References
- BrennanPC, McEnteeM, EvanoffM, PhillipsP, O'ConnorWT, ManningDJ. 2007. Ambient lighting: effect of illumination on soft-copy viewing of radiographs of the wrist. American Journal of Radiology 188:W177–W180.
- BrickerL, NeilsonJP, DowswellT. 2008. Routine ultrasound in late pregnancy (after 24 weeks' gestation). Cochrane Database of Systematic Reviews (4):CD001451.
- ChakrabartiK, KaczmarekRV, ThomasJA, RomanyukhaA. 2003. Effect of room illuminance on monitor black level luminance and monitor calibration. Journal of Diagnostic Imaging 16:350–355.
- ClairMR, RosenbergE, TempkinD, AndrottiRF, BowieJD. 1983. Placental grading in the complicated or high-risk pregnancy. Journal of Ultrasound in Medicine 2:297–301.
- FetterlyKA, BlumeHR, FlynnMJ, SameiE. 2008. Introduction to greyscale calibration and related aspects of medical imaging grade liquid crystal displays. Journal of Diagnostic Imaging 21:193–207.
- GooJM, ChoiJY, ImJG, LeeHJ, ChungMJ, HanD, et al. 2004. Effect of monitor luminance and ambient light on observer performance in soft-copy reading of digital chest radiographs. Radiology 232:762–766.
- GrannumPA, BerkowitzRL, HobbinsJC. 1979. The ultrasonic changes in the maturing placenta and their relation to fetal pulmonic maturity. American Journal of Obstetrics and Gynecology 133: 915–922.
- HillsD, IrwinGAL, TuckS, BaimR. 1984. Distribution of placental grade in high-risk gravidas. American Journal of Radiology 143:1011–1013.
- JauniauxE. 2003. The placenta. Ultrasound in obstetrics and gynaecology. In: DewburyK, MeireH, CosgraveD, FarrantP, editors. London: Churchill Livingstone; p 529–555.
- LandisJR, KochGG. 1977. The measurement of observer agreement for categorical data. Biometrics 33:159–174.
- McKennaD, TharmaratnamS, MahsudS, DornanJ. 2005. Ultrasonic evidence of placental calcification at 36 weeks' gestation: maternal and fetal outcomes. Acta Obstetricia et Gynecologica Scandinavica 8:7–10.
- McKennaD, TharmaratnamS, MahsudS, BailieC, HarpeA, DornanJ. 2003. A randomised trial using ultrasound to identify the high-risk fetus in a low-risk population. Obstetrics and Gynecology 101:626–632.
- ProudJ, GrantAM. 1987. Third trimester placental grading by ultrasonography as a test of fetal wellbeing. British Medical Journal 294:1641–1644.
- RyanJT, McAuliffeF, HigginsM, StantonM, BrennanPC. 2008. A novel software-based technique for quantifying placental calcifications and infarctions from ultrasound. Proceedings of SPIE – Optical Society for Optical Engineering 6290:1–8.
- SauA, SeedP, LangfordK. 2004. Intraobserver and interobserver variation in the sonographic grading of placental maturity. Ultrasound in Obstetrics and Gynecology 23:374–377.
- ShahYG, GrahamD. 1986. Relationship of placental grade to fetal pulmonary maturity and respiratory distress syndrome. American Journal of Perinatology 3:53–5.
- TabshKM. 1983. Correlation of real-time ultrasonic placental grading with amniotic fluid lecithin/sphingomyelin ratio. American Journal of Obstetrics and Gynecology 145:504–508.
- VeenaA, SapnaJ. 2000. Placental grading and its correlation with foetal outcome. Journal of Obstetrics and Gynecology of India 50:59–62.
- WadeC, BrennanPC, McEnteeMF. 2005. An assessment of the performance and quality control procedures of PACS workstation monitors used in Irish radiology departments. Proceedings of SPIE – Optical Society for Optical Engineering 574:244–255.