- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning NCT02458352
Ultra Low Dose CT for CACS and AC of SPECT
Usefulness of Ultra Low Dose Cardiac CT for Coronary Calcium Scoring and for Attenuation Correction of SPECT
Studieöversikt
Status
Betingelser
Intervention / Behandling
Studietyp
Inskrivning (Faktisk)
Fas
- Inte tillämpbar
Kontakter och platser
Studieorter
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Zurich, Schweiz, 8091
- Department of Nuclear Medicine, University Hospital Zurich
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Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Kön som är behöriga för studier
Beskrivning
Inclusion Criteria:
- Patients referred for myocardial perfusion SPECT
- Male and Female subjects ≥18 years of age,
- Written informed consent
Exclusion Criteria:
- Pregnancy or breast-feeding
- CACS of 0 after inclusion of 10 patients with CACS 0
- Stents or implanted cardiac devices (valves, pace makers, ICD)
- Coronary artery bypass grafts
Studieplan
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Diagnostisk
- Tilldelning: N/A
- Interventionsmodell: Enskild gruppuppgift
- Maskning: Ingen (Open Label)
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
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Övrig: Standard dose CT, Ultra-low dose CT
Standard dose non-contrast enhanced CT (clinically indicated) and Ultra low dose non-contrast enhanced CT (as part of the trial)
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Non-contrast enhanced CT for CACS and AC using a novel protocol for ultra low dose radiation dose exposure
Clinically indicated non-contrast enhanced CT for CACS and AC according to routine protocol
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Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Agreement and Correlation of Coronary Artery Calcium Score Obtained From Ultra-low-dose and Standard CT
Tidsram: 1 days
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CAC and BA limits of agreement between coronary artery calcium score obtained from ultra-low-dose and standard CT. Coronary artery calcium (CAC) is a measure for quantification of coronary artery calcification based on non-contrast enhanced CT, ranging from 0 (no calcifications) to infinite. It is an arbitrary unit. Increasing CAC means higher amounts of coronary artery calcifications and is associated with worse prognosis. Bland-Altman (BA) analysis is a statistical method to compare two modalities or techniques assessing the same measure. Limits of agreement is defined as +/- twice the standard deviation of the differences between the reference method and the new modality/technique. Broader limits of agreement mean less accurate results obtained by the new modality/techniqe, while a 0 BA limit of agreement would theoretically reflect perfect agreement. |
1 days
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Intra-class Correlation Coefficient Between Segmental Relative Tracer Uptake From SPECT Datasets Reconstructed With AC Maps Based on Ultra-Low-Dose and Standard Dose CT
Tidsram: 1 day
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For every patient, the CT images from 120 and 70 kVp-CT scans were used to create CTAC maps which were then used to reconstruct SPECT images, displayed as a 17-segment model polar plot with normalized percent tracer uptake given for every segment.
Intra-class correlation was then applied to compare segmental relative tracer uptake.
Analysis and the resulting correlation coefficient of 0.987 basically demonstrates interchangeability between the two datasets.
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1 day
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Samarbetspartners och utredare
Sponsor
Utredare
- Studierektor: Valerie Treyer, PhD, University of Zurich
Studieavstämningsdatum
Studera stora datum
Studiestart
Primärt slutförande (Faktisk)
Avslutad studie (Faktisk)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Uppskatta)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- USZ-2015-0072
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