Abstract
Objective
We studied the relationship between impact of dose distribution and energy of radioactive ray in teletherapy with contraceptive ring.
Methods
The SI Virtual Water Phantom was used to monitor medium of dose. PTW ionization chamber was used to detect the dose. AP-PA (10 cm × 10 cm) and SAD technique were adopted. Monitoring dose of different locations with different energy of radioactive ray in AP and PA respectively with and without contraceptive ring, repeated 5 times.
Results
Dose of with contraceptive ring was lower than that of without contraceptive ring in AP 6 MV-X-ray (P < 0.05), while in PA was no obvious difference (P > 0.05). Dose of except for the center was higher than that of without contraceptive ring in AP and PA 15 MV-X-ray (P < 0.05). For locations, doses of the upper, the left and right were higher than that of the center in AP 6 MV-X-ray (P < 0.05), while in PA was lower (P > 0.05). In AP and PA 15 MV-X-ray, doses of the upper, the left and right was higher than that of the center (P < 0.05).
Conclusion
Metallic contraceptive ring would effect the dose distribution of radioactive ray, but influence degree related to locations of contraceptive ring and energy of radioactive ray.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Selinger CP, Ellul P, Smith PA, et al. Oesophageal stent insertion for palliation of dysphagia in a District General Hospital: experience from a case series of 137 patients. QJM, 2008, 101: 545–548.
Burstow M, Kelly T, Panchani S, et al. Outcome of palliative esophageal stenting for malignant dysphagia: a retrospective analysis. Dis Esophagus, 2009, 22: 519–525.
Schäfer H, Hölscher AH. Palliative endoscopic therapy of esophageal cancer. Chinese-German J Clin Oncol, 2004, 3: 263–264.
Li XA, Chibani O, Greenwald B, et al. Radiotherapy dose perturbation of metallic esophageal stents. Int J Radiat Oncol Biol Phys, 2002, 54: 1276–1285.
Creinin MD, Meyn LA, Borgatta L, et al. Multicenter comparison of the contraceptive ring and patch: a randomized controlled trial. Obstet Gynecol, 2008, 111: 267–277.
Gillam L, McDonald R, Ebling FJ, et al. Human 2D (index) and 4D (ring) finger lengths and ratios: cross-sectional data on linear growth patterns, sexual dimorphism and lateral asymmetry from 4 to 60 years of age. J Anat, 2008, 213: 325–335.
Fine PM, Tryggestad J, Meyers NJ, et al. Safety and acceptability with the use of a contraceptive vaginal ring after surgical or medical abortion. Contraception, 2007, 75: 367–371.
Kim JH, Song HY, Shin JH, et al. Palliative Treatment of unresectable esophagogastric junction tumors: balloon dilation combined with chemotherapy and/or radiation therapy and metallic stent placement. J Vasc Interv Radiol, 2008, 19: 912–917.
Salminen P, Gullichsen R, Laine S. Use of self-expandable metal stents for the treatment of esophageal perforations and anastomotic leaks. Surg Endosc, 2009, 23: 1526–1530.
White RE, Parker RK, Fitzwater JW, et al. Stents as sole therapy for oesophageal cancer: a prospective analysis of outcomes after placement. Lancet Oncol, 2009, 10: 240–246.
Chu J, Jin J, Ni S. Radiation field feature of 188Re esophageal stent. Nucl Med Commun, 2008, 29: 462–464.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zhang, J., Luo, H., Yang, B. et al. Relationship between impact of dose distribution and energy of radioactive ray for metal contraceptive ring. Chin. -Ger. J. Clin. Oncol. 9, 482–485 (2010). https://doi.org/10.1007/s10330-010-0602-9
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10330-010-0602-9