Comparison of imaging modalities for the accurate delineation of arteriovenous malformations (AVM) and evaluation of setup accuracy with reference to non-invasive LINAC-based stereotactic radiosurgery (SRS).

Aims: To compare the accuracy of nidus delineation using magnetic resonance angiography (MRA) to digital subtraction angiography (DSA) and to evaluate setup accuracy of non-invasive frame SRS treatments.

Settings And Design: A prospective observational study of 16 patients who underwent non-invasive frame LINAC-based SRS for brain AVMs.

Materials And Methods: The nidus was separately delineated using DSA and MRA after co-registration onto CT simulation images and compared with respect to their volume and maximum diameters.

Does addition of postmastectomy radiotherapy improve outcome of patients with pT1-2, N0 triple negative breast cancer as compared to breast conservation therapy?

Background: Triple-negative breast cancers (TNBCs) form a heterogeneous group of cancers typically exhibiting an aggressive behavior resulting in increased risk of locoregional relapse (LRR) and distant metastases. The effect of radiotherapy on LRR risk and overall survival (OS) in women treated with mastectomy alone for early-stage TNBC remains unclear.

Aim: The aim of this study is to compare the locoregional recurrence rate, disease-free survival (DFS), and OS following breast conservation therapy (BCT) or modified radical mastectomy (MRM) alone in women with stage I and IIA TNBC and to assess the impact of tumor and treatment-related factors.

The impact of patient positioning and use of belly board on small bowel toxicity in patients receiving pelvic radiotherapy for gynecological malignancies.

Aim: To determine the efficacy of belly board device in patients receiving postoperative radiation for gynecological malignancies in terms of setup error and acute small bowel toxicity.

Materials And Methods: Patients requiring postoperative radiation for gynecological malignancies were prospectively randomized to either treatment with supine position (supine arm) or prone position using belly board (prone arm). Each patient underwent computed tomography simulation in the assigned treatment position, and a three-dimensional conformal radiation was planned.