Neoplasms

Urinary Tract, Sexual Organs, and Pregnancy Conditions

All Conditions

Urinary Bladder Neoplasms

Urologic Neoplasms

Urinary Bladder Diseases

Urogenital Neoplasms

Urogenital Diseases

Female Urogenital Diseases

Pregnancy Complications

Female Urogenital Diseases and Pregnancy Complications

Urologic Diseases

Male Urogenital Diseases

Fiducial marker placement \& cystogram during resection surgery, followed by radiation planning CT scan, mpMRI, chemo-radiation treatment; mpMRI and/or surveillance cystoscopy at 3, 6, and 9 months post-treatment.

placement of 24k gold fiducial markers surrounding the tumor site, at time of primary or re-staging bladder tumor resection

Fiducial marker placement

In this study, mp-MRI is defined as MRI that includes T1 \& T2 weighted sequences, diffusion weighted sequences, and Dynamic contrast enhanced (DCE) MRI sequences.

Multiparametric MRI (mpMRI)

Laura Sarmiento, CCRP

Jackie Hernandez, CCRP

Sarah Stec

Maurice Garcia, MD

The purpose of this study is to examine the usefulness of implanting small 24-K gold fiducial markers around a bladder tumor site, so that a Radiation Oncologist can identify the original tumor location at the time of radiation treatment. Other goals of the study include assessing whether a new MRI imaging technology can help with detection of bladder cancer earlier and more accurately when evidence of bladder cancer is not visible by scope.

This study of fiducial markers in patients with localized muscle-invasive bladder cancer will enroll patients electing bladder preservation with tri-modal therapy.

24-K gold fiducial markers will be endoscopically implanted around the tumor resection area to mark the location of the tumor site, into the bladder wall submucosa space under direct visualization via a coaxial needle. The markers are visible on all imaging modalities, including all available on-table imaging (e.g., portal and cone-beam CT) used for radiotherapy. Reliable fiducial marker placement within the bladder may have the potential to advance bladder-sparing management of localized muscle-invasive bladder cancer.

This study will examine the effectiveness of bladder-preserving multi-modal treatment of muscle-invasive bladder cancer with and without fiducial marker placement to guide radiotherapy targeting and to minimize collateral radiation. In addition, this study intends to verify the accuracy and report on the sensitivity and specificity of mp-MRI imaging to detect the presence and location of bladder cancer.

Bladder Fiducial Markers and Multiparametric-MRI (Mp-MRI) to Optimize Bladder Chemo-radiotherapy

Change in bladder volumes targeted for high dose radiation (HDR) between the first (Baseline) dose volume histogram (DVH) without the fiducial markers present, compared to the second DVH made after placement of the fiducial markers

comparison of a DVH (Dose Volume Histogram) made without the fiducial markers present, to the second DVH made with the fiducial markers present. This will be measured by net dose (Gy to area and/or volume) to collateral organs

percentage of actual positive sites among those predicted positive by mpMRI

Difference in "on-table" patient alignment under the radiotherapy gantry (in millimeters, in X, Y and Z dimensions) when the patient is aligned daily based on conventional methods only (i.e. fiducial markers are not used for alignment), and when the patient is aligned based on the fiducial markers as the reference.

National Cancer Institute (NCI)

Cedars-Sinai Medical Center

Principal Investigator

Prostatic Neoplasms

Genital Neoplasms, Male

Genital Diseases

Genital Diseases, Male

Prostatic Diseases

Placement of fidicual markers under MRI guidance for localization of radiaiton treatment

Kevin A Camphausen, M.D.

To effectively treat prostate cancer, doctors need an accurate view (via X-rays) of the prostate gland during radiation therapy. To help improve this view, doctors may insert gold markers called fiducials into the prostate by placing hollow gold needles through the rectum and moving a fiducial through each needle. The purpose of the study is to determine whether an MRI scan can help doctors improve their placement of these needles.

Fifteen men will participate in this study. Patients will take the antibiotic levofloxacin for two days prior to the placement of the fiducials, then will have a small enema and another dose of the antibiotic on the morning of the procedure. After being anesthetized, patients will have an antenna-like tube placed into the rectum and have MRI images taken of the area. The doctor will then use these scans to place four fiducials into the prostate. The procedure will require approximately 45 minutes. Patients will be allowed to go home the same day of the procedure, which will be followed by a seven-week course of standard radiation therapy.

Prior to their participation in this study, patients will undergo the following evaluations: a physical exam, blood work, urine tests, and, if appropriate, an MRI or bone scan.

Effective image-guided prostate therapies require excellent visualization of the prostate and surrounding anatomy, such that cancerous tissue can be treated while avoiding nearby neural and vascular structures. As such, Magnetic Resonance Imaging is well suited for image-guidance because of its excellent soft tissue contrast, multiplanar capabilities, and the potential to yield spectral/biological tumor mapping. Despite the potential for MRI-guided prostate therapies, there are currently no techniques that allow for precise trans-rectal intraprostatic needle placement in patients.

In this pilot study we seek to validate the accuracy and tolerability of a new system and technique that allows for accurate placement of needles within the prostate based upon MR images. The method is very similar to transrectal ultrasound guided biopsy of the prostate, except that it is applicable within a closed high-field MRI scanner. Four gold fiducial markers will be placed within the prostate under needle guidance in a series of patients with localized prostate cancer before external beam radiotherapy. Fifteen patients will be enrolled onto this study with sample size determined to obtain reasonably precise estimates of mean placement accuracy. The accrual period is expected to be less than a year.

While placement of the fiducial markers has no direct therapeutic benefit for the patient, intraprostatic radiopaque fiducial markers (placed under ultrasound) have shown value in assessing daily setup errors and off-line organ motion during external beam radiation therapy for prostate cancer. Therefore, a secondary objective is to gain experience using these intraprostatic fiducial markers for daily assessment and adjustment of external radiation beam targeting. These markers can also be utilized to aid in CT-MRI fusion and results in better target delineation for treatment planning. In this way, prostate cancer patients who are receiving external-beam radiation therapy may benefit from participation.

Using Fiducial Markers to Aid in Prostate Cancer Radiation Treatment

Trans-Rectal Placement of Prostatic Fiducial Markers Under MR-Guidance in Patients Receiving External Beam Radiotherapy for Prostate Cancer: A Pilot Study

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Bladder Fiducial Markers and Multiparametric-MRI (Mp-MRI) to Optimize Bladder Chemo-radiotherapy	NCT04442724	Bladder Cancer Urinary Bladder... Urologic Neopla... Neoplasms Urinary Bladder...	Fiducial marker... Multiparametric...	18 Years -	Cedars-Sinai Medical Center
Using Fiducial Markers to Aid in Prostate Cancer Radiation Treatment	NCT00061347	Prostate Cancer Cancer	Fiducial marker...	18 Years - 90 Years	National Institutes of Health Clinical Center (CC)

Spots Global Cancer Trial Database for fiducial marker placement