Myocardial scintigraphy Nuclear cardiology exploration types Radiopharmaceuticals Cardiac

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Myocardial scintigraphy

Myocardial scintigraphy

Nuclear cardiology exploration types Radiopharmaceuticals: Cardiac explorations Miocardial perfusion study • 201 Tl, 99

Nuclear cardiology exploration types Radiopharmaceuticals: Cardiac explorations Miocardial perfusion study • 201 Tl, 99 m. Tc MIBI • 99 m. Tc-pyrophosphat

Indications: l myocardial infarctus l heart angina - positif diagnostic, - differential diagnostic -

Indications: l myocardial infarctus l heart angina - positif diagnostic, - differential diagnostic - prognostic quantification langiographic stenosis

Contraindications, limits: Contraindications: - pregnancy (all scintigraphy types) - effort test contraindications Limits: -

Contraindications, limits: Contraindications: - pregnancy (all scintigraphy types) - effort test contraindications Limits: - the treatment Drugs that can influence the scintigraphy: - beta blocants: 72 h - calcium channels blocants: 48– 72 ore - long actions nitrates : 12 ore

Images types: - planar, anterior, OAL - 45 and 60 , posterior. . .

Images types: - planar, anterior, OAL - 45 and 60 , posterior. . . - tomography: SPECT: 180 rotation (60 images) : from OAR 45 to OPL 135. PET

99 m. Tc MIBI scintigraphy: Work protocol : rest and stress (effort or pharmacological)

99 m. Tc MIBI scintigraphy: Work protocol : rest and stress (effort or pharmacological) scintigraphy

reversible ischemia test: effort increase cardiac rate increase myocardial oxygen necessary coronary artery vasodilatation

reversible ischemia test: effort increase cardiac rate increase myocardial oxygen necessary coronary artery vasodilatation normal + stenosed – sanguine flux increase (x 4) partial sanguine flux increase (x 2) normal image myocardial ischemia

Pharmacological stress: Principle: the same Drugs: adenosine, dipiridamol, adenozintriphosphat Interpretation rest stress Stable defect

Pharmacological stress: Principle: the same Drugs: adenosine, dipiridamol, adenozintriphosphat Interpretation rest stress Stable defect : + + Reversible defect : + Partially reversible defect: +/+

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