ESTRO 2024 - Abstract Book

S2733

Interdisciplinary - Global health

ESTRO 2024

the department. In 2022, we treated nearly 292 patients, performed 21 brachytherapy sessions and delivered 5001 fractions of radiotherapy.

We meticulously tabulated all the existing equipment at our center, including major treatment machines (Linac, simulator and brachytherapy machines) and units such as TPS and other associated computers, printers, and other electronic gadgets. Similarly, all the general electrical equipment, including lights and air-conditioning, were noted along with their wattage. However, for carbon footprint calculation purpose, we relied on the more objective electrical meter reading of the department, as provided by the concerned section of the hospital (Table 1). We also recorded the to and fro travel frequency, mode of travel, and distance (calculated by using google map) of each department staff person and patient from their residence to the hospital. Subsequently, Online tools/links and existing literature were used to convert the acquired parameters into CO2 emissions [6-8].

Table 1:- Electricity consumption and related CO2 emission of our department for one year (January 2022 to December 2022)

Radiation Oncology Department annual electricity consumption

Yearly CO2 emission (tCO2)

S.No

Name of Equipment

Yearly KWH

1 2 3 4

HVAC

52260

35.15

Lighting

5892

3.96

Equipment’s

41557

27.95

Machine

198960 298669

133.84 200.91

Total

HVAC heating, ventilation, and air conditioning, KWH kilowatt-hour, tCO2- tonnes of carbon dioxide

Results:

The total CO2 emission in the year (related to electrical equipment, servers, machines, SF6 gas and others being used) was 200.91 tCO2. In all, there are 15 departmental personnel working in our department. CO2 emission from their daily commute to the hospital annually was 5.06 tCO2. The Carbon dioxide footprint generated by the patients and their attendants reporting to our center for daily radiotherapy treatment annually was 66.44 tCO2. In all, the total departmental cumulative CO2 emission of our department was 272.41 tCO2 per year (Figure 1).

Figure 1:- Annual CO2 emission