- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT03339531
Optimized 2D-RT for Prostate Cancer
12. mars 2018 oppdatert av: 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.
Studieoversikt
Studietype
Intervensjonell
Registrering (Faktiske)
20
Fase
- Ikke aktuelt
Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
18 år til 79 år (Voksen, Eldre voksen)
Tar imot friske frivillige
Nei
Kjønn som er kvalifisert for studier
Mann
Beskrivelse
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
Studieplan
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Behandling
- Tildeling: N/A
- Intervensjonsmodell: Enkeltgruppeoppdrag
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
---|---|
Eksperimentell: 2D radiotherapy
Patients with prostate cancer were treated with 2D-radiotherapy
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
---|---|---|
new indications for 2D fields definition
Tidsramme: 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
|
Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Etterforskere
- Studieleder: Alessio G Morganti, MD, Radiation Oncology Center, Department of Experimental, Diagnostic and Speciality Medicine-DIMES, Unversity of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart (Faktiske)
2. februar 2015
Primær fullføring (Faktiske)
18. desember 2015
Studiet fullført (Faktiske)
18. desember 2015
Datoer for studieregistrering
Først innsendt
3. november 2017
Først innsendt som oppfylte QC-kriteriene
9. november 2017
Først lagt ut (Faktiske)
13. november 2017
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
13. mars 2018
Siste oppdatering sendt inn som oppfylte QC-kriteriene
12. mars 2018
Sist bekreftet
1. mars 2018
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- 2D-RT in prostate cancer
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
NEI
Legemiddel- og utstyrsinformasjon, studiedokumenter
Studerer et amerikansk FDA-regulert medikamentprodukt
Nei
Studerer et amerikansk FDA-regulert enhetsprodukt
Nei
Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .
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