2026-09-22T03:54:44Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/14634 2023-07-10 col_2142_5163 col_2142_5131 com_2142_5162 com_2142_234 com_2142_5130

Insana, Michael F. Insana, Michael F. Qiu, Yupeng 2010-01-06T16:20:11Z 2010-01-06T16:20:11Z 2010-01-06T16:20:11Z The prognosis of breast cancer patients improves with early and accurate diagnosis. The quality of the strain image produced by displacement estimation algorithms are heavily influenced by the RF echo data recorded by different ultrasound systems. A small clinical study was conducted with 21 women having a single nonpalpable breast lesion, each detected mammographically with later pathology confirmation. Elasticity images were acquired on each patient to test for the ability to differentiating malignant and benign lesions. The mechanical relaxation time T1 images showed a tissue-specific T1 contrast that is negative for all 11 malignant lesions and positive for all 10 benign lesions. Strain images were estimated using a regularized multi-scale optical flow (ROF) algorithm. Adjustments to the input parameters to the ROF and their subsequent effects on T1 estimation and computation time are shown to have a strong effect on diagnostic performance. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2009-12-07T18:39:27Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Qiu_Yupeng.pdf: 2764002 bytes, checksum: 1eebcc0e2e073d4c47fae27e07f2782b (MD5) Made available in DSpace on 2010-01-06T16:20:11Z (GMT). No. of bitstreams: 2 license.txt: 4057 bytes, checksum: 92ba59397edd43d1a4b228a60e56f314 (MD5) Qiu_Yupeng.pdf: 2764002 bytes, checksum: 1eebcc0e2e073d4c47fae27e07f2782b (MD5) http://hdl.handle.net/2142/14634 en "Copyright 2009 Yupeng Qiu, portions of ""Patient Imaging"" chapter copyright 2008 by Academic Radiology." Breast cancer elasticity diagnosis Ultrasonic viscoelasticity imaging of nonpalpable breast lesions 2009-12 1343 Bioengineering 0408 Bioengineering University of Illinois at Urbana-Champaign Thesis M.S. PHD: Bioengineering-UIUC 10KS0408PHD