Oral Radiology最新文献

{"title":"Age determination by measurement of pulp volume of canine teeth in patients with cleft lip and palate: a retrospective study.","authors":"Elif Akbas Akca, Rabia Duman Tepe, Ilknur Ozcan, Hulya Cakir Karabas","doi":"10.1007/s11282-025-00802-9","DOIUrl":"10.1007/s11282-025-00802-9","url":null,"abstract":"<p><strong>Objectives: </strong>This study evaluates the potential of pulp volume/total tooth-volume measurements of canine teeth in relation to chronologic age in patients with cleft lip and palate (CLP). The significance of this study lies in its exploration of the usability of these measurements for age determination in CLP patients, providing a novel perspective to the existing literature.</p><p><strong>Methods: </strong>Cone beam computed tomography images of 33 patients (16 females, 17 males) with unilateral CLP aged 14-45 years and 33 age- and sex-matched healthy individuals (16 females, 17 males) were retrospectively evaluated. Using ITK-SNAP software, pulp and whole tooth volumes of canine teeth on the non-defect side of CLP patients and the corresponding side of healthy individuals were measured. Their relationship with chronologic age was evaluated, and comparisons were made between the CLP and control groups.</p><p><strong>Results: </strong>No statistically significant difference was observed between the whole tooth volume, pulp volume, and pulp volume/total tooth-volume ratios of the control and CLP groups. A paired t test comparing chronologic age and calculated mean age of both groups found no significant difference.</p><p><strong>Conclusions: </strong>The results show that the pulp and total tooth-volume ratios of canine teeth in the non-defect areas of individuals with unilateral CLP correlate with chronologic age and can be used reliably for age determination. This indicates that individuals with CLP can be evaluated similarly to healthy individuals, allowing accurate age estimation based on dental measurements.</p>","PeriodicalId":56103,"journal":{"name":"Oral Radiology","volume":" ","pages":"331-339"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143054227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of a handheld X-ray unit in the diagnosis of proximal caries lesions using different digital systems.","authors":"Débora Costa Ruiz, Rocharles Cavalcante Fontenele, Hugo Gaêta-Araujo, Amanda Farias-Gomes, Matheus L Oliveira, Deborah Queiroz Freitas, Francisco Haiter-Neto","doi":"10.1007/s11282-025-00805-6","DOIUrl":"10.1007/s11282-025-00805-6","url":null,"abstract":"<p><strong>Objectives: </strong>To assess the influence of a handheld X-ray unit in the diagnosis of proximal caries lesions using different digital systems by comparing with a wall-mounted unit.</p><p><strong>Methods: </strong>Radiographs of 40 human teeth were acquired using the Eagle X-ray handheld unit (Alliage, São Paulo, Brazil) set at 2.5 mA, 60 kVp and an exposure time of 0.45 s. Then, new radiographs of the teeth were acquired using the Focus X-ray wall-mounted unit (Instrumentarium, Tuusula, Finland) set at 7 mA, 60 kVp, and exposure time of 0.16 s. Three digital systems were used: a photostimulable phosphor plate receptor (Express system) and two complementary metal oxide semiconductor sensors (Digora Toto and SnapShot systems). Five oral and maxillofacial radiologists individually assessed the radiographs. Area under the receiver-operating characteristic curve (AUC), sensitivity, and specificity were calculated from the responses of the examiners and compared using Analysis of Variance at a significance level of 5%. The weighted Kappa index evaluated the intra- and inter-examiner agreements for caries lesions diagnosis.</p><p><strong>Results: </strong>The handheld X-ray unit did not influence on the diagnostic metrics for the three digital systems used when compared with the wall-mounted unit (p > 0.05). The SnapShot showed higher AUC value than Digora Toto (p < 0.05). The mean values of intra- and inter-examiner agreements were 0.654 (substantial) and 0.365 (fair), respectively.</p><p><strong>Conclusions: </strong>The diagnostic accuracy for detecting proximal caries lesions is not influenced by the use of a handheld X-ray unit, regardless of the digital system used.</p>","PeriodicalId":56103,"journal":{"name":"Oral Radiology","volume":" ","pages":"349-354"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143017045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance comparison in workflow efficiency between a remotely installed 3D workstation and an on-premises image processing workstation for dental cone-beam CT image reconstruction.","authors":"Ryoichi Tanaka, Hiroki Mouri, Noriaki Takahashi, Mitsuru Izumisawa, Masayuki Hoshino, Riku Sakamoto, Takaki Kanamori, Ami Shimamura, Ryota Sakai, Emi Kanno, Motoi Sawano","doi":"10.1007/s11282-025-00806-5","DOIUrl":"10.1007/s11282-025-00806-5","url":null,"abstract":"<p><strong>Objectives: </strong>This study aims to compare the image processing times of dental cone beam CT (CBCT) images using a remote medical image processing workstation (RW) versus on-premises image processing (OP) and assess its impact on workflow efficiency.</p><p><strong>Methods: </strong>Data from 100 CBCT cases were randomly selected and processed using the OP3D VISION 17-19DX (EH Japan Co., Ltd.). In the OP environment, OnDemand 3D Dental (Cybermed Inc.) was used on a local terminal, while the RW setup involved a remote workstation-ZIO STATION (Ziosoft Inc.) connected via a 2 Gbps network. Seven experienced dentists processed the same data in both environments, and various processing times, including data transfer, re-slicing, 3D reconstruction, and PACS transfer, were compared.</p><p><strong>Results: </strong>The RW environment showed significantly shorter data transfer and re-slicing times than the OP environment. However, 3D image reconstruction times were similar between the two setups. Overall, processing time was significantly reduced in the RW environment. Variability in processing times among operators was observed, with most achieving reductions in the RW environment.</p><p><strong>Conclusions: </strong>Remote processing of dental CBCT images using a dedicated image processing device offers equivalent or improved performance compared to on-premises processing. This approach can enhance workflow efficiency by reducing processing times and freeing up local resources, although further research is needed to optimize remote display protocols and multi-client access.</p>","PeriodicalId":56103,"journal":{"name":"Oral Radiology","volume":" ","pages":"355-362"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12167279/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143034791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of mastoid emissary foramen morphology: a multidetector computed tomography study.","authors":"Ahmet Faruk Ertürk, Gürkan Ünsal, Sevde Göksel, Elif Çelebi, Hamit Tunç, Maria Maddalena Marrapodi, Marco Cicciù, Giuseppe Minervini","doi":"10.1007/s11282-025-00808-3","DOIUrl":"10.1007/s11282-025-00808-3","url":null,"abstract":"<p><strong>Objectives: </strong>This study aimed to assess the occurrence and morphological features of the mastoid emissary foramen (MEF) using multidetector computed tomography (MDCT) images. The analysis highlights the clinical significance of these structures and their implications for surgical procedures.</p><p><strong>Methods: </strong>A total of 357 patients were evaluated using MDCT in bone window mode with a high-resolution technique (1 mm). The presence, number, and mean diameter of the MEFs were recorded. Statistical analyses compared data between both sides and sexes.</p><p><strong>Results: </strong>714 sides from 357 patients (177 male, 180 female) were analyzed. The patients' ages ranged from 7 to 83 years, with a mean age of 25.6. MEFs were found in 329 patients, representing 92.15% of the total. The diameters of the MEFs ranged from 0.6 mm to 5.0 mm on the right side (mean 1.80 mm) and from 0.6 mm to 4.4 mm on the left side (mean 1.96 mm). Up to 3 MEFs were identified on the right side, and a maximum of 6 on the left. No significant differences in MEF presence were observed between sexes or between the left and right sides (p > 0.05).</p><p><strong>Conclusion: </strong>This study reveals a high prevalence and notable anatomical variations in the MEF, with MEFs larger than previously reported. At least one MEF was detected in 92.15% of cases, emphasizing the importance of comprehensive preoperative evaluation.</p>","PeriodicalId":56103,"journal":{"name":"Oral Radiology","volume":" ","pages":"372-377"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12167318/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143506306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of the masseter, anterior temporalis, and sternocleidomastoid muscles in myofascial temporomandibular disorder pain: evaluation of thickness and stiffness by ultrasonography.","authors":"Fatma Akkoca, Seher Ozyurek, Gunnur Ilhan, Emre Koyuncu, Melih Ozdede","doi":"10.1007/s11282-025-00807-4","DOIUrl":"10.1007/s11282-025-00807-4","url":null,"abstract":"<p><strong>Objectives: </strong>This study aimed to compare the thickness and stiffness of the masseter, anterior temporalis, and sternocleidomastoid muscles of patients diagnosed with myofascial temporomandibular disorders (TMD) pain to those of a control group.</p><p><strong>Methods: </strong>This was a cross-sectional study conducted at a single center. Twenty-five patients diagnosed with myofascial TMD pain and 29 asymptomatic controls (Control Group) matched by age and sex were recruited. B-mode ultrasonography and shear wave elastography were used to measure the thickness and stiffness of the bilateral masseter, temporalis, and sternocleidomastoid muscles. All measurements were performed while resting and clenching. Patients were systematically evaluated for pain intensity and maximum mouth opening.</p><p><strong>Results: </strong>There were no differences between groups in the resting and clenching thickness of any muscles (p > 0.05). There were no differences in the stiffness of the measured muscles at rest and clench between the groups, except for the masseter (p > 0.05). Individuals with myofascial TMD pain showed higher median stiffness in the right (p < 0.001) and left (p = 0.003) masseter muscles during clenching (but not during resting) compared with controls.</p><p><strong>Conclusions: </strong>Clenching masseter stiffness was greater in individuals with myofascial TMD pain than in asymptomatic controls. These findings might help to understand the jaw biomechanics and dysfunction of individuals with myofascial TMD pain.</p>","PeriodicalId":56103,"journal":{"name":"Oral Radiology","volume":" ","pages":"363-371"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143400876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Association between CT image findings and hypoesthesia in the mental region and lower lip after dentigerous cyst removal: a retrospective study and literature review.","authors":"Shinichiro Yamada, Hizuru Osanai, Kozue Mori, Noriyuki Sugino, Akira Taguchi","doi":"10.1007/s11282-025-00813-6","DOIUrl":"10.1007/s11282-025-00813-6","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate the role of computed tomography (CT)/cone-beam computed beam CT (CBCT) in association with hypoesthesia of the mental region and lower lip during the surgical removal of DCs.</p><p><strong>Methods: </strong>A retrospective cohort study was performed involving 39 impacted mandibular DC cases between February 2011 and March 2022. We studied the association of hypoesthesia in relation to the age and sex of the patient and to growth direction and expansion of the DC on the CT/CBCT image findings. The preoperative CT/CBCT image findings were statistically analyzed in accordance with diagnoses of DCs confirmed based on pathology. Fisher's exact test was used to test the relationship between hypoesthesia and CT/CBCT imaging findings. In addition, PubMed and PubMed Central were searched using keywords such as \"hypoesthesia\" to find relevant studies. Reports of hypoesthesia of the mental region and lower lip were derived from the selected literature.</p><p><strong>Results: </strong>The frequency of hypoesthesia recorded was 35.9%. No statistically significant association was observed for all hypoesthesia and CT/CBCT image findings.</p><p><strong>Conclusions: </strong>Imaging evaluation was performed in 39 dentigerous cysts, and a literature review was performed. We found that CT/CBCT alone does not provide sufficiently reliable images required for predicting nerve lesions. Future prospective studies are required.</p>","PeriodicalId":56103,"journal":{"name":"Oral Radiology","volume":" ","pages":"414-420"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143558867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating the effectiveness of MAR algorithm on magnitude of artifacts in CBCT images: a systematic review.","authors":"Faezeh Yousefi, Younes Mohammadi, Kimia Nikikhah, Forough Abbasiyan","doi":"10.1007/s11282-025-00815-4","DOIUrl":"10.1007/s11282-025-00815-4","url":null,"abstract":"<p><strong>Background: </strong>There has been an increasing interest in the use of implants to treat edentulous patients. In this regard, the use of cone beam computed tomography (CBCT) offers a variety of advantages compared with other imaging methods. However, the creation of beam-hardening artifacts adversely affects the quality of images. To our knowledge, little is known about the actual effectiveness of the Metal Artifact Reduction (MAR) algorithm on image quality improvement.</p><p><strong>Objectives: </strong>The objective of this study is to conduct a systematic review to investigate the effectiveness of the MAR algorithm on the magnitude of artifacts generated in CBCT images.</p><p><strong>Materials and methods: </strong>An electronic search was performed in electronic databases, including PubMed, Scopus, Web of Science, and Google Scholar. For each database, the search strategy was defined specifically. Studies that had the inclusion criteria for this review were imported into Endnote version 20. The risk of bias in the studies included in this systematic review was assessed by two independent reviewers based on the Joanna Briggs Institute (JBI)'s Critical Appraisal checklist. The selected final articles were scored based on the specified checklist. After reviewing selected articles, it was not possible to perform a meta-analysis due to the heterogeneity and multiplicity of the variables, and the studies were included in the systematic review.</p><p><strong>Results: </strong>A total of 4738 studies were identified. After eliminating duplicate and unrelated articles, 10 articles met the inclusion criteria. Results showed that the use of the MAR algorithm in the preparation of CBCT scans reduces the standard deviation (SD) of gray values. However, no definite result was achieved in relation to the contrast-to-noise ratio (CNR). In fact, it cannot be definitively concluded whether the use of the MAR algorithm will increase the CNR.</p><p><strong>Conclusion: </strong>The results of this systematic review demonstrated that we cannot provide a definite answer regarding the effect of the MAR algorithm on reducing the artifacts around dental implants. The explanation is that this factor is affected by many variables, whose change can have a significant effect on the magnitude of artifacts generated in the image.</p>","PeriodicalId":56103,"journal":{"name":"Oral Radiology","volume":" ","pages":"311-319"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143652064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of the correlation between the volume of tongue, oral cavity, tongue/oral cavity volume ratio and the upper airway in unilateral cleft subjects: A CBCT study.","authors":"Fatemeh Akbarizadeh, Navid Fathi, Shahram Hamedani","doi":"10.1007/s11282-024-00800-3","DOIUrl":"10.1007/s11282-024-00800-3","url":null,"abstract":"<p><strong>Objectives: </strong>The current study was conducted to assess the volume of the tongue, oral cavity, and tongue/oral cavity and their correlation with the volume of the upper airway in cleft subjects compared with the control group.</p><p><strong>Methods: </strong>The study population included 60 CBCT images from dental school. The sample comprised 30 unilateral cleft patients and 30 sex and age-matched healthy subjects. The CBCT images were imported to the Mimics software in DICOM format. Then, the segmentation process was done in order to create distinct masks for the upper airway, oral cavity, and tongue. The software calculated the volume of the created masks.</p><p><strong>Results: </strong>The volume of tongue, oral and upper airway were significantly lower in cleft patients than in the control group (P value < 0.05 taken as statistically significant). There was a weak but statistically significant correlation between the U.A.W.V and T.V in both cleft and non-cleft subjects. Additionally, there was a statistically significant correlation between the O.C.V and the U.A.W.V in cleft subjects.</p><p><strong>Conclusions: </strong>Except than the proportion of tongue/oral cavity volume, other volumetric measurements were significantly lower in cleft subjects than control group. This reveals that clefts are not necessarily more susceptible to obstructive sleep apnea. Also, the positive correlation between the volume of the tongue and oral cavity with the upper airway confirms that early expansion of the maxillary region in clefts helps significantly in increasing their upper airway volume.</p>","PeriodicalId":56103,"journal":{"name":"Oral Radiology","volume":" ","pages":"320-330"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143016967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of stimulated and unstimulated salivary gland parenchyma using fractal analysis of ultrasonographic images.","authors":"Numan Dedeoğlu, Oğuzhan Altun, Duygu Çelik Özen, Gözde Eşer","doi":"10.1007/s11282-025-00811-8","DOIUrl":"10.1007/s11282-025-00811-8","url":null,"abstract":"<p><strong>Objective: </strong>To compare the fractal analysis data of ultrasonography (USG) images of the submandibular and parotid glands before and after parenchymal stimulation to assess for any changes.</p><p><strong>Methods: </strong>The study was conducted by taking 240 USG images of bilateral parotid and submandibular glands of 30 patients before and after stimulation. Patients chewed gum for stimulating their salivary glands. Fractal analysis was performed on the USG images, and the data obtained were statistically compared.</p><p><strong>Results: </strong>The fractal analysis value of the USG images of the parotid gland was 1.45, both before and after stimulation, indicating no statistically significant difference (p = 0.866). In the submandibular gland, this value was the same before and after stimulation (fractal analysis = 1.42), showing no statistically significant difference (p = 0.748). Parotid and submandibular glands were compared. USG fractal analysis values before and after stimulation and the overall values were statistically significantly different between the different salivary glands (p < 0.05).</p><p><strong>Conclusion: </strong>According to fractal analysis, there was no change in the parenchyma of the submandibular and parotid glands despite the stimulation. Submandibular and parotid glands could be distinguished by fractal analysis.</p>","PeriodicalId":56103,"journal":{"name":"Oral Radiology","volume":" ","pages":"396-402"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143517407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a novel phantom for evaluating jawbone SPECT targeting medication-related osteonecrosis of the jaw.","authors":"Naoya Hayashi, Norikazu Matsutomo, Ryotaro Tokorodani, Mitsuha Fukami, Miki Nishimori, Hitomi Iwasa, Kie Nakatani, Tetsuya Yamamoto, Takuji Yamagami, Tomoaki Yamamoto","doi":"10.1007/s11282-025-00809-2","DOIUrl":"10.1007/s11282-025-00809-2","url":null,"abstract":"<p><strong>Objective: </strong>We developed a new phantom for technical evaluation of jawbone single-photon emission computed tomography (SPECT) examinations for medication-related osteonecrosis of the jaw (MRONJ). In this study, we verified the utility of the phantom by determining optimal image reconstruction parameters.</p><p><strong>Methods: </strong>We evaluated the image quality and quantification in jawbone SPECT images obtained by different reconstruction parameters using the phantom. The phantom images were acquired using a SPECT/computed tomography (CT) system and then reconstructed using ordered-subset expectation maximization (OSEM) iterative reconstruction with resolution recovery as well as scatter and attenuation correction with various update numbers and Gaussian filter full width at half maximums (FWHMs). The percent contrast (%contrast) and absolute recovery coefficient were calculated to determine the optimal reconstruction parameters (OSEM_jaw). Nineteen patients with a clinical diagnosis of MRONJ who underwent bone SPECT/CT were enrolled for the clinical study. The performance of OSEM_jaw was verified by comparison with OSEM_current determined by a spherical phantom, using the correlation between the mean standardized uptake value (SUV_mean) and clinical staging and visual assessment as endpoints.</p><p><strong>Results: </strong>In the phantom study, %contrast and absolute recovery coefficient increased with increasing update numbers. As the Gaussian filter FWHM increased, the quantitative accuracy and image sharpness decreased. The parameter determined by the phantom study (OSEM_jaw) recommended 120 updates and no filter. In the clinical study, the mean and standard deviation of SUV_mean obtained from OSEM_jaw were 8.9 ± 1.4 for stage 1 lesions, 12.9 ± 4.1 for stage 2 lesions, and 13.8 ± 1.4 for stage 3 lesions. For OSEM_current, they were 5.4 ± 2.3 for stage 1 lesions, 8.3 ± 2.5 for stage 2 lesions, and 8.0 ± 0.9 for stage 3 lesions. The SUV_mean obtained from OSEM_jaw had a stronger correlation with clinical stage. Based on visual assessment, the quality of the SPECT images reconstructed by OSEM_jaw (3.7 ± 0.9) was superior to that reconstructed by OSEM_current (2.9 ± 1.1).</p><p><strong>Conclusions: </strong>We developed a novel phantom and adapted it for technical evaluation. This study demonstrated the utility of the developed phantom.</p>","PeriodicalId":56103,"journal":{"name":"Oral Radiology","volume":" ","pages":"378-387"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12167234/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143517455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}