Báo cáo khoa học: "Intensity modulated radiation therapy (IMRT): differences in target volumes and improvement in clinically relevant doses to small bowel in rectal carcinoma" pps

... Open Access Intensity modulated radiation therapy (IMRT): differences in target volumes and improvement in clinically relevant doses to small bowel in rectal carcinoma Henry Mok 1 , Christopher H ... et al.: Intensity modulated radiation therapy (IMRT): differences in target volumes and improvement in clinically relevant dos...

Ngày tải lên: 09/08/2014, 09:20

... (blue line). f3DCRT: modificated tridimensional conformal radiotherapy (pink line). IMRT: intensity modulated radiation therapy (green line). Table 2 Homogeneity and Conformity Index of Target Volumes HI ... McCabe M, et al: Acute small bowel toxicity and preoperative chemoradiotherapy for rectal cancer: investigating dose-volume relationships and role for inverse planni...

Ngày tải lên: 09/08/2014, 08:22

... prescription doses of 46 Gy, 50.4 Gy and 54 Gy to the pelvic target volume; doses to the prostate and seminal vesicles were identical to plan-PO. The risk of rectal, bladder and small bowel toxicity ... Corresponding author Abstract Background: To evaluate the risk of rectal, bladder and small bowel toxicity in intensity modulated radiation therapy (I...

Ngày tải lên: 09/08/2014, 09:22

... difference in the exten- sion of the target volumes and in the overlap between targets and OARs. As an example, in our investigation 1-1.5 cm of rim of kidneys and liver have been included in the target ... carcinoma in complete surgical remission after induction chemotherapy: a randomized, controlled, clinical trial comparing whole abdominal radiotherapy, chemotherapy,...

Ngày tải lên: 09/08/2014, 09:20

... definitely to at least 74 Gy, nine post high dose brachytherapy (HDR) to 50.4Gy and 13 post prostatectomy to at least 64Gy. All radiotherapy courses were completed with no breaks. Acute rectal toxicity ... y the radiation oncologist to perfor m contouring, plan acceptance and to see the patients in follow up; the costs of the different linear accelerators (as all new moder...

Ngày tải lên: 09/08/2014, 09:21

... comparison of intensity -modulated radiation therapy and concomitant boost radiotherapy in the setting of concurrent chemotherapy for locally advanced oropharyngeal carcinoma. Int J Radiat ... head and neck MRI and/ or CT. Bone scan was con- ducted according to the clinical symptoms. Positron Emission Tomography was not routinely used for staging purpose. The information of...

Ngày tải lên: 09/08/2014, 08:23

... obligatorally. Target volumes and organs at risk According to the recommendations of the International Commission on Radiation Units and Measurements Reports (ICRU) 50 and 62, target volumes and ... given to the spar- ing of small bowel. Inverse planning input parameters are shown in table 1. Constraints were applied as starting parameters and changed individually...

Ngày tải lên: 09/08/2014, 09:20

... (3%). Thesewerelategrade3-4gastrointestinaleventscom- prised of colitis, ileus and bleeding. Finally, for the benefits in local control rates to trans- late into improvements in survival will require further improvements in ... IV and one not other- wise specified ; two involv ing head and uncinate process, 1 Stage II and 1 Stage III; one involving head and body, Stage III;...

Ngày tải lên: 09/08/2014, 09:20

... regarding the distribution of dose to organs at risk see table 3. Regular follow-up examinations took place in our institution or in the referring centers including at least clinical examination and ... photons using an integrated motorized multileaf collimator (MLC) for the step -and- shoot technique automatically delivering the sequences. Thetotaldoseswereprescribedtothemedianofthe...

Ngày tải lên: 09/08/2014, 09:20

... performed both in Europe and in the United States to explore ways to refine the use of RT in that setting: a Danish study found equivalence between 27 Gy in 3 fractions and 40 Gy in 5 fractions, and an RTOG ... Gy in 20 fractions and 32 Gy in 4 fractions in terms of response rate [6,7]. More recently, high sin gle doses of radiation delivered during stereotacti...

Ngày tải lên: 09/08/2014, 09:20