AIMS: To determine the clinical target volume (CTV) to planning target volume (PTV) margins required for bladder coverage when using skin or bony or soft tissue matching on a daily basis. MATERIALS AND METHODS: Twenty-seven patients with T2-T4 transitional cell carcinoma of the bladder were treated with daily online adaptive image-guided radiotherapy using cone beam computed tomography. All daily CTVs were contoured by a single observer. A retrospective comparison of coverage of the bladder CTV using skin, bone and soft tissue matching was conducted. RESULTS: With the skin set-up, bladder CTV coverage with a margin of 0.5, 1.0, 1.5, 2.0 and 2.5 cm was 0, 19, 56, 93 and 96%, respectively. For the daily set-up based on bone, the respective coverage was 0, 41, 63, 89 and 96%. For soft tissue set-up based on the geometric centre of the bladder, coverage was 52, 89, 96, 100 and 100%, respectively. CONCLUSIONS: Based on coverage of the CTV, the required CTV to PTV margins are smaller for the daily online soft tissue set-up compared with skin or bone.
AIMS: To determine the clinical target volume (CTV) to planning target volume (PTV) margins required for bladder coverage when using skin or bony or soft tissue matching on a daily basis. MATERIALS AND METHODS: Twenty-seven patients with T2-T4 transitional cell carcinoma of the bladder were treated with daily online adaptive image-guided radiotherapy using cone beam computed tomography. All daily CTVs were contoured by a single observer. A retrospective comparison of coverage of the bladder CTV using skin, bone and soft tissue matching was conducted. RESULTS: With the skin set-up, bladder CTV coverage with a margin of 0.5, 1.0, 1.5, 2.0 and 2.5 cm was 0, 19, 56, 93 and 96%, respectively. For the daily set-up based on bone, the respective coverage was 0, 41, 63, 89 and 96%. For soft tissue set-up based on the geometric centre of the bladder, coverage was 52, 89, 96, 100 and 100%, respectively. CONCLUSIONS: Based on coverage of the CTV, the required CTV to PTV margins are smaller for the daily online soft tissue set-up compared with skin or bone.
Authors: Timur Mitin; William U Shipley; Jason A Efstathiou; Niall M Heney; Donald S Kaufman; Richard J Lee; Anthony L Zietman Journal: Curr Urol Rep Date: 2013-04 Impact factor: 3.092
Authors: Adham Hijab; Boris Tocco; Ian Hanson; Hanneke Meijer; Christina Junker Nyborg; Anders Smedegaard Bertelsen; Robert Jan Smeenk; Gillian Smith; Jeff Michalski; Brian C Baumann; Shaista Hafeez Journal: Front Oncol Date: 2021-02-25 Impact factor: 6.244
Authors: H Abdel-Aty; K Warren-Oseni; S Bagherzadeh-Akbari; V N Hansen; K Jones; V Harris; M P Tan; D Mcquaid; H A McNair; R Huddart; A Dunlop; S Hafeez Journal: Clin Oncol (R Coll Radiol) Date: 2022-06-09 Impact factor: 4.925
Authors: Kathleene Dower; Andriana Ford; Michael Sandford; Andrew Doherty; Stuart Greenham; Luke Kerin; Patrick Dwyer; Carmen Hansen; Justin Westhuyzen; Thomas Shakespeare Journal: J Med Radiat Sci Date: 2021-07-20