التفاصيل البيبلوغرافية
| العنوان: |
Detection of a numeric value predictive of increased dose to left anterior descending coronary artery (LAD) in radiotherapy of breast cancer |
| المؤلفون: |
Di Franco, R., Ravo, V., Nieddu, V., Crispo, A., Falivene, S., Giugliano, F., Argenone, A., Borzillo, V., Cammarota, F., Muto, P. |
| بيانات النشر: |
BioMed Central Ltd. |
| سنة النشر: |
2016 |
| المجموعة: |
BioMed Central |
| مصطلحات موضوعية: |
Radiotherapy, Breast cancer, Heart, Coronary arteries, Chest thorax |
| الوصف: |
Purpose We have evaluated thoracic conformation of patients in order to derive a numeric value predictive of an increased dose to left anterior descending coronary artery (LAD), critical structure for the development of late radio induced cardiac morbidity. Methods We have evaluated 91 patients (36–88 years) affected by breast cancer stage I–II (Tis–T1–2 N0–1), undergoing adjuvant radiotherapy with conventional fractionation. For each patient on CT images was measured the distance between the back face of the sternum (manubrium) and the anterior face of body of the corresponding vertebra (a), and the distance measured on the line at 45° between the vertebral body of the same vertebra and the back face of the rib corresponding (b). The a/b ratio showed values between 0.626 and 1.123. We used the median value (0.821) as cut-off to divide the patients in two groups. We calculated in both groups: Volume (Vol) heart, Vol LAD with an expansion of 0.6 mm; Dmean LAD (Gy); Dmax LAD (Gy); V10–V20–V30 (%) LAD and we correlated these values with parametric and non-parametric tests. Results The Pearson test has showed a statistically significant correlation between Vol breast and V10, V20, V30 with borderline significance (p = 0.006; p = 0.02; p = 0.05). The data were confirmed by testing non-parametric Kendall (tau = 0.004; tau = 0.015; tau = 0.016) and Spearman (rho = 0.003; rho = 0.016; rho = 0.015). We conducted categorizing into quartiles of breast volume and evaluated the correlation with a/b. We have found a significative correlation (p = 0.01) between small Vol breast (≤660.23 cc) and a/b < 0.0821 and greater Vol breast (>660.23 cc) with a/b > 0.0821. From the evaluation of the distribution of V10 in the two groups taking account of the Dmean ≤5 or >5 significance was found with a/b; Chi square 0.009 (0.01). Values ≤5 were observed in women with a/b < 0.0821. Values >5 in women with a/b > 0.0821. Conclusions The geometric conformity of chest thorax considering a/b and the value of 0.0821 ... |
| نوع الوثيقة: |
report |
| اللغة: |
English |
| العلاقة: |
http://www.springerplus.com/content/5/1/841Test |
| الإتاحة: |
http://www.springerplus.com/content/5/1/841Test |
| حقوق: |
Copyright 2016 The Author(s) |
| رقم الانضمام: |
edsbas.6C29C4BC |
| قاعدة البيانات: |
BASE |
