated that the thickness of the bone overlying the SSC was significantly related to the roof thickness of the GF. However, an increase in age resulted in no significant change in the bone thickness of the SSC roof. Gender also had no role in changing the thickness of the bone overlying the SSC. Considering the decrease in the thickness of the SSC roof among females over 45 years of age, menopause may be responsible for this occurrence as well as for the increase in the prevalence of SSCD.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"2022 ","pages":"1565038"},"PeriodicalIF":2.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9789904/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10447907","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":"Doppler Ultrasound and Computed Tomography Angiography Application in Planning of Lower Extremities Perforator Flaps for the Reconstruction of Acquired Maxillofacial Defects (Case Report)","authors":"A. Trefilov, E. Kryukov, V. Troyan, S. Tereshchuk, V. A. Suharev, I. A. Aseeva, E. V. Gaydukova","doi":"10.52560/2713-0118-2021-6-74-81","DOIUrl":"https://doi.org/10.52560/2713-0118-2021-6-74-81","url":null,"abstract":"The study describes a clinical case of preoperative planning of an anterolateral femur perforator flap and a peroneal autograft to eliminate a maxillofacial defect. During preparation for the surgery, an anatomical feature of the structure of both extremities circulatory system was found, which did not allow full use of the donor area tissues for subsequent surgical intervention. This feature was identified by Doppler ultrasound, but the final picture became clear only due to the study by computed tomography angiography.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"14 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90382892","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":"Lemierre’s syndrome in a child. Literature review and own observations","authors":"E. B. Olkhova, N. Sholokhova, T. V. Mukaseeva, V. O. Soboleva, N. A. Chegodaeva, N. A. Savitskaya","doi":"10.52560/60/2713-0118-2022-2-33-47","DOIUrl":"https://doi.org/10.52560/60/2713-0118-2022-2-33-47","url":null,"abstract":"Lemierre syndrome is extremely rare and poorly known to medical practitioners. In  childhood, this is completely casuistry, described almost exclusively in adolescents. The  key component of the syndrome is jugular vein thrombosis and sinus thrombosis, which develop against the background of polysinusitis and  purulent  otitis  and  are also  accompanied by  the  addition  of  pneumonia, meningitis  and  sepsis. Typically,  Lemierre’s syndrome is considered otogenic or sinusogenic sepsis. The nonspecificity of clinical manifestations against the background of the patient’s severe general condition determines the need for quick and accurate diagnosis, and ultrasound takes the first place in a series of radiation research methods, which allows differentiating jugular vein thrombosis. When the latter is found, MRI and CT are usually performed, in which  the presence of sinus thrombosis, inflammatory changes in the paranasal sinuses, pneumonia, etc. are usually confirmed. Further clinical and laboratory examination is designed to assess the presence of meningitis and a violation of the blood coagulation system. This publication provides 3 atypical observations of Lemierre’s syndrome in children: in the first case, it was thrombosis of the jugular vein that was first detected in an adolescent, and only then all other components of the syndrome; in the second case, the child was only 3 years old, which is completely atypical for this pathology, the third patient was 1 month old, and the diagnosis of Lemierre syndrome was made retrospectively. All children underwent a complex radiation examination, operated on, received massive syndrome therapy and were discharged home with recovery. The publication is extensively illustrated and contains a brief overview of the literature.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"17 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2021-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75270412","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":"Comparative Study of Multiple High-Signal-Intensity Spots on 3D and 2D Magnetic Resonance Sialography for Patients with Sjögren's Syndrome.","authors":"Yusuke Shimada,&nbsp;Ikuho Kojima,&nbsp;Masahiro Iikubo","doi":"10.1155/2021/5846637","DOIUrl":"https://doi.org/10.1155/2021/5846637","url":null,"abstract":"<p><p>We investigated the sensitivities of 2-dimensional (2D) magnetic resonance sialography (MR-S) and unilateral sagittal and axial 3-dimensional (3D) MR-S using a surface coil and their combination in diagnosing patients with Sjögren's syndrome (SS). We retrospectively analyzed the 3D and 2D MR-S results of 78 patients with SS. We evaluated the sensitivities of multiple high-signal-intensity spots and staging on MR sialograms and analyzed the efficient imaging methods and cross section for diagnosing patients with SS. The sensitivities of MR-S for detecting abnormal findings (i.e., MR-S stage 1 or higher) were as follows: 65 cases (83.3% [95% confidence interval (CI): 73.2-90.8]) for unilateral sagittal 3D MR-S; 62 cases (79.4% [95% CI: 68.8-87.8]) for axial 3D MR-S; 66 cases (84.6% [95% CI: 74.7-91.8]) for combined unilateral sagittal and axial 3D MR-S; and 32 cases (41.0% [95% CI: 30.0-52.7]) for bilateral sagittal 2D MR-S. The ratio of the abnormal finding of MR-S was tested using the two-tailed Fisher's exact test. Unilateral sagittal, axial, and combined unilateral sagittal and axial 3D MR-S showed significantly higher sensitivity than bilateral sagittal 2D MR-S, respectively (<i>P</i> < 0.001). Most cases upstaged by 3D MR-S were those positive (stage 1 or higher) among the stage 0 cases detected by 2D MR-S. Axial 3D MR-S, compared with 2D MR-S, understaged four cases, which was due to the imaging range of the axial 3D MR-S. We concluded that a single unilateral sagittal 3D MR-S was sufficient and axial 3D MR-S was unnecessary for SS staging. T1- and T2-weighted images are essential for investigating the salivary glands in patients with SS. Therefore, we also concluded that bilateral sagittal 3D MR-S of the parotid glands in addition to T1- and T2-weighted imaging is necessary, sufficient, and most efficient for precise MR imaging examination of the salivary glands, including diagnosing SS.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"2021 ","pages":"5846637"},"PeriodicalIF":2.7,"publicationDate":"2021-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8720609/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39877508","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":"Automatic Algorithm of Magnetic Resonance Morphometry in the Diagnosis of Focal Cortical Dysplasia","authors":"A. Shevchenko, E. Pogosbekyan, A. Batalov, E. Shultz, A. Tyurina, L. Fadeeva, M. V. Shevchenko, P. Vlasov, N. Zakharova, A. Melikyan, I. Pronin","doi":"10.52560/2713-0118-2022-1-63-76","DOIUrl":"https://doi.org/10.52560/2713-0118-2022-1-63-76","url":null,"abstract":"The purpose of the study — to create an original algorithm of MR-morphometry for identifying FCD zones. Based on the use of the ANTs and FSL programs, an algorithm for MR morphometry was developed. It was used to generate maps of the z-index of the blur of the transition of gray and white matter and the thickness of the crust (Junction and thickness maps).An algorithm for automatic detection of focal cortical dysplasia zones has been developed. The MRI morphometry method is a promising technique for additional assessment of pathological changes in focal cortical dysplasia.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"76 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2021-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76894788","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":"A Review of Doses for Dental Imaging in 2010-2020 and Development of a Web Dose Calculator.","authors":"Hawon Lee,&nbsp;Andreu Badal","doi":"10.1155/2021/6924314","DOIUrl":"10.1155/2021/6924314","url":null,"abstract":"Dental imaging is one of the most common types of diagnostic radiological procedures in modern medicine. We introduce a comprehensive table of organ doses received by patients in dental imaging procedures extracted from literature and a new web application to visualize the summarized dose information. We analyzed articles, published after 2010, from PubMed on organ and effective doses delivered by dental imaging procedures, including intraoral radiography, panoramic radiography, and cone-beam computed tomography (CBCT), and summarized doses by dosimetry method, machine model, patient age, and technical parameters. Mean effective doses delivered by intraoral, 1.32 (0.60–2.56) μSv, and panoramic, 17.93 (3.47–75.00) μSv, procedures were found to be about1% and 15% of that delivered by CBCT, 121.09 (17.10–392.20) μSv, respectively. In CBCT imaging, child phantoms received about 29% more effective dose than the adult phantoms received. The effective dose of a large field of view (FOV) (>150 cm2) was about 1.6 times greater than that of a small FOV (<50 cm2). The maximum CBCT effective dose with a large FOV for children, 392.2 μSv, was about 13% of theeffective dose that a person receives on average every year from natural radiation, 3110 μSv. Monte Carlo simulations of representative cases of the three dental imaging procedures were then conducted to estimate and visualize the dose distribution within the head. The user-friendly interactive web application (available at http://dentaldose.org) receives user input, such as the number of intraoral radiographs taken, and displays total organ and effective doses, dose distribution maps, and a comparison with other medical and natural sources of radiation. The web dose calculator provides a practical resource for patients interested in understanding the radiation doses delivered by dental imaging procedures.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"2021 ","pages":"6924314"},"PeriodicalIF":2.7,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8767401/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39852257","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}