myocardial perfusion imaging


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imaging

 [im´ij-ing]
the production of diagnostic images, e.g., radiography, ultrasonography, or scintigraphy.
digital subtraction imaging a technique in radiography in which electronic subtraction allows the visualization of individual images; see also digital subtraction angiography.
electrostatic imaging a method of visualizing deep structures of the body, in which an electron beam is passed through the patient and the emerging beam strikes an electrostatically charged plate, dissipating the charge according to the strength of the beam. A film is then made from the plate.
gated cardiac blood pool imaging equilibrium radionuclide angiocardiography.
horizontal beam imaging a grid positioning technique in radiology in which the grid cassette is positioned with its lead lines perpendicular to the floor.
hot spot imaging (infarct avid imaging) infarct avid scintigraphy.
magnetic resonance imaging see magnetic resonance imaging.
myocardial perfusion imaging myocardial perfusion scintigraphy.

myocardial perfusion imaging

A technique in which the regional distribution of blood throughout the myocardium, is determined by injecting a radiopharmaceutical–eg, 201Tl. or 99mTc and capturing images with a gamma–scintillation camera; by determining blood and oxygen distribution, MPI informs on the hemodynamics and functional effect of coronary arterial stenosis

myocardial perfusion imaging

Abbreviation: MPI
The use of radioactive isotopes, such as 201Tl or 99mTc sestamibi, to gauge the blood supply and viability of the regions or walls of the heart. MPI is frequently used to assess patients with coronary artery disease, often in conjunction with exercise tolerance tests. A patient with a coronary artery that is almost totally blocked may take up only a small quantity of radioisotope during exercise but much more of the tracer after several hours of rest. By contrast, heart muscle that is fed by a completely blocked artery will take up no radioisotope either during or after exercise.
See also: imaging
References in periodicals archive ?
Green et al., "Prognostic value of normal stress myocardial perfusion imaging in diabetic patients: a meta-analysis," Journal of Nuclear Cardiology, vol.
Mistry et al., "BMS-747158-02: a novel PET myocardial perfusion imaging agent," Journal of Nuclear Cardiology, vol.
Cross-table of cIMT measurements and gMPI results cIMT gMPI Total CAD Normal A 10 57 67 B 11 30 41 C 16 33 49 D 15 27 42 Total 52 147 199 CAD--coronary artery disease, cIMT--carotid intima-media thickness, gMPI--gated myocardial perfusion imaging
Utility of myocardial perfusion imaging in patients with low-risk treadmill scores.
During a median 2.4 years of follow-up, the combined rate of cardiovascular death, nonfatal MI, or revascularization more than 4 weeks after myocardial perfusion imaging was 32% in patients with at least 10% left ventricular ischemia on their presenting SPECT study, 14% in those with l%-9% ischemia, and 8% in those with no ischemia.
In the 16-center CT-STAT trial, now in press, 701 low-risk patients with chest pain and a nondiagnostic ECG in the ED were randomized to CT angiography or the standard protocol, which typically included serial biomarkers along with SPECT myocardial perfusion imaging (MPI).
TORONTO -- A large proportion of patients with hypertension and type 2 diabetes also have silent coronary artery disease, according to myocardial perfusion imaging studies presented at the annual meeting of the Society of Nuclear Medicine.
The authors provide thorough discussions of myocardial perfusion imaging, myocardial infarct imaging, dynamic cardiac imaging, cardiac positron emission tomography (PET) and the fundamentals of electrocardiography.
Comparison of myocardial perfusion imaging and cardiac troponin I in patients admitted to the emergency department with chest pain.
The study design calls for enrolled patients to be assessed at one year for graft patency as determined by angiography, the patients will first be assessed by myocardial perfusion imaging at only two months after implant.
Tenders are invited for Myocardial perfusion imaging kits

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