International Journal of Diagnostic Imaging最新文献

Aging and cortical bone density of mandible with CBCT CBCT对下颌骨老化与皮质骨密度的影响

International Journal of Diagnostic Imaging Pub Date : 2018-12-04 DOI: 10.5430/IJDI.V5N2P23

I. Ogura, Yoshihiko Sasaki, Mikiko Sue, Takaaki Oda, A. Kameta, Kazuhide Hayama

{"title":"Aging and cortical bone density of mandible with CBCT","authors":"I. Ogura, Yoshihiko Sasaki, Mikiko Sue, Takaaki Oda, A. Kameta, Kazuhide Hayama","doi":"10.5430/IJDI.V5N2P23","DOIUrl":"https://doi.org/10.5430/IJDI.V5N2P23","url":null,"abstract":"Purpose: To investigate changes of mandibular cortical bone with age using cone-beam computed tomography (CBCT).Materials and methods: We reviewed the CBCT images of 202 patients who were examined in mandibular region by CBCT. The patients were classified into 2 age groups: young group (≦50 years; 51 male (age range 13-50 years, mean age 27.6 years) and 73 female (age range 11-50 years, mean age 30.0 years)) and elderly group (＞50 years; 22 male (age range 53-74 years, mean age 63.8 years) and 56 female (age range 51-82 years, mean age 66.3 years)). The relationship between age and mandibular cortical bone radiographic density as gray values using CBCT was assessed by Pearson's rank correlation test. Regarding age groups, mandibular cortical bone radiographic density using CBCT was performed with one-way repeated measures analysis of variance with Tukey's HSD test.Results: Cortical bone radiographic density in female using CBCT was significantly correlated to age (Y = -6.741X + 1946, R2 = 0.351, P = .000). Furthermore, the cortical bone radiographic density in young female (1754 ± 144) was significantly higher than that in young male (1554 ± 164, P = .000), elderly male (1533 ± 115, P = 0.000) and elderly female (1484 ± 228, P = 0.000).Conclusions: The present study confirmed the changes of mandibular cortical bone with age in female using CBCT. Furthermore, the evaluation of mandibular cortical bone using CBCT can be helpful in intercepting patients at risk of reduced bone mineral density.","PeriodicalId":135923,"journal":{"name":"International Journal of Diagnostic Imaging","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129970133","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}

引用次数: 3

Imaging finding in diabetic mastopathy: A case report 糖尿病性乳腺病变的影像学表现1例

International Journal of Diagnostic Imaging Pub Date : 2018-11-11 DOI: 10.5430/IJDI.V5N2P19

Lynda Nadine Gui Bilé, H. Antoun, Judicael Ahoury, Raissa M. Kabas, Estelle Valrie Ohui-Acko, F. Amrar-Vennier

引用次数: 0

Comparison of image quality of an abdominal acquisition mode of angiography systems from four major manufacturers 四家主要制造商血管造影系统腹部采集模式的图像质量比较

International Journal of Diagnostic Imaging Pub Date : 2018-08-13 DOI: 10.5430/IJDI.V5N2P6

L. Sukupova, J. Rydlo, Ondřej Hlaváček, D. Vedlich, J. Peregrin

{"title":"Comparison of image quality of an abdominal acquisition mode of angiography systems from four major manufacturers","authors":"L. Sukupova, J. Rydlo, Ondřej Hlaváček, D. Vedlich, J. Peregrin","doi":"10.5430/IJDI.V5N2P6","DOIUrl":"https://doi.org/10.5430/IJDI.V5N2P6","url":null,"abstract":"Objective: The aim of this study was to compare image quality of different abdominal acquisition modes under conditions simulating obese patients whose images suffer more from noise and scatter radiation. Images were acquired in clinically used acquisition modes on the static and dynamic phantom for four angiography systems.Methods: A LEGO cart with 34 cm of PMMA and Pro-RTG Fluo18 phantom were used to simulate obese patients. The low-contrast resolution was assessed subjectively by two readers and objectively using signal-difference-to-noise ratio (SDNR) and using SDNR to air kerma rate. The line-pair resolution was assessed using the transmitted contrast value for line-pair groups.Results: Systems use different exposure parameters and dose but they differ in postprocessing too. Qualitative and quantitative assessments of noise produced similar results, images produced by systems A and C were noisier than by systems B and D. Highest SDNR was provided by System B, whilst System A produced the lowest values, which were almost the same for objects with different contrast. The image quality was affected mainly by frame lengths and postprocessing, but also by the dose. The images of the static phantom were better compared to the images of the dynamic phantom, which was an expected result.Conclusions: It was possible to identify image quality differences and to characterize features of postprocessing from measurements on standardized objects. A potential for optimization on some systems was identified, although further work, including assessment of clinical images, would be needed as part of the optimization process.","PeriodicalId":135923,"journal":{"name":"International Journal of Diagnostic Imaging","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131625115","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}

引用次数: 0

Foetal vascular lesion-Case report 胎儿血管病变1例报告

International Journal of Diagnostic Imaging Pub Date : 2018-05-28 DOI: 10.5430/IJDI.V5N2P1

N. Vedmedovska, S. Polukarova, S. Dzelzīte

{"title":"Foetal vascular lesion-Case report","authors":"N. Vedmedovska, S. Polukarova, S. Dzelzīte","doi":"10.5430/IJDI.V5N2P1","DOIUrl":"https://doi.org/10.5430/IJDI.V5N2P1","url":null,"abstract":"Frequency and preciseness of prenatal detection of foetal tumours increases due to improvement of sophisticated imaging methods. As correct diagnosis impacts the course of care in utero, it is essentially to improve diagnostic workout in a case of detected foetal anomalies. Here we report the case of partly involuting congenital haemangioma of foetus, which antenataly caused foetal secondary cardiomegaly. Pregnant woman was referred to Riga Maternity Hospital with unexplained tumour on the surface of foetal head at 24+2 weeks of gestation. Ultrasound exam revealed tubular structure without solid components between calvarium and skin under the left ear with very rich vascularization. Magnetic Resonance Image demonstrated enhancing multi-cystic lobulated mass. Hypertrophic secondary cardiomegaly was present without any additional structural abnormality. The foetus remained stable until 36+4 weeks of gestation, when the size of tumour succeeded 85 mm × 46 mm. Haemangioma was confirmed after delivery as round raised and infiltrating vascular lesion. After birth MRI demonstrated its connection with a. carotis externa. Propranolol was recommended with continuing follow-up. At 2 years and 3 months of age the lesion decreased by size noticeably, but still persists. Accurate diagnosis lets obstetricians to optimize antenatal care by providing an opportunity for planning deliveries, preparing family and medical staff for appropriate postpartum therapy and management.","PeriodicalId":135923,"journal":{"name":"International Journal of Diagnostic Imaging","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121919703","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}

引用次数: 0