- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03339531
Optimized 2D-RT for Prostate Cancer
March 12, 2018 updated by: Alessio Giuseppe Morganti, IRCCS Azienda Ospedaliero-Universitaria di Bologna
Definition of Fields Margins for Optimized 2D Radiotherapy of Prostate Carcinoma
Prostate cancer (CAP) is one of the most common malignancies in men, both in Western countries and developing countries.
Radiation therapy (RT) is an important therapeutic option.
New technologies (3D, IMRT, IGRT, VMAT) have been introduced in the last decades, with a progressive improvement of clinical outcome.
However, in many countries the only treatment option is the traditional 2D technique based on standard simulation.
The indications for field definition in this treatment are still based on expert's opinions.
The aim of this analysis is to propose new indications for 2D fields definition based on three-dimensional simulation in a population of patients with CAP.
Twenty patients with CAP consecutively treated with RT in our center were identified.
Patients underwent CT-simulation in supine position.
Pelvic MRI images were fused with CT-simulation images.
In this way, delineation of the prostate and seminal vesicles was performed on MRI images.
Clinical Target Volume definition (CTV) was performed according to EORTC guidelines simulating 4 different categories: low-risk CAP, intermediate-risk CAP, high-risk CAP without involvement of the seminal vesicles, and high-risk CAP with involvement of seminal vesicles.
The Planning Target Volume (PTV) was defined by adding a margin of 10 mm to the CTV in all directions.
For each patient, 8 treatment plans were calculated.
In particular, for each of the 4 categories of risk, 2 treatment plans were calculated by using a cobalt source or 10 MV photons.
Treatment plans were calculated using the box technique.
Progressive optimization was realized with an iterative procedure by evaluating the three-dimensional dose distribution.
Once the final plan was achieved (respecting the PTV constraint: D98 > 95%), distances of the fields edges from a set of reference points were measured.
Study Overview
Study Type
Interventional
Enrollment (Actual)
20
Phase
- Not Applicable
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 79 years (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
Male
Description
Inclusion Criteria:
- > 18 years
- clinical T stage: cT2b, cT2c, cT3a, cT3b
- informed consent
- MRI of the pelvis
Exclusion Criteria:
- > 79 years
- prior surgery treatment for prostate cancer
- prior pelvic radiotherapy
- genetic syndromes of hyper-radio-sensitivity
- chronic infiammatory bowel disease
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: 2D radiotherapy
Patients with prostate cancer were treated with 2D-radiotherapy
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
new indications for 2D fields definition
Time Frame: through study completion, up to 10 months
|
Twenty patients with prostate cancer (CAP) were identified.
Pelvic MRI images were fused with CT-simulation images to delineate prostate and seminal vesicles on MRI images.
Clinical Target Volume definition (CTV) was performed according to EORTC guidelines simulating 4 different categories: low-risk CAP, intermediate-risk CAP, high-risk CAP with or without involvement of the seminal vesicles.
The Planning Target Volume (PTV) was defined by adding a margin of 10 mm to the CTV.
For each patient, 8 treatment plans were calculated using box tecnhique: 2 treatment plans for each risk category were calculated by using a cobalt source or 10 MV photons.
Progressive optimization was realized with an iterative procedure by evaluating the three-dimensional dose distribution.
Once the final plan was achieved (respecting the PTV constraint: D98 > 95%), distances of the fields edges from a set of reference points were measured.
|
through study completion, up to 10 months
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Study Director: Alessio G Morganti, MD, Radiation Oncology Center, Department of Experimental, Diagnostic and Speciality Medicine-DIMES, Unversity of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
February 2, 2015
Primary Completion (Actual)
December 18, 2015
Study Completion (Actual)
December 18, 2015
Study Registration Dates
First Submitted
November 3, 2017
First Submitted That Met QC Criteria
November 9, 2017
First Posted (Actual)
November 13, 2017
Study Record Updates
Last Update Posted (Actual)
March 13, 2018
Last Update Submitted That Met QC Criteria
March 12, 2018
Last Verified
March 1, 2018
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2D-RT in prostate cancer
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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