Effect of internal port on dose distribution in post-mastectomy radiotherapy for breast cancer patients after expander breast reconstruction.

Background: In patients with expander-based reconstruction a few dosimetric analyses detected radiation therapy dose perturbation due to the internal port of an expander, potentially leading to toxicity or loss of local control. This study aimed at adding data on this field.

Materials And Methods: A dosimetric analysis was conducted in 30 chest wall treatment planning without and with correction for port artifact.

Pulmonary function in stereotactic body radiotherapy with helical tomotherapy for primary and metastatic lung lesions.

Aims: This retrospective study reports outcomes after stereotactic body radiation therapy (SBRT) as delivered by helical tomotherapy (HT) for lung lesions. It promotes a dose escalation program.

Methods: Histological and/or radiological findings and/or case histories identified 41 primary and 15 metastatic lesions.

Evaluation of equivalent dose to eye lens through dose equivalent Hp(3).

Purpose: Individual dosimetry allows to quantify doses from ionizing radiation of exposed workers. Scientific and epidemiological evidences highlight the need for adequate measures for a greater protection of the eye and a reduction in annual doses. ICRP Publication 103, illustrating the operational dose quantity Hp(d) for the individual monitoring, proposes a depth d = 3 mm for eye lens monitoring, indicating that even the Hp(0.

Gamma camera calibrations for the Italian multicentre study for lesion dosimetry in Ra therapy of bone metastases.

Purpose: The aim was to calibrate gamma cameras in the framework of the Italian multicentre study for lesion dosimetry in Ra therapy of bone metastases. Equipments of several manufacturers and different models were used.

Methods: Eleven gamma cameras (3/8- and 5/8-inch crystal) were used, acquiring planar static images with double-peak (82 and 154keV, 20% wide) and MEGP collimator.