A pilot study on the effect of localised irradiation applied to the site of a standard perforating injury in the rabbit eye, showed that gamma rays limited the formation of post-traumatic vitreoretinal membranes. A controlled study was therefore undertaken to confirm this observation. Twenty-four pairs of rabbits underwent a standard perforating injury in the right eye. One rabbit of each pair ...

In order to obtain a highly concentrated, pure and super-hot [ƒÁ-32P]ATP, we improved the purification method of super-hot [ƒÁ-32P]ATP which was synthesized by the method of Johnson and Walseth (1979). The super-hot [ƒÁ-32P]ATP was synthesized in a relatively large volume (2 ml) of reaction mixture and purified using semi-micro scale anion exchange chromatography (Dowex 1•~2, 60-70ƒÊl column vo...

Upon illumination of spinach chloroplasts in the presence of [32P]orthophosphate and AMP and absence of substrate ADP, coupling factor-bound [32P]ADP is formed. This bound r3’P]ADP is stable enough to withstand purification of the coupling factor to homogeneity. However, the ability of this specially bound [““PIADP to serve as the ultimate phosphoryl donor to substrate ADP for the synthesis of ...

Background: Intraoperative radiation therapy (IORT) technique is used to treat a surgically exposed tumor or tumor bed in the treatment of locally advanced intraabdominal, retroperitoneal, pelvic, thoracic, breast and soft tissue tumors. One way to perform IORT is to use an existing linac and modify the treatment head using an applicator system. In this study the objectives were to design, and ...

Three dimensional planning for high-dose-rate (HDR) brachytherapy in cervical cancer has been highly recommended by consensus guidelines such as the American Brachytherapy Society (ABS) and the Groupe Européen de Curiethérapie - European Society for Radiotherapy and Oncology (GEC-ESTRO). In this document, we describe our experience with computed tomography (CT)-based planning using the tandem/r...

I T HAS been recognized that intracavi-tary irradiation is essential in the treatment of carcinoma of the uterine cervix. Since the beginning of the present century3 many applicators have been used to irradiate the uterus and vagina and later several afterloading techniques have been de-scnibed. " 4 Some of the techniques involve the use of remote control5 " and linear distribution of the sourc...

Equilibration of the phosphorus in radioactive phosphoric acid with the phosphorus in phosphorus oxychloride occurs if these compounds are refluxed together for approximately 24 h. This observation led us to develop a method for the preparation of radioactive phosphorus oxychloride on a small scale with high specific radioactivity. The labeled phosphorus oxychloride may be utilized directly in ...

Progesterone receptor from an oviduct tissue mince incubated with (32P)orthophosphate was purified using affinity chromatography, gel filtration, and DEAE-Sephadex chromatography. Two receptor peaks were eluted from the DEAE column. Peak I contained one major protein band with a molecular weight of 90,000 and a 32P band at 90,000. Peak II also had a major 90,000-dalton protein band and a 32P ba...