Padang — Adjusting the radiation field size in radiographic examinations has been proven to significantly affect image contrast quality, according to a 2026 publication by Cicillia Artitin, Nerifa Dewilza, M Redho Agustri, and Berliana Eka Putri from Universitas Baiturrahmah.
The study highlights the importance of collimation techniques in radiology to enhance image quality while minimizing radiation exposure to patients. In medical imaging, accurate image contrast is essential for precise diagnosis.
Radiography relies on X-ray technology to visualize internal body structures. However, the quality of the resulting image depends not only on the equipment but also on the technical skills of radiographers, particularly in controlling the radiation field size.
The findings reveal that excessively wide radiation fields increase scattered radiation, which reduces image contrast and clarity.
Conversely, limiting the radiation field through proper collimation reduces scatter radiation, allowing clearer differentiation between tissues and improving overall image quality.
The program was conducted on September 17, 2024, at the Radiology Installation of RSI Ibnu Sina Padang, involving all radiographers. The activity included presentations, interactive discussions, and case-based demonstrations comparing radiographic images with different field sizes.
Participants showed improved understanding of how radiation field size affects image contrast and recognized the importance of applying proper collimation techniques in daily practice.
The study also emphasizes the importance of radiation protection principles, particularly the ALARA concept (As Low As Reasonably Achievable), which aims to minimize radiation exposure without compromising diagnostic quality.
In practice, radiographers sometimes use wider radiation fields to avoid repeat imaging. However, this approach increases patient radiation dose and reduces image quality, making it less effective in clinical settings.
Cicillia Artitin from Universitas Baiturrahmah explained that proper collimation not only enhances diagnostic accuracy but also ensures patient safety by reducing unnecessary radiation exposure.
The findings highlight the need for continuous professional training in radiology departments to improve technical skills and maintain high standards in medical imaging.
Hospitals and healthcare institutions are encouraged to strengthen training programs on collimation techniques and radiographic optimization to improve both service quality and patient safety.
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