Correcting for the effect of ambient pressure fluctuations on measured output from a linear accelerator with a sealed monitor chamber.

Ambient pressure fluctuations deform the walls of a sealed monitor chamber in a linear accelerator (LINAC) and affect the output. This study retrospectively quantified the output variations accompanying ambient pressure fluctuations in a LINAC equipped with a sealed monitor chamber and introduced a novel approach of calculating the adjusted output free from the effect of ambient pressure fluctuations.The output data for the 6 MV and 10 MV X-rays measured between March 2014 and September 2015 were analysed.

Quantitative assessment of radiodermatitis through a non-invasive objective procedure in patients with breast cancer.

Assessment of skin condition is necessary for providing advice regarding skin self-care to patients with breast cancer who have undergone radiation therapy. Acute and chronic phases of radiodermatitis were analyzed in patients using objective assessment tools in the present study. A total of 18 women who received radiation therapy for breast cancer were enrolled in the present study and their skin surface temperature (SST), hydration level of the skin surface (HL), melanin intensity (MI) and erythema intensity (EI) were measured prior to radiation therapy and six months thereafter.

Technical note: improved positioning protocol for patient setup accuracy in conventional radiotherapy for lung cancer.

This study aimed to investigate an improved setup protocol for maintaining patient setup accuracy, with minimal or no use of image-guided radiation therapy in conventional radiotherapy for lung cancer. A coordinate value for the treatment couch in the anterior-posterior (AP) direction was obtained from the first fraction using bony anatomy image guidance. The coordinate value was invariably used for patient positioning in the second and subsequent treatment fractions.

[Metastasis of uterine cervical cancer to the biceps muscle of right upper arm; report of a case].

A hematogenic metastasis to the biceps muscle of right upper arm was reported in a 48-year-old women with recurrent uterine cervical cancer who had undergone radiotherapy. Cancer metastasis to the limb skeletal muscle is very rare. We have not known the similar case report in uterine cervical cancer.

[Results of combined therapy of irradiation and intra-arterial one-shot injection of cisplatin for head and neck cancers].

Thirty-six previously untreated cases of head and neck cancer were given a combined therapy of irradiation and intra-arterial, one-shot injection of Cisplatin. As a result, the primary lesions in 35 cases were seen to achieve a 66% complete remission (CR) and a 100% overall response (OR). The lymph metastases in twenty-one cases with positive node achieved a 62% CR and a 100% OR.