International Journal of Radiation Research最新文献_第8页

Selection of kilovolt based on body mass index reduced radiation dose for computed tomography-guided radiofrequency ablation of liver tumors 在计算机断层扫描引导下对肝脏肿瘤进行射频消融时，根据体重指数选择千伏值可减少辐射剂量

IF 0.6 4区医学

International Journal of Radiation Research Pub Date : 2023-06-01 DOI: 10.61186/ijrr.21.3.531

J. Zhao, G. Nie, Z. Liu, Y. Zhao, D. Zhao, L. Zheng

引用次数: 0

Effect of multi-dimensional nursing combined with early postoperative activity on the prognosis of patients undergoing laparoscopic radical gastrectomy for gastric cancer 多维护理联合术后早期活动对腹腔镜胃癌根治术患者预后的影响

IF 0.6 4区医学

International Journal of Radiation Research Pub Date : 2023-06-01 DOI: 10.61186/ijrr.21.3.399

C.J. Peng, T. Chen

引用次数: 0

Radiation safety and radiation monitoring practices among medical radiation workers in Malaysia 马来西亚医疗辐射工作人员的辐射安全和辐射监测做法

IF 0.6 4区医学

International Journal of Radiation Research Pub Date : 2023-06-01 DOI: 10.61186/ijrr.21.3.459

S. F. Mohd Ridzwan, L. Fritschi, N. Bhoo-Pathy

引用次数: 0

Isolated scapular metastasis from breast carcinoma 乳腺癌的孤立肩胛转移灶

IF 0.6 4区医学

International Journal of Radiation Research Pub Date : 2023-06-01 DOI: 10.61186/ijrr.21.3.605

H. Baysal, B. Baysal, M. Tarik Tatoglu, O. Alimoglu

引用次数: 0

Gamma analysis of patient specific quality assurance by hybrid acceptance criterion method 采用混合验收标准法对患者特定质量保证进行伽马分析

IF 0.6 4区医学

International Journal of Radiation Research Pub Date : 2023-06-01 DOI: 10.61186/ijrr.21.3.505

A. Watcharawipha, I. Chitapanarux

引用次数: 0

Imaging features of intestinal metastasis from pulmonary sarcomatoid carcinoma 肺肉瘤样癌肠道转移的影像学特征

IF 0.6 4区医学

International Journal of Radiation Research Pub Date : 2023-06-01 DOI: 10.61186/ijrr.21.3.513

H. Wu, T. Tang, L. Yi

引用次数: 0

The accurate diagnosis of grand microvascular imaging in differentiating benign and malignant thyroid nodules: A meta-analysis 大微血管成像鉴别甲状腺良恶性结节的准确诊断:一项荟萃分析

IF 0.6 4区医学

International Journal of Radiation Research Pub Date : 2022-04-01 DOI: 10.52547/ijrr.20.2.2

Y. Zhou, C. Wang

{"title":"The accurate diagnosis of grand microvascular imaging in differentiating benign and malignant thyroid nodules: A meta-analysis","authors":"Y. Zhou, C. Wang","doi":"10.52547/ijrr.20.2.2","DOIUrl":"https://doi.org/10.52547/ijrr.20.2.2","url":null,"abstract":"Background : Meta-analysis experiments can be used to judge the hypothesis of SMI benign and malignant thyroid nodules. Material and Methods : We explored Cochrane Library, PubMed, Google Scholar, CBM and Web of Science, databases according to the required content, and used a number of analysis equipment to analyze, and through the conclusions drawn to determine the sensitivity (Sen) and specificity (Spe), the probability ratio of pragmatic and dismissive (LR + / LR-), diagnostic factor (DOR) and receiver performance typical curve (SROC) are calculated for summary statistics. Results : The meta-analysis included nine studies that met the participation criteria. An aggregation of 636 malignant thyroid legumes and 732 benign thyroid nodules were evaluated. The comprehensive Sen was 0.79 (95% confidence interval (CI) = 0.76-0.82), and the comprehensive Spe was 0.89 (95% CI = 0.85-0.92). The comprehensive LR + was 7.04 (95% CI = 5.26-9.43), and the comprehensive negative LR- was 0.23 (95% CI = 0.20-0.27). The comprehensive DOR of thyroid nodules diagnosed by SMI was 30.33 (95% confidence interval = 20.73–44.38). The range beneath the SROC curve was 0.82 (95% confidence interval = 0.79 to 0.86). We established no proof of reporting bias (t = 0.91, P = 0.39). Conclusion : In a related meta-analysis, the study found that SMI has a very high prognosis accuracy in distinguishing malignant and benign thyroid nodules.","PeriodicalId":48815,"journal":{"name":"International Journal of Radiation Research","volume":"17 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90394179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Voxel-based dose calculation of radionuclide imaging and therapy for preclinical studies using GEANT4 Monte Carlo simulation 基于体素剂量计算的放射性核素成像和治疗的临床前研究使用GEANT4蒙特卡罗模拟

IF 0.6 4区医学

International Journal of Radiation Research Pub Date : 2022-04-01 DOI: 10.52547/ijrr.20.2.9

H. Liu, C. Geng, X. Tang, L. Tang, X. Li, P. Xu

{"title":"Voxel-based dose calculation of radionuclide imaging and therapy for preclinical studies using GEANT4 Monte Carlo simulation","authors":"H. Liu, C. Geng, X. Tang, L. Tang, X. Li, P. Xu","doi":"10.52547/ijrr.20.2.9","DOIUrl":"https://doi.org/10.52547/ijrr.20.2.9","url":null,"abstract":"Background : This study aims to investigate voxel - level dose calculation methods and improve its calculation efficiency in nuclear medicine that can consider animal - specific heterogeneous tissue compositions and radiopharmaceutical biodistributions simultaneously. Materials and Methods : The voxelized mouse phantom was constructed from real mouse CT images and simulated using the Monte Carlo GEANT4 code. According to the dynamic PET images of real mouse, the real distribution of radiopharmaceutical activity was set in the Monte Carlo simulation. The sampling method to improve the calculation efficiency was proposed. Two voxel - level dose calculation methods were implemented in this study. The average absorbed dose in vital target organs and the tumor was calculated by the proposed voxel - level dose calculation methods and the traditional MIRD method respectively. The results of the average absorbed dose calculated by the two methods were compared. Based on the voxel - level dose calculation method, the three - dimensional dose distribution in organs and the tumor was obtained and evaluated . Results : The relative difference of average absorbed dose between the two voxel - level dose calculation methods was mostly less than 10%. The sampling method proposed to improve calculation efficiency for the voxel - level dose calculation can decrease the calculation time by ~34% with less deviation. Conclusion : The results confirmed that the voxel - level dose calculation methods proposed in this study allow for more accurate and efficient assessment of the internal radiation dose.","PeriodicalId":48815,"journal":{"name":"International Journal of Radiation Research","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82903566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Computed tomography and clinical features of Ewing's sarcoma/primary neuroectodermal tumors of the kidney: A case report and literature review 肾脏尤因肉瘤/原发性神经外胚层肿瘤的计算机断层扫描及临床特征:1例报告及文献复习

IF 0.6 4区医学

International Journal of Radiation Research Pub Date : 2022-04-01 DOI: 10.52547/ijrr.20.2.37

X. Hu, C. Peng, C. Yang, J. Zheng, P. Wang, Jiong Cai

{"title":"Computed tomography and clinical features of Ewing's sarcoma/primary neuroectodermal tumors of the kidney: A case report and literature review","authors":"X. Hu, C. Peng, C. Yang, J. Zheng, P. Wang, Jiong Cai","doi":"10.52547/ijrr.20.2.37","DOIUrl":"https://doi.org/10.52547/ijrr.20.2.37","url":null,"abstract":"Background : Ewing's sarcoma/primary neuroectodermal tumors (EWs/PNETs) originating in the kidney have been rarely reported. To date, EWs/PNETs have not been demonstrated to have specific clinical characteristics and imaging findings. Case Presentation : A 13-year-old boy was admitted to the hospital with abdominal pain following minor trauma. The patient underwent CT examination on the doctor's recommendation, which revealed contusion of the left kidney and the possibility of a space-occupying lesion in the lower pole of the left kidney. Hence, laparotomy was performed at our hospital, followed by excision of the left kidney, tumor detection and removal of hematoma. The pathological diagnosis was left kidney EWs/PNET with hemorrhagic infarction. Postoperatively, the patient did not receive radiotherapy or chemotherapy. After three months, the patient returned to the hospital for Positron Emission Topography (PET)/CT examination, and no obvious signs of tumor recurrence and metastasis were found all over the body. To date, the patient has been followed-up for 15 months, and remains alive and healthy. Conclusion : EWs/PNETs are highly invasive tumors, with frequent distant metastasis at diagnosis. Hence, early diagnosis and surgical removal of tumor tissue is critical for the prognosis of patients. CT can be used as the primary auxiliary examination of primary renal EWs/PNET. Cystic necrosis is found in the tumor tissue on the CT image. Moreover, cystic necrosis located around the tumor and septal enhancement are observed on the CT enhanced scan, which is helpful for the diagnosis of primary renal EWs/PNET.","PeriodicalId":48815,"journal":{"name":"International Journal of Radiation Research","volume":"147 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88094992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic contrast enhanced MRI Pharmacokinetic parameter histogram analysis in diagnosis of malignant prostatic lesions 动态增强MRI药代动力学参数直方图分析在前列腺恶性病变诊断中的价值

IF 0.6 4区医学

International Journal of Radiation Research Pub Date : 2022-04-01 DOI: 10.52547/ijrr.20.2.34

X. Ma, L.L. Wang, P. Wang, Y. Ma, We.W. Zhang, Jianfeng He, G. Huang, L. Zhao, J. Ren, Z. Shi

{"title":"Dynamic contrast enhanced MRI Pharmacokinetic parameter histogram analysis in diagnosis of malignant prostatic lesions","authors":"X. Ma, L.L. Wang, P. Wang, Y. Ma, We.W. Zhang, Jianfeng He, G. Huang, L. Zhao, J. Ren, Z. Shi","doi":"10.52547/ijrr.20.2.34","DOIUrl":"https://doi.org/10.52547/ijrr.20.2.34","url":null,"abstract":"Background : To differentiate prostate cancer and benignprostatichyperplasia by WAHPP (the whole lesion histogram analysis of the pharmacokineticparameters) of dynamic contrast - enhancedMRI (DCE - MRI). Materials and Methods : Totally 62 patients with elevated prostate specific antigen (PSA) (> 4 ng/ml) were grouped as prostate cancer (PCa) group (n=33) and benign prostatic hyperplasia (BPH) group (n=29) based on transrectal ultrasound (TRUS) - guided random biopsy diagnosis and their WAHPP - K trans (constant is transferred from the blood plasma to the extracellular extravascular (EE) space), K ep (back into blood plasma at a steady rate from EE space), V e (EE volume fraction) and V p (fractional blood plasma volume) were compared. Results : WHAPP shows the 5th percentile and entropy of K trans, 5 th /10 th /25 th /50 th /75 th /90 th /95 th percentiles, mean value and entropy of K ep , 5 th percentile and uniformity of V e , 5 th /10 th /25 th /50 th /75 th percentiles, V p had a considerably greater mean value and entropy in PCa than in BPH (p0.05). The 90th percentile of Kep's maximum AUC (area under the curve) was 0.764, according to receiver operating characteristic (ROC) study, the Youden index 0.5507, the sensitivity 75.76%, and the specificity 79.31%. Conclusion : K trans , K ep , and V e of WHAPP canbe used to quantify prostate DCE - MRI. The 90 th percentile of K ep possibly will be the best indicator for the differential diagnosis of malignant and BPH.","PeriodicalId":48815,"journal":{"name":"International Journal of Radiation Research","volume":"44 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81130039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0