Archive

February 2014

Skin reactions during radiation therapy preventable

Auckland Radiation Oncology has recently participated in research with the University of Otago, with regard to the prevention of severe skin reactions during radiation therapy by applying a thin transparent silicone dressing to the skin from the first day of treatment.
Category News

Radiation treatment improves survival for adults with a slow-growing type of brain tumor

Adults with low-grade gliomas, a form of brain tumor, who received chemotherapy following completion of radiation therapy lived longer than patients who received radiation therapy alone, according to long-term follow-up results from a NIH-supported randomized controlled clinical trial. Low-grade gliomas have a more indolent or slower growing behavior and better outcome compared to the more common high-grade gliomas such as glioblastoma
Category News

World Cancer Day 2014 - 3 News interview

Talking about the 'C' word - World Cancer Day February 4th 2014



 

ARO becomes Reference Site for RaySearch

Auckland Radiation Oncology has been designated as the first reference site in the Southern Hemisphere for RaySearch’s RayStation planning system.

Two Regimens for Patients with Non-small Cell Lung Cancer

There are patients with stage I–III non-small cell lung cancer (NSCLC) who are not suitable for curative radical chemoradiation therapy. There are patients with an isolated solitary extracranial metastasis who have improved outcomes compared with those with cranial or multiple metastases. Patients of good performance status receiving moderate dose radiation therapy have improved survival. Two regimens of moderate dose chemoradiation therapy for such patients were compared in a randomized phase II trial.

MANAGEMENT OF OROPHARYNGEAL CANDIDIASIS

The aim of this pharmaco-epidemiological study was to evaluate the prevalence of oropharyngeal candidiasis (OPC) in cancer patients treated with chemotherapy and/or radiotherapy.

An Approach to Prostate Segmentation on MR Images

Prostate segmentation on MR images attracted greater research interest in recent years, with the introduction of conformal radiotherapy (CRT) and intensity modulated radiotherapy (IMRT) for prostate cancer. Accurate delineation of tumor target volume and organs at risk becomes increasingly important in radiotherapy treatment planning. However, it is difficult to perform fully automated segmentation in T2-weighted images because the signal intensity within the prostate is inhomogeneous as it reflects the underlying characteristics of the glandular tissue [1]. The interface between the prostate and the rectum and bladder is not always clear.

Current Role and Future Perspectives of Magnetic Resonance Spectroscopy

Further to the development of three-dimensional (3D) conformal, intensity-modulated, image-guided, adaptive radiation therapy, major changes have occurred in the last three decades in the treatment planning of nonmetastatic prostate cancer. These techniques have significantly improved treatment precision, allowing for greater sparing of critical organ and delivery of escalated doses of radiation to the target volume.

Quality assessment for VMAT prostate radiotherapy

The majority of commercial radiotherapy treatment planning systems requires planners to iteratively adjust the plan parameters in order to find a satisfactory plan. This iterative trial-and-error nature of radiotherapy treatment planning results in an inefficient planning process and in order to reduce such inefficiency, plans can be accepted without achieving the best attainable quality.

We propose a quality assessment method based on data envelopment analysis (DEA) to address this inefficiency. This method compares a plan of interest to a set of past delivered plans and searches for evidence of potential further improvement.

Scintigraphic evaluation of oesophageal transit during radiotherapy

To quantitatively evaluate radiation-induced impaired oesophageal transit with oesophageal transit scintigraphy and to assess the relationships between acute oesophagitis symptoms and dysmotility.