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3T Magnetic Resonance Spectroscopic Imaging (MSRI) scan performed with an air-filled endorectal coil (AIR-MRSI).

AIR-MRSI

3T Magnetic Resonance Spectroscopic Imaging (MSRI) scan performed with a perfluorocarbon compound (PFC)-filled endorectal coil (PFC-MRSI).

PFC-MRSI

Haesun Choi, MD

The objective of this study is to evaluate the feasibility of 3T magnetic resonance spectroscopic imaging (MRSI) of the prostate in improving the spectral resolution, using a perfluorocarbon compound (PFC)-filled endorectal coil.

Specific Aim 1: To compare the spectral quality, measured in Hz (linewidth), of 3T MRSI performed with an air-filled endorectal coil (AIR-MRSI) and a PFC-filled endorectal coil (PFC-MRSI).

Specific Aim 2: To compare the quality of spectra of PFC-MRSI by grading the overall quality of MRSI data of each patient subjectively as being "excellent," "good," "fair," "poor," and "non-diagnostic," based on the status of subjective spectral resolution of Cho, Cr and Po peaks, signal to noise ratio (SNR), baseline distortion, and fat contamination.

MRSI is a type of magnetic resonance imaging (MRI) that uses the same type of scanner as a standard MRI. Unlike standard MRI, which takes pictures of the anatomy (body regions), MRSI takes pictures of the metabolic features of the body. Prostate cancer tissue has certain differences in its metabolism (chemical makeup) that are not seen in normal tissue. MRSI is used to detect prostate tumors by measuring the metabolic features, and an endorectal (inside of the rectum) coil is used. The coil is like an antenna.

Endorectal coils inflated with air are commonly used to detect prostate tumors and measure the status of the disease using a 1.5T (lower-powered, standard clinical) scanner. However, the accuracy of endorectal MRSI scanning still needs improvement. Researchers want to find out if the quality of endorectal MRSI scanning can be improved by using a stronger (3T) scanner and/or using PFC in the endorectal coil instead of air. PFC is a clear and odorless liquid that is known to be virtually non-toxic to the human body. It has been used as an oral contrast (swallowed by mouth) for standard MRIs. As opposed to air, PFC is physically very similar to prostate tissue, which may improve the quality of the MRSI images.

If you agree to take part in this study, you will have 2 endorectal MRSI studies (one with air and one with PFC). The MRSI study with air is diagnostic and considered standard of care, and the MRSI study with PFC is investigational. Before being inserted into your rectum, the coil will be filled with air in order to test for any leakage. You will lie on one side, inside of a 3T MRI scanner, and the coil (covered with protective latex) will be inserted into your rectum. Having the coil inserted is similar to having an enema tip inserted. The coil will be filled with air, and you will lie on your back so the first MRSI study can be completed. The study doctor will carefully check the coil to be sure it is centered at the right place to cover the entire prostate.

After the first MRSI study is completed, the air will be removed using a syringe. The coil will then be filled with PFC, and the second MRSI study will be repeated in the same manner. Once both studies are completed, the coil will be removed after the PFC is removed from the coil. There will be no direct contact between the air or PFC within the coil and your body. In total, the 2 MRSI studies should take about 60 minutes.

After the MRSI studies are completed, researchers will study the information with a special computer to compare the technical quality of the 2 sets of MRSIs. Your participation in this study will be over. Your doctor will receive a report of your diagnostic exam (the MRSI study with air).

This is an investigational study. 3T scanners and the software for routine MRI used for this study are FDA-approved. The use of air in the endorectal coil is a standard procedure. MRSI/MRI equipment for a 1.5T scanner is commercially available and FDA-approved for routine clinical care. PFC used for this study and the software for MRSI acquisition at a 3T scanner have not been FDA-approved. Up to 20 patients will take part in this study. All will be enrolled at M. D. Anderson.

3T Endorectal Magnetic Resonance Spectroscopic Imaging (MRSI) of Prostate

Feasibility Study of 3T Endorectal Magnetic Resonance Spectroscopic Imaging (MRSI) of Prostate

Comparison of each linewidths (measured in Hz) between two modalities: endorectal magnetic resonance spectroscopy imaging (MRSI) of prostate using "3 Tesla (3T)" scanner with 1) perfluorocarbon compound (PFC) within endorectal coil versus 2) air.

The quality of PFC-MRSI and AIR-MRSI will be graded subjectively as being "excellent," "good," "fair," "poor," and "non-diagnostic," based on the status of subjective spectral resolution of Cho, Cr, Po, and Ci peaks, signal-noise-ratio (SNR), baseline distortion, and fat and seminal vesicle contaminations.

M.D. Anderson Cancer Center

3T Magnetic Resonance Spectroscopic Imaging

Part 1 of Study = One MRSI exam with an air-filled endorectal coil (AIR-MRSI) and one with a PFC-filled endorectal coil (PFC-MRSI); Part 2 of Study = MRSI exam with PFC using an endorectal coil only.

Objectives:

The objectives of this study are to: 1) evaluate the feasibility of 3T MRSI of prostate in improving the spectral resolution, using a PFC-filled endorectal coil, 2) develop a systematic metabolic grading system for tumor detection by identifying the abnormal peak areas of Cho, Cr, Po, and Ci for the prostate carcinoma, specifically from PFC-filled endorectal 3T MRSI, and 3) evaluate the efficacy of the metabolic grading system in tumor detection.

The long-term goal of the study is to provide an early prognostic indicator and means of monitoring the biologic status of the prostate cancer during the course of the disease.

Part 1:

Prostate cancer tissue has certain differences in its metabolism (chemical makeup) that are not seen in normal tissue. MRSI is a type of magnetic resonance imaging (MRI) that uses the same type of scanner as a standard MRI. Unlike standard MRI, which takes pictures of the body regions, MRSI shows the metabolic features of the prostate cells. MRSI exams that use a "coil" behind the prostate (inside of the rectum) have been used to measure the metabolic features of prostate cancer tissue. This has been shown to improve the accuracy of finding prostate tumor using standard scanners called "1.5T" scanners.

The coil works like an antenna, and air is normally used inside the coil to inflate it. The accuracy of endorectal MRSI exams still needs improvement. Use of PFC instead of air inside of the coil has been shown to greatly improve the quality of MRSI images at 1.5T scanners. At first, researchers want to learn if the newer, stronger (3T) scanners will improve the quality of endorectal MRSI exam when combined with PFC within the coil. PFC is a clear and odorless liquid that, as opposed to air, is physically very similar to human tissue (such as prostate tissue). This makes the MRSI images much clearer.

If you agree to take part in this study (Part 1) and are found to be eligible, you will have 2 MRSI exams (one with air and one with PFC) using an endorectal coil.

Before being inserted, the coil will be inflated with air to check for a possible leak. You will lie on one side, inside of a 3T MRI scanner, and the coil (covered with protective nonlatex or latex) will be inserted into your rectum. Having the coil inserted is similar to having an enema tip inserted. The coil will be filled with air, and you will lie on your back so the first MRSI exam can be completed. Once the first MRSI exam is completed, as much of the air as possible will be removed from the coil using a syringe.

The coil will then be filled with PFC, and the second MRSI exam will be repeated in the same manner. At the end of the exam, the PFC will be removed in the same manner, and then the coil will be removed from the rectum. There will be no direct contact between the PFC or air inside the coil and your body. In total, the 2 MRSI studies should take about 60 minutes.

You will have a prostatectomy (surgical removal of the prostate) within 3 months of having the MRSI exams performed. After the operation, your participation in this study will be over.

Part 2:

Prostate cancer tissue has certain differences in its metabolism (chemical makeup) that are not seen in normal tissue. MRSI is a type of magnetic resonance imaging (MRI) that uses the same type of scanner as a standard MRI. Unlike standard MRI, which takes pictures of the anatomy (body regions), MRSI shows the metabolic features of the prostate. MRSI exams that use a "coil" behind the prostate (inside of the rectum) have been used to measure the metabolic features of prostate cancer tissue. This has been shown to improve the accuracy of prostate tumor detection at standard scanners called "1.5T" scanners.

The coil works like an antenna, and air is normally used inside the coil to inflate it. The accuracy of endorectal MRSI exams still needs improvement. Use of PFC instead of air inside of the coil has been shown to greatly improve the quality of MRSI images at 1.5T scanners. At first, researchers want to learn if the newer, stronger (3T) scanners will improve the quality of endorectal MRSI exam when combined with PFC within the coil. PFC is a clear and odorless liquid that, as opposed to air, is physically very similar to human tissue (such as prostate tissue). This makes the MRSI images much clearer.

If you agree to take part in this study (Part 2) and are found to be eligible, you will have an MRSI exam with PFC using an endorectal coil. Only PFC will be used.

Before being inserted, the coil will be inflated with air to check for a possible leak, and as much as possible of the air will be removed. You will lie on one side, inside of a 3T MRI scanner, and the coil (covered with protective nonlatex or latex) will be inserted into your rectum. Having the coil inserted is similar to having an enema tip inserted. The coil will be filled with PFC, and you will lie on your back so the MRSI exam can be completed. Once the exam is completed, the PFC will be removed from the coil using a syringe and then the coil will be removed from the rectum. There will be no direct contact between the PFC inside the coil and your body. The procedure should take about 30 minutes.

You will have a prostatectomy (surgical removal of the prostate) within 3 months of having the MRSI exam performed. After the operation, your participation in this study will be over.

3T Perfluorocarbon-Filled Endorectal Magnetic Resonance Spectroscopic Imaging of Prostate

The outcome variable for comparing linewidths between the two modalities is paired differences of measurements taken from the same patients. A paired t-test is used to test for a 50% decrease in the mean linewidth as measured by PFC-MRSI versus AIR-MRSI.

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization
3T Endorectal Magnetic Resonance Spectroscopic Imaging (MRSI) of Prostate	NCT00429338	Prostate Cancer	AIR-MRSI PFC-MRSI	18 Years -	M.D. Anderson Cancer Center
3T Endorectal Magnetic Resonance Spectroscopic Imaging (MRSI) of Prostate	NCT00429338	Prostate Cancer	AIR-MRSI PFC-MRSI	18 Years -	M.D. Anderson Cancer Center
3T Endorectal Magnetic Resonance Spectroscopic Imaging (MRSI) of Prostate	NCT00429338	Prostate Cancer	AIR-MRSI PFC-MRSI	18 Years -	M.D. Anderson Cancer Center
3T Perfluorocarbon-Filled Endorectal Magnetic Resonance Spectroscopic Imaging of Prostate	NCT00464724	Prostate Cancer	3T Magnetic Res...	18 Years -	M.D. Anderson Cancer Center

Spots Global Cancer Trial Database for 3 tesla

Every month we try and update this database with for 3 tesla cancer trials from around the world to help patients and their families find trials that might be right for them.
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Spots Global Cancer Trial Database for 3 tesla

Every month we try and update this database with for 3 tesla cancer trials from around the world to help patients and their families find trials that might be right for them. We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.

Every month we try and update this database with for 3 tesla cancer trials from around the world to help patients and their families find trials that might be right for them.
We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.