High tangents
WebJan 1, 2005 · High tangents in our study improved the coverage of the superior aspect of the axilla, consistent with the results obtained by Schlembach et al. (8) (Fig. 4). Further … WebHigh Tangent Radiation Therapy With Field-in-Field Technique for Breast Cancer Hidekazu Tanaka1, Masaya Ito 1, Takahiro Yamaguchi, Kae Hachiya , Takahiko Yajima 2, Masashi Kitahara , Katsuya Matsuyama , Satoshi Goshima 1, Manabu Futamura3 and Masayuki Matsuo 1Department of Radiology, Graduate School of Medicine, Gifu University, Gifu, …
High tangents
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WebThe aim of this study is to evaluate the coverage of axillary nodal volumes with high tangent fields (HTF) in breast radiotherapy and to determine the utility of customised blocking. … Forty-one patients were identified who were planned with high tangents using two tangentially opposed beams in the prone position. Patient characteristics are described in Table 1. The median patient age was 62; 46% of patients had left-sided breast cancer. Most patients had invasive ductal carcinoma … See more The mean coverage of the level I and level II axilla defined as the percent volume covered by 90% of the prescription dose was 88.7% (range 30.5–100%, standard deviation 17.9) and 40.0% (range 0–93.1%, standard deviation … See more Outcome data was available for 38 of 41 patients. Two patients were excluded as they did not complete the intended treatment course. One … See more The average of the mean cardiac dose for all patients was 0.87 Gy (0.13 Gy for the left breast and 0.05 Gy for right breast, p< 0.001). The average heart V5Gy was 0.8%, and the average heart … See more Toxicity data was available for 38 of the 41 patients. The median follow-up was 25.6 months since the start of RT. Maximal grade of toxicity throughout the treatment and at a 1-month follow-up with radiation oncology … See more
WebMar 29, 2024 · High tangents are used with supine treatments in patients with the low-volume nodal disease to increase nodal coverage while minimizing toxicities. Our study …
WebInverse tangent (\tan^ {-1}) (tan−1) does the opposite of the tangent. In general, if you know the trig ratio but not the angle, you can use the corresponding inverse trig function to find the angle. This is expressed mathematically in the statements below. Misconception alert! WebCHARLOTTE - MECKLENBURGALL-BLACK SCHOOLS 1852 - 1968. In 1957, four brave African American students crossed the color barrier to integrate Charlotte's city school system. …
WebJan 1, 2024 · High tangent irradiation on the other hand resulted in clearly lower doses in the supra/-infraclavicular region. This is in accordance with Wang et al. on 34 patients who showed that high tangent treatment, contrary to the AMAROS field designs, failed to provide sufficient dose to the supra-/infraclavicular region [23] .
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