[Myocardial perfusion scintigraphy with 99mTC-sestamibi and gated SPECT and myocardial perfusion scintigraphy with reinjection of 201Tl at 24 hours. Are the techniques comparable?].
OBJECTIVE
To compare the results obtained with 99mTc-sestamibi and gated-SPECT (gated SPECT in stress and rest) with 201Tl (stress, redistribution, and 24 hour reinjection SPECT).


METHODS
Twenty patients underwent two SPECT studies, one with 201Tl and the other with 99mTc-sestamibi.


RESULTS
Using 201Tl as a reference, 177 segments were considered normal, 31 viable and 32 with myocardial necrosis. The overall concordance with 99mTc-sestamibi was 84.2%. In the subgroup of defects that improved after reinjection of 201Tl, it was much less (45%), even after wall thickness and movement (55%) were analyzed.


CONCLUSIONS
The overall concordance between 201Tl scintigraphy compared to 99mTc-sestamibi is acceptable. Correlation is low in the viable segments with 99mTc-sestamibi, even after analyzing the Gated-SPECT.
Fuster
D
D
Servicio de Medicina Nuclear, Hospital Clínic de Barcelona, Barcelona, 08036, España.
Solà
M
M
Magriñá
J
J
García
A
A
Pavía
J
J
Vidal-Sicart
S
S
Huguet
M
M
Muxí
A
A
D000328:Adult; D000368:Aged; D003627:Data Interpretation, Statistical; D004562:Electrocardiography; D005080:Exercise Test; D005260:Female; D015637:Gated Blood-Pool Imaging; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000503:physiopathology; D019275:Radiopharmaceuticals; D017256:Technetium Tc 99m Sestamibi; D013794:Thallium Radioisotopes / Q000008:administration & dosage; D013997:Time Factors; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods
D019275:Radiopharmaceuticals; D013794:Thallium Radioisotopes; D017256:Technetium Tc 99m Sestamibi
Gammagrafía miocárdica de perfusión con 99m Tc-sestamibi sincrónica con el ECG y gam-magrafía miocárdica de perfusión con reinyección de 201 TI a las 24 horas inverted question markSon técnicas comparables?