Radiology Research and Practice最新文献

{"title":"Oral Cancer Screening by Artificial Intelligence-Oriented Interpretation of Optical Coherence Tomography Images","authors":"K. Ramezani, M. Tofangchiha","doi":"10.1155/2022/1614838","DOIUrl":"https://doi.org/10.1155/2022/1614838","url":null,"abstract":"Early diagnosis of oral cancer is critical to improve the survival rate of patients. The current strategies for screening of patients for oral premalignant and malignant lesions unfortunately miss a significant number of involved patients. Optical coherence tomography (OCT) is an optical imaging modality that has been widely investigated in the field of oncology for identification of cancerous entities. Since the interpretation of OCT images requires professional training and OCT images contain information that cannot be inferred visually, artificial intelligence (AI) with trained algorithms has the ability to quantify visually undetectable variations, thus overcoming the barriers that have postponed the involvement of OCT in the process of screening of oral neoplastic lesions. This literature review aimed to highlight the features of precancerous and cancerous oral lesions on OCT images and specify how AI can assist in screening and diagnosis of such pathologies.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"1 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90208585","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":"Optimization of Image Quality and Organ Absorbed Dose for Pediatric Chest X-Ray Examination: In-House Developed Chest Phantom Study","authors":"T. Pengpan, N. Rattanarungruangchai, Juthathip Dechjaithat, Phawinee Panthim, Puntarika Siricharuwong, Ausanai Prapan","doi":"10.1155/2022/3482458","DOIUrl":"https://doi.org/10.1155/2022/3482458","url":null,"abstract":"Purpose This study aimed to identify proper exposure techniques to maintain optimal diagnostic image quality with minimum radiation dose for anteroposterior chest X-ray projection in pediatric patients. Methods Briefly, an in-house developed pediatric chest phantom was constructed. Next, nanodot OSLDs were used for organ absorbed dose measurement and placed in the lung area, and the phantom was exposed to various exposure techniques (ranging from 50 to 70 kVp with 1.6, 2, and 2.5 mAs). After that, the phantom was used to assess image quality parameters, including SNR and CNR. Two radiologists assessed the subjective image quality using a visual grading analysis (VGA) technique. Finally, the figure of merit (FOM) was analyzed. Results The developed phantom was constructed successfully and could be useful for dose measurement and image quality assessment. The absorbed dose varied from 0.009 to 0.031 mGy for the range of exposure techniques used. SNR and CNR showed a gradually increasing trend, while kVp and mAs values were increased. The highest kVp (70 kVp) produced the highest SNR and CNR, exhibiting a significant difference compared with 50 and 60 kVp (P < 0.05). The overall VGA score was 3.2 ± 0.3, and the low kVp technique demonstrated better image quality compared with the reference image. Conclusion The optimized exposure technique was identified as 60 kV and 2.5 mAs, indicating the highest FOM score. This work revealed practicable techniques that could be implemented into clinical practice for performing pediatric chest radiography.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"13 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90235570","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":"Intussusception in a Newborn. Clinical Observation","authors":"E. B. Olkhova, T. V. Mukaseeva, V. Soboleva, A. S. Kirsanov, I. S. Аllakhverdiev","doi":"10.52560/60/2713-0118-2022-2-65-74","DOIUrl":"https://doi.org/10.52560/60/2713-0118-2022-2-65-74","url":null,"abstract":"Intestinal intussusception in a newborn is a casuistic rarity, the clinical symptoms of which are nonspecific, and patients are regarded for a relatively long time as patients with necrotic enterocolitis. There are no unambiguous radiological signs of this  pathology,  especially with  atypical  variants of intussusception, when even pneumoirrigography is uninformative. In the vast majority of cases, the diagnosis is made only intra-operatively, when the development of intestinal obstruction or perforated peritonitis determines the need for surgical intervention. The publication presents a unique observation of preoperative echographic diagnosis and successful cure of prolonged small-intestinal invagination in a premature newborn 2 days of life, the cause of which was Meckel’s diverticulum.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"198 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72756060","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 influence of clinical information on the interpretation of digital chest radiographs","authors":"A. Vasil’ev, V. Nechaev","doi":"10.52560/2713-0118-2022-3-67-73","DOIUrl":"https://doi.org/10.52560/2713-0118-2022-3-67-73","url":null,"abstract":"In this study, the impact of the availability and accuracy of the patient’s clinical, laboratory and anamnestic data on the conclusion of a radiologist was evaluated. To achieve this goal, three groups of protocols of 60 digital chest radiographs performed by five radiologists with different work experience were compared. At the first stage, a set of radiographs was provided without additional information, at the second stage — with reliable brief clinical, laboratory and anamnestic data and at the third stage - with unreliable data. As a result, it was shown that the availability of reliable and accurate clinical information is important for the interpretation of chest radiographs.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"32 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75576748","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":"Determining the Effect of the Picture Archiving and Communication System (PACS) on Different Dimensions of Users' Work","authors":"M. Montazeri, Reza Khajouei","doi":"10.1155/2022/4306714","DOIUrl":"https://doi.org/10.1155/2022/4306714","url":null,"abstract":"The impact of the picture archiving and communication system (PACS) on healthcare costs, information access, image quality, and user workflow has been well studied. However, there is insufficient evidence on the effect of this system on different dimensions of the users' work. The objective of this study was to evaluate the impact of the PACS on different dimensions of users' work (external communication, service quality, user intention to use the PACS, daily routine, and complaints on users) and to compare the opinions of different groups of users about the PACS. This study was performed on the PACS users (n = 72) at Kerman University of Medical Sciences, including radiologists, radiology staff, ward heads, and physicians. Data were collected using a questionnaire consisting of two parts: demographic information of the participants and 5-point Likert scale questions concerning the five dimensions of users' work. Data were analyzed using descriptive statistics, ANOVA, and Pearson's correlation coefficient statistical tests. The mean of scores given by the PACS users was 4.31 ± 0.86 for external communication, 4.18 ± 0.96 for user intention to use the PACS, 3.91 ± 0.7 for service quality, 3.16 ± 0.56 for daily routine, and 3.08 ± 1.05 for complaints on users. Radiologists and radiology staff had a more positive opinion about the PACS than other clinicians such as physicians (P < 0.01, CI = 95%). Factors such as user age (P < 0.01, CI = 95%), job (P < 0.001, CI = 95%), work experience (P < 0.001, CI = 95%), and PACS training method (P=0.037, CI = 95%) were related to the impact of the PACS on different dimensions of users' work. This study showed that the PACS has a positive effect on different dimensions of users' work, especially on external communication, user intention to use the system, and service quality. It is recommended to implement PACSs in medical centers to support users' work and to maintain and strengthen the capabilities and functions of radiology departments.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":"2022 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88039167","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":"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":"Imaging Review of Subscapularis Tendon and Rotator Interval Pathology.","authors":"Zohaib Y Ahmad,&nbsp;Luis E Diaz,&nbsp;Frank W Roemer,&nbsp;Ajay Goud,&nbsp;Ali Guermazi","doi":"10.1155/2022/4009829","DOIUrl":"https://doi.org/10.1155/2022/4009829","url":null,"abstract":"<p><p>As the largest rotator cuff muscle, the subscapularis plays a major role in stabilizing the glenohumeral joint, in conjunction with surrounding rotator cuff structures. Injury to the subscapularis tendon can be isolated, but more commonly is seen in conjunction with supraspinatus tendon pathology. Injury can be associated with biceps pulley instability, superior labral anterior-posterior (SLAP) tears, humeral head subluxation, and anterosuperior and coracoid impingements. The involvement of the rotator interval can lead to what is called \"the hidden lesion,\" due to its difficulty to diagnose during arthroscopy. Understanding the anatomical relations of the subscapularis tendon with the rest of the rotator cuff and rotator interval, as well as common patterns of injury that involve the subscapularis tendon, can aid in proper diagnosis of these injuries leading to prompt surgical repair. This review describes the anatomy of the subscapularis muscle and tendon, and the magnetic resonance imaging (MRI) patterns of subscapularis tendon injury.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":" ","pages":"4009829"},"PeriodicalIF":2.7,"publicationDate":"2022-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8767392/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39852258","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":"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}