- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00590252
Clinical Testing of New MR Pulse Sequences
Study Overview
Status
Detailed Description
Magnetic resonance (MR) scanners use computer software, called pulse sequences, to extract different types of information from the human body. Though MR has largely matured to become a routine clinical imaging modality, substantial development is still underway in order to fully exploit the technology. BWH Radiology has been a leader in pulse sequence development and the protocol under review has played a large part in this development over the last several years.
The importance of further development in MR cannot be understated. In particular, biochemical information, detailed properties of water diffusion and perfusion in tissue, cardiac imaging, and high-resolution brain imaging, all hold great potential for improving medical diagnosis and monitoring.
MR pulse sequence software is typically developed in small incremental steps. For example, an investigator may receive a new state of the art sequence from the manufacturer of the scanner equipment. (S)he may then decide to add flow-sensitizing gradients. This process is not straightforward, but requires extensive testing, first in phantoms and then in-vivo, to determine if the pulse sequence is capable of performing the new task and, moreover, to see if the new feature does not introduce undesired artifacts.
Some modifications, like the introduction diffusion-sensitizing gradients, must be tested in patients, since changes of tissue diffusion can only be observed in stroke victims. Once the researcher attained the first goal, (s)he may proceed with other modifications, e.g., modifications which will improve the temporal resolution. The completion of a new sequence, which ultimately may be used in a large normal subject or patient study, may involve a large number of design steps, where each step must be tested in one or a few subjects before development proceeds. Another scenario is the application of an existing patient protocol to different, existing, and FDA approved equipment. For example the need may arise to use a different radiofrequency coil (surface coil instead of head coil) or a scanner system with different magnetic field strength (3.0 Tesla instead of 1.5 Tesla). Several parameters, such as signal-to-noise ratio, or T1 and T2 weighting may change under such circumstances. In most cases only a study in a subject will reveal if protocol parameter settings are adequate. Therefore, this protocol is different from a conventional study, where exactly the same protocol will be applied to each of a large number of subjects. However, the protocol and the general procedures of data handling used during the different scans is similar enough, so it can be summarized into a general development protocol.
The purpose of this protocol is to test and validate newly developed MR pulse sequences.
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Contact
- Name: Frank J Rybicki, MD, PhD
- Phone Number: 617-732-7206
- Email: frybicki@partners.org
Study Locations
-
-
Massachusetts
-
Boston, Massachusetts, United States, 02115
- Recruiting
- Brigham and Women's Hospital
-
Contact:
- Frank J Rybicki, MD, PhD
- Phone Number: 617-732-7206
- Email: frybicki@partners.org
-
Sub-Investigator:
- Jill M Goldstein, PhD
-
Sub-Investigator:
- Hiroto Hatabu, MD, PhD
-
Sub-Investigator:
- Ference Jolesz, MD
-
Sub-Investigator:
- Marek R Kubicki, MD
-
Sub-Investigator:
- Bruno Madore, MD
-
Sub-Investigator:
- Nathan J McDannold, PhD
-
Sub-Investigator:
- Dimitrios Mitsouras, PhD
-
Sub-Investigator:
- Lawrence Panych, PhD
-
Sub-Investigator:
- Eva Gombos, MD
-
Sub-Investigator:
- Clare Tempany-Afdhal, MD
-
Sub-Investigator:
- Gary P Zientara, PhD
-
Sub-Investigator:
- Ehud Schmidt, PhD
-
Sub-Investigator:
- Nehal Shah, MD
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Healthy volunteers
- Patients undergoing clinical indicated MRI
Exclusion Criteria:
- Patients with contraindication for MRI
- Pregnant women will be excluded from this study
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Only
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
---|
Scheduled for an MRI
Clinically Indicated Adults
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Frank J Rybicki, MD, PhD, Brigham and Women's Hospital
Publications and helpful links
General Publications
- Mulkern RV, Barnes AS, Haker SJ, Hung YP, Rybicki FJ, Maier SE, Tempany CM. Biexponential characterization of prostate tissue water diffusion decay curves over an extended b-factor range. Magn Reson Imaging. 2006 Jun;24(5):563-8. doi: 10.1016/j.mri.2005.12.008. Epub 2006 Feb 20.
- Ersoy H, Goldhaber SZ, Cai T, Luu T, Rosebrook J, Mulkern R, Rybicki F. Time-resolved MR angiography: a primary screening examination of patients with suspected pulmonary embolism and contraindications to administration of iodinated contrast material. AJR Am J Roentgenol. 2007 May;188(5):1246-54. doi: 10.2214/AJR.06.0901.
- McDannold N, Barnes AS, Rybicki FJ, Oshio K, Chen NK, Hynynen K, Mulkern RV. Temperature mapping considerations in the breast with line scan echo planar spectroscopic imaging. Magn Reson Med. 2007 Dec;58(6):1117-23. doi: 10.1002/mrm.21322.
Study record dates
Study Major Dates
Study Start
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- 2001-P-000545
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.
Clinical Trials on The Focus of This Study Are New Pulse Sequences.
-
University Hospital, GasthuisbergCompletedthe Focus of This Study is to Measure the Intra- and Interobserver Agreement for the Evaluation of Early Stage EmbryosBelgium
-
Philips HealthcareUniversity Hospitals Cleveland Medical Center; Case Western Reserve University and other collaboratorsCompletedFocus of Study is Imaging Performance With the New Technology Compared With the Currently Available Technology.United States
-
University Hospital, Gentofte, CopenhagenUniversity of CopenhagenUnknownThe Focus of This Study is to Evaluete the Significances of the Vagal Cholinerg Nervuos System for the Effect of GLP-1 by Using Atropin Administration.Denmark
-
University of Sao Paulo General HospitalUnknownThere Are no Specific Conditions Under Study | This Study Evaluates the Clinical Decision-Making Associated With Intensive Care Units Rationing
-
Heba A YassaEnrolling by invitationthe Study Focus on the Uses of Telephone and Other New Technology in Medicine, Diagnosis and TreatmentEgypt
-
Jinnah Sindh Medical UniversityAl Khidmat Hospital Nazimabad Karachi; Medics Laboratories (Pvt.) Ltd.CompletedThe Main Focus of This Study is to Evaluate the Safety of Zingiber Officinale L. Tablets as Hypolipidemic Agent in Hypertensive PatientsPakistan
-
University of FoggiaCompletedThe Focus of Study is to Elucidate Which Are the Factors Requiring the Duodenostomy and Which Postoperative Course is for These PatientsItaly
-
University of AberdeenLipton Teas and InfusionsRecruitingThe Focus of the Study is Healthy VolunteersUnited Kingdom
-
PuratosUniversidad de GranadaCompleted
-
University of Wisconsin, MadisonNational Cancer Institute (NCI); National Institutes of Health (NIH)CompletedFocus of the Study: Normal VolunteersUnited States