A cosmological model was developed using the equation of state photon gas, as well cosmic time. The primary objective this is to see if determining observed rotation speed galactic matter possible, without dark (halo) a parameter. To do so, numerical application evolution variables in accordance with time and new determine precise, realistic values for number parameters, such energy universe U,...

Purpose: To quantitatively evaluate four different Proton SFUD PBS initial planning strategies for lung mobile tumor. Methods and Materials: A virtual lung patient’s four-dimensional computed tomography (4DCT) was generated in this study. To avoid the uncertainties from target delineation and imaging artifacts, a sphere with diameter of 3 cm representing a rigid mobile target (GTV) was inserted...

Twice-daily thoracic radiotherapy (TRT) with concurrent chemotherapy is standard for limited-stage small-cell lung cancer (LS-SCLC). However, the importance of twice-daily simultaneous integrated boost intensity-modulated (SIB-IMRT) has not been clearly defined in LS-SCLC. Therefore, we compared SIB-IMRT dose escalation (54 Gy) to gross tumor volume versus conventional (IMRT) standard-dose (45 ...

PURPOSE To perform a cost-utility analysis utilizing a cooperative group protocol and constrasting the results with the published quality adjusted survival. METHODS AND MATERIALS A cost-utility analysis was performed on Radiation Therapy Oncology Group (RTOG) protocol 83-02. The quality-adjusted survival has been published previously. Pretreatment tests and chemotherapy costs are not consider...

To compare the effects of 60 Gy/10 fractions (twice a day) with those of 54 Gy/9 fractions in high-dose-rate interstitial brachytherapy (HDR-ISBT) for early tongue cancer, we performed a matched-pair analysis of patients with early tongue cancer (T1-2N0M0), who were treated with 60 or 54 Gy of radiation between 1996 and 2004. Seventeen patients treated with 54 Gy and 34 matched-pair patients tr...

Background: Breast cancer is becoming more frequently diagnosed at early stages with improved long term outcomes. Radiation-related heart disease and lung cancer can occur following radiotherapy for breast cancer. The aim of this study was to evaluate some dosimetric parameters of heart and lung during whole breast radiotherapy. Methods:Twenty five consecutive...

Background—Long-term biological effects of ionizing radiation on coronary arteries remain poorly defined. We examined late arterial responses 6 months after balloon angioplasty and -radiation in normal pig coronary arteries. Methods and Results—Coronary arteries of 25 adult pigs were randomized to receive 20 Gy (n 8) or 30 Gy (n 9) of Re -radiation or sham radiation (n 8) immediately after ball...