Dento maxillo facial radiology最新文献

{"title":"Zirconia implants interfere with the evaluation of peri-implant bone defects in cone beam computed tomography (CBCT) images even with artifact reduction, a pilot study.","authors":"Niina Kuusisto, Faleh Abushahba, Stina Syrjänen, Sisko Huumonen, Pekka Vallittu, Timo Närhi","doi":"10.1259/dmfr.20230252","DOIUrl":"10.1259/dmfr.20230252","url":null,"abstract":"<p><strong>Objectives: </strong>Three-dimensional cone beam computed tomography (CBCT) imaging can be considered, especially in patients with complicated peri-implantitis (PI). Artifacts induced by dense materials are the drawback of CBCT imaging and the peri-implant bone condition may not be assessed reliably because the artifacts are present in the same area. This pilot study investigates the performance of the artifact reduction algorithm (ARA) of the Planmeca Viso G7 CBCT device (Planmeca, Helsinki, Finland) with three different implant materials and imaging parameters.</p><p><strong>Methods: </strong>Three pairs of dental implants consisting of titanium, zirconia, and fiber reinforced composite (FRC) were set into a pig mandible. A vertical defect simulating peri-implantitis bone loss was made on the buccal side of one of each implant. The defect was identified and measured by two observers and compared to the actual dimensions. In addition, the bone structure and the marginal cortex visibility between the implants were estimated visually.</p><p><strong>Results: </strong>The bone defect and its dimensions with the zirconia implant could not be identified in any image with or without the metal artifact reduction algorithm. The bone defect of titanium and FRC implants were identified with all three imaging parameters or even without ARA. The interobserver agreement between the two observers was almost perfect for all categories analyzed.</p><p><strong>Conclusion: </strong>Peri-implantitis defect of the zirconia implant and the peri-implant bone structure of the zirconia implants cannot be recognized reliably with any ARA levels, or any imaging parameters used with the Planmeca Viso G7. The need for ARA when imaging the peri-implant bone condition of the titanium and FRC implants may be unnecessary.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":" ","pages":"20230252"},"PeriodicalIF":2.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10968758/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10498710","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":"Correction to the effect of imaging modality on the evaluation of the outcome of endodontic surgery.","authors":"","doi":"10.1259/dmfr.20220164.c","DOIUrl":"10.1259/dmfr.20220164.c","url":null,"abstract":"","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":" ","pages":"20220164c"},"PeriodicalIF":3.3,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10968757/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9108995","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 analysis of zirconia and titanium implant artefacts in three-dimensional virtual models of multi-slice CT and cone beam CT: does scan protocol matter?","authors":"Ragai Edward Matta, Stephanie Knapp Giacaman, Marco Wiesmueller, Rainer Lutz, Michael Uder, Manfred Wichmann, Anna Seidel","doi":"10.1259/dmfr.20230275","DOIUrl":"10.1259/dmfr.20230275","url":null,"abstract":"<p><strong>Objectives: </strong>Artefacts from dental implants in three-dimensional (3D) imaging may lead to incorrect representation of anatomical dimensions and impede virtual planning in navigated implantology. The aim of this study was quantitative assessment of artefacts in 3D STL models from cone beam CT (CBCT) and multislice CT (MSCT) using different scanning protocols and titanium-zirconium (Ti-Zr) and zirconium (ZrO₂) implant materials.</p><p><strong>Methods: </strong>Three ZrO₂ and three Ti-Zr implants were respectively placed in the mandibles of two fresh human specimens. Before (baseline) and after implant placement, 3D digital imaging scans were performed (10 repetitions per timepoint: voxel size 0.2 mm³ and 0.3 mm³ for CBCT; 80 and 140 kV in MSCT). DICOM data were converted into 3D STL models and evaluated in computer-aided design software. After precise merging of the baseline and post-op models, the surface deviation was calculated, representing the extent of artefacts in the 3D models.</p><p><strong>Results: </strong>Compared with baseline, ZrO₂ emitted 36.5-37.3% (±0.6-0.8) artefacts in the CBCT and 39.2-50.2% (±0.5-1.2) in the MSCT models. Ti-Zr implants produced 4.1-7.1% (±0.3-3.0) artefacts in CBCT and 5.4-15.7% (±0.5-1.3) in MSCT. Significantly more artefacts were found in the MSCT <i>vs</i> CBCT models for both implant materials (<i>p</i> < 0.05). Significantly fewer artefacts were visible in the 3D models from scans with higher kilovolts in MSCT and smaller voxel size in CBCT.</p><p><strong>Conclusions: </strong>Among the four applied protocols, the lowest artefact proportion of ZrO₂ and Ti-Zr implants in STL models was observed with CBCT and the 0.3 mm³ voxel size.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":" ","pages":"20230275"},"PeriodicalIF":2.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10968770/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10102775","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":"The role of deep learning for periapical lesion detection on panoramic radiographs.","authors":"Berrin Çelik, Ertugrul Furkan Savaştaer, Halil Ibrahim Kaya, Mahmut Emin Çelik","doi":"10.1259/dmfr.20230118","DOIUrl":"10.1259/dmfr.20230118","url":null,"abstract":"<p><strong>Objective: </strong>This work aimed to detect automatically periapical lesion on panoramic radiographs (PRs) using deep learning.</p><p><strong>Methods: </strong>454 objects in 357 PRs were anonymized and manually labeled. They are then pre-processed to improve image quality and enhancement purposes. The data were randomly assigned into the training, validation, and test folders with ratios of 0.8, 0.1, and 0.1, respectively. The state-of-art 10 different deep learning-based detection frameworks including various backbones were applied to periapical lesion detection problem. Model performances were evaluated by mean average precision, accuracy, precision, recall, F1 score, precision-recall curves, area under curve and several other Common Objects in Context detection evaluation metrics.</p><p><strong>Results: </strong>Deep learning-based detection frameworks were generally successful in detecting periapical lesions on PRs. Detection performance, mean average precision, varied between 0.832 and 0.953 while accuracy was between 0.673 and 0.812 for all models. F1 score was between 0.8 and 0.895. RetinaNet performed the best detection performance, similarly Adaptive Training Sample Selection provided F1 score of 0.895 as highest value. Testing with external data supported our findings.</p><p><strong>Conclusion: </strong>This work showed that deep learning models can reliably detect periapical lesions on PRs. Artificial intelligence-based on deep learning tools are revolutionizing dental healthcare and can help both clinicians and dental healthcare system.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":" ","pages":"20230118"},"PeriodicalIF":2.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10968763/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10102777","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":"Association between clinical manifestations of occlusal trauma and magnetic resonance imaging findings of periodontal ligament space.","authors":"Nanae Dewake, Manabu Miki, Yasuaki Ishioka, Suguru Nakamura, Akira Taguchi, Nobuo Yoshinari","doi":"10.1259/dmfr.20230176","DOIUrl":"10.1259/dmfr.20230176","url":null,"abstract":"<p><strong>Objectives: </strong>The purpose of this study was to evaluate the association between clinical manifestations of occlusal trauma of the teeth and maximum signal intensity of periodontal ligament space on MRI.</p><p><strong>Methods: </strong>20 subjects (males: 9, females: 11, mean age: 35.9 ± 14.0 years, range: 22-65 years) participated in this study. Subjective symptoms of bruxism, tooth mobility, fremitus, occlusal contact area, occlusal force, widening of the periodontal ligament space, and thickening of the lamina dura were defined as clinical manifestations of occlusal trauma. The total number of clinical manifestations was used to evaluate the degree of clinical occlusal trauma, with a score of 7 indicating the highest degree of occlusal trauma. The maximum signal intensity in the periodontal ligament space was evaluated by a specific <i>T</i>₂ weighted MRI sequence: IDEAL image.</p><p><strong>Results: </strong>Spearman's rank correlation between the total clinical occlusal trauma score and maximum signal intensity in the periodontal ligament space was 0.529 for all teeth, 0.517 for anterior teeth, and 0.396 for molar teeth (<i>p</i> < 0.001 for all).</p><p><strong>Conclusions: </strong>A significant correlation between the degree of occlusal trauma and the signal intensity of the periodontal ligament space suggests a new potential MRI-based method for objectively determining occlusal trauma.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":" ","pages":"20230176"},"PeriodicalIF":2.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10968768/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41157145","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":"How does the clinical and tomographic appearance of MRONJ influences its treatment prognosis?","authors":"Catalina Moreno Rabie, Santiago García-Larraín, David Contreras Diez de Medina, Isadora Cabello-Salazar, Rocharles Cavalcante Fontenele, Tim Van den Wyngaert, Reinhilde Jacobs","doi":"10.1259/dmfr.20230304","DOIUrl":"10.1259/dmfr.20230304","url":null,"abstract":"<p><strong>Objectives: </strong>To identify clinical and tomographic prognostic factors for conservative and surgical treatment of medication-related osteonecrosis of the jaws (MRONJ).</p><p><strong>Methods: </strong>A retrospective search identified patients treated with antiresorptive drugs (ARDs), diagnosed with Stage 1, 2 or 3 MRONJ, and having CBCT scans previous to conservative or surgical treatment. Following data collection, imaging assessment of the following parameters on each MRONJ site was performed: involvement of teeth and/or implants, presence of osteosclerosis, osteolysis, sequestrum formation, periosteal reaction, and pathological fractures. For statistical analysis, patients and lesions were divided into conservative and surgical treatment. Comparisons were made between successful and unsuccessful outcomes. Significance was set at <i>p</i> ≤ 0.05.</p><p><strong>Results: </strong>115 ARD-treated patients who developed 143 osteonecrosis lesions were selected. 40 patients and 58 lesions received conservative treatment, of which 14 patients (35%) and 25 lesions (43%) healed. Additionally, 75 patients and 85 lesions underwent surgery, with 48 patients (64%) and 55 lesions (65%) that healed. Clinical and tomographic risk factors for conservative treatment were MRONJ staging, tooth involvement, extensive osteosclerosis, and deep sequestrum formation (<i>p</i> < 0.05). Complementarily, poor prognostic indicators for surgical therapy were a short bisphosphonate (BP) holiday, MRONJ staging, absence of sequestrum formation, and presence of periosteal reaction (<i>p</i> < 0.05).</p><p><strong>Conclusions: </strong>Lesions at Stage 3 MRONJ, with tooth involvement, or sequestrum formation showed poor outcomes when conservative treatment is chosen. Alternatively, surgical treatment is most effective when BPs are discontinued, in Stage 1 lesions, in the presence of sequestrum formation, and absence of periosteal reaction.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":" ","pages":"20230304"},"PeriodicalIF":2.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10968764/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49689242","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":"Filtered back projection vs. iterative reconstruction for CBCT: effects on image noise and processing time.","authors":"Amanda Ramage, Bryan Lopez Gutierrez, Kathleen Fischer, Michael Sekula, Gustavo Machado Santaella, William Scarfe, Danieli Moura Brasil, Christiano de Oliveira-Santos","doi":"10.1259/dmfr.20230109","DOIUrl":"10.1259/dmfr.20230109","url":null,"abstract":"<p><strong>Objectives: </strong>To assess the effect of standard filtered back projection (FBP) and iterative reconstruction (IR) methods on CBCT image noise and processing time (PT), acquired with various acquisition parameters with and without metal artefact reduction (MAR).</p><p><strong>Methods: </strong>CBCT scans using the Midmark EIOS unit of a human mandible embedded in soft tissue equivalent material with and without the presence of an implant at mandibular first molar region were acquired at various acquisition settings (milliamperages [4mA-14mA], FOV [5 × 5, 6 × 8, 9 × 10 cm], and resolutions [low, standard, high] and reconstructed using standard FBP and IR, and with and without MAR. The processing time was recorded for each reconstruction. ImageJ was used to analyze specific axial images. Radial transaxial fiducial lines were created relative to the implant site. Standard deviations of the gray density values (image noise) were calculated at fixed distances on the fiducial lines on the buccal and lingual aspects at specific axial levels, and mean values for FBP and IR were compared using paired t-tests. Significance was defined as <i>p</i> < 0.05.</p><p><strong>Results: </strong>The overall mean for image noise (± SD) for FBP was 198.65 ± 55.58 and 99.84 ± 16.28 for IR. IR significantly decreased image noise compared to FBP at all acquisition parameters (<i>p</i> < 0.05). Noise reduction among different scanning protocols ranged between 29.7% (5 × 5 cm FOV) and 58.1% (5mA). IR increased processing time by an average of 35.1 s.</p><p><strong>Conclusions: </strong>IR significantly reduces CBCT image noise compared to standard FBP without substantially increasing processing time.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":" ","pages":"20230109"},"PeriodicalIF":2.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10968759/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10137866","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 convex triangular field of view influence the image shape distortion of high-density materials?","authors":"Deivi Cascante-Sequeira, Fernanda Coelho-Silva, Lucas P Lopes Rosado, Luiza Valdemarca Lucca, Deborah Queiroz Freitas, Sergio Lins de-Azevedo-Vaz, Francisco Haiter-Neto","doi":"10.1259/dmfr.20230029","DOIUrl":"10.1259/dmfr.20230029","url":null,"abstract":"<p><strong>Objectives: </strong>To assess the distortion of high-density materials using two CBCT devices presenting convex triangular and cylindrical fields of view (FOVs).</p><p><strong>Methods and materials: </strong>Four high-density cylinders were individually placed in a polymethylmethacrylate phantom. 192 CBCT scans were acquired using the convex triangular and cylindrical FOVs of Veraviewepocs^® R100 (R100) and Veraview^® X800 (X800) devices. Using Horos^TM's software, two oral radiologists determined the cylinders' horizontal and vertical dimensional alterations. Nine oral radiologists subjectively identified each cylinder's axial shape distortion. Statistical analysis comprised Multiway ANOVA (α = 5%), and the Kruskal-Wallis test.</p><p><strong>Results: </strong>The distortion in the axial plane was greater in the convex triangular FOVs for both devices in almost all the materials (<i>p</i> < 0.05). The evaluators subjectively identified a shape distortion in both FOVs for R100 device (<i>p</i> < 0.001), while no distortion was identified for X800 device (<i>p</i> = 0.620). A vertical magnification of all materials was observed in both FOVs for both devices (<i>p</i> < 0.05). No differences among vertical regions (<i>p</i> = 0.988) nor FOVs (<i>p</i> = 0.544) were found for the R100 device, while all materials showed higher magnification in all regions in the cylindrical FOV (<i>p</i> < 0.001) of the X800 device.</p><p><strong>Conclusions: </strong>The convex triangular FOV influenced the axial distortion of the high-density materials in both devices. A vertical magnification was observed in both FOVs of both devices, but it was greater in the cylindrical FOV of the X800 device.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":" ","pages":"20230029"},"PeriodicalIF":2.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10968767/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9754654","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":"Three-dimensional mapping of the greater palatine artery location and physiology.","authors":"Baiyan Qi, Reza Khazeinezhad, Ali Hariri, Wonjun Yim, Zhicheng Jin, Lekshmi Sasi, Casey Chen, Jesse V Jokerst","doi":"10.1259/dmfr.20230066","DOIUrl":"10.1259/dmfr.20230066","url":null,"abstract":"<p><strong>Objective: </strong>To develop a novel technique for localizing and reconstructing the greater palatine artery (GPA) using three-dimensional (3D) technology.</p><p><strong>Methods: </strong>A miniaturized intraoral ultrasound transducer was used to imaging landmarks including the GPA, gingival margin (GM), and palatal masticatory mucosa (PMM). A 5-mm-thick solid hydrogel couplant was integrated to replace traditional ultrasound gel and avoid bubbles when moving the transducer.</p><p><strong>Results: </strong>A panorama image provided the relative localization of landmarks including the GPA, PMM, and hard palate. Short- and long-axis imaging of GPA was performed in five subjects including 3D mapping of GPA branches and surrounding tissues in a volume of 10 mm × 8 mm × 10 mm. Full-mouth Doppler imaging was also demonstrated on both the dorsal and ventral tongue as well as buccal mucosa and sublingual region on two subjects.</p><p><strong>Conclusions: </strong>This study can measure the vertical distance from the GM to the GPA and depth from PMM to GPA and visualize the GPA localization in a 3D manner, which is critical to evaluate the available volume of palatal donor tissues and avoid sectioning of GPA during surgical harvesting of the tissues. Finally, the transducer's small size facilitates full-mouth Doppler imaging with the potential to improve the assessment, diagnosis, and management of oral mucosa.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":" ","pages":"20230066"},"PeriodicalIF":2.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10968761/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10166653","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":"Imaging findings of arrested pneumatisation and differentiation from other skull base lesions.","authors":"Ikuho Kojima, Yusuke Shimada, Naoko Watanabe, Kentaro Takanami, Yohei Morishita, Akira Ohkoshi, Masahiro Iikubo","doi":"10.1259/dmfr.20230297","DOIUrl":"10.1259/dmfr.20230297","url":null,"abstract":"<p><strong>Objectives: </strong>Arrested pneumatisation (AP) is an anatomic variant of the sphenoid sinus. Since AP remains underrecognised, otolaryngologists and radiologists may mistake AP for a lesion and perform follow-up imaging studies. We investigated the imaging findings of CT, MRI, and F-18 fludeoxyglucose (FDG)-positron emission tomography (PET) for AP, and discussed the differences between AP and other skull base lesions.</p><p><strong>Methods: </strong>We reviewed multidetector low CT imaging of 442 patients (285 men and 157 women; age range, 19-93 years; mean age, 67.8 years) who underwent FDG-PET/CT for head and neck tumours between January 2019 and December 2019. The imaging findings of AP were reviewed on CT, MRI, FDG-PET/CT, and compared with those of fibrous dysplasia, chordoma, chondrosarcoma, multiple myeloma, and bone invasion of nasopharyngeal carcinoma.</p><p><strong>Results: </strong>AP was identified in 22 patients (14 men and 8 women; age range, 24-93 years; mean age, 67.0 years) based on criteria from previous reports. AP manifested with well-circumscribed sclerotic margins on CT, without evidence of expansion. AP showed high-signal intensity on <i>T</i>₁-/<i>T</i>₂ weighted MRI. FDG-PET revealed non-significant uptake [maximum standardised uptake value (SUV_max): 0.85 (range, 0.4-1.27)] in AP. Contrastingly, skull base lesions showed expansion, poorly circumscribed boundaries without osteosclerotic margins, and moderate-to-severe FDG uptake (SUV_max: 1.8-8.4).</p><p><strong>Conclusions: </strong>The characteristic imaging findings of AP, namely non-expansile on CT and non-uptake on FDG-PET, may aid in its differentiation from other skull base lesions.</p>","PeriodicalId":11261,"journal":{"name":"Dento maxillo facial radiology","volume":" ","pages":"20230297"},"PeriodicalIF":2.9,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10968760/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49689243","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}