Multidetector Computed Tomography for the Assessment of Adnexal Mass: Is Unenhanced CT Scan Necessary?
| Autor: | Young Jun Kim, Hae Jeong Jeon, Hee Sun Park, Sung Il Jung |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Adult
medicine.medical_specialty Adolescent Contrast Media Computed tomography Malignancy Radiation Dosage Adnexal mass Young Adult Multidetector computed tomography Multidetector Computed Tomography Medicine Humans Radiology Nuclear Medicine and imaging Adnexa Child Pelvis Aged Retrospective Studies Radiation Receiver operating characteristic medicine.diagnostic_test business.industry Significant difference Retrospective cohort study Cone-Beam Computed Tomography Middle Aged medicine.disease Unenhanced scan medicine.anatomical_structure ROC Curve Genitourinary Imaging Adnexal Diseases Original Article Female Radiology business Tomography X-Ray Computed CT |
| Zdroj: | Korean Journal of Radiology |
| ISSN: | 2005-8330 1229-6929 |
| Popis: | OBJECTIVE To compare the diagnostic performance and radiation dose between contrast-enhanced CT (ECT) alone, and combined unenhanced and contrast-enhanced CT (UE + ECT) for the assessment of adnexal mass. MATERIALS AND METHODS This retrospective study was approved by the Institutional Review Board. A total of 146 consecutive patients (mean age, 41.1 years) who underwent preoperative unenhanced and contrast-enhanced multidetector CT of the pelvis and had adnexal masses found at surgery were included. Two readers independently evaluated the likelihood of adnexal malignancy on a 5-point scale on two different imaging datasets (ECT alone and UE + ECT). The area under the receiver operating characteristic curve (AUC) was used to evaluate diagnostic performance. Radiation dose to patients was calculated by the volume CT dose index (CTDIvol) and the dose length products (DLP) on each dataset. RESULTS Of the total 178 adnexal masses, 133 masses were benign and 45 masses were malignant. For both readers, there is no significant difference of AUC values between ECT alone and UE + ECT for the detection of adnexal malignancy (reader 1, 0.93 vs. 0.95; reader 2, 0.92 vs. 0.91) (p > 0.05). The mean CTDIvol (12.6 ± 2.2 mGy) and DLP (641.2 ± 137.2 mGy) of ECT alone was significantly lower than the mean CTDIvol (21.5 ± 2.7 mGy) and DLP (923.6 ± 158.8 mGy) of UE + ECT (p < 0.0001). CONCLUSION The use of unenhanced CT scan in addition to contrast-enhanced CT scan does not improve the detection of adnexal malignancy, but increases radiation exposure. |
| Databáze: | OpenAIRE |
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