Reducing Radioisotope Dose: the Half-Dose CZT Study
4. september 2019 oppdatert av: S.M.Chang, MD
Reducing Radioisotope Dose in Regadenoson SPECT Myocardial Perfusion Imaging: Comparison of Half-Dose Scans Using a Novel Solid-State-Detector Dedicated Cardiac Camera to Full Dose Scans Acquired On Standard Equipment
This is a pilot study to see whether cardiac imaging can be performed using half the standard dose of radioisotope.
Studieoversikt
Status
Fullført
Forhold
Intervensjon / Behandling
Detaljert beskrivelse
The aim of this study is to compare the image quality of the half radioisotope dose scans obtained using a CZT (cadmium zinc telluride) camera with scans acquired using a standard of care imaging protocol/radioisotope dose performed on a traditional (conventional) camera.
The proposed strategy of a half dose/extended time protocol with the CZT camera should yield a similar count activity and consequently image quality equivalent to that detected by a conventional SPECT system.
Studietype
Intervensjonell
Registrering (Faktiske)
74
Fase
- Ikke aktuelt
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiesteder
-
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Texas
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Houston, Texas, Forente stater, 77030
- Houston Methodist Hospital
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Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
18 år til 90 år (Voksen, Eldre voksen)
Tar imot friske frivillige
Nei
Kjønn som er kvalifisert for studier
Alle
Beskrivelse
Inclusion Criteria:
- ≥ 18 years of age and referred for a clinically-indicated stress SPECT MPI study
- suspected or known coronary artery disease
- written informed consent
Exclusion Criteria:
- Evidence of a normal baseline scan after at least 50% of the protocol acquired baseline scans have been interpreted as being normal
- Participation in another investigational study within the preceding month
- Pregnant and/or breast-feeding female
- ECG evidence of left bundle branch block or paced rhythm
- Evidence of non-ischemic cardiomyopathy
- Presence of hypertrophic cardiomyopathy and/or severe valvular heart disease
- Severe claustrophobia or inability to lie flat for 20 minutes (the anticipated amount of time to complete the procedure)
- Known allergy to technetium-99m
- Potential contraindications to regadenoson use, due to severe lung disease; severe bradycardia (heart rate < 40 beats/min); second- or third degree atrioventricular heart block; sick sinus syndrome; long QT syndrome; severe hypotension; or decompensated heart failure.
Studieplan
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Diagnostisk
- Tildeling: N/A
- Intervensjonsmodell: Enkeltgruppeoppdrag
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
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Annen: Half-dose isotope for NuclearStressTest
Intervention is Nuclear stress test of the heart.
Single-arm of this study "Half-dose of isotope for Nuclear stress test" is group of study subjects who will do Research Nuclear stress test with half-dose of isotope that normally used for routine Nuclear stress test.
Isotope is the tracer CZT (cadmium zinc telluride) that used for Nuclear stress test routinely to see the function of arteries of the heart.
Patients with suspected Coronary Artery Disease who meet entry criteria undergo a research nuclear stress test using a decreased dose of isotope, using a new camera.
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Half-dose of tracer or radioisotope will be used for Nuclear stress test of the heart.
This is imaging test of the heart to see the function of arteries of the heart.
Andre navn:
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Hva måler studien?
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Image quality of the half-dose CZT versus full dose scans
Tidsramme: 1 Week
|
1 Week
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Sekundære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Total radiation dose/exposure of the half-dose CZT vs. full dose scans
Tidsramme: 1 Week
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1 Week
|
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Total myocardial count activity and count rates obtained during each scan
Tidsramme: 1 Week
|
1 Week
|
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Agreement between the half-dose CZT vs. full dose scans on the presence and extent of fixed or reversible defects on a per-patient and vessel basis
Tidsramme: 1 Week
|
1 Week
|
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Agreement between the half-dose vs. full dose scans on gated data such as EF, left ventricular (LV) end-diastolic volume, LV end-systolic volume
Tidsramme: 1 Week
|
1 Week
|
Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Sponsor
Samarbeidspartnere
Etterforskere
- Hovedetterforsker: Su Min Chang, MD, The Methodist Hospital Research Institute
Publikasjoner og nyttige lenker
Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.
Generelle publikasjoner
- Henzlova MJ, Cerqueira MD, Mahmarian JJ, Yao SS; Quality Assurance Committee of the American Society of Nuclear Cardiology. Stress protocols and tracers. J Nucl Cardiol. 2006 Nov;13(6):e80-90. doi: 10.1016/j.nuclcard.2006.08.011. No abstract available.
- Einstein AJ, Moser KW, Thompson RC, Cerqueira MD, Henzlova MJ. Radiation dose to patients from cardiac diagnostic imaging. Circulation. 2007 Sep 11;116(11):1290-305. doi: 10.1161/CIRCULATIONAHA.107.688101. No abstract available.
- Fazel R, Krumholz HM, Wang Y, Ross JS, Chen J, Ting HH, Shah ND, Nasir K, Einstein AJ, Nallamothu BK. Exposure to low-dose ionizing radiation from medical imaging procedures. N Engl J Med. 2009 Aug 27;361(9):849-57. doi: 10.1056/NEJMoa0901249.
- Radiation dose to patients from radiopharmaceuticals (addendum 2 to ICRP publication 53). Ann ICRP. 1998;28(3):1-126. doi: 10.1016/s0146-6453(99)00006-8.
- Einstein AJ, Henzlova MJ, Rajagopalan S. Estimating risk of cancer associated with radiation exposure from 64-slice computed tomography coronary angiography. JAMA. 2007 Jul 18;298(3):317-23. doi: 10.1001/jama.298.3.317.
- The 2007 Recommendations of the International Commission on Radiological Protection. ICRP publication 103. Ann ICRP. 2007;37(2-4):1-332. doi: 10.1016/j.icrp.2007.10.003.
- Shaw LJ, Iskandrian AE. Prognostic value of gated myocardial perfusion SPECT. J Nucl Cardiol. 2004 Mar-Apr;11(2):171-85. doi: 10.1016/j.nuclcard.2003.12.004. No abstract available.
- Fazel R, Shaw LJ. Radiation exposure from radionuclide myocardial perfusion imaging: concerns and solutions. J Nucl Cardiol. 2011 Aug;18(4):562-5. doi: 10.1007/s12350-011-9403-y. No abstract available.
- Herzog BA, Buechel RR, Katz R, Brueckner M, Husmann L, Burger IA, Pazhenkottil AP, Valenta I, Gaemperli O, Treyer V, Kaufmann PA. Nuclear myocardial perfusion imaging with a cadmium-zinc-telluride detector technique: optimized protocol for scan time reduction. J Nucl Med. 2010 Jan;51(1):46-51. doi: 10.2967/jnumed.109.065532. Epub 2009 Dec 15.
- Buechel RR, Herzog BA, Husmann L, Burger IA, Pazhenkottil AP, Treyer V, Valenta I, von Schulthess P, Nkoulou R, Wyss CA, Kaufmann PA. Ultrafast nuclear myocardial perfusion imaging on a new gamma camera with semiconductor detector technique: first clinical validation. Eur J Nucl Med Mol Imaging. 2010 Apr;37(4):773-8. doi: 10.1007/s00259-009-1375-7. Epub 2010 Jan 27. Erratum In: Eur J Nucl Med Mol Imaging. 2011 Jun;38(6):1172.
- Esteves FP, Raggi P, Folks RD, Keidar Z, Askew JW, Rispler S, O'Connor MK, Verdes L, Garcia EV. Novel solid-state-detector dedicated cardiac camera for fast myocardial perfusion imaging: multicenter comparison with standard dual detector cameras. J Nucl Cardiol. 2009 Nov-Dec;16(6):927-34. doi: 10.1007/s12350-009-9137-2. Epub 2009 Aug 18.
- Gimelli A, Bottai M, Giorgetti A, Genovesi D, Kusch A, Ripoli A, Marzullo P. Comparison between ultrafast and standard single-photon emission CT in patients with coronary artery disease: a pilot study. Circ Cardiovasc Imaging. 2011 Jan;4(1):51-8. doi: 10.1161/CIRCIMAGING.110.957399. Epub 2010 Nov 10.
- Duvall WL, Croft LB, Ginsberg ES, Einstein AJ, Guma KA, George T, Henzlova MJ. Reduced isotope dose and imaging time with a high-efficiency CZT SPECT camera. J Nucl Cardiol. 2011 Oct;18(5):847-57. doi: 10.1007/s12350-011-9379-7. Epub 2011 Apr 29.
- Duvall WL, Sweeny JM, Croft LB, Barghash MH, Kulkarni NK, Guma KA, Henzlova MJ. Comparison of high efficiency CZT SPECT MPI to coronary angiography. J Nucl Cardiol. 2011 Aug;18(4):595-604. doi: 10.1007/s12350-011-9382-z. Epub 2011 Jun 3.
- Mahmarian JJ, Shaw LJ, Olszewski GH, Pounds BK, Frias ME, Pratt CM; INSPIRE Investigators. Adenosine sestamibi SPECT post-infarction evaluation (INSPIRE) trial: A randomized, prospective multicenter trial evaluating the role of adenosine Tc-99m sestamibi SPECT for assessing risk and therapeutic outcomes in survivors of acute myocardial infarction. J Nucl Cardiol. 2004 Jul-Aug;11(4):458-69. doi: 10.1016/j.nuclcard.2004.05.003.
- ICRP. Radiation dose to patients from radiopharmaceuticals. Addendum 3 to ICRP Publication 53. ICRP Publication 106. Approved by the Commission in October 2007. Ann ICRP. 2008;38(1-2):1-197. doi: 10.1016/j.icrp.2008.08.003.
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart
1. januar 2012
Primær fullføring (Faktiske)
16. desember 2016
Studiet fullført (Faktiske)
16. desember 2016
Datoer for studieregistrering
Først innsendt
23. januar 2012
Først innsendt som oppfylte QC-kriteriene
25. januar 2012
Først lagt ut (Anslag)
26. januar 2012
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
6. september 2019
Siste oppdatering sendt inn som oppfylte QC-kriteriene
4. september 2019
Sist bekreftet
1. september 2019
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- Pro00006818
Plan for individuelle deltakerdata (IPD)
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UBESLUTTE
IPD-planbeskrivelse
No.
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