<strong>Purpose:</strong><span style="font-family:Verdana;"> This study aims to evaluate the treatment plans of Volumetric-mo</span><span style="font-family:;" "=&qu...<strong>Purpose:</strong><span style="font-family:Verdana;"> This study aims to evaluate the treatment plans of Volumetric-mo</span><span style="font-family:;" "=""><span style="font-family:Verdana;">dulated arc therapy (VMAT) and intensity-modulated radiation therapy (IMRT) techniques for </span><span style="font-family:Verdana;">cervical-thoracic esophageal cancers. </span><b><span style="font-family:Verdana;">Methods</span></b> <b><span style="font-family:Verdana;">and</span></b> <b><span style="font-family:Verdana;">Materials:</span></b><span style="font-family:Verdana;"> Sixty patients were retrospectively identified. Several parameters</span></span><span style="font-family:;" "=""> </span><span style="font-family:;" "=""><span style="font-family:Verdana;">were evaluated based on target conformity and dose-volume histograms of organs at risk (lung, spinal cord, and heart). A phantom for time comparison was also assessed for each plan. </span><b><span style="font-family:Verdana;">Results:</span></b><span style="font-family:Verdana;"> The IMRT plans (5f-IMRT: V95% = </span></span><span style="font-family:Verdana;">99.4 ± 0.3, 7f-IMRT: V95% = 99.8 ± 0.1) results in better PTV coverage than RA plans (Single-arc: V95% = 95.8 ± 3.2, Double-arc: V95% = 95.4 ± 2.3). The target dose conformity of the 5f-IMRT plan was inferior to all plans (CI = 70.4 ± 7.1). The Single-arc plan achieved the best conformity (CI = 72.5 ± 4.6), whereas the Double-arc plan (CI = 72.1 ± 5.1) was slightly inferior to the Single-arc plan but superior to the 7f-IMRT plan (CI = 71.7 ± </span><span style="font-family:Verdana;">8.6). The total MU was reduced by 42.1% in VMAT plan. The average MU needed to deliver the dose of 60 Gy for Single-arc (423.5 ± 52.1 MU) was found to be the least. Similarly, the average MU for the 5f-IMRT, 7f-IMRT and Double-arc were 868.2 ± 182.0 MU, 870.0 ± 225.3 MU and 548.8 ± 47.2 MU, respectively. The delivery time in VMAT plans</span><span style="font-family:Verdana;"> was</span><span style="font-famil展开更多
<strong>Objective:</strong> <span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">DNA copy number alterati...<strong>Objective:</strong> <span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">DNA copy number alterations and difference expression are frequently observed in ovarian cancer. The purpose of this way was to pinpoint gene expression change that w</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">as</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> associated with alterations in DNA copy number and could therefore enlighten some potential oncogenes and stability genes with functional roles in cancers, and investigated the bioinformatics significance for those correlated genes</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">. </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">Method: </span></b></span></span><span><span><span style="font-family:""><span style="font-family:Verdana;">We obtained the DNA copy </span><span style="font-family:Verdana;">number and mRNA expression data from the Cancer Genomic Atlas and</span><span style="font-family:Verdana;"> identified the most statistically significant copy number alteration regions using the GISTIC. Then identified the significance genes between the tumor samples within the copy number alteration regions and analyzed the correlation using a binary matrix. The selected genes were subjected to bio</span><span><span style="font-family:Verdana;">informatics analysis using GSEA tool. </span><b><span style="font-family:Verdana;">Results:</span></b><span style="font-family:Verdana;"> GISTIC analysis results</span></span><span style="font-family:Verdana;"> showed there were 45 significance copy number amplification regions in the ovarian cancer, SAM and Fisher’s exact test found there have 40 genes can affect the expressi展开更多
<strong>Purpose: </strong><span><span style="font-family:""><span style="font-family:Verdana;">Verified the delivered dose distribution of lung cancer Stereotacti...<strong>Purpose: </strong><span><span style="font-family:""><span style="font-family:Verdana;">Verified the delivered dose distribution of lung cancer Stereotactic </span><span><span style="font-family:Verdana;">Body Radiotherapy (SBRT) using the cone-beam CT images. </span><b><span style="font-family:Verdana;">Methods:</span></b></span><b> </b><span style="font-family:Verdana;">Twenty </span><span style="font-family:Verdana;">lung cancer patients </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;">who </span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;">underwent SBRT with 100 CBCT images were</span></span><span><span style="font-family:""> <span style="font-family:Verdana;">enrolled in this study. Delivered dose distributions were recalculated on</span><span style="font-family:Verdana;"> CBCT images with </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;">the </span></span><span><span style="font-family:""><span style="font-family:Verdana;">deformed and non-deformed metho</span><span style="font-family:Verdana;">d</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;">s</span></span><span><span style="font-family:""><span style="font-family:Verdana;">, respectively. The </span><span style="font-family:Verdana;">planned and delivered dose distributions were compared using the</span><span style="font-family:Verdana;"> dose-volume histograms. </span><b><span style="font-family:Verdana;">Results: </span></b><span style="font-family:Verdana;">The delivered target coverage (V100) per patient inside target volume deviated on average were 0.83% ± 0.86% and 1.38% ±</span></span></span><span><span style="font-family:""> </span></span><span><span style="font-family:""><span style="font-family:Verdana;">1.40% for Pct </span><i><span style="font-family:Verdana;">vs</span></i><span style="font-family:Verdana;">. Pcbct and Pct </span><i><span style="font-family:Verdana;">vs</span></展开更多
文摘<strong>Purpose:</strong><span style="font-family:Verdana;"> This study aims to evaluate the treatment plans of Volumetric-mo</span><span style="font-family:;" "=""><span style="font-family:Verdana;">dulated arc therapy (VMAT) and intensity-modulated radiation therapy (IMRT) techniques for </span><span style="font-family:Verdana;">cervical-thoracic esophageal cancers. </span><b><span style="font-family:Verdana;">Methods</span></b> <b><span style="font-family:Verdana;">and</span></b> <b><span style="font-family:Verdana;">Materials:</span></b><span style="font-family:Verdana;"> Sixty patients were retrospectively identified. Several parameters</span></span><span style="font-family:;" "=""> </span><span style="font-family:;" "=""><span style="font-family:Verdana;">were evaluated based on target conformity and dose-volume histograms of organs at risk (lung, spinal cord, and heart). A phantom for time comparison was also assessed for each plan. </span><b><span style="font-family:Verdana;">Results:</span></b><span style="font-family:Verdana;"> The IMRT plans (5f-IMRT: V95% = </span></span><span style="font-family:Verdana;">99.4 ± 0.3, 7f-IMRT: V95% = 99.8 ± 0.1) results in better PTV coverage than RA plans (Single-arc: V95% = 95.8 ± 3.2, Double-arc: V95% = 95.4 ± 2.3). The target dose conformity of the 5f-IMRT plan was inferior to all plans (CI = 70.4 ± 7.1). The Single-arc plan achieved the best conformity (CI = 72.5 ± 4.6), whereas the Double-arc plan (CI = 72.1 ± 5.1) was slightly inferior to the Single-arc plan but superior to the 7f-IMRT plan (CI = 71.7 ± </span><span style="font-family:Verdana;">8.6). The total MU was reduced by 42.1% in VMAT plan. The average MU needed to deliver the dose of 60 Gy for Single-arc (423.5 ± 52.1 MU) was found to be the least. Similarly, the average MU for the 5f-IMRT, 7f-IMRT and Double-arc were 868.2 ± 182.0 MU, 870.0 ± 225.3 MU and 548.8 ± 47.2 MU, respectively. The delivery time in VMAT plans</span><span style="font-family:Verdana;"> was</span><span style="font-famil
文摘<strong>Objective:</strong> <span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">DNA copy number alterations and difference expression are frequently observed in ovarian cancer. The purpose of this way was to pinpoint gene expression change that w</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">as</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> associated with alterations in DNA copy number and could therefore enlighten some potential oncogenes and stability genes with functional roles in cancers, and investigated the bioinformatics significance for those correlated genes</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">. </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">Method: </span></b></span></span><span><span><span style="font-family:""><span style="font-family:Verdana;">We obtained the DNA copy </span><span style="font-family:Verdana;">number and mRNA expression data from the Cancer Genomic Atlas and</span><span style="font-family:Verdana;"> identified the most statistically significant copy number alteration regions using the GISTIC. Then identified the significance genes between the tumor samples within the copy number alteration regions and analyzed the correlation using a binary matrix. The selected genes were subjected to bio</span><span><span style="font-family:Verdana;">informatics analysis using GSEA tool. </span><b><span style="font-family:Verdana;">Results:</span></b><span style="font-family:Verdana;"> GISTIC analysis results</span></span><span style="font-family:Verdana;"> showed there were 45 significance copy number amplification regions in the ovarian cancer, SAM and Fisher’s exact test found there have 40 genes can affect the expressi
