ArticleRadiation oncology (London, England)2019
The urethral position may shift due to urethral catheter placement in the treatment planning for prostate radiation therapy.
Article in Radiation oncology (London, England), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.
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Who cites it
17 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.
- State of the art and future challenges of urethra-sparing stereotactic body radiotherapy for prostate cancer: a systematic review of literature.World journal of urology · 2023Pooled it
- Automatic segmentation of the urethra and prostate zones with deep learning on T2-weighted magnetic resonance imaging.Physics and imaging in radiation oncology · 2026Article
- PURE-MRI: An international study assessing physician accuracy in delineating the prostate and urethra on prostate MRI.Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology · 2026Article
- Enhanced urethral identification for radiotherapy planning using fat-suppressed 3D T2-weighted magnetic resonance imaging.Radiological physics and technology · 2025Article
- Associations of dose to the urethra and long-term patient-reported outcomes after radiotherapy with EBRT and HDR brachytherapy boost for prostate cancer.Clinical and translational radiation oncology · 2025Article
- Development of deep learning-based novel auto-segmentation for the prostatic urethra on planning CT images for prostate cancer radiotherapy.Radiological physics and technology · 2024Article
- Developing and validating a simple urethra surrogate model to facilitate dosimetric analysis to predict genitourinary toxicity.Clinical and translational radiation oncology · 2024Article
- Urethra contouring on computed tomography urethrogram versus magnetic resonance imaging for stereotactic body radiotherapy in prostate cancer.Clinical and translational radiation oncology · 2024Article
- Impact of technological advances in treatment planning, image guidance, and treatment delivery on target margin design for prostate cancer radiotherapy: an updated review.The British journal of radiology · 2024Review
- Urethral identification using three-dimensional magnetic resonance imaging and interfraction urethral motion evaluation for prostate stereotactic body radiotherapy.Nagoya journal of medical science · 2023Article
- The use of a thin guide-wire for urethral definition in prostate SBRT treatments with Cyberknife.Journal of applied clinical medical physics · 2023Article
- Article
- Development of a 3D CNN-based AI Model for Automated Segmentation of the Prostatic Urethra.Academic radiology · 2022Article
- Urethral Interfractional Geometric and Dosimetric Variations of Prostate Cancer Patients: A Study Using an Onboard MRI.Frontiers in oncology · 2022Article
- A treatment planning study of urethra-sparing intensity-modulated proton therapy for localized prostate cancer.Physics and imaging in radiation oncology · 2021Article
- Evaluation of T2-Weighted MRI for Visualization and Sparing of Urethra with MR-Guided Radiation Therapy (MRgRT) On-Board MRI.Cancers · 2021Article
- Visualizing the urethra by magnetic resonance imaging without usage of a catheter for radiotherapy of prostate cancer.Physics and imaging in radiation oncology · 2021Article
Corrections and comments
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Authors and funding
13 authors at 4 institutions in 1 country.
Funding
Abstract
purposeTo determine the best method to contour the planning organ at risk volume (PRV) for the urethra, this study aimed to investigate the displacement of a Foley catheter in the urethra with a soft and thin guide-wire.
methodsFor each patient, the study used two sets of computed tomography (CT) images for radiation treatment planning (RT-CT): (1) set with a Foley urethral catheter (4.0 mm diameter) plus a guide-wire (0.46 mm diameter) in the first RT-CT and (2) set with a guide-wire alone in the second CT recorded 2 min after the first RT-CT. Using three fiducial markers in the prostate for image fusion, the displacement between the catheter and the guide-wire in the prostatic urethra was calculated. In 155 consecutive patients treated between 2011 and 2017, 5531 slices of RT-CT were evaluated.
resultsAssuming that ≥3.0 mm of difference between the catheter and the guide-wire position was a significant displacement, the urethra with the catheter was displaced significantly from the urethra with the guide-wire alone in > 20% of the RT-CT slices in 23.2% (36/155) of the patients. The number of patients who showed ≥3.0 mm anterior displacement with the catheter in ≥20% RT-CT slices was significantly larger at the superior segment (38/155) than at the middle (14/155) and inferior segments (18/155) of the prostatic urethra (p < 0.0167).
conclusionsThe urethral position with a Foley catheter is different from the urethral position with a thin and soft guide-wire in a significant proportion of the patients. This should be taken into account for the PRV of the urethra to ensure precise radiotherapy such as in urethra-sparing radiotherapy.
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