RELATIVE INTEGRAL DOSE TO THE TARGET & RECTUM IN DIFFERENT RADIOTHERAPY TECHNIQUES FOR CERVICAL CANCER

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HASHEMI MALAYERI B.; GHARAATI H.; ALLAH VERDI POUR FLAH T.; RAJABI H.; JABERI R.

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Journal: Daneshvar Medicine: Basic and Clinical Research Journal Year:2001 | Volume:8 | Issue:34 Page(s): 71-86

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Title

RELATIVE INTEGRAL DOSE TO THE TARGET & RECTUM IN DIFFERENT RADIOTHERAPY TECHNIQUES FOR CERVICAL CANCER

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Keywords

RADIOTHERAPYQ3

INTEGRAL DOSEQ4

ABSORBED ENERGYQ4

RADIOTHERAPY PLANNINGQ4

CERVICAL CANCERQ3

Abstract

The main purpose in RADIOTHERAPY is to convey the highest radiation dose and damage to the target (malignant tissue) and to keep the damage to the normal and healthy surrounding tissues of the target as low as possible. One index that can help us in this regard is the INTEGRAL DOSE representing the total radiation energy absorbed by the irradiated body. Although the INTEGRAL DOSE to the irradiated volume can not solely help choosing the best RADIOTHERAPY technique, it can provide a good measure and a practical guidance in this regard.In this study, by using the CT images from the irradiated area and the RADIOTHERAPY plans of each transactional CT image, planimetric INTEGRAL DOSEs to different organs were determined. Then the energy distributions in irradiated volume were calculated and compared for four different RADIOTHERAPY techniques (10MV with BOX technique and Co -60 with 2-, 4- and 6-field techniques) in two patients with the CERVICAL CANCER. This study indicated that the INTEGRAL DOSE of the target and rectum in both of the patients has the highest value in the 2-field technique and the lowest value in the 4-field technique with Co -60. In addition, the normal and healthy tissues receive the lowest INTEGRAL DOSE in the 6-field technique with Co -60 and the highest dose in the BOX technique with 10 MV. It was concluded that the higher INTEGRAL DOSE observed in the 6-field technique in comparison with the BOX technique was mainly due to the differences in the INTEGRAL DOSE of the normal tissues for these two techniques.Regarding the energy distribution, the 4-field technique showed the best distribution in the normal tissue, but the range of dose variation in the target for this technique was higher than other techniques. On the other hand the BOX technique using higher energy (10MV) indicated the best energy distribution in the target volume with a lower range of dose variation.

Cites

CERVICAL CANCER: KNOWLEDGE OF WOMEN AND THE EFFECT OF EDUCATIONAL MATERIALS

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APA: Copy

HASHEMI MALAYERI, B., GHARAATI, H., ALLAH VERDI POUR FLAH, T., RAJABI, H., & JABERI, R.. (2001). RELATIVE INTEGRAL DOSE TO THE TARGET & RECTUM IN DIFFERENT RADIOTHERAPY TECHNIQUES FOR CERVICAL CANCER. DANESHVAR MEDICINE, 8(34), 71-86. SID. https://sid.ir/paper/30940/en

Vancouver: Copy

HASHEMI MALAYERI B., GHARAATI H., ALLAH VERDI POUR FLAH T., RAJABI H., JABERI R.. RELATIVE INTEGRAL DOSE TO THE TARGET & RECTUM IN DIFFERENT RADIOTHERAPY TECHNIQUES FOR CERVICAL CANCER. DANESHVAR MEDICINE[Internet]. 2001;8(34):71-86. Available from: https://sid.ir/paper/30940/en

IEEE: Copy

B. HASHEMI MALAYERI, H. GHARAATI, T. ALLAH VERDI POUR FLAH, H. RAJABI, and R. JABERI, “RELATIVE INTEGRAL DOSE TO THE TARGET & RECTUM IN DIFFERENT RADIOTHERAPY TECHNIQUES FOR CERVICAL CANCER,” DANESHVAR MEDICINE, vol. 8, no. 34, pp. 71–86, 2001, [Online]. Available: https://sid.ir/paper/30940/en

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