ESTIMATION OF RADIATION EXPOSURE TO THE ORAL MUCOSA DURING SUPERFICIAL RADIOTHERAPY OF CANCER OF THE LOWER LIP USING PERSONAL PROTECTIVE EQUIPMENT

Author: Shevchenko E.V.¹, Galchenko L.I.², Smolin S.A.³

Abstract

The purpose of the study is to evaluate the effectiveness of the shielding of leaded rubber plates in superficial radiotherapy of lower lip cancer of stage I–II. Material and methods. A comparison was made of the timing and severity of oral mucosa and alveolar ridge damage in patients who used and did not use personal protective equipment. Experimental studies were carried out using a tissue-equivalent phantom and thermoluminescent detectors LiF activated by Mg and Ti. The summary doses received by the alveolar are calculated. Results and discussion. The total dose of X-ray radiation to the alveolar ridge in the absence of shielding is 64, 38 and 16 Gy for 1.0, 1.5 and 2.0 cm thick lip, respectively. The obtained values of the absorbed doses with personal protective equipment indicate a high shielding ability of the lead rubber used in the clinic. The use of shielding devices for superficial radiotherapy of lower lip cancer can improve the quality of life, reduces the duration and severity of radiation damage.

Key words

superficial radiotherapy, lower lip cancer, personal protective equipment, radiation safety, radiation exposure

References

Fadeeva M.A., Kostromina K.N., Datsenko V.S. Time-dose-fractionation factor and their use in radiotherapy of malignant tumors: guidelines. Moscow, 1987. 36 p. [In Russian].

Ivanov S.A., Okuncev D.V., Ivanova O.V. Results of radiation treatment of primary non-metastatic lower lip cancer. Problemy zdorov'ya i ekologii = Health and Environment Issues. 2011; 27 (1): 130-136. [In Russian].

Khan F.M., Gibbons J.P. Khan's the physics of radiation therapy. Lippincott, Williams & Wilkins, 2014. 584 p.

Lindenbraten L.D., Korolyuk I.P. Medical radiology (fundamentals of radiation diagnosis and therapy). Second edition, revised and updated. Moscow: Meditsina, 2000. 667 p. [In Russian].

Palmans H., Andreo P., Huq M.S., Seuntjens J., Christaki K.E., Meghzifene A. Dosimetry of small static fields used in external photon beam radiotherapy: Summary of TRS‐483, the IAEA–AAPM international Code of Practice for reference and relative dose determination. Medical Physics. 2018; 45 (11): e1123-e1145. doi: 10.1002/mp.13208

Pereslegin I.A., Podlyashchuk E.L., Ustinova V.F. Clinical X-ray radiology (manual). Vol. 5. Radiation therapy of tumor and non-tumor diseases. Ed. G.A. Zedgenidze. Moscow: Meditsina, 1985. 496 p. [In Russian].

Radiation therapy for skin cancer. Eds. A.B. Cognetta, W.M. Mendenhall. Dordrecht: Springer, 2013. 256 p.

Radiation therapy on the short-distance apparatus RUM-21M. Guidelines. Eds. E.L. Podlyashchuk, V.F. Ustinova, A.V. Frolov. Moscow, 1986. 16 p. [In Russian].

Ruderman A.I. Near-focus radiotherapy. Moscow: Meditsina, 1968. 234 p. [In Russian].

Therapeutic radiology: a national guide. Eds. A.D. Kaprin, Yu.S. Mardynsky. Moscow: GEOTAR-Media, 2018. 704 p. [In Russian].

Vasil'ev V.N., Kokoncev A.A. Dosymetry of radiation of x-ray treatment device «Rentgen TA–02». Meditsinskaya fizika = Medical Physics. 2008; 40 (4): 20-28. [In Russian].

Wolfe C.M., Cognetta A.B. Superficial/soft radiation therapy for nonmelanoma skin cancer. In: Evidence-Based Procedural Dermatology. Ed. M. Alam. Springer Nature Switzerland AG, 2019. 585-626. doi: 10.1007/978-3-030-02023-1_36.

Wong H. M. Oral complications and management strategies for patients undergoing cancer therapy. ScientificWorldJournal. 2014; 2014: 581795. doi: 10.1155/2014/581795.

About Authors (Correspondence):

Smolin S.A., e-mail: millennium_s@mail.ru

Full Text

snmzh_5-2019_shevchenko_i_dr.pdf

Received: 30/10/2019

Accepted: 30/10/2019