Postoperative Radiotherapy For Breast Cancer Research Articles

Reconstructions from a Nonstandard CT Scanner

A position sensitive detector of novel design has been developed to permit CT information to be obtained using a radiotherapy simulator. The scanner has been engineered to obtain the outline of high contrast internal anatomy such as lung tissue and external body contour for the purpose of assisting radiation treatment planning including inhomogeneity corrections. The mode of operation of the scanner is described and the novel reconstruction problem presented by this scanner is discussed. Clinical images are shown which illustrate the usefulness of this scanner in assisting in the conservative management of patients receiving postoperative radiotherapy for breast cancer.

Postoperative radiotherapy in breast cancer

Postoperative radiotherapy in breast cancer

The Therapeutic Value of Postoperative Radiotherapy in Breast Cancer

The Therapeutic Value of Postoperative Radiotherapy in Breast Cancer

The role of postoperative radiotherapy in breast cancer

The role of postoperative radiotherapy in breast cancer

The effect of post-operative radiotherapy in breast cancer

The results of a randomized clinical trial concerning the value of post-operative radiotherapy as an adjuvant to radical mastectomy, are presented in this manuscript. A total of 1090 patients have entered the study. In the first part a conventional roentgen unit was used, and in the second part a 60Co unit, with considerably increased dosage and altered treatment plan. No effect of post-operative radiation was demonstrated in Stage I regarding survival, disease-free survival, local recurrence, regional and distant metastases. In Stage II roentgen irradiation reduced the incidence of local recurrences and regional metastases, whereas the survival was not affected. Besides reduction of local and regional metastases 60Co radiation in patients with Stage II disease also reduced significantly the relapse rate as well as the cumulative survival rate up to 5 years. Thus, the results indicate that the radiation dose is of significance. Further analyses suggest, particularly in patients with medially located tumors who have 4 or more axillary lymph nodes involved, that the prognosis will be improved by post-operative radiotherapy in adequate doses.

Criteria for Postoperative Radiotherapy in Breast Cancer

Criteria for Postoperative Radiotherapy in Breast Cancer