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Added Value of Using a CT Coronal Reformation to Diagnose Adnexal Torsion
Korean Journal of Radiology ; : 835-845, 2015.
Article in English | WPRIM | ID: wpr-22486
ABSTRACT

OBJECTIVE:

To evaluate the increased value of using coronal reformation of a transverse computed tomography (CT) scan for detecting adnexal torsion. MATERIALS AND

METHODS:

This study included 106 woman suspected of having adnexal torsion who underwent CT with coronal reformations and subsequent surgical exploration. Two readers independently recorded the CT findings, such as the thickening of a fallopian tube, twisting of the adnexal pedicle, eccentric smooth wall thickening of the torsed adnexal mass, eccentric septal thickening of the torsed adnexal mass, eccentric poor enhancement of the torsed adnexal mass, uterine deviation to the twisted side, ascites or infiltration of pelvic fat, and the overall impression of adnexal torsion with a transverse scan alone or combined with coronal reformation and a transverse scan. The areas under the receiver operating characteristic curves (AUCs), sensitivity, specificity, and positive predictive value were used to compare diagnostic performance.

RESULTS:

Fifty-two patients were confirmed to have adnexal torsion. The addition of coronal reformations to the transverse scan improved AUCs for readers 1 and 2 from 0.74 and 0.75 to 0.92 and 0.87, respectively, for detecting adnexal torsion (p < 0.001 and p = 0.004, respectively). Sensitivity of CT for detecting twisting of the adnexal pedicle increased significantly for readers 1 and 2 from 0.27 and 0.29 with a transverse scan alone to 0.79 and 0.77 with a combined coronal reformation and a transverse scan, respectively (p < 0.001 and p < 0.001, respectively).

CONCLUSION:

Use of a coronal reformation with transverse CT images improves detection of adnexal torsion.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Pelvis / Torsion Abnormality / Tomography, X-Ray Computed / Retrospective Studies / ROC Curve / Adnexa Uteri / Adnexal Diseases / Area Under Curve / Acute Pain Type of study: Diagnostic study / Observational study / Prognostic study Limits: Adolescent / Adult / Aged / Aged80 / Child / Female / Humans Language: English Journal: Korean Journal of Radiology Year: 2015 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Pelvis / Torsion Abnormality / Tomography, X-Ray Computed / Retrospective Studies / ROC Curve / Adnexa Uteri / Adnexal Diseases / Area Under Curve / Acute Pain Type of study: Diagnostic study / Observational study / Prognostic study Limits: Adolescent / Adult / Aged / Aged80 / Child / Female / Humans Language: English Journal: Korean Journal of Radiology Year: 2015 Type: Article