Physica Medica-European Journal of Medical Physics最新文献_第2页

SC13.06 INTERNATIONAL COMPARISON OF VMAT TREATMENT PLANS FOR A CHALLENGING CASE OF WHOLE BREAST WITH AXILLARY, SUPRACLAVICULAR AND INTRAMAMMARY LYMPH NODES AND A SIMULTANEOUS INTEGRATED BOOST SC13.06 对带有腋窝、锁骨上和乳腺内淋巴结的全乳腺挑战性病例以及同时综合增强的 Vmat 治疗方案进行国际比较

IF 3.3 3区医学

Physica Medica-European Journal of Medical Physics Pub Date : 2024-09-01 DOI: 10.1016/j.ejmp.2024.103480

引用次数: 0

SC03.02 MOTION DEPENDENCE OF MAGNETIC RESONANCE THERMOMETRY PRECISION DURING DEEP-REGIONAL HYPERTHERMIA TREATMENT IN THE PELVIS AND EXTREMITIES SC03.02 骨盆和四肢深区域热疗期间磁共振温度测量精度的运动依赖性

IF 3.3 3区医学

Physica Medica-European Journal of Medical Physics Pub Date : 2024-09-01 DOI: 10.1016/j.ejmp.2024.103441

引用次数: 0

SC08.02 A BIOKINETIC MODEL FOR RADON IN PREGNANCY sc08.02 妊娠期氡的生物动力学模型

IF 3.3 3区医学

Physica Medica-European Journal of Medical Physics Pub Date : 2024-09-01 DOI: 10.1016/j.ejmp.2024.103462

引用次数: 0

SC05.06 STATISTICAL PROCESS CONTROL ANALYSIS GUIDES ADAPTIVE RADIOTHERAPY DECISIONS IN NASOPHARYNGEAL CARCINOMA PATIENTS SC05.06 统计过程控制分析指导鼻咽癌患者的适应性放疗决策

IF 3.3 3区医学

Physica Medica-European Journal of Medical Physics Pub Date : 2024-09-01 DOI: 10.1016/j.ejmp.2024.103451

引用次数: 0

SC01.03 BLOOD DOSE AND CORRELATIONS WITH CLINICAL OUTCOMES IN BRAIN AND HEAD-AND-NECK CANCER sc01.03 脑癌和头颈癌的血液剂量及其与临床结果的相关性

IF 3.3 3区医学

Physica Medica-European Journal of Medical Physics Pub Date : 2024-09-01 DOI: 10.1016/j.ejmp.2024.103436

引用次数: 0

SC07.02 SINGLE-SITE REPRODUCIBILITY IN PULSEQ-DESIGNED MR FINGERPRINTING SEQUENCES SC07.02 脉冲q设计的MR指纹序列的单点重现性

IF 3.3 3区医学

Physica Medica-European Journal of Medical Physics Pub Date : 2024-09-01 DOI: 10.1016/j.ejmp.2024.103457

引用次数: 0

SC17.05 PREDICTIVE DOSIMETRIC AND CLINICAL PARAMETERS FOR CLINICAL OUTCOMES IN SINGLE-ISOCENTER LINAC-BASED RADIOSURGERY FOR SINGLE AND MULTIPLE BRAIN METASTASES SC17.05 单中心直列加速器放射外科治疗单发和多发脑转移瘤临床结果的预测剂量学和临床参数

IF 3.3 3区医学

Physica Medica-European Journal of Medical Physics Pub Date : 2024-09-01 DOI: 10.1016/j.ejmp.2024.103491

引用次数: 0

SC07.03 QUANTITATIVE ANALYSIS OF RADIOMIC FEATURES IN mMRI FOR PROSTATE CANCER CHARACTERIZATION SC07.03 用于诊断前列腺癌的 mMRI 放射特征定量分析

IF 3.3 3区医学

Physica Medica-European Journal of Medical Physics Pub Date : 2024-09-01 DOI: 10.1016/j.ejmp.2024.103458

引用次数: 0

Feasibility of the analytical dose calculation method for Au-198 brachytherapy 金-198 近距离放射治疗剂量分析计算方法的可行性

IF 3.3 3区医学

Physica Medica-European Journal of Medical Physics Pub Date : 2024-09-01 DOI: 10.1016/j.ejmp.2024.104501

{"title":"Feasibility of the analytical dose calculation method for Au-198 brachytherapy","authors":"","doi":"10.1016/j.ejmp.2024.104501","DOIUrl":"10.1016/j.ejmp.2024.104501","url":null,"abstract":"<div><h3>Purpose</h3><p>A dose calculation algorithm Computed Tomography (CT)-based analytical dose calculation method (CT<sub>anly</sub>), which can correct for subject inhomogeneity and size-dependent scatter doses, was applied to the <sup>198</sup>Au seed. In this study, we evaluated the effectiveness of the CT<sub>anly</sub> method by comparing the gold standard Monte Carlo (MC) method and the conventional TG43 method on two virtual phantoms and patient CT images simulating oral cancer.</p></div><div><h3>Methods</h3><p>As virtual phantoms, a water phantom and a heterogeneous phantom with soft tissue inserted cubic fat, lung, and bone were used. A 2-mm-thick lead plate was also inserted into the heterogeneous phantom as a dose attenuator. Virtual <sup>198</sup>Au seeds and a 2-mm-thick lead plate were placed on the patient CT images. Dose distributions obtained via the TG43 and CT<sub>anly</sub> methods were compared with those of the MC by gamma analysis with 2%/2-mm thresholds. The computation durations were also compared.</p></div><div><h3>Results</h3><p>In the water phantom, dose distributions comparable to those obtained via the MC method were obtained regardless of the algorithm. For the inhomogeneity phantom and patient case, the CT<sub>anly</sub> method showed an improvement in the gamma passing rate and dose distributions similar to those of the MC method were obtained. The computation time, which was days with the MC method, was reduced to minutes with the CT<sub>anly</sub> method.</p></div><div><h3>Conclusions</h3><p>The CT<sub>anly</sub> method is effective for <sup>198</sup>Au seed dose calculations and takes a shorter time to obtain the dose distributions than the MC method.</p></div>","PeriodicalId":56092,"journal":{"name":"Physica Medica-European Journal of Medical Physics","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1120179724002461/pdfft?md5=1085468ddc0be672af09430479818c3a&pid=1-s2.0-S1120179724002461-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142097568","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}

引用次数: 0

Analysis of intra-fractional positioning correction performed by cone beam computed tomography in SBRT treatments 锥形束计算机断层扫描在 SBRT 治疗中进行的点内定位校正分析

IF 3.3 3区医学

Physica Medica-European Journal of Medical Physics Pub Date : 2024-09-01 DOI: 10.1016/j.ejmp.2024.104502

{"title":"Analysis of intra-fractional positioning correction performed by cone beam computed tomography in SBRT treatments","authors":"","doi":"10.1016/j.ejmp.2024.104502","DOIUrl":"10.1016/j.ejmp.2024.104502","url":null,"abstract":"<div><h3>Purpose</h3><p>This study aims to evaluate the positioning correction extracted from Intra-fraction Cone Beam (IF-CBCT) images obtained during Stereotactic Body Radiotherapy (SBRT) treatments, and to assess whether its magnitude justifies its acquisition. In addition, the results obtained in lung, liver, and pancreas SBRTs with two deep inspiration breath-hold systems (DIBH), and for prostate with/without ultrasound (US) monitoring were compared.</p></div><div><h3>Methods</h3><p>1449 treatments, performed with two linear accelerators (LINACs) were retrospectively analyzed. DIBH were performed either with a spirometry-based device or a surface-guidance system and one LINAC was equipped with US monitoring system for prostate. Significance tests were used to account for differences between units.</p></div><div><h3>Results</h3><p><em>G</em>roup systematic error (M) was approximately –0.7 mm for DIBH treatments in superior-inferior (SI) direction with no difference (p > 0.7) between LINACs. Moreover, there was a SI difference of 0.5 mm for prostate treatments (p = 0.008), in favor of the US monitored one. In anterior-posterior (AP) direction, only liver treatments exhibited differences between LINACs, with the spirometer-based system being 0.8 mm inferior (p = 0.003). M<0.4 mm in left–right (LR) direction was found for all locations and LINACs. The spirometer-based system resulted in lower standard deviation of systematic and random errors in most components and locations, with a greater effect observed in liver SBRTs.</p></div><div><h3>Conclusions</h3><p>The corrections made with IF-CBCT during SBRT treatments were not negligible. Both DIBH systems were effective in managing respiratory movements. However, the spirometry-based system was slightly more accurate. In addition, US monitoring of the prostate appeared to be useful in reducing target shift.</p></div>","PeriodicalId":56092,"journal":{"name":"Physica Medica-European Journal of Medical Physics","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142097570","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}

引用次数: 0