Tek Enerji ve Hızlı Voltaj Değişimli Çift Enerji Abdomen Bilgisayarlı Tomografilerine Ait Bilgisayarlı Tomografi Doz İndekslerinin Karşılaştırılması

Abstract

Amaç: Tek kaynaklı tek enerji (TK TE) ve tek kaynaklı hızlı voltaj değişimli çift enerji (TK HVD-ÇE) abdomen bilgisayarlı tomografilerine (BT) ait BT doz indekslerini (BTDİ) karşılaştırmak.

Gereç ve Yöntemler: Bu prospektif çalışmada, yaş ortalaması 52±15,7 yıl olan 73 hastadan (32 Kadın ve 41 Erkek) elde olunmuş HVD-ÇE abdomen BT’lere ait ortalama BTDİ, TE abdomen BT’lere ait ortalama BTDİ’ler ile karşılaştırıldı. Tüm hastaların vücut kitle indeksleri (VKİ) ve BT taramalarına ait BTDİ’leri kaydedildi. İstatistiksel analiz için örneklem t testi kullanıldı. P değeri <0.05 istatistiksel olarak anlamlı kabul edildi.

Bulgular: Ortalama VKİ 24.2±7.6 ve HVD-ÇEBT ile TEBT’lere ait ortalama BTDİ değerleri sırasıyla 14.6±2.5 mGy ve 12.5±7.2 mGy idi. Her iki teknik ile elde olunan ortalama BTDİ’ler arasındaki fark anlamlıydı (p=0.02). HVD-ÇE abdomen BT’ye ait ortalama CTDİ, TE abdomen BT’ye göre %14.4 daha fazla idi.

Sonuç: HVD-ÇE abdomen BT’ye ait ortalama CTDİ, TE abdomen BT’ye göre %14.4 daha fazla idi.

Keywords

• Çift enerji,Abdomen BT,BT,Çift enerji BT

Comparison of Computed Tomography Dose İndices for Single Energy and Fast Kilovoltage Switching Dual Energy Abdominal Computed Tomographies

Abstract

Objective: To investigate the computed tomography dose index (CTDI) of the single source fast kilovoltage-switching dual energy CT (SS FKS-DECT) of the abdomen compared to conventional single source single energy (SSSE) CT.

Materials and Methods: In this prospective study, the mean CTDI of the SS FKS-DECT of the abdomen obtained from 73 patients (32 women and 41 men) with a mean age of 52±15.7 years, compared to the CTDI of the conventional SSSE CT. Body mass index (BMI) of all patients and CTDI of all scans were noted. Two-tailed student t test was used for statistical analysis. P value of <0.05 was considered as statistically significant.

Results: The mean BMI was 24.2±7.6 and the mean CTDI for the FKS-DECT and SECT were 14.6±2.5 mGy and 12.5±7.2 mGy, respectively. The difference between the CTDI values of both acquisitions were statistically significant (p=0.02). The mean CTDI of the FKS-DECT of the abdomen was 14.4% higher than those for the SECT.

Conclusion: The mean CTDI of the SS FKS-DE abdomen CT was 14.4% higher than those of the SS SE abdomen CT.

Keywords

• Dual energy,Abdominal CT,CT,Dual energy CT

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