Effects of different compression techniques on diagnostic accuracies of breast masses on digitized mammograms
Effects of different compression techniques on diagnostic accuracies of breast masses on digitized mammograms
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不同压缩技术对数字化乳房X光检查乳腺肿块诊断准确性的影响
DOI：
10.1080/02841850802116241
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发表时间：
2008
期刊：
影响因子：
1.3
通讯作者：
Kuncheng Li
中科院分区：
文献类型：
--
作者：
Zhigang Liang;Xiangying Du;Jiabin Liu;Yanhui Yang;Dongdong Rong;Xinyu Yao;Kuncheng Li
背景：JPEG 2000 压缩技术最近被引入医学成像领域。了解该技术对人类观察者在数字化图像上检测乳房肿块的影响至关重要。目的：评估无损和有损技术是否影响数字化乳房X光检查中恶性和良性乳腺肿块的诊断结果。材料和方法：两名非观察放射科医生从 45 名患者中选择了总共 90 张屏幕胶片乳房 X 光照片，包括头尾视图和侧面视图。其中良性病变22例，恶性病变23例。乳腺 X 线胶片通过激光胶片数字化仪进行数字化，并使用基于 JPEG 2000 小波的图像压缩算法压缩为三个级别（无损和有损 20:1 和 40:1）。四位具有 10-12 年乳房 X 线摄影经验的放射科医生解释了原始图像和压缩图像。每次阅读的时间间隔为3周。采用恶性肿块五分制，1分表示绝对不是恶性肿块，2分表示不是恶性肿块，3分表示可能恶性肿块，4分表示可能恶性肿块，5分表示绝对恶性肿块。使用接收者操作特征分析来评估放射科医生的表现。结果：所有放射科医生的平均 Az 值从原始未压缩图像的 0.8933 下降到以 40:1 压缩的图像的 0.8299。这种差异没有统计学意义。原始图像的检测精度优于压缩图像，且Az值随着压缩比的增加而减小。结论：以40:1压缩的数字化乳房X线照片可用于替代原始图像诊断乳腺癌。
Background: The JPEG 2000 compression technique has recently been introduced into the medical imaging field. It is critical to understand the effects of this technique on the detection of breast masses on digitized images by human observers. Purpose: To evaluate whether lossless and lossy techniques affect the diagnostic results of malignant and benign breast masses on digitized mammograms. Material and Methods: A total of 90 screen-film mammograms including craniocaudal and lateral views obtained from 45 patients were selected by two non-observing radiologists. Of these, 22 cases were benign lesions and 23 cases were malignant. The mammographic films were digitized by a laser film digitizer, and compressed to three levels (lossless and lossy 20:1 and 40:1) using the JPEG 2000 wavelet-based image compression algorithm. Four radiologists with 10–12 years’ experience in mammography interpreted the original and compressed images. The time interval was 3 weeks for each reading session. A five-point malignancy scale was used, with a score of 1 corresponding to definitely not a malignant mass, a score of 2 referring to not a malignant mass, a score of 3 meaning possibly a malignant mass, a score of 4 being probably a malignant mass, and a score of 5 interpreted as definitely a malignant mass. The radiologists’ performance was evaluated using receiver operating characteristic analysis. Results: The average Az values for all radiologists decreased from 0.8933 for the original uncompressed images to 0.8299 for the images compressed at 40:1. This difference was not statistically significant. The detection accuracy of the original images was better than that of the compressed images, and the Az values decreased with increasing compression ratio. Conclusion: Digitized mammograms compressed at 40:1 could be used to substitute original images in the diagnosis of breast cancer.
影响因子：
19.7
作者：
Suryanarayanan, S;Karellas, A;D'Orsi, CJ
通讯作者：
D'Orsi, CJ
影响因子：
6.7
作者：
DORFMAN, DD;BERBAUM, KS;METZ, CE
通讯作者：
METZ, CE
用于乳腺X线摄影的高性能小波压缩：定位响应操作特性评估。
影响因子：
19.7
作者：
Kallergi,Maria;Lucier,BradleyJ;Berman,ClaudiaG;Hersh,MarlaR;Kim,JihaiJ;Szabunio,MargaretS;Clark,RobertA
通讯作者：
Clark,RobertA