PURPOSE: To determine the efficacy of various magnetic resonance (MR) imaging sequences for the differentiation of adrenal masses. MATERIALS AND METHODS: Fifty-three adrenal masses in 46 patients (adenomas, metastases, myelolipomas, hemorrhages, and pheochromocytomas) were evaluated by means of T1-, T2-, and T2*-weighted sequences, calculated T2 values, chemical shift imaging techniques, and dynamic contrast material-enhanced imaging. The Student t test and receiver operating characteristic analysis were used to evaluate the differences in the groups of masses. RESULTS: Analysis of the chemical shift-induced signal intensity of the adrenal masses and the T2*-weighted sequence enabled differentiation of adenomas, metastases, and pheochromocytomas. Adenomas and pheochromocytomas were also differentiated by means of a heavily T2-weighted sequence. Signal intensity values for all masses overlapped. CONCLUSION: Although a chemical shift imaging technique and a T2*-weighted sequence helped correctly differentiate among the groups of adrenal masses, the degree of overlap suggests that it is still difficult to evaluate disease in individual patients.
PURPOSE: To determine the efficacy of various magnetic resonance (MR) imaging sequences for the differentiation of adrenal masses. MATERIALS AND METHODS: Fifty-three adrenal masses in 46 patients (adenomas, metastases, myelolipomas, hemorrhages, and pheochromocytomas) were evaluated by means of T1-, T2-, and T2*-weighted sequences, calculated T2 values, chemical shift imaging techniques, and dynamic contrast material-enhanced imaging. The Student t test and receiver operating characteristic analysis were used to evaluate the differences in the groups of masses. RESULTS: Analysis of the chemical shift-induced signal intensity of the adrenal masses and the T2*-weighted sequence enabled differentiation of adenomas, metastases, and pheochromocytomas. Adenomas and pheochromocytomas were also differentiated by means of a heavily T2-weighted sequence. Signal intensity values for all masses overlapped. CONCLUSION: Although a chemical shift imaging technique and a T2*-weighted sequence helped correctly differentiate among the groups of adrenal masses, the degree of overlap suggests that it is still difficult to evaluate disease in individual patients.
Authors: R Z Słapa; W Jakubowski; E Dabrowska; A Januszewicz; B Tymińska; T Feltynowski; M Lapiński; J Fijuth Journal: MAGMA Date: 1996 Sep-Dec Impact factor: 2.310
Authors: Venkata S Katabathina; Erin Flaherty; Ravi Kaza; Vijayanadh Ojili; Kedar N Chintapalli; Srinivasa R Prasad Journal: Cancer Imaging Date: 2013-12-30 Impact factor: 3.909