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dc.creatorA. Faustino Rocha
dc.creatorP. A. Oliveira
dc.creatorJ. Pinho Oliveira
dc.creatorC. Teixeira Guedes
dc.creatorR. Soares Maia
dc.creatorR. M. Gil da Costa
dc.creatorB. Colaco
dc.creatorM.J. Pires
dc.creatorJ. Colaco
dc.creatorR. Ferreira
dc.creatorM. Ginja
dc.description.abstractMammary tumors similar to those observed in women can be induced in rats by intraperitoneal administration of N-methyl-N-nitrosourea. Determining tumor volume is a useful and quantitative way to monitor tumor progression. In this study, the authors measured dimensions of rat mammary tumors using a caliper and using real-time compound B-mode ultrasonography. They then used different formulas to calculate tumor volume from these tumor measurements and compared the calculated tumor volumes with the real tumor volume to identify the formulas that gave the most accurate volume calculations. They found that caliper and ultrasonography measurements were significantly correlated but that tumor volumes calculated using different formulas varied substantially. Mammary tumors seemed to take on an oblate spheroid geometry. The most accurate volume calculations were obtained using the formula V = (W-2 x L)/2 for caliper measurements and the formula V = (4/3) x pi x (L/2) x (L/2) x (D/2) for ultrasonography measurements, where V is tumor volume, W is tumor width, L is tumor length and D is tumor depth.
dc.relationinfo:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projetos Estratégicos/PEst-C/EQB/UI0511/2013/PROJECTO ESTRATÉGICO - UI 511 - 2013-2014/UI0511
dc.titleEstimation of rat mammary tumor volume using caliper and ultrasonography measurements
dc.typeArtigo em Revista Científica Internacional
dc.contributor.uportoFaculdade de Engenharia
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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