Image-Based Treatment Planning of the Post-Lumpectomy Breast Utilizing CT and 3TMRI

被引：15

作者：

Jacobson, Geraldine ^{[1
]}

Zamba, Gideon ^{[2
]}

Betts, Vicki ^{[1
]}

Muruganandham, M. ^{[1
]}

Buechler-Price, Joni ^{[1
]}

机构：

[1] Univ Iowa Hosp & Clin, Dept Radiat Oncol, 200 Hawkins Dr, Iowa City, IA 52242 USA

[2] Univ Iowa, Dept Biostat, Coll Publ Hlth, Iowa City, IA 52242 USA

来源：

INTERNATIONAL JOURNAL OF BREAST CANCER | 2011年 / 2011卷

关键词：

D O I：

10.4061/2011/246265

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

Accurate lumpectomy cavity definition is critical in breast treatment planning. We compared contouring lumpectomy cavity volume and cavity visualization score (CVS) with CT versus 3T MRI. 29 patients were imaged with CT and 3T MRI. Seven additional boost planning sets were obtained for 36 image sets total. Three observers contoured the lumpectomy cavity on all images, assigning a cavity visualization score (CVS) of 1 to 5. Measures of consistency and agreement for CT volumes were 98.84% and 98.62%, for T1 MRI were 95.65% and 95.55%, and for T2 MRI were 97.63% and 97.71%. The mean CT, T1 MRI, and T2 MRI CVS scores were 3.28, 3.38, and 4.32, respectively. There was a highly significant difference between CT and T2 scores (P < .00001) and between T1 and T2 scores (P < .00001). Interobserver consistency and agreement regarding volumes were high for all three modalities with T2 MRI CVS the highest. MRI may contribute to target definition in selected patients.

引用

页数：5

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