20.500.12556/DiRROS-18667 MRI-assisted cervix cancer brachytherapy pre-planning, based on application in paracervical anaesthesia final report Background. Optimal applicator insertion is a precondition for the success of cervix cancer brachytherapy (BT). We aimed to assess feasibility and efficacy of MRI-assisted pre-planning, based on applicator insertion in para-cervical anaesthesia (PCA). Patients and methods. Five days prior to BT, the pre-planning procedure was performed in 18 cervix cancer patients: tandem-ring applicator was inserted under PCA, pelvic MRI obtained and applicator removed. Procedure tolerability was assessed. High risk clinical target volume (HR CTV) and organs at risk were delineated on the pre-planning MRI, virtual needles placed at optimal positions, and dose planning performed. At BT, insertion was carried out in subarachnoidal anaesthesia according to pre-planned geometry. Pre-planned and actual treatment parameters were compared. Results. Pre-planning procedure was well tolerated. Median difference between the pre-planned and actual needle insertion depth and position were 2 (0%10) mm and 4 (0%30) degrees, respectively. The differences between the pre-planned and actual geometric and dosimetric parameters were statistically non-significant. All actual needles were positioned inside the HR CTV and outside the organs at risk (OAR). Conclusions. Our pre-planning approach is well tolerated and effective. Pre-planned geometry and dose distribution can be reproduced at BT. cervix cancer pre-planning image-guided brachytherapy rak materničnega vratu brahiterapija slikovno vodena brahiterapija magnetnoresonančno slikanje MRI vnaprejšnje načrtovanje true false true Association of Radiology and Oncology Ljubljana Angleški jezik Slovenski jezik by Authors Neznano 2024-04-11 12:43:13 2024-04-11 12:43:13 2024-04-12 03:37:21 0000-00-00 00:00:00 2014 0 0 str. 293-300 no. 3 Vol. 48 Sep. 2014 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2014-09-01 618.146-006:615.849 1318-2099 10.2478/raon-2014-0009 1853819 http://www.degruyter.com/view/j/raon.2014.48.issue-3/raon-2014-0009/raon-2014-0009.xml?format=INT 1 88bf33cd-f7df-11ee-ae20-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=25501 RAZ_Petric_Primoz_2014.pdf RAZ_Petric_Primoz_2014.pdf 1 1371E1940179B141C4E5EBE45DDCFDDD 9001c2d571cc9fe7f1b207adcfdaa9a46fe33695260f979f37486685a26eecd0 dd6f669b-f7df-11ee-ae20-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=25502 Onkološki inštitut Ljubljana 0 0 0