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Inicio Revista Española de Medicina Nuclear e Imagen Molecular (English Edition) Tissue-muscle perfusion assessed by one day 99mTc-MIBI rest-dipyridamol scintigr...
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Vol. 37. Issue 3.
Pages 141-145 (May - June 2018)
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Vol. 37. Issue 3.
Pages 141-145 (May - June 2018)
Original Article
Tissue-muscle perfusion assessed by one day 99mTc-MIBI rest-dipyridamol scintigraphy in non-diabetic and diabetic patients
Perfusión tejido-músculo evaluada mediante protocolo de un día de gammagrafía reposo-dipiramidol con 99mTc-MIBI en pacientes no diabéticos y diabéticos
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N. Manevskaa,
Corresponding author
dr.nmanevska@gmail.com

Corresponding author.
, S. Stojanoskia, D. Pop Gjorcevaa, L. Todorovskab, M. Vavlukisc, V. Majstorova
a Institute of Pathophysiology and Nuclear Medicine, Medical Faculty, University of “Ss. Cyril and Methodius” Skopje, Macedonia
b Institute of Medical Physiology and Antropology, Medical Faculty, University of “Ss. Cyril and Methodius” Skopje, Macedonia
c Clinic of Cardiology, Medical Faculty, University of “Ss. Cyril and Methodius” Skopje, Macedonia
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Table 1. The number and percentage of risk factors in diabetic and non-diabetic patients.
Abstract
Aim

To determine the perfusion reserve of the lower limbs using the method 99mTc-MIBI (rest-dipyridamole) perfusion scintigraphy (one-day protocol) in the diagnostic evaluation of peripheral artery disease (PAD) in patients with and without diabetes mellitus (DM).

Material and methods

We performed tissue-muscle perfusion scintigraphy (TMPS) of the lower limbs, through one-day rest-dipyridamole protocol with 99mTc-MIBI in 24 patients, divided in two groups according to the presence of diabetes – patients with DM (Dp) 13/24 (54%), 2 males and 9 female patients, age 63±13 years and patients without DM (NDp) 11/24 (46%), 3 males and 10 females, age 61±14 years.

Results

In the dynamic phase of the rest study, the time of maximum activity (Tmax), in the early arterial phase, of the calf region was significantly prolonged in Dp compared to NDp, with lower accumulation of the radiotracer in the 1st minute (85%/87% in Dp vs. 89%/90% in NDp, ns). 4/11 of NDp (36.4%) and 7/13 of Dp (53.8%) registered pathological value of the inter-extremity index of the calves in the stress study. Perfusion reserve (PR) of the thighs (LT, RT) and calves (LC, RC) calculated with the formula “(ROI stressROI rest)×100%/ROI rest”, was significantly lower in Dp: LT: 28±19% vs. 43±24% in NDp, p<0.05; RT: 27±17% vs. 40±25% in NDp, p<0.05; LC: 22±15% vs. 36±15% in NDp, p<0.01; RC: 25±15% vs. 38±14% in NDp, p<0.01.

Conclusion

This one-day protocol (rest-dipyridamole with 99mTc-MIBI) of perfusion scintigraphy of lower limbs is considered as a useful procedure in PAD assessment, especially the asymptomatic form. TMPS of the lower limbs in our study indicated that perfusion reserve in patients with DM was significantly lower, compared to the patients without diabetes.

Keywords:
Tissue microcirculation
Lower limb
Perfusion reserve
99mTc-MIBI scintigraphy
Resumen
Objetivo

Determinar la reserva de perfusión en miembros inferiores utilizando el método de gammagrafía de perfusión (protocolo de un día) con 99mTc-MIBI (reposo-dipiridamol) en la evaluación diagnóstica de la enfermedad arterial periférica (EAP) en pacientes con y sin diabetes mellitus (DM).

Material y métodos

Realizamos gammagrafía de perfusión tejido-músculo (TMPS) de miembros inferiores, mediante el protocolo de un día de reposo-dipiridamol con 99mTc-MIBI en 24 pacientes, divididos en dos grupos, según la presencia de diabetes: pacientes con DM (Dp) 13/24 (54%), 2 varones y 9 mujeres, de edad 63±13 años, y pacientes sin DM (NDp) 11/24 (46%), 3 varones y 10 mujeres, de edad 61±14 años.

Resultados

En la fase dinámica del estudio en reposo, el tiempo de actividad máxima (Tmax), en la fase arterial temprana, de la región de la pantorrilla, estaba significativamente retrasado en Dp con respecto a NDp, con menor acumulación de radio-trazador en el 1er minuto (85-87% en Dp vs. 89-90% en NDp, ns). 4/11 pacientes de NDp (36,4%) y 7/13 de Dp (53,8%) registraron un valor patológico del índice inter-extremidad de la pantorrilla en el estudio de estrés. La reserva de perfusión (RP) de los muslos (MI, MD) y las pantorrillas (PI, PD) calculada mediante la fórmula “(ROI estrés-ROI reposo) x 100%/ROI reposo”, fue significativamente menor en Dp: MI: 28±19% vs. 43±24% en NDp, p<0,05; MD: 27±17% vs. 40±25% en NDp, p<0,05; PI: 22±15% vs. 36±15% en NDp, p<0,01; PD: 25±15% vs. 38±14% in NDp, p<0,01.

Conclusión

Este protocolo de un día (reposo-dipiridamol con 99mTc-MIBI) de gammagrafía de perfusión de miembros inferiores se considera un procedimiento útil para la valoración de los pacientes con EAP, especialmente en su forma asintomática. La TMPS de miembros inferiores en nuestro estudio indicó que la reserva de perfusión en pacientes con DM fue significativamente menor, en comparación con los pacientes sin diabetes.

Palabras clave:
Microcirculación tisular
Pierna
Reserva de perfusión
Gammagrafía con 99mTc-MIBI

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