scholarly journals Dose-volume histogram constrains for small intestine in postoperative transcutaneous radiotherapy of endometrial carcinoma: comparison between conventional and conformal techniques

2013 ◽  
Vol 3 (2) ◽  
pp. 82-87
Author(s):  
Anela Ramić ◽  
Dženita Ljuca ◽  
Goran Marosević
Keyword(s):  
Small Intestine ◽  
Maximum Dose ◽  
Three Dimensional ◽  
Conformal Radiotherapy ◽  
Dose Volume Histogram ◽  
Dose Volume ◽  
Clinical Center ◽  
The Difference ◽  
Paired T Test ◽  
Medium Dose

Introduction: The aim of this study was to determine the dose-volume histogram (DVH) constrains of conventional and conformal transcutaneous radiotherapy for small intestine and perform their comparison.Methods: This retrospective-prospective study included patients who were treated for endometrial cancer using conventional transcutaneous radiotherapy at the Department of Radiotherapy Clinic of Oncology,Hematology and Radiotherapy, University Clinical Center Tuzla in the period from 2009 to 2011. The study was performed on patients of all ages suffering from this condition. The study involved 35 patients. DVHparameters which were analyzed are: minimum dose (Dmin), maximum dose (Dmax), medium dose (Daver) of the small intestine, as well as the volume of the small intestine, which is included in 75%, 95% and 100%dose (V33,75Gy, V42,75Gy, V45Gy) expressed in percentages and cubic centimeters of the affected organ. Working hypothesis was tested with paired t test. The difference between the variables at the level of p <0.05 was considered statistically significant.Results: DVH constrains of transcutaneous conformal radiotherapy showed signifi cantly smaller dose contribution on small intestine than DVH parameters of conventional transcutaneous radiotherapy (p<0.0001).Conclusion: The dose contribution on small intestine was signifi cantly lower by planning three-dimensional conformal transcutaneous radiotherapy in comparison to the conventional planning.

Development of multifield three-dimensional conformal radiotherapy of lung cancer using a total lung dose/volume histogram

1995 ◽  
Vol 3 (5) ◽  
pp. 243-255 ◽  
Author(s):  
Joel S. Greenberger ◽  
Andre Kalend ◽  
Frank Sciurba ◽  
James R. Jett ◽  
Rodney Landreneau ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Three Dimensional ◽  
Conformal Radiotherapy ◽  
Dose Volume Histogram ◽  
Lung Dose ◽  
Dose Volume ◽  
Three Dimensional Conformal Radiotherapy

Relationship Between Weightbearing Ankle Dorsiflexion Passive Range of Motion and Ankle Kinematics During Gait

2017 ◽  
Vol 107 (1) ◽  
pp. 39-45 ◽  
Author(s):  
Min-Hyeok Kang ◽  
Jae-Seop Oh
Keyword(s):  
Range Of Motion ◽  
Three Dimensional ◽  
Knee Extension ◽  
Ankle Dorsiflexion ◽  
Physically Active ◽  
Ankle Kinematics ◽  
The Difference ◽  
Analysis System ◽  
The Relationship ◽  
Paired T Test

Background: Measurement of weightbearing ankle dorsiflexion (DF) passive range of motion (PROM) has been suggested as a way to estimate ankle kinematics during gait; however, no previous study has demonstrated the relationship between ankle DF during gait and ankle DF PROM with knee extension. We examine the relationship between maximum ankle DF during gait and nonweightbearing and weightbearing ankle DF PROM with knee extension. Methods: Forty physically active individuals (mean ± SD age, 21.63 ± 1.73 years) participated in this study. Ankle DF PROM with knee extension was measured in the nonweightbearing and weightbearing conditions; maximum ankle DF during gait was assessed using a three-dimensional motion analysis system. The relationship between each variable was calculated using the Pearson product moment correlation coefficient, and the difference in ankle DF PROM between the nonweightbearing and weightbearing conditions was analyzed using a paired t test. Results: The weightbearing measurement (r = 0.521; P &lt; .001) for ankle DF PROM showed a greater correlation with maximum ankle DF during gait than did the nonweightbearing measurement (r = 0.245; P = .029). Ankle DF PROM was significantly greater in the weightbearing than in the nonweightbearing condition (P &lt; .001) despite a significant correlation between the two measurements (r = 0.402; P &lt; .001). Conclusions: These findings indicate that nonweightbearing and weightbearing measurements of ankle DF PROM with knee extension should not be used interchangeably and that weightbearing ankle DF PROM with the knee extended is more appropriate for estimating ankle DF during gait.

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