Radiation Dose Comparison between Intravenous Urography (IVU) and Unenhanced Helical Computed Tomography (UHCT) Urography
- Author:
Akmal Sabarudin
;
Kanaga Kumari Chelliah
;
Hamzaini Abdul Hamid
- Publication Type:Journal Article
- Keywords:
Intravenous urography;
unenhanced helical computed tomography urography;
radiation dose;
image quality
- From:Malaysian Journal of Health Sciences
2014;12(2):9-16
- CountryMalaysia
- Language:English
-
Abstract:
Intravenous urography (IVU) and unenhanced helical computed tomography (UHCT) urography are the two main procedures
performed in the radiological investigation for urolithiasis (urinary stone). However, exposure to ionizing radiation is the
main concern in both procedures. Therefore, a dose comparison study was conducted between IVU and UHCT urography
procedures to determine the optimum exposure parameters in this study. An anthropomorphic whole body phantom was
used following the exact procedure of UHCT urography and series of imaging for IVU with an administration of contrast
media. Three different exposure parameters were used for IVU with 75 kVp, 80 kVp and 85 kVp while 100 kVp, 120 kVp
and 140 kVp for UHCT urography respectively. As a result, the radiation doses for IVU were 1.40 mSv, 2.10 mSv and
2.79 mSv corresponding to 75 kVp, 80 kVp and 85 kVp. On the other hand, the radiation doses for UHCT urography were
0.76 mSv, 1.32 mSv and 1.82 mSv for 100 kVp, 120 kVp and 140 kVp, respectively. However the optimum image was
obtained at 85 kVp for IVU and 120 kVp for UHCT urography. In conclusion, the doses obtained from IVU were consistently
higher than UHCT urography but not signifi cantly different
- Full text:W020150511372977587692.pdf
