Sicherung der T-Klassifikation von Harnblasentumoren durch transkutane Sonographie, intravesikale Sonographie und Computertomographie

Kg, Greiner; Jacob, F; Kc, Klose; Schwartz, Russell

doi:10.1055/s-2008-1055937

Cited by 14 publications

(3 citation statements)

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“…Computed tomography (CT) of the urinary bladder has become a routine procedure for staging and follow-up of bladder carcinoma (2,4,10). A specially designed CT examination protocol for the urinary bladder improved the diagnosis of perivesical tumor growth (8).…”

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confidence: 99%

Absorbed Dose Resulting from a Specially Designed Computed Tomography Technique for Examination of the Urinary Bladder

1989

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The absorbed spatial dose distribution resulting from a specially designed CT protocol for examination of the urinary bladder has been investigated with TLD rods in a body phantom containing tissue equivalent material. The CT examination consisted of scout view and both pre-and postcontrast scan series with 5 mm slice thickness and 5 mm unscanned intervals between successive scans. Cross-sectional dose distribution for one scan in the plane of the ovaries was measured as well as the dose profile for one scan along a line through the ovary parallel to the axis of rotation. Based on these measurements, the dose resulting from the whole CT examination was calculated, both with contiguous and noncontiguous scans. The ovarian dose was calculated for different positions of the ovaries in relation to the scanned area. The absorbed dose varied between 8.3 mGy and 9.7 mGy with the actual technique used. When contiguous scans with the same thickness were taken, the ovarian dose increased with a factor from 1.7 to 1.9. The dose resulting from the CT protocol of the urinary bladder was of the same magnitude as absorbed dose resulting from urography. When the diagnostic gain from a precise definition of tumor extent was taken into account, the dose resulting from the CT protocol was judged acceptable.

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confidence: 99%

Absorbed Dose Resulting from a Specially Designed Computed Tomography Technique for Examination of the Urinary Bladder

1989

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“…Suprapubic sonography [16,18,19] is hardly a burden to the patient and can be carried out rapidly. As in com puter tomography, it is possible to detect perivesical infil- T categories TA/T1, T2/T3a, T3b; in rare cases, also TA/T1, T2, T3.…”

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confidence: 99%

“…Computer tomography [15][16][17]33] is hardly able to differentiate initial stages (pTa-pT3a). On the other hand, perivesical growth can readily be detected by this technique.…”

Section: Introductionmentioning

confidence: 99%