Visualization Tool for Investigation of Breast Lesions
27. juli 2011 opdateret af: Sunnybrook Health Sciences Centre
Evaluation of a New Multi-modality Visualization Tool for Investigation of Breast Lesions
Magnetic resonance imaging (MRI) is commonly used for the detection of breast lesions in genetically high-risk women due to its high sensitivity.
As non-cancerous conditions including normal changes due to a woman's menstrual cycle may have the appearance of cancer on MR images, a biopsy (generally performed under ultrasound-guidance) of the suspicious mass is required for definitive diagnosis.
However, only a limited percentage of MRI-visible lesions are also visible on ultrasound (US).
Even if found, it is often unclear whether the lesion identified on US corresponds to the MRI-detected lesion in question.
The investigators have developed a visualization tool to assist the visualization of MRI-detected lesions in US-guided procedures (e.g., biopsy).
This tool provides a simultaneous display of the previously acquired MRI data alongside real-time US images.
The investigators propose a pilot study to assess the usefulness of this tool in identifying MRI-detected lesions using real-time US-guidance.
Studieoversigt
Status
Afsluttet
Betingelser
Undersøgelsestype
Observationel
Tilmelding (Forventet)
10
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
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Ontario
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Toronto, Ontario, Canada, M4N 3M5
- Sunnybrook Health Sciences Centre
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Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
21 år til 80 år (Voksen, Ældre voksen)
Tager imod sunde frivillige
Ingen
Køn, der er berettiget til at studere
Kvinde
Prøveudtagningsmetode
Ikke-sandsynlighedsprøve
Studiebefolkning
Patients clinically suspicious for breast cancer will undergo the standard bilateral MRI protocol, with the patient in the prone position and both breasts immobilized. Patients with a BIRADS reading of 4 or 5 based on the initial MRI are called back for a second-look US examination to determine if the lesion can be found using US imaging. If the lesion is occult to US during this second-look examination, the radiologist may recommend a follow-up high-resolution unilateral MRI to further characterize the lesion.
For this feasibility study, 10 patients with MRI-identified lesions that cannot be visualized under the second-look ultrasound examination, and who will undergo the recommended unilateral MRI follow-up will be asked to participate in our research study.
Beskrivelse
Inclusion Criteria:
- Patients with MRI-identified lesions that cannot be visualized under the second-look ultrasound examination, and who will undergo the recommended unilateral MRI follow-up.
Exclusion Criteria:
- US-visible lesion.
- Any contraindications to MRI (e.g., pacemakers, metal implants).
- Any contraindications to US imaging.
- Pregnancy.
- Claustrophobia.
- Inability to lie still for 45 minutes-1 hour.
- In excess of 250 pounds.
- Incapability to provide informed consent.
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Kohorter og interventioner
Gruppe / kohorte |
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Pilot group
Real-time US imaging with simultaneous display of dynamically corresponding MR images (from a previous MRI screening) will be used to re-locate the lesion previously reported as occult under a second-look ultrasound screening.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Tidsramme |
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Target identification success: this outcome measure is a 'yes/no' outcome, indicating whether or not an MRI-detected lesion could be successfully visualized using US-guidance in the supplemental US exam
Tidsramme: Time of examination
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Time of examination
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Sekundære resultatmål
Resultatmål |
Tidsramme |
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Confidence scale for lesion visualization This is a 5-point scale: 1 - very low confidence; 2 - low confidence; 3 - ambiguous; 4 - confident; 5 - very confident
Tidsramme: Time of examination
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Time of examination
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Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Efterforskere
- Ledende efterforsker: Petrina Causer, MD, Sunnybrook Health Sciences Center
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart
1. juli 2009
Primær færdiggørelse (Faktiske)
1. juli 2010
Studieafslutning (Faktiske)
1. juli 2011
Datoer for studieregistrering
Først indsendt
6. juli 2009
Først indsendt, der opfyldte QC-kriterier
7. juli 2009
Først opslået (Skøn)
8. juli 2009
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
28. juli 2011
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
27. juli 2011
Sidst verificeret
1. juli 2011
Mere information
Begreber relateret til denne undersøgelse
Andre undersøgelses-id-numre
- 049-2009
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .