Dento maxillo facial radiology最新文献

{"title":"Assessment of landmark detection in cephalometric radiographs with different conditions of brightness and contrast using the an artificial intelligence software.","authors":"Liciane Dos Santos Menezes, Thaísa Pinheiro Silva, Marcos Antônio Lima Dos Santos, Mariana Mendonça Hughes, Saulo Dos Reis Mariano Souza, Patrícia Miranda Leite Ribeiro, Paulo Henrique Luiz de Freitas, Wilton Mitsunari Takeshita","doi":"10.1259/dmfr.20230065","DOIUrl":"10.1259/dmfr.20230065","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate the reliability and reproducibility of an artificial intelligence (AI) software in identifying cephalometric points on lateral cephalometric radiographs considering four settings of brightness and contrast.</p><p><strong>Methods and materials: </strong>Brightness and contrast of 30 lateral cephalometric radiographs were adjusted into four different settings. Then, the control examiner (ECont), the calibrated examiner (ECal), and the CEFBOT AI software (AIs) each marked 19 cephalometric points on all radiographs. Reliability was assessed with a second analysis of the radiographs 15 days after the first one. Statistical significance was set at <i>p</i> < 0.05.</p><p><strong>Results: </strong>Reliability of landmark identification was excellent for the human examiners and the AIs regardless of the type of brightness and contrast setting (mean intraclass correlation coefficient >0.89). When ECont and ECal were compared for reproducibility, there were more cephalometric points with significant differences on the x-axis of the image with the highest contrast and the lowest brightness, namely N(<i>p</i> = 0.033), S(<i>p</i> = 0.030), Po(<i>p</i> < 0.001), and Pog'(<i>p</i> = 0.012). Between ECont and AIs, there were more cephalometric points with significant differences on the image with the highest contrast and the lowest brightness, namely N(<i>p</i> = 0.034), Or(<i>p</i> = 0.048), Po(<i>p</i> < 0.001), A(<i>p</i> = 0.042), Pog'(<i>p</i> = 0.004), Ll(<i>p</i> = 0.005), Ul(<i>p</i> < 0.001), and Sn(<i>p</i> = 0.001).</p><p><strong>Conclusions: </strong>While the reliability of the AIs for cephalometric landmark identification was rated as excellent, low brightness and high contrast seemed to affect its reproducibility. The experienced human examiner, on the other hand, did not show such faulty reproducibility; therefore, the AIs used in this study is an excellent auxiliary tool for cephalometric analysis, but still depends on human supervision to be clinically reliable.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10968755/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49689241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantitative assessment of condylar bone resorption using fused CBCT images: differentiating and diagnosing three distinct groups based on volume and thickness decrease.","authors":"Ji-Ling Feng, Ruo-Han Ma, Li-Li Sun, Jun-Ru Zhao, Yan-Ping Zhao, Gang Li","doi":"10.1259/dmfr.20230337","DOIUrl":"10.1259/dmfr.20230337","url":null,"abstract":"<p><strong>Objectives: </strong>To investigate the accuracy of fused CBCT images in diagnosing three distinct groups of bone changes characterized by volume and thickness decrease in patients with temporomandibular joint osteoarthrosis (TMJ OA) during follow-up.</p><p><strong>Methods: </strong>In this retrospective study, 109 patients (176 TMJs) with TMJ OA were included. Two consecutive CBCT images for the same patient were registered and fused. Then, three image sets were established: without fusion, fused 2D image, and fused 3D image. Three residents randomly and independently evaluated whether there was condylar resorption with the three image sets respectively. The samples diagnosed as condylar resorption by the expert panel were divided into three subgroups according to the volume and thickness decrease calculated after segmentation. The inter- and intraobserver agreement, receiver operating characteristic (ROC), and area under the curve (AUC) evaluated the diagnostic capability for different subgroups.</p><p><strong>Results: </strong>For the volume decrease more than 50 mm³ and thickness decrease more than 1 mm groups, the AUC values for fused image sets were higher than those without fusion (<i>p</i> < 0.01). For the volume decrease within 50 mm³ and thickness decrease within 1 mm groups, the AUC values for fused 2D image sets were higher than the image sets without fusion (<i>p</i> < 0.05), but there was no significant difference between the fused 3D image sets and the image sets without fusion (<i>p</i> = 0.48 for volume decrease, <i>p</i> = 0.37 for thickness decrease).</p><p><strong>Conclusions: </strong>The fused images can improve the diagnostic accuracy and repeatability for the samples with at least 50 mm³ volume decrease or 1 mm thickness decrease compared with the image groups without fusion.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10968762/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49689264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic resonance imaging in the diagnosis of periodontal and periapical disease.","authors":"Katrine Mølgaard Johannsen, João Marcus de Carvalho E Silva Fuglsig, Louise Hauge Matzen, Jennifer Christensen, Rubens Spin-Neto","doi":"10.1259/dmfr.20230184","DOIUrl":"10.1259/dmfr.20230184","url":null,"abstract":"<p><strong>Objectives: </strong>Early pre-clinical inflammatory changes in periodontal and/or periapical lesions, which typically precede bone loss, are challenging to diagnose using ionizing-radiation-based imaging modalities. MRI provides relevant additional diagnostic information of inflammatory processes in soft and hard tissues. The aim of the present study is to undertake a systematic review of the literature on MRI in the diagnosis of periodontal and/or periapical disease.</p><p><strong>Methods and materials: </strong>The PubMed/MEDLINE and Scopus bibliographic databases were searched (2000-2021) using the search string: (\"MRI\" or \"magnetic resonance imaging\") and (\"periodontitis\" or \"periodontal\" or \"apical pathology\" or \"endodontic pathology\" or \"periapical\" or \"furcation\" or \"intrabony\"). The search was limited to studies published in English. The studies were assessed independently by three reviewers, focusing on the MRI sequences, imaging modalities (radiographs, cone beam CT (CBCT), and MRI), disease definition, assessed parameters, and outcome measurements.</p><p><strong>Results: </strong>The search strategy yielded 34 studies, from which 13 were included. Overall, the findings of MRI were in agreement with CBCT. The studies showed that MRI provided diagnostic information of the hard and soft tissue components affected by periodontal and/or periapical disease with a fairly high sensitivity and specificity. However, the assessed parameters (<i>e.g.</i> MRI acquisition protocols, and disease definition) differed substantially.</p><p><strong>Conclusions: </strong>The included studies indicate that the use of MRI in the diagnosis of periodontal and/or periapical disease is feasible and promising. More studies are needed to define the accuracy of this non-ionizing-radiation-based diagnostic modality, in the assessment of periodontal and/or periapical lesions.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10552134/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10517360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Creation of Dimicleft radiological cleft phantom skulls using reversed virtual planning technique.","authors":"Laura Pálvölgyi, Artúr Kesztyűs, Sohaib Shujaat, Reinhilde Jacobs, Krisztián Nagy","doi":"10.1259/dmfr.20230121","DOIUrl":"10.1259/dmfr.20230121","url":null,"abstract":"<p><strong>Objectives: </strong>The aim of this technical report was to develop customized pediatric phantoms for cone-beam computed tomography (CBCT)-related research in cleft patients.</p><p><strong>Methods: </strong>Six human pediatric skulls (age: 5-10 years) were recruited. A cone-beam computed tomography (CBCT) scan was taken for each skull, followed by virtual modeling through the process of segmentation. An artificial cleft was designed and printed to be applied onto the skull for the creation of an artificial cleft. The skulls were covered with non-radiopaque tape and immersed in melted Mix-D soft tissue equivalent material. The resulting phantoms covered with Mix-D were assessed radiologically by two expert radiologists. These phantoms were referred to as Dimicleft pediatric skull phantoms.</p><p><strong>Results: </strong>Dimicleft phantoms were able to appropriately mimic <i>in vivo</i> circumstances. No gaps existed between Mix-D and bony tissue. Virtual planning allowed the optimal designing of an artificial cleft onto the phantom. The artificially created cleft was suitable to determine the size, location, and extent of the cleft.</p><p><strong>Conclusions: </strong>Dimicleft phantoms could act as a viable alternative to other commercially available options for assessing image quality and optimizing CBCT protocols in cleft patients for diagnostics and three-dimensional treatment planning.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10552124/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10091979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prognostic significance of the harmonized maximum standardized uptake value of 18F-FDG-PET/CT in patients with resectable oral tongue squamous cell carcinoma: a multicenter study.","authors":"Hayato Kaida, Kazuhiro Kitajima, Tetsuro Sekine, Kimiteru Ito, Hiromitsu Daisaki, Takayuki Kimura, Mitsuo P Sato, Akifumi Enomoto, Naoki Otsuki, Kazunari Ishii","doi":"10.1259/dmfr.20230083","DOIUrl":"10.1259/dmfr.20230083","url":null,"abstract":"<p><strong>Objectives: </strong>To investigate the usefulness of harmonized ¹⁸F-FDG-PET/CT parameters for predicting the postoperative recurrence and prognosis of oral tongue squamous cell carcinoma (OTSCC).</p><p><strong>Methods: </strong>We retrospectively analyzed the cases of 107 OTSCC patients who underwent surgical resection at four institutions in Japan in 2010-2016 and evaluated the harmonized PET parameters of the maximum standardized uptake value (SUVmax), metabolic tumor volume (MTV), and total lesion glycolysis (TLG) for the primary tumor as the pSUVmax, pMTV, and pTLG. For lymph node metastasis, we used harmonized PET parameters of nodal-SUVmax, nodal-total MTV (tMTV), and nodal-total TLG (tTLG). The associations between the harmonized PET parameters and the patients' relapse-free survival (RFS) and overall survival (OS) were evaluated by the Kaplan-Meier method and Cox proportional hazard regression analysis for model 1 (preoperative stage) and model 2 (preoperative  +  postoperative stages).</p><p><strong>Results: </strong>The harmonized SUVmax values were significantly lower than those before harmonization (p=0.012). The pSUVmax was revealed as a significant preoperative risk factor for RFS and OS. Nodal-SUVmax, nodal-tMTV, and nodal-tTLG were significant preoperative risk factors for OS. The combination of pSUVmax + nodal-SUVmax significantly stratified the patients into a low-risk group (pSUVmax <3.97 + nodal-SUVmax <2.85 or ≥2.85) and a high-risk group (pSUVmax ≥3.97 + nodal-SUVmax <2.85 or pSUVmax ≥3.97 + nodal-SUVmax ≥2.85) for recurrence and prognosis (RFS: p=0.001; OS: p<0.001).</p><p><strong>Conclusions: </strong>The harmonized pSUVmax is a significant prognostic factor for the survival of OTSCC patients. The combination of pSUVmax and nodal-SUVmax identified OTSCC patients at high risk for recurrence and poor prognosis at the preoperative stage.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10552130/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10142806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A nomogram incorporating clinical, conventional ultrasound and shear wave elastography findings for distinguishing pleomorphic adenoma from Warthin's tumor of the major salivary glands.","authors":"Huan-Zhong Su, Jia-Jia Yang, Zhi-Yong Li, Long-Cheng Hong, Wen-Jin Lin, Cong Chen, Jie Guo, Zhen-Yan Fang, En-Sheng Xue","doi":"10.1259/dmfr.20230051","DOIUrl":"10.1259/dmfr.20230051","url":null,"abstract":"<p><strong>Objective: </strong>Pre-operative differentiation between pleomorphic adenoma (PA) and Warthin's tumor (WT) of the major salivary glands is crucial for treatment decisions. The purpose of this study was to develop and validate a nomogram incorporating clinical, conventional ultrasound (CUS) and shear wave elastography (SWE) features to differentiate PA from WT.</p><p><strong>Methods: </strong>A total of 113 patients with histological diagnosis of PA or WT of the major salivary glands treated at Fujian Medical University Union Hospital were enrolled in training cohort (<i>n</i> = 75; PA = 41, WT = 34) and validation cohort (<i>n</i> = 38; PA = 22, WT = 16). The least absolute shrinkage and selection operator (LASSO) regression algorithm was used for screening the most optimal clinical, CUS, and SWE features. Different models, including the nomogram model, clinic-CUS (Clin+CUS) and SWE model, were built using logistic regression. The performance levels of the models were evaluated and validated on the training and validation cohorts, and then compared among the three models.</p><p><strong>Results: </strong>The nomogram incorporating the clinical, CUS and SWE features showed favorable predictive value for differentiating PA from WT, with the area under the curves (AUCs) of 0.947 and 0.903 for the training cohort and validation cohort, respectively. Decision curve analysis showed that the nomogram model outperformed the Clin+CUS model and SWE model in terms of clinical usefulness.</p><p><strong>Conclusions: </strong>The nomogram had good performance in distinguishing major salivary PA from WT and held potential for optimizing the clinical decision-making process.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10552128/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9743018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Age estimation based on 3D pulp segmentation of first molars from CBCT images using U-Net.","authors":"Yangjing Song, Huifang Yang, Zhipu Ge, Han Du, Gang Li","doi":"10.1259/dmfr.20230177","DOIUrl":"10.1259/dmfr.20230177","url":null,"abstract":"<p><strong>Objective: </strong>To train a U-Net model to segment the intact pulp cavity of first molars and establish a reliable mathematical model for age estimation.</p><p><strong>Methods: </strong>We trained a U-Net model by 20 sets of cone-beam CT images and this model was able to segment the intact pulp cavity of first molars. Utilizing this model, 239 maxillary first molars and 234 mandibular first molars from 142 males and 135 females aged 15-69 years old were segmented and the intact pulp cavity volumes were calculated, followed by logarithmic regression analysis to establish the mathematical model with age as the dependent variable and pulp cavity volume as the independent variable. Another 256 first molars were collected to estimate ages with the established model. Mean absolute error and root mean square error between the actual and the estimated ages were used to assess the precision and accuracy of the model.</p><p><strong>Results: </strong>The dice similarity coefficient of the U-Net model was 95.6%. The established age estimation model was [Formula: see text] (<i>V</i> is the intact pulp cavity volume of the first molars). The coefficient of determination (R²), mean absolute error and root mean square error were 0.662, 6.72 years, and 8.26 years, respectively.</p><p><strong>Conclusion: </strong>The trained U-Net model can accurately segment pulp cavity of the first molars from three-dimensional cone-beam CT images. The segmented pulp cavity volumes could be used to estimate the human ages with reasonable precision and accuracy.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10552131/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9767071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Applications of artificial intelligence in the analysis of dental panoramic radiographs: an overview of systematic reviews.","authors":"Natalia Turosz, Kamila Chęcińska, Maciej Chęciński, Anita Brzozowska, Zuzanna Nowak, Maciej Sikora","doi":"10.1259/dmfr.20230284","DOIUrl":"10.1259/dmfr.20230284","url":null,"abstract":"<p><strong>Objectives: </strong>This overview of systematic reviews aimed to establish the current state of knowledge on the suitability of artificial intelligence (AI) in dental panoramic radiograph analysis and illustrate its changes over time.</p><p><strong>Methods: </strong>Medical databases covered by the Association for Computing Machinery, Bielefeld Academic Search Engine, Google Scholar, and PubMed engines were searched. The risk of bias was assessed using ROBIS tool. Ultimately, 12 articles were qualified for the qualitative synthesis. The results were visualized with timelines, tables, and charts.</p><p><strong>Results: </strong>In the years 1988-2023, a significant development of information technologies for the analysis of DPRs was observed. The latest analyzed AI models achieve high accuracy in detecting caries (91.5%), osteoporosis (89.29%), maxillary sinusitis (87.5%), periodontal bone loss (93.09%), and teeth identification and numbering (93.67%). The detection of periapical lesions is also characterized by high sensitivity (99.95%) and specificity (92%). However, due to the small number of heterogeneous source studies synthesized in systematic reviews, the results of this overview should be interpreted with caution.</p><p><strong>Conclusion: </strong>Currently, AI applications can significantly support dentists in dental panoramic radiograph analysis. As systematic reviews on AI become outdated quickly, their regular updating is recommended. PROSPERO registration number: CRD42023416048.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10552133/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10147869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Does cone beam CT change the treatment decision for maxillary second and third molars? A prospective study.","authors":"Louise Hermann, Sven Erik Nørholt, Ann Wenzel, Pankaj Taneja, Louise Hauge Matzen","doi":"10.1259/dmfr.20230128","DOIUrl":"10.1259/dmfr.20230128","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate whether information from CBCT changes the treatment plan for maxillary second and third molars and to examine clinical and radiographic parameters with an impact on treatment decision.</p><p><strong>Methods: </strong>This prospective study included 260 maxillary third molars with superimposition onto the second molar in panoramic images (170 patients; mean age 28 years, range 16-63). An initial treatment plan was based on clinical findings and panoramic images. After CBCT, a final treatment plan was decided. Treatment was undertaken based on the final treatment plan. Through logistic regression analyses, impact of clinical and radiographic parameters on change in treatment plan, removal of the third molar <i>vs</i> no treatment, and removal of the second <i>vs</i> third molar were evaluated.</p><p><strong>Results: </strong>The treatment plan changed in 82 cases (32%). Sixteen cases (6%) changed from removal of the third molar to removal of the second molar. Regression analyses showed that severe resorption in the second molar was significantly related to a change in treatment plan. Removal of a third molar was decided in 180 cases and regression analyses identified that mesioangulation of the third molar, marginal bone loss, superficial resorption, and age were significantly related to removal of the third molar <i>vs</i> no treatment. Thirty second molars were removed, and regression analyses showed that severe resorption was significantly related to removal of the second molar instead of the third molar.</p><p><strong>Conclusions: </strong>Parameters such as resorption evaluated in CBCT can modify the treatment decision, resulting in removal of the second and/or the third molar.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10552123/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10498703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ambient light exposure of photostimulable phosphor plates: is there a safe limit for acceptable image quality?","authors":"Matheus Sampaio-Oliveira, Luiz Eduardo Marinho-Vieira, Francisco Haiter-Neto, Deborah Q Freitas, Matheus L Oliveira","doi":"10.1259/dmfr.20230174","DOIUrl":"10.1259/dmfr.20230174","url":null,"abstract":"<p><strong>Objectives: </strong>To subjectively assess radiographs obtained with photostimulable phosphor (PSP) plates exposed to clinical levels of ambient light prior to read-out to potentially set a safe limit for acceptable image quality.</p><p><strong>Methods and materials: </strong>Six dental regions of a dry human skull were X-rayed using PSP plates from VistaScan and Express under four exposure times: 0.1, 0.2, 0.32, and 0.4 s. Before read-out, the PSP plates were exposed to ambient light for 0, 5, 10, 30, 60, and 90 s. Six observers were asked to classify the 288 resulting radiographs as acceptable or unacceptable based on the identification of anatomical structures and global image quality. The number of answers classifying radiographs as unacceptable was used to calculate a rejection rate; a pairwise comparison for better image quality was further conducted among radiographs considered acceptable. Reproducibility was tested by having 25% of all experimental groups reassessed.</p><p><strong>Results: </strong>Intra- and interobserver agreement ranged from 0.87 to 1.00 and from 0.81 to 0.92, respectively. Exposure of PSP plates to ambient light increased rejection rates mostly as of 10 s. In the pairwise comparison, subtle differences were observed between radiographs obtained with PSP plates not exposed and those exposed to ambient light for 5 s.</p><p><strong>Conclusions: </strong>Ambient light exposure of PSP plates impairs the image quality of radiographs. A safe limit of ambient light exposure of 5 s for VistaScan and Express should be considered. Ambient light exposure of PSP plates within safe limits can avoid retakes and reduce unnecessary patient exposure to X-rays.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":null,"pages":null},"PeriodicalIF":2.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10552132/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10142805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}