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Radiologia Brasileira

On-line version ISSN 1678-7099


JANNINI, Denise Said et al. Morphological and hemodynamic features of the spleen in normal subjects: a Doppler ultrasound study. Radiol Bras [online]. 2003, vol.36, n.4, pp.213-218. ISSN 1678-7099.

BACKGROUND: The diversity of existing techniques for the measurement of the spleen using Doppler ultrasound (Doppler-US) as well as the lack of biometrical and Doppler velocimetry reference values make the evaluation of this organ and its hemodynamics quite difficult. OBJECTIVES: To establish biometrical and hemodynamics Doppler-US standard values for healthy adult individuals. MATERIALS AND METHODS: This is a prospective study involving 44 healthy individuals (19 males and 25 females) with mean age of 37.4 ± 9.6 years (23-60 years). Morphometry (US-B mode): spleen: longitudinal (L), transversal (T) and anteroposterior (AP) axes; splenic artery diameter (AD) and splenic vein diameter (VD). Morphometrical spleen indexes: uniplanar (UI), biplanar (BI) and the splenic volume (SV). Doppler velocimetry (US-Doppler): a) splenic artery: systolic peak velocity (SPV), mean of the highest flow speeds (TAMax); pulsability index (PI) and vascular impedance resistivity index(RI); b) splenic vein: mean of the highest flow speeds (TAMax). RESULTS: Morphometry: L = 9.3 ± 1.3 cm; T= 3.9 ± 0.7 cm; AP = 8.4 ± 1.2 cm; AD = 0.3 ± 0.07 cm; VD: 0.5 ± 0.12 cm. Morphometrical spleen indexes: UI = 33.5 ± 9.9; BI = 36.7 ± 10.3; SV = 164.3 ± 62.9 cm³. Doppler velocimetry: a) splenic artery: SPV = 59.8 ± 23.6 cm/s; TAMax = 40.2 ± 15.9 cm/s; PI = 0.86 ± 0.30; RI = 0.55 ± 0.09; b) splenic vein: TAMax = 16.8 ± 8.3 cm/s. CONCLUSION: Report of biometrical and Doppler velocimetry standard values of the spleen in healthy individuals.

Keywords : Spleen; Splenic biometry; Ultrasound; Doppler.

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