MRI Study of Changes in Blood-Brain/Tumor-Barrier Permeability in Patients With Brain Metastases During and After Radiotherapy
Přehled studie
Postavení
Postavení
Podmínky
Podmínky
Intervence / Léčba
Intervence / Léčba
Typ studie
Typ studie
Zápis (Aktuální)
Zápis
Kontakty a umístění
Studijní místa
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Michigan
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Ann Arbor, Michigan, Spojené státy, 48109
- University of Michigan Hospital
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Kritéria účasti
Kritéria způsobilosti
Kritéria způsobilosti
Věk způsobilý ke studiu
Přijímá zdravé dobrovolníky
Pohlaví způsobilá ke studiu
Metoda odběru vzorků
Studijní populace
Popis
Inclusion Criteria:
- Patients with a histological confirmed malignancy and presence of intraparenchymal brain metastases
- Patients are treated by WBRT, SRS, or FSRT
- Age greater than or equal to 18 years
- A life expectancy of greater than or equal to 8 weeks
- Karnofsky performance status (an assessment of general well being and ability to do activities of daily living; scale ranges from 0 to 100 where 100 is perfect health) greater than or equal to 60
- Informed consent with signed study-specific informed consent form
Exclusion Criteria:
- Major medical or psychiatric illness, which, in the investigator's opinion, will prevent completion of the protocol
- Patients with lepto-meningeal metastases documented by Magnetic Resonance Imagine (MRI), Computed Tomography (CT), or Cerebrospinal Fluid (CSF) evaluation
- For patients that will undergo Whole Brain Radiation Therapy (WBRT), previous WBRT is not allowed. Patients who have had brain metastases managed by Stereotactic Radiosurgery (SRS), Fractionated Stereotactic Radiation Therapy (FSRT), or surgery are eligible
- For patients that will undergo Stereotactic Radiosurgery (SRS), previous Whole Brain Radiation Therapy (WBRT) within 5 months prior to study entry is not allowed. Prior Stereotactic Radiosurgery (SRS), Fractionated Stereotactic Radiation Therapy (FSRT), or surgery is allowed if current treatment will be for a lesion(s) not previously treated.
- For patients that will undergo Fractionated Stereotactic Radiation Therapy (FSRT), previous Whole Brain Radiation Therapy (WBRT) within 5 months prior to study entry is not allowed. Prior Stereotactic Radiosurgery (SRS), Fractionated Stereotactic Radiation Therapy (FSRT), or surgery is allowed if current treatment will be for a lesion(s) not previously treated.
- Patients unable to undergo or tolerate MRI scans (presence of cardiac pacemaker, implanted cardiac defibrillator, aneurysm clips, etc).
- Patients should have no contraindications to having a contrast enhanced Magnetic Resonance Imaging (MRI) scan. These contraindications will be assessed at the time of enrollment using the guidelines set up and in clinical use by the University of Michigan.
- Women who are pregnant are excluded.
Studijní plán
Jak je studie koncipována?
Detaily designu
Počet skupin / kohort
Kohorty a intervence
Skupina / kohortaSkupina / kohorta |
Intervence / LéčbaIntervence / Léčba |
|---|---|
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Stereotactic Radiosurgery (SRS)
Patients with brain metastases receiving single fraction Stereotactic Radiosurgery (SRS). This intervention is not assigned by the investigator. Treatment has been decided prior to study enrollment. MRI scans will be performed approximately 1-2 weeks prior to SRS, and 1-2 weeks and 1 month after SRS. The MRI scan will include a routine clinical MRI series. |
Intervention will not be assigned by the investigator.
Treatment determination will be made prior to study enrollment.
MRI scans will include a routine clinical MRI series.
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Whole Brain Radiation Therapy
Patients with brain metastases receiving fractionated (spread out over time) Whole Brain Radiation Therapy (WBRT). This intervention is not assigned by the investigator. Treatment has been decided prior to study enrollment. MRI scans will be performed approximately 1-2 weeks prior to RT, at the end of RT and 1 month after RT. The MRI scan will include a routine clinical MRI series. |
MRI scans will include a routine clinical MRI series.
Intervention will not be assigned by the investigator.
Treatment determination will be made prior to study enrollment.
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Stereotactic Radiation Therapy
Patients with brain metastases receiving fractionated (spread out over time) Stereotactic Radiation Therapy (FSRT). This intervention is not assigned by the investigator. Treatment has been decided prior to study enrollment. MRI scans will be performed approximately 1-2 weeks prior to FSRT, during the last week of RT but before the last fraction and 1 month after RT. The MRI scan will include a routine clinical MRI series. |
MRI scans will include a routine clinical MRI series.
Intervention will not be assigned by the investigator.
Treatment determination will be made prior to study enrollment.
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Co je měření studie?
Primární výstupní opatření
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
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Percentage of the Gross Tumor Volume With a BTB Opening of Ktrans > 0.005 Min-1
Časové okno: Pre-Treatment, 1-2 Weeks Post Treatment (SRS), 1 Month Post Treatment
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Fifty metastatic lesions from 21 patients received WBRT and 14 lesions from 9 patients treated by SRS were analyzed.
Permeability of BTB (Blood-Tumor-Barrier) was quantified by the transfer constant, Ktrans, derived from dynamic contrast enhanced (DCE)-MRI that were acquired pre, 1-2 weeks after starting, and 1-month post-radiotherapy.
A percentage volume of the BM with Ktrans >0.005 min-1 (%Vall) was used to evaluate the extent of BTB opening pre-RT and subsequent changes after receiving radiotherapy.
The 50 lesions, from the 21 patients treated with Whole Brain Radiation Therapy, were divided into two subgroups: low-leaky (%Vall <50%) and high-leaky, based upon pre-RT measurements.
Of the 50 lesions, 7 were classified as low leaky and 43 were classified as high leaky.
All 14 SRS lesions were classified as high leaky.
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Pre-Treatment, 1-2 Weeks Post Treatment (SRS), 1 Month Post Treatment
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Change in Magnitude and Regional Variability of Blood Tumor Barrier (BTB)/Blood Brain Barrier (BBB) Permeability (Per Minute) in Tumor, Tumor Margin, Normal Brain and Brain Metastases
Časové okno: Week -2 to -1, End of Treatment (WBRT), 1-2 Weeks Post Treatment (SRS), 1 Month Post Treatment
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An in-house program, based on a general kinetic model, along with an MRI contrast agent, Gadopentetic Acid (Gd-DTPA), will be used to estimate vascular permeability (per minute).
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Week -2 to -1, End of Treatment (WBRT), 1-2 Weeks Post Treatment (SRS), 1 Month Post Treatment
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Sekundární výstupní opatření
Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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Change in Mean K^Trans During and After Radiation Therapy
Časové okno: Pre-treatment and 1 Month Post Treatment
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Effect of radiation dose on vascular permeability (per minute) of the Blood Tumor Barrier (BTB)/Blood Brain Barrier (BBB).
Permeability of BTB was quantified by Ktrans.
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Pre-treatment and 1 Month Post Treatment
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Spolupracovníci a vyšetřovatelé
Sponzor
Sponzor
Vyšetřovatelé
Vyšetřovatelé
- Vrchní vyšetřovatel: Yue Cao, Ph.D., University of Michigan Rogel Cancer Center
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia
Začátek studia
Primární dokončení (Aktuální)
Primární dokončení
Dokončení studie (Aktuální)
Dokončení studie
Termíny zápisu do studia
První předloženo
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Odhad)
První zveřejněno
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
Poslední zveřejněná aktualizace
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Naposledy ověřeno
Více informací
Termíny související s touto studií
Další relevantní podmínky MeSH
Další identifikační čísla studie
Další identifikační čísla studie
- UMCC 2005.003
- HUM00043426 (Jiný identifikátor: University of Michigan)
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