+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Methods of measurement of image quality in teleultrasound

Methods of measurement of image quality in teleultrasound

British Journal of Radiology 73(876): 1306-1312

In recent years, teleultrasound has emerged as a potentially effective method of provision of ultrasound services to remote areas of the community. Transmission of teleultrasound, however, requires a high degree of compression when utilizing the relatively low bandwidth ISDN connections available within the UK. The actual amount of compression occurring varies both with the connection and the image content, often on a frame to frame basis. For this reason, traditional measurements of image quality using test tools are ineffective. Most studies to date have assessed equipment performance by testing diagnostic performance. Although this is the most important method of assessing the results of image degradation, few studies have attempted to perform physical measurements of degradation. The aims of this study were to measure the amount of degradation within a teleultrasound system and, using a number of methods, to ascertain the most useful indicators of loss of image quality. Groups of successive abdominal ultrasound images were captured and digitized both before and after degradation via an ISDN6 teleultrasound system. Normalized mean squared error (NMSE), pixel histograms, line and surface plots, Fourier spectra and contrast measurements were carried out on regions of interest in both sets of images. The NMSE was most sensitive to degradation, with alterations in the NMSE value depending on image content and degree of degradation. Fourier analysis was also indicative, showing consistent changes in high frequency content again varying with image content.

(PDF emailed within 0-6 h: $19.90)

Accession: 046676287

Download citation: RISBibTeXText

PMID: 11205675

DOI: 10.1259/bjr.73.876.11205675

Related references

Image quality in real-time teleultrasound of infant hip exam over low-bandwidth internet links: a transatlantic feasibility study. Journal of Digital Imaging 26(2): 209-216, 2013

Methods and materials for the measurement of subjective and objective measurements of image quality. Radiation Protection Dosimetry 94(1-2): 37-42, 2001

Methods and devices for the measurement of the degradation of image quality on the retina of the human eye due to cataract. Official Gazette of the United States Patent & Trademark Office Patents 1192(4): 3035, Nov 26, 1996

Investigation of image quality identification utilizing physical image quality measurement in direct- and indirect-type of flat panel detectors and computed radiography. Nihon Hoshasen Gijutsu Gakkai Zasshi 67(11): 1415-1425, 2012

A systematic procedure to optimise dose and image quality for the measurement of inter-vertebral angles from lateral spinal projections using Cobb and superimposition methods. Journal of X-Ray Science and Technology 22(5): 613-625, 2015

Measurement and importance of image quality of X-ray image intensifers. Proceedings of the Second Colloquium on Diagnostic Radiologic Instrumentation: Modulation transfer function, Chicago, Ill , April, 1964 160-179, 1965

Threshold contrast detail detectability measurement of the fluoroscopic image quality of a dynamic solid-state digital x-ray image detector. Medical Physics 28(1): 11-15, 2001

Coronary artery calcium scoring using ECG-gated multidetector CT: effect of individually optimized image-reconstruction windows on image quality and measurement reproducibility. Ajr. American Journal of Roentgenology 181(4): 1093-1100, 2003

Comparison of image data acquisition methods in terms of image quality, costs and operation flexibility. Lemke, H U, Vannier, M W, Inamura, K, Farman, A G International Congress Series; CAR '98: Computer assisted radiology and surgery 959, 1998

Penetration quality measurement for standardization of radiographic image quality. Medical Physics 2(1): 5-8, 1975

Comparison of image quality of 64-slice multidetector CT coronary CT angiography using automated and manual multiphase methods for the determination of optimal phases for image reconstruction in patients with various mean heart rates. International Journal of Cardiovascular Imaging 26 Suppl 1: 41-52, 2010

Comparison Between Two Methods of SNR Measurement of Image Tubes. Applied Optics 13(10): 2187-2189, 1974

7. Measurement of image quality in mammography. Journal of the Icru 9(2): 65-75, 2009

Image quality evaluation of new image reconstruction methods applying the iterative reconstruction. Nihon Hoshasen Gijutsu Gakkai Zasshi 68(4): 404-412, 2012