Study of the reduced field-of-view diffusion-weighted imaging of the breast.
BACKGROUND
This study aimed to compare the imaging quality, apparent diffusion coefficient (ADC) values, and application values between reduced field-of-view diffusion-weighted imaging (rFOV DWI) and single-shot echo-planar-imaging diffusion-weighted imaging (SS-EPI DWI) of breast tissue.


METHODS
For 87 cases (75 with normal breast tissue, 12 with mammary cancer), breasts were scanned with SS-EPI DWI and rFOV DWI (b values, 800 s/mm(2)). Image quality and ADC values of breast tissue images were compared between SS-EPI DWI and rFOV DWI.


RESULTS
The average image quality score for the 87 cases was 4.73 in rFOV DWI and 3.62 in SS-EPI DWI. The difference was statistically significant (P < .01). The resolution of rFOV DWI was 2.25 mm × 1.23 mm, which was higher than the resolution of SS-EPI DWI (2.25 mm × 2.25 mm). The mean ADC value of 75 cases with normal breast tissue was 1.696 × 10(-3) mm(2)/s by rFOV DWI and 1.832 × 10(-3) mm(2)/s by SS-EPI DWI, and the difference was statistically significant (P < .01). The mean ADC value for the 12 cases with breast cancer was 1.065 × 10(-3) mm(2)/s by rFOV DWI and 1.192 × 10(-3) mm(2)/s by SS-EPI DWI, which was a statistically significant difference (P < .05).


CONCLUSIONS
rFOV DWI presented images with higher resolution and less distortion than SS-EPI DWI, and this difference may be helpful in disease diagnosis.
Department of Radiology, Lihuili Hospital of Ningbo Medical Center, Ningbo, Zhejiang, 315041, People's Republic of China. Electronic address: donghb18@sina.com.
Haibo
H
Dong
Department of Radiology, Lihuili Hospital of Ningbo Medical Center, Ningbo, Zhejiang, 315041, People's Republic of China.
Yadi
Y
Li
Department of Radiology, Lihuili Hospital of Ningbo Medical Center, Ningbo, Zhejiang, 315041, People's Republic of China.
Hui
H
Li
Department of Radiology, Lihuili Hospital of Ningbo Medical Center, Ningbo, Zhejiang, 315041, People's Republic of China.
Bo
B
Wang
Department of Radiology, Lihuili Hospital of Ningbo Medical Center, Ningbo, Zhejiang, 315041, People's Republic of China.
Bin
B
Hu
D000328:Adult; D000368:Aged; D001940:Breast / Q000473:pathology*; D001943:Breast Neoplasms / Q000175:diagnosis*; D018270:Carcinoma, Ductal, Breast / Q000175:diagnosis*; D002291:Carcinoma, Papillary / Q000175:diagnosis*; D016022:Case-Control Studies; D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods*; D017352:Echo-Planar Imaging / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D008875:Middle Aged; D009367:Neoplasm Staging; D010865:Pilot Projects; D011379:Prognosis; D011446:Prospective Studies; D015203:Reproducibility of Results
Apparent diffusion coefficient; High resolution; Magnetic resonance imaging