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Shear Wave Ultrasound Elastography in Noninvasive Diagnosis of Thyroid Nodules

26. maj 2015 opdateret af: Manjiri Dighe, University of Washington

Efficacy of Shear Wave Ultrasound Elastography in Noninvasive Diagnosis of Thyroid Nodules

Shear wave ultrasound elastography is a new technique of finding the softness or hardness in tissue by applying a "push" generated by the machine. This technique will help in diagnosing malignancy in the thyroid gland without biopsy and avoiding biopsy in noncancerous nodules.

Studieoversigt

Status

Ukendt

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Thyroid nodules are a common medical problem. With the wide use of various imaging modalities, incidentally detected thyroid nodules are becoming more common. However most of these nodules are benign with only a small proportion of 5-10% being malignant. With the increasing number of nodules detected, evaluation of these thyroid nodules presents a diagnostic challenge since the imaging modality used for evaluation at present, i.e., ultrasound (US) alone, has a low specificity of approximately 50-70%. In order to improve specificity to confidently diagnose malignancy in the thyroid nodule, a fine needle aspiration (FNA) biopsy is performed.

In recent years, US elastography has been shown to have high specificity of 90- 98% in various studies in differentiating between benign and malignant nodules. US elastography works on the principle of detecting the stiffness within a tissue by applying compression which can be manual compression or by generation of a remote radiation force by focused ultrasonic beams called as shear waves. Shear Wave Ultrasound (SWUS) elastography is an objective method of US elastography that detects the stiffness within the nodule since the strength of the shear wave generated is known and can be controlled. SWUS elastography has shown promise in being able to noninvasively diagnose papillary carcinoma in previous studies involving preoperative patients.

The investigators propose to perform a study to investigate the efficacy of SWUS elastography in diagnosing malignant thyroid nodules and noninvasively decreasing the number of FNAs performed by avoiding FNA in benign nodules. The Investigators will enroll patients with thyroid nodules before they undergo FNA biopsy or surgery. We also propose to compare routine US and SWUS elastography and their combined use in differentiating malignant from benign nodules. The investigators hypothesize that SWUS elastography can be used as a noninvasive screening tool, prior to an FNA, to screen out benign and malignant nodules with high level of confidence and reduce the number of biopsies in the future.

Undersøgelsestype

Interventionel

Tilmelding (Forventet)

175

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

    • Washington
      • Seattle, Washington, Forenede Stater, 98195
        • University of Washington Medical Center

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

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Clinical diagnosis of thyroid nodule
  • Referred for thyroid FNA or surgery

Exclusion Criteria:

  • Minors; age <18
  • Unable 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

  • Primært formål: Diagnostisk
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: SWUS Elastography
This is a noninvasive technique using focused ultrasonic beams (pushing beams.) Several pushing beams at increasing depths are transmitted to generate a quasi-plane shear wave frame that propagates throughout the imaging area. After generating the shear wave, an ultrafast imaging sequence is performed to acquire successive raw radiofrequency dots at a very high frame rate (up to 20,000 per second). A tissue elasticity assessment can be derived from shear wave propagation speed. A color-coded image is displayed; softer tissue in blue and stiffer tissue in red. Quantitative information is delivered by drawing regions of interest on the thyroid and surrounding tissues which is the Elasticity Index expressed in kilo-Pascal (kPa). Due to the lack of manual compression and known value of the strength of pushing beam, SWUS gives an objective number to stiffness within the nodule.
Andre navne:
  • Aixplorer Ultrasound System (SuperSonic Imagine, Inc)

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Correlating stiffness from the SWUS elastography with indentometer and pathology findings
Tidsramme: Up to 2 months. A one-time SWUS elastography will be performed on Day 1 within 2 months prior to the patients scheduled clinical FNA or surgery.

SWUS elastography can provide an objective score of stiffness, i.e., the Elasticity Index.

Stiffness from the SWUS elastography will be correlated with the elasticity measured with an indentometer to validate the Elasticity Index. The Elasticity Index will also be correlated with the histopathologic diagnosis. The sensitivity and specificity of the method for the diagnosis of malignancy will be assessed.

Up to 2 months. A one-time SWUS elastography will be performed on Day 1 within 2 months prior to the patients scheduled clinical FNA or surgery.

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Correlating SWUS findings with routine US findings
Tidsramme: Up to 2 months. A one-time SWUS elastography will be performed on Day 1 within 2 months prior to the patients scheduled clinical FNA or surgery.
The investigators will compare the SWUS findings to the routine US findings. This will help us develop criteria based on combined findings to decide if a thyroid nodule is suspicious enough to warrant a FNA biopsy. These criteria can then be used for future prospective studies.
Up to 2 months. A one-time SWUS elastography will be performed on Day 1 within 2 months prior to the patients scheduled clinical FNA or surgery.

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Samarbejdspartnere

Efterforskere

  • Ledende efterforsker: Manjiri K. Dighe, MD, University of Washington

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

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. november 2012

Primær færdiggørelse (Forventet)

1. juli 2015

Studieafslutning (Forventet)

1. august 2015

Datoer for studieregistrering

Først indsendt

12. december 2012

Først indsendt, der opfyldte QC-kriterier

21. december 2012

Først opslået (Skøn)

31. december 2012

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

28. maj 2015

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

26. maj 2015

Sidst verificeret

1. maj 2015

Mere information

Begreber relateret til denne undersøgelse

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 .

Kliniske forsøg med Thyroid Nodule

Kliniske forsøg med SWUS Elastography

Abonner