Naslov
Mammographic oblique views 45° versus 60° : breast thickness, breast exposure and image quality

Autori
Obad Kovačević, Dragica ; Brnić, Zoran ; Hebrang, Andrija

Izvornik
Radiology and oncology (1318-2099) 37 (2003), 1; 5-8

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
mammography ; radiation dosage ; thermoluminiscent dosimetry

Sažetak
Background.Standard screening mammography includes two views: craniocaudal and mediolateraloblique. In the mediolateral oblique projection a central beam angle can varies between 30°and 60°.Patients and methods.We compare the thickness of the compressed breast, time-current product, expo-sures and image quality in two different mammographic oblique views: 45°versus 60°. Our study popula-tion consisted of 33 women in whom additional 60°-films after standard 45°-films were obtained for the ob-jective diagnostic reasons. Results.The mean thickness of the compressed breast was significantly lower with an angle of 60°thanwith an angle of 45°(47.8 vs. 50.7 mm, p<0.01) ; the mean time-current product and the mean breast expo-sure were significantly lower with an angle of 60°than with an angle of 45°(42.6 vs. 46.7 mAs, p<0.01 ; 0.67 vs. 0.78 mGy, p<0.01). The difference in the image quality has not reached statistical significance (butit exists!).Conclusions.By introducing 60°-films instead of commonly used 45°-films, mammograms of at least thesame quality can be obtained with lower radiation dose, which is of great importance when we remind thegreat radiosensitivity of glandular breast tissue.

Izvorni jezik
Engleski

Znanstvena područja
Kliničke medicinske znanosti

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