Research Topics
| M YingSummaryAffiliation: The Hong Kong Polytechnic University Country: China Publications
| Collaborators
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Detail Information
Publications
A semi-quantitative approach to compare high-sensitivity power Doppler sonography and conventional power Doppler sonography in the assessment of thyroid vascularityMichael Ying
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong, China
Thyroid 19:1265-9. 2009....- Three-dimensional elastography for cervical lymph node volume measurements: a study to investigate feasibility, accuracy and reliabilityMichael Ying
Department of Health Technology and Informatics, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
Ultrasound Med Biol 39:396-406. 2013..2%, 0.777 and 0.863-0.906 respectively). As a conclusion, 3-D elastography is accurate and reliable in volume measurement of ill-defined lymph nodes and has potential for accurate assessment of lymph node volume... - Three-dimensional ultrasound measurement of cervical lymph node volumeM Ying
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
Br J Radiol 82:617-25. 2009..This study provides baseline information on the normal variations of cervical lymph node volume, as measured by 3-D ultrasound... - Asymmetry of thyroid lobe volume in normal Chinese subjects: association with handedness and position of esophagusMichael Ying
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
Anat Rec (Hoboken) 292:169-74. 2009..76 mL; centrally located: mean, 5.19 mL) (P > 0.05). Thyroid asymmetry is associated with the handedness of subjects and the position of the esophagus... 
Two-dimensional ultrasound measurement of thyroid gland volume: a new equation with higher correlation with 3-D ultrasound measurementMichael Ying
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
Ultrasound Med Biol 34:56-63. 2008..05). With the use of the appropriate thyroid volume equation, 2-D ultrasound can be a useful alternative in thyroid volume measurement when 3-D ultrasound is not available...- Comparison of sonographic appearance of normal and postradiotherapy parotid glands: a preliminary studyMichael Ying
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
Ultrasound Med Biol 33:1244-50. 2007..In conclusion, ultrasound is useful in assessing parotid glands. To avoid image misinterpretation, post-RT changes in the sonographic appearance of parotid glands should be considered in examining patients with previous head and neck RT... - Reliability of 3-D ultrasound measurements of cervical lymph node volumeMichael Ying
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
Ultrasound Med Biol 32:995-1001. 2006..However, further studies to improve the reproducibility of 3-D ultrasound measurements of submental, submandibular and upper cervical node volume are suggested... - Nodal shape (S/L) and its combination with size for assessment of cervical lymphadenopathy: which cut-off should be used?M Ying
Department of Optometry and Radiography, The Hong Kong Polytechnic University, Hung Hom, Kowloon, China
Ultrasound Med Biol 25:1169-75. 1999..4), middle cervical (0.3) and posterior triangle (0.4). In the submandibular and parotid regions, the combination of the S/L ratio and short axis shows substantial improvement in diagnostic accuracy when compared to the S/L ratio alone... - Distribution of intranodal vessels in differentiating benign from metastatic neck nodesA T Ahuja
Department of Diagnostic Radiology and Organ Imaging, The Hong Kong Polytechnic University, Shatin, N T, Hong Kong
Clin Radiol 56:197-201. 2001..This study was undertaken to identify which of the parameters used in Doppler sonography of cervical lymph nodes is accurate and readily applicable in routine clinical practice... - Vascularity and grey-scale sonographic features of normal cervical lymph nodes: variations with nodal sizeM Ying
Department of Optometry and Radiography, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
Clin Radiol 56:416-9. 2001..This study was undertaken to investigate variations in the vascularity and grey-scale sonographic features of cervical lymph nodes with their size... - Power Doppler sonography to differentiate tuberculous cervical lymphadenopathy from nasopharyngeal carcinomaA Ahuja
Department of Diagnostic Radiology and Organ Imaging, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, China
AJNR Am J Neuroradiol 22:735-40. 2001..However, there is overlap of appearance between tuberculous nodes, benign reactive neck nodes, and metastatic nodes. Thus, histologic analysis is often required for a definitive diagnosis... - Evaluation of cervical lymph node vascularity: a comparison of colour Doppler, power Doppler and 3-D power Doppler sonographyAnil T Ahuja
Department of Diagnostic Radiology and Organ Imaging, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong, China
Ultrasound Med Biol 30:1557-64. 2004..However, accurate assessment of the vascular pattern of cervical nodes may be difficult using 3-D PDS. In the assessment of displacement of hilar vascularity, the performances of CDS, PDS and 3-D PDS are similar... - Gray scale and power Doppler sonography of normal cervical lymph nodes: comparison between Chinese and white subjectsMichael Ying
Department of Optometry and Radiography, The Hong Kong Polytechnic University, Kowloon, China
J Ultrasound Med 21:59-65. 2002..Results on power Doppler and gray scale sonographic assessment of cervical lymphadenopathy reported in previous studies may be applicable in both populations... 
Ultrasound of malignant cervical lymph nodesA T Ahuja
Department of Diagnostic Radiology and Organ Imaging, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong SAR, China
Cancer Imaging 8:48-56. 2008..Power Doppler sonography evaluates the vascular pattern of nodes and helps to identify the malignant nodes. In addition, serial monitoring of nodal size and vascularity are useful features in the assessment of treatment response...- Sonography of neck lymph nodes. Part II: abnormal lymph nodesA Ahuja
Department of Diagnostic Radiology and Organ Imaging, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Prince of Wales Hospital, Shatin, New Territories, SAR, Hong Kong, People's Republic of China
Clin Radiol 58:359-66. 2003..The useful Doppler features are: distribution of vascularity and intranodal resistance. Ancillary features such as oedema of soft tissue and nodal matting are particularly helpful to identify tuberculous nodes... - Evaluation of the accuracy and reliability of two 3-dimensional sonography methods in volume measurement of small structures: an in vitro phantom studyBrian C W Kot
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong SAR, China
J Clin Ultrasound 37:82-8. 2009..To evaluate the accuracy and reliability of two 3-dimensional (3D) ultrasound imaging and measurement techniques in volume measurements using custom-made phantoms... - Comparison of extended field of view and dual image ultrasound techniques: accuracy and reliability of distance measurements in phantom studyMichael Ying
Department of Optometry and Radiography, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
Ultrasound Med Biol 31:79-83. 2005..6 to 97.9%). EFOV US has a higher accuracy and reliability than dual image US in distance measurements. However, the dual image US is a useful alternative with a high accuracy and reliability when EFOV US is not available... - Repeatability of power Doppler sonography of cervical lymph nodesMichael Ying
Department of Optometry and Radiography, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
Ultrasound Med Biol 28:737-44. 2002..Results suggest that power Doppler sonography is a reliable method in assessment of the vasculature of cervical lymph nodes... - Sonographic evaluation of the size of Achilles tendon: the effect of exercise and dominance of the ankleMichael Ying
Department of Optometry and Radiography, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
Ultrasound Med Biol 29:637-42. 2003..Results suggested that exercise would cause increase in the thickness and cross-sectional area of Achilles tendon. Interobserver variability is not significant in the sonographic measurement of Achilles tendons... - Grey-scale and power Doppler sonography of unusual cervical lymphadenopathyMichael Ying
Department of Optometry and Radiography, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
Ultrasound Med Biol 30:449-54. 2004..Definitive diagnosis should still be based on cytology and histology, and US can help in guiding FNAC for a more accurate cytologic examination... - Accuracy of sonographic vascular features in differentiating different causes of cervical lymphadenopathyMichael Ying
Department of Optometry and Radiography, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
Ultrasound Med Biol 30:441-7. 2004..5) and metastases (PI > 1.5), with an accuracy of 77% in both diseases. When appropriate criteria are used, power Doppler sonography is a valuable adjunct in the sonographic evaluation of cervical lymphadenopathy... - Correlation between computerised findings and Newman's scaling on vascularity using power Doppler ultrasonography imaging and its predictive value in patients with plantar fasciitisH Chen
Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong
Br J Radiol 85:925-9. 2012.... - Sonographic evaluation of cervical lymph nodesAnil T Ahuja
Department of Diagnostic Radiology and Organ Imaging, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong SAR, China
AJR Am J Roentgenol 184:1691-9. 2005..Sonographic features that help to identify abnormal nodes include shape (round), absent hilus, intranodal necrosis, reticulation, calcification, matting, soft-tissue edema, and peripheral vascularity... - Three-dimensional ultrasound measurement of thyroid volume in asymptomatic male ChineseEdmond Ng
Department of Optometry and Radiography, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
Ultrasound Med Biol 30:1427-33. 2004..81 to 17.25 mL (mean 12.78 +/- SD 2.483), and there was no significant difference in thyroid volume between subjects of different age groups (p > 0.05). 3-D US is an accurate and reliable method by which to measure thyroid volume... - Three-dimensional ultrasound volumetric measurements: is the largest number of image planes necessary for outlining the region-of-interest?Beatrice S F Pang
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
Ultrasound Med Biol 32:1193-202. 2006..Therefore, in 3D-US volumetric measurements, the largest number of image planes may not be necessary for outlining the region-of-interest... - Sonography of neck lymph nodes. Part I: normal lymph nodesM Ying
Department of Optometry and Radiography, The Hong Kong Polytechnic University, Hung Hom, Kowloon, SAR, Hong Kong, People's Republic of China
Clin Radiol 58:351-8. 2003..This article reviews these topics in order to provide a baseline for sonographic examination of cervical lymphadenopathy... - Sonographic appearances of cervical lymph nodes: variations by age and sexMichael Ying
Department of Optometry and Radiography, The Hong Kong Polytechnic University, Yuk Choi Road, Hung Hom, Kowloon, Hong Kong SAR, China
J Clin Ultrasound 30:1-11. 2002..The presence of an increased number of cervical lymph nodes and the absence of an echogenic hilum within the nodes may help to identify an abnormality more in older patients than in younger patients... - Sonographic measurement of achilles tendons in asymptomatic subjects: variation with age, body height, and dominance of ankleBeatrice S F Pang
Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
J Ultrasound Med 25:1291-6. 2006..05). CONCLUSIONS: Sonography is a useful imaging tool in the evaluation of Achilles tendons. Normal variations of the tendon morphologic characteristics should be considered in the clinical diagnosis... - The reproducibility and short-term and long-term repeatability of sonographic measurement of splenic lengthPui-Shan Li
Department of Optometry and Radiography, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People's Republic of China
Ultrasound Med Biol 30:861-6. 2004..Measurement errors should be considered when evaluating the changes of splenic length in serial US examinations, particularly in long-term follow-up... - An overview of neck node sonographyAnil Ahuja
Department of Diagnostic Radiology and Organ Imaging, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
Invest Radiol 37:333-42. 2002..This study was undertaken to identify which of the features used in ultrasound of cervical lymph nodes is readily applicable in routine clinical practice... - Sonographic evaluation of cervical lymphadenopathy: is power Doppler sonography routinely indicated?Anil Ahuja
Department of Diagnostic Radiology and Organ Imaging, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
Ultrasound Med Biol 29:353-9. 2003..In this study, power Doppler sonography aided in the diagnosis in 5% and 17% of patients with metastatic and nonmetastatic nodes, respectively... - Doppler ultrasound of mediastinal lymph nodesMichael Ying
J Thorac Oncol 3:325-6. 2008