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Application of CT perfusion imaging to the histological differentiation of adrenal gland tumors.

Abstract：

BACKGROUND:CT perfusion imaging has been used in diagnosis and classification of tumors widely and in assess tumor angiogenesis in some organs. However, there are few reports describing CT perfusion imaging of adrenal gland tumors. OBJECTIVE:This study aimed to evaluate the application of CT perfusion imaging in analysis of angiogenesis in adrenal tumors and in diagnosis of adrenal tumors. PATIENTS AND METHODS:Forty four patients with adrenal gland tumors (26 with adenomas and 18 with nonadenomas) were enrolled in this study. CT scan of adrenal glands was performed with the perfusion of non-ionic contrast medium Ultravist. The obtained images were processed with deconvolution algorithms-based perfusion software and then perfusion parameter maps and values (blood flow, blood volume, mean transit time, and permeability surface-area production) were generated and analyzed respectively. RESULTS:Univariate multivariate logistic regression indicated that blood volume (OR: 1.261, 95% CI: 1.056, 1.505, P=0.010) was associated with the likelihood of adrenal adenoma. Receiver operating characteristic analysis showed that the blood volume value of ≥9.325 ml min(-1) 100 g(-1) predicted adrenal adenoma with sensitivity of 76.9% and specificity of 73.2%. In addition, permeability surface-area production in adenoma was higher than in non-adenoma (27.11±15.45 vs. 16.76±14.44 ml min(-1) 100 g(-1), P<0.05). The other parameters had no clear prognostic significance. CONCLUSIONS:CT perfusion imaging can quantitatively distinguish adrenal gland tumors with different histological characteristics. Especially, blood volume can be used in differentiating adrenal adenomas from nonadenomas.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Qin HY,Sun HR,Li YJ,Shen BZ

doi

10.1016/j.ejrad.2010.12.072

subject

Has Abstract

pub_date

2012-03-01 00:00:00

pages

502-7

issue

3

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(11)00021-0

journal_volume

81

pub_type

杂志文章

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