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Sabater S, Pastor-Juan MR, Andres I, López-Martinez L, Lopez-Honrubia V, Tercero-Azorin MI, Sevillano M, Lozano-Setien E, Jimenez-Jimenez E, Berenguer R, Rovirosa A, Castro-Larefors S, Magdalena Marti-Laosa M, Roche O, Martinez-Terol F, Arenas M. MRI prostate contouring is not impaired by the use of a radiotherapy image acquisition set-up. An intra- and inter-observer paired comparative analysis with diagnostic set-up images. Cancer Radiother 2021; 25:107-113. [PMID: 33423967 DOI: 10.1016/j.canrad.2020.05.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 04/09/2020] [Accepted: 05/14/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE The use of MRI for radiotherapy planning purposes is growing but image acquisition using radiotherapy set-ups has impaired image quality. Whether differences in image acquisition set-up could modify organ contouring has not been evaluated. Therefore, we aimed to evaluate differences in contouring between paired of image sets that were acquired in the same scanning session using different parameters. MATERIAL AND METHODS Ten patients underwent RT treatment planning with MRI co-registration. MRI was carried out using two different set-ups during the same session, MRI radiotherapy set-ups and MRI diagnostic set-ups. Prostates and rectums were retrospectively contoured in both image sets by 5 radiation oncologists and 4 radiologists. Intra-observer analysis was carried out comparing organ volumes, the Dice coefficient and hausdorff distance values between two contouring rounds. Inter-observer analysis was carried out by comparing individual contours to a generated STAPLE consensus contour, which is considered the gold standard reference. RESULTS No significant differences were observed between MRI acquisition set-ups. Significant differences were observed for the dice and hausdorff parameters, comparing individual contours to the STAPLE consensus contour, when analysing diagnostic images between rounds, although raw values were similar. CONCLUSION Prostate and rectum contours did not differ significantly when using diagnostic or radiotherapy MRI acquisition set-ups.
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Affiliation(s)
- S Sabater
- Department of radiation oncology, Complejo hospitalario universitario de Albacete (CHUA), C/Hnos Falcó 37, 02006 Albacete, Spain.
| | - M R Pastor-Juan
- Department of radiology, Complejo hospitalario universitario de Albacete (CHUA), Albacete, Spain
| | - I Andres
- Department of radiation oncology, Complejo hospitalario universitario de Albacete (CHUA), C/Hnos Falcó 37, 02006 Albacete, Spain
| | - L López-Martinez
- Department of radiology, Complejo hospitalario universitario de Albacete (CHUA), Albacete, Spain
| | - V Lopez-Honrubia
- Department of radiation oncology, Complejo hospitalario universitario de Albacete (CHUA), C/Hnos Falcó 37, 02006 Albacete, Spain
| | - M I Tercero-Azorin
- Department of radiology, Complejo hospitalario universitario de Albacete (CHUA), Albacete, Spain
| | - M Sevillano
- Department of radiation oncology, Complejo hospitalario universitario de Albacete (CHUA), C/Hnos Falcó 37, 02006 Albacete, Spain
| | - E Lozano-Setien
- Department of radiology, Complejo hospitalario universitario de Albacete (CHUA), Albacete, Spain
| | - E Jimenez-Jimenez
- Department of radiation oncology, hospital universitario Santa Lucia, Cartagena, Spain
| | - R Berenguer
- Department of radiation oncology, Complejo hospitalario universitario de Albacete (CHUA), C/Hnos Falcó 37, 02006 Albacete, Spain
| | - A Rovirosa
- Gynecological cancer unit, radiation oncology department, ICMHO, IDIBAPS, university of Barcelona, hospital clinic, Barcelona, Spain
| | - S Castro-Larefors
- Department of radiation oncology, Complejo hospitalario universitario de Albacete (CHUA), C/Hnos Falcó 37, 02006 Albacete, Spain
| | - M Magdalena Marti-Laosa
- Department of radiation oncology, Complejo hospitalario universitario de Albacete (CHUA), C/Hnos Falcó 37, 02006 Albacete, Spain
| | - O Roche
- Laboratorio de oncología, unidad de medicina molecular, unidad asociada de biomedicina UCLM, unidad asociada al CSIC, centro regional de investigaciones biomédicas, universidad de Castilla-La Mancha, Albacete, Spain; Departamento de ciencias médicas, facultad de medicina de Albacete, universidad de Castilla-La Mancha, Albacete, Spain
| | - F Martinez-Terol
- Complejo hospitalario universitario de Albacete (CHUA), Albacete, Spain
| | - M Arenas
- Department of radiation oncology, hospital universitari Sant Joan, Reus, Spain
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Duffton A, Li W, Forde E. The Pivotal Role of the Therapeutic Radiographer/Radiation Therapist in Image-guided Radiotherapy Research and Development. Clin Oncol (R Coll Radiol) 2020; 32:852-860. [PMID: 33087296 DOI: 10.1016/j.clon.2020.09.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 08/21/2020] [Accepted: 09/22/2020] [Indexed: 12/24/2022]
Abstract
The ability to personalise radiotherapy to fit the individual patient and their diagnosis has been realised through technological advancements. There is now more opportunity to utilise these technologies and deliver precision radiotherapy for more patients. Image-guided radiotherapy (IGRT) has enabled users to safely and accurately plan, treat and verify complex cases; and deliver a high dose to the target volume, while minimising dose to normal tissue. Rapid changes in IGRT have required a multidisciplinary team (MDT) approach, carefully deciding optimum protocols to achieve clinical benefit. Therapeutic radiographer/radiation therapists (RTTs) play a pivotal role in this MDT. There is already a great deal of evidence that illustrates the contribution of RTTs in IGRT development; implementation; quality assurance; and maintaining training and competency programmes. Often this has required the RTT to undertake additional roles and responsibilities. These publications show how the profession has evolved, expanding the scope of practice. There are now more opportunities for RTT-led IGRT research. This is not only undertaken in the more traditional aspects of practice, but in recent times, more RTTs are becoming involved in imaging biomarkers research and radiomic analysis. The aim of this overview is to describe the RTT contribution to the ongoing development of IGRT and to showcase some of the profession's involvement in IGRT research.
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Affiliation(s)
- A Duffton
- Department of Radiotherapy, Beatson West of Scotland Cancer Centre, Glasgow, UK.
| | - W Li
- University of Toronto, Toronto, Ontario, Canada; Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - E Forde
- Applied Radiation Therapy Trinity, Discipline of Radiation Therapy, Trinity College Dublin, The University of Dublin, Dublin, Ireland
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