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MESANE TÜMÖRLERİNİN TANISINDA SANAL BT SİSTOSKOPİ VE KONVANSİYONEL SİSTOSKOPİ BULGULARININ KARŞILAŞTIRILMASI

Comparison of CT virtual cystoscopy and conventional cystoscopy in diagnosis of bladder tumors

Journal Name:

  • Selçuk Tıp Dergisi

Publication Year:

  • 2007

Key Words:

Keywords (Original Language):

Author NameUniversity of Author
Abstract (2. Language): 
Aim: The purpose of this study was to investigate the value of contrast material-filled virtual cystos-copy in the detection of bladder tumors. Material and method: Thirty-six consecutive patients (28 male and 8 female; range age, 51-82 years; mean age ± SD, 65 ± 7 years) who had painless he-maturia and suspected to have bladder neoplasm prospectively evaluated with virtual cystoscopy. After the intravenous injection of contrast medium, the contrast material-filled bladder was exami¬ned with single detector helical computed tomography (CT) scan with 2-mm slice thickness. Source CT data were transferred to a workstation for interactive navigation using surface rendering. All pa¬tients also underwent conventional cystoscopy. The results of virtual cystoscopy were compared with the findings of conventional cystoscopy. Results: Seventy-one of 78 bladder tumors detected with conventional cystoscopy in 28 patients were also shown on virtual images. Five patients had a normal appearance on both conventional cystoscopy and virtual cystoscopy. On virtual cystoscopy, seven of the 12 lesions 5 mm or smaller in diameter could be identified. We found the following statistical values for the identification of bladder lesions on virtual cystoscopy: sensitivity, 94%; speci¬ficity, 90%; positive predictive value, 87%; negative predictive value, 93%; and accuracy 93%. Conclusion: CT virtual cystoscopy is a noninvasive technique which is used successfully for detec¬tion of bladder tumors larger than 5 mm.
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Abstract (Original Language): 
Amaç: Bu çalışmanın amacı, mesane tümörlerinin tespitinde kontrast madde doldurularak yapılan sanal sistoskopinin etkinliğini araştırmaktır. Gereç ve Yöntem: Ağrısız hematüri şikayeti bulunan ve mesane kanseri düşünülen ardışık 36 olgu (28 erkek ve 8 kadın; yaş aralığı, 51-82; ortalama ± SD, 65 ± 7) sanal sistoskopi ile değerlendirildi. İntravenöz yoldan verilen kontrast madde ile dolan mesa¬ne, tek kesitli spiral bilgisayarlı tomografi (BT) ile 2 mm kesit kalınlığında incelendi. BT tarama bilgile¬ri, gölgeli yüzey gösterimi metodu kullanılarak yapılacak olan interaktif navigasyon işlemi için iş istas¬yonuna aktarıldı. Tüm olgular konvansiyonel sistoskopi ile incelendi. Sanal sistoskopi sonuçları kon-vansiyonel sistoskopi sonuçları ile karşılaştırıldı. Bulgular: Yirmi sekiz olguda konvansiyonel sistosko-pide görülen 78 mesane tümörünün 71'i sanal görüntülerde de izlendi. Olguların 5'i hem konvan-siyonel hem de sanal sistoskopide normal görünmekteydi. Sanal sistoskopide, 5 mm ve daha küçük çaptaki 12 lezyonun 7'si tanımlanabildi. Çalışmamızda sanal sistoskopide mesane lezyonlarının tanım¬lanmasında aşağıdaki istatistiksel değerleri bulduk: Sensitivite %94, spesifisite %90, pozitif prediktif de¬ğer %87, negatif prediktif değer %93 ve doğruluk %93. Sonuç: BT sanal sistoskopi, 5 mm ve daha büyük mesane tümörlerinin görüntülenmesinde başarı ile kullanılabilen noninvaziv bir yöntemdir.
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  • 2
47-56
  • Turkish

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