Breast Volume Measurement by Recycling the Data Obtained From 2 Routine Modalities, Mammography and Magnetic Resonance Imaging

Shizu Itsukage, Yoshihiro Sowa, Mariko Goto, Tetsuya Taguchi, Toshiaki Numajiri, Shizu Itsukage, Yoshihiro Sowa, Mariko Goto, Tetsuya Taguchi, Toshiaki Numajiri

Abstract

Objective: Preoperative prediction of breast volume is important in the planning of breast reconstructive surgery. In this study, we prospectively estimated the accuracy of measurement of breast volume using data from 2 routine modalities, mammography and magnetic resonance imaging, by comparison with volumes of mastectomy specimens. Methods: The subjects were 22 patients (24 breasts) who were scheduled to undergo total mastectomy for breast cancer. Preoperatively, magnetic resonance imaging volume measurement was performed using a medical imaging system and the mammographic volume was calculated using a previously proposed formula. Volumes of mastectomy specimens were measured intraoperatively using a method based on Archimedes' principle and Newton's third law. Results: The average breast volumes measured on magnetic resonance imaging and mammography were 318.47 ± 199.4 mL and 325.26 ± 217.36 mL, respectively. The correlation coefficients with mastectomy specimen volumes were 0.982 for magnetic resonance imaging and 0.911 for mammography. Conclusions: Breast volume measurement using magnetic resonance imaging was highly accurate but requires data analysis software. In contrast, breast volume measurement with mammography requires only a simple formula and is sufficiently accurate, although the accuracy was lower than that obtained with magnetic resonance imaging. These results indicate that mammography could be an alternative modality for breast volume measurement as a substitute for magnetic resonance imaging.

Keywords: breast cancer; breast reconstruction; breast volume; magnetic resonance imaging; mastectomy.

Figures

Figure 1
Figure 1
Breast volume measurement by magnetic resonance imaging. (a) Outline of breast tissue. (b) Reconstructed 3-dimensional image and calculation of the breast volume.
Figure 2
Figure 2
Breast volume measurement by mammography. The breast volume is calculated using a formula reported by Kalbhen et al.VMMG indicates breast volume measured using mammography; H, breast height (cm); W, breast width (cm); and C, compression thickness (cm).
Figure 3
Figure 3
Scatter plot of VMRI and Vsp. The correlation coefficient (r) was 0.982 (P < .05). VMRI indicates breast volume measured using magnetic resonance imaging; Vsp, volume of mastectomy specimen.

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Source: PubMed

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