clinical and histopathological features of basal cell carcinoma (bcc) may differ according to the type of carcinogen involved. bcc arising from radiotherapy treatment has high incidence and its clinical and histopathological features may be different from bccs caused by other carcinogens. the aim of our study was to investigate any possible association between specific histopathological or clin...

Accuracy of the radiotherapy requires some routine quality control and dosimetry calculations, which would be done by radiotherapy physicists. Due to the increasing use of computers and simulation software in medical science, as well as trends indicating its continued growth, this study aims to develop a new smart-phone application to perform common radiotherapy-related calculations. Computatio...

background: making use of the orthovoltage machines in radiotherapy, is one of the routine methods for the treatment of the superficial lesions. in this study, an important determinant of x-ray quality, the hvl (half value layer), has been evaluated. materials and methods: the hvls of a orthovoltage x-ray machine in 120 and 180 kvp are measured, using an empirical method, in which the hvls are ...

Background: Making use of the orthovoltage machines in Radiotherapy, is one of the routine methods for the treatment of the superficial lesions. In this study, an important determinant of X-ray quality, the HVL (Half Value Layer), has been evaluated. Materials and Methods: The HVLs of a orthovoltage X-ray machine in 120 and 180 kVp are measured, using an empirical method, in which the HVLs are ...

Isaac Brownell, MD, PhD Dermatology Service Nancy Lee, MD, and Alice Ho, MD, MBA Department of Radiation Oncology Memorial Sloan-Kettering Cancer Center New York, NY. Cutaneous melanoma is a lethal malignancy that remains a therapeutic challenge despite an expanding number of advanced treatment options. The only highly effective therapy is early detection and complete surgical excision of local...

Introduction: Successful radiotherapy requires the precise application of a radiation dose to cancerous tissue, which can be achieved by the design of proper treatment methods by radiotherapy physicists. Tasks performed by radiotherapy physicists include verifying the accuracy of dose calculations, correct treatment planning and the proper functioning of accelerators. They are...

Malignancies with a superficial involvement of the scalp present a unique technical challenge for radiation treatment planning. As an example of this, leukemic infiltration of the superficial skin as the only presentation of the disease is a rare entity. For such cases, radiation oncologists have typically treated with 3D conformal radiotherapy with matched electron fields, a technique that can...

Kilovoltage (kV) radiotherapy, also called superficial radiotherapy (SXT) or orthovoltage (DXT), is a well-known and effective treatment option for non-melanoma skin cancer some benign musculoskeletal conditions. Given its surface dose delivery, use in radiation oncology beyond cancers generally limited, but it has been shown to be extremely useful specific palliative applications. Here, we des...

Based on our experience and a review of the literature, we conclude that superficial, well- to moderately differentiated T1 cancers of the anal margin may be successfully treated with radiotherapy alone or local excision. Stage T2 lesions have a significant risk of inguinal lymph node metastases and should be treated with radiotherapy to the primary tumor in conjunction with elective inguinal l...