Distinguishing between cystic teratomas and endometriomas of the ovary using chemical shift gradient echo magnetic resonance imaging

Hideyuki Ishijima; H Ishijima; Hiroshi Ishizaka; H Ishizaka; T Inoue; Tomio Inoue

doi:10.1111/j.1440-1673.1996.tb00339.x

Distinguishing between cystic teratomas and endometriomas of the ovary using chemical shift gradient echo magnetic resonance imaging

Hideyuki Ishijima, H Ishijima, Hiroshi Ishizaka, H Ishizaka, T Inoue, Tomio Inoue

Australasian radiology · 1996 · vol. 40(1) , pp. 22–25 · doi:10.1111/j.1440-1673.1996.tb00339.x · PMID:8838883 · W2003248145

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Chemical shift gradient echo MRI effectively distinguished ovarian cystic teratomas from endometriomas by analyzing signal intensity indices derived from images with varying echo times.

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Abstract

The purpose of this study was to evaluate the efficacy of chemical shift gradient echo magnetic resonance imaging (MRI) in distinguishing between cystic teratomas and endometriomas of the ovary, using a 1.5T magnet. The study included 22 patients with 31 ovarian lesions (15 cystic teratomas and 16 endometriomas), which showed high signal intensity on T1-weighted spin echo images. Chemical shift gradient echo images with three different echo times (TE = 2.5, 4.5 and 6.5 ms) were obtained in all cases. Indices were calculated on the basis of the signal intensities of lesions on the chemical shift gradient echo images. All endometriomas had signal intensity indices of less than 2.1, while all cystic teratomas had signal intensity indices of 18.1 or greater. Chemical shift gradient echo imaging is an alternative method that is useful and simple for distinguishing between cystic teratomas and endometriomas of the ovary.

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Condition tags

endometriosis

MeSH descriptors

Endometriosis Magnetic Resonance Imaging Ovarian Diseases Ovarian Neoplasms Teratoma Diagnosis, Differential Endometriosis Female Humans Magnetic Resonance Imaging Ovarian Diseases Ovarian Neoplasms Ovary Ovary Prospective Studies Teratoma

Citation neighborhood (sparse)

Too few in-corpus citations on either side for a chart; here are the lists.

Cites (4)

References (11)

Endometrial cysts of the ovary: MR imaging. via openalex
Endometriosis: appearance and detection at MR imaging. via openalex
Pelvic endometriosis: detection and diagnosis with chemical shift MR imaging. via openalex
Pelvic endometriosis: MR imaging. via openalex
doi:10.1148/radiology.186.2.8421755 via openalex
doi:10.1148/radiology.162.3.3809479 via openalex
doi:10.1148/radiology.162.2.3541026 via openalex
doi:10.1016/0730-725x(87)90045-2 via openalex
doi:10.1148/radiology.180.1.2052726 via openalex
doi:10.1148/radiology.181.1.1887036 via openalex
doi:10.2214/ajr.158.2.1729791 via openalex

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pubmed: last seen: 2026-05-13T22:11:08.331550+00:00

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[1] Pelvic endometriosis: MR imaging. 1989

[2] Endometriosis: appearance and detection at MR imaging. 1989

[3] Endometrial cysts of the ovary: MR imaging. 1987

[4] Pelvic endometriosis: detection and diagnosis with chemical shift MR imaging. 1993