Multidetector Computed Tomography for the Assessment of Adnexal Mass: Is Unenhanced CT Scan Necessary?
Korean Journal of Radiology
;
: 72-79, 2014.
Artigo
em Inglês
| WPRIM
| ID: wpr-114854
ABSTRACT
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 ANDMETHODS:
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.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Doses de Radiação
/
Tomografia Computadorizada por Raios X
/
Estudos Retrospectivos
/
Curva ROC
/
Doenças dos Anexos
/
Meios de Contraste
/
Tomografia Computadorizada de Feixe Cônico
/
Tomografia Computadorizada Multidetectores
Tipo de estudo:
Estudo observacional
/
Estudo prognóstico
Limite:
Adolescente
/
Adulto
/
Idoso
/
Criança
/
Feminino
/
Humanos
Idioma:
Inglês
Revista:
Korean Journal of Radiology
Ano de publicação:
2014
Tipo de documento:
Artigo
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