The first trial of phase contrast imaging for digital full-field mammography using a practical molybdenum X-ray tube

被引：79

作者：

Tanaka, T

Honda, C

Matsuo, S

Noma, K

Oohara, H

Nitta, N

Ota, S

Tsuchiya, K

Sakashita, Y

Yamada, A

Yamasaki, M

Furukawa, A

Takahashi, M

Murata, K

机构：

[1] Shiga Univ Med Sci, Dept Radiol, Otsu, Shiga 5202192, Japan

[2] Konica Minolta Med & Graphic Inc, Ctr Res & Dev, Tokyo, Japan

来源：

INVESTIGATIVE RADIOLOGY | 2005年 / 40卷 / 07期

关键词：

phase contrast; digital mammography; computed radiography; photothermographic printer; 25-micron pixel size;

D O I：

10.1097/01.rli.0000165575.43381.48

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Rationale and Objectives: The image quality of a newly developed full-field digital phase contrast mammography (PCM) system and of a conventional screen-film (SF) mammography system were compared via images of a phantom and receiver operating characteristic (ROC) analysis of clinical images. Methods: Magnified (1.75x) PCM images were scanned (sampling rate, 43.75 mu m) and then reduced to original-sized, 25-micron pixel images printed on photothermographic film. Along with corresponding SF images, the phantom images were evaluated subjectively, and the clinical images of 38 patients were subjected to ROC analysis of mass and microcalcification. Results: In the image quality of a phantom, the PCM exceeded the SF. In both mass and microcalcification, the ROC analysis Az values of the PCM clinical images surpassed those of the SF images. Conclusion: The PCM provides better images than the SF. Clinical trials suggest superior detection of both mass and microcalcification by full-field digital PCM over conventional SF mammography.

引用

页码：385 / 396

页数：12

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