PURPOSE To present the results of dose homogeneity analysis for breast cancer patients treated with image-based conformal interstitial brachytherapy, and to investigate the usefulness of the ICRU recommendations. MATERIAL AND METHODS Treatment plans of forty-nine patients who underwent partial breast irradiation with interstitial brachytherapy were analyzed. Quantitative parameters were used ...

ABSTRACT Background: Coherent scattering leads to diffraction effects and especially constructive interferences. Theseinterferences carry some information about the molecular structure of the tissue. As breast cancer isthe most widespread cancer in women, this project evaluated the application of small angleX-ray scattering (SAXS) for differentiation between normal and cancerous breast tissues....

Purpose: Dosimetric analysis and effect of different definitions prescription point “A” to OAR in high dose rate brachytherapy for cervical cancer. Methods Materials: This retrospective comparative dosimetric study is based on the data 25 patients with histologically proven carcinoma treated HDR (high-dose-rate) brachytherapy. Patients received 21 Gy three fractions (7.0 X fractions) A (AMAN, r...

abstract background: coherent scattering leads to diffraction effects and especially constructive interferences. theseinterferences carry some information about the molecular structure of the tissue. as breast cancer isthe most widespread cancer in women, this project evaluated the application of small anglex-ray scattering (saxs) for differentiation between normal and cancerous breast tissues....

ACR American College of Radiology, CRCPD Conference of Radiation Control Program Directors, FDA Food and Drug Administration, ICRU International Commission on Radiation Units and Measurements, IEC International Electrotechnical Commission, IRP interventional reference point, Ka,r total air kerma at the interventional reference point, NCRP National Council on Radiation Protection and Measurement...

Digital breast tomosynthesis (DBT) is an emerging technique that allows for slices parallel with the detector to be constructed through the breast, as opposed to two dimensional mammography. Present phantoms for use on mammography systems are two dimensional in nature and focus mainly on differences in contrast. Since tomosynthesis is a three-dimensional-technique, a suitable phantom for use on...

background: delivering the maximum dose to tumor while achieving the minimum dose delivery to normal tissue; is the most important goal in external radiotherapy. diode in vivo dosimetry is widely considered to be an important tool for quality improvement of patient care in external radiotherapy. uncertainty in dose delivery should fall within 5% of the prescribed dose as recommended by internat...

Background: In treating patients with radiation, the degree of accuracy for the delivery of tumor dose is recommended to be within ± 5% by ICRU in report 24. The experimental studies have shown that the presence of low-density inhomogeneity in areas such as the lung can lead to a greater than 30% change in the water dose data. Therefore, inhomogeneity corrections should be used in treatment pla...

background: in treating patients with radiation, the degree of accuracy for the delivery of tumor dose is recommended to be within ± 5% by icru in report 24. the experimental studies have shown that the presence of low-density inhomogeneity in areas such as the lung can lead to a greater than 30% change in the water dose data. therefore, inhomogeneity corrections should be used in treatment pla...