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Analisis Quality Control pada Pesawat MRI 1,5 Tesla di Instalasi Radiologi Rsud Bali Mandara Putri Wirya Febriyani; I Made Lana Prasetya; I Putu Surya Dharma Negara
KOLONI Vol. 5 No. 2 (2026): JUNI 2026
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/koloni.v5i2.922

Abstract

Magnetic Resonance Imaging (MRI) is a diagnostic imaging modality with a high capability to produce optimal soft tissue contrast. The quality of MRI images is strongly influenced by system performance; therefore, routine quality control (QC) is essential to maintain consistency and reliability of imaging results. This study aims to analyze the implementation of QC on a 1.5 Tesla MRI system through artifact evaluation and the application of a visual checklist at the Radiology Installation of RSUD Bali Mandara.This study employed a qualitative design with a survey approach. Data were collected through direct observation of MRI QC procedures, implementation of a visual checklist, and artifact evaluation using a water phantom. Scanning was performed using T1-weighted axial and T2-weighted axial sequences with standard parameters. The results showed that MRI QC procedures were conducted routinely through daily and weekly assessments. The visual checklist evaluation indicated that the MRI system was generally in good condition. Artifact evaluation revealed no artifacts in the phantom images. Environmental parameters, including room temperature (20.33°C), humidity (59.7%), and helium level (93.8%), were within stable and acceptable ranges. In conclusion, the implementation of MRI QC has been carried out effectively through a combination of artifact evaluation and visual checklist. This approach can serve as a practical method for maintaining MRI image quality and supporting reliable diagnostic outcomes in radiology services.
Analisis Prosedur Pemeriksaan MRI Hip Joint pada Kasus AVN Menggunakan Flexible Coil Nurul Syakirah; I Made Lana Prasetya; I Putu Surya Dharma Negara
KOLONI Vol. 5 No. 2 (2026): JUNI 2026
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/koloni.v5i2.946

Abstract

Avascular Necrosis (AVN) is a condition characterized by the death of bone tissue due to impaired blood supply, most commonly affecting the femoral head and potentially leading to progressive structural damage if not diagnosed at an early stage. Magnetic Resonance Imaging (MRI) is the preferred imaging modality for detecting AVN because of its high sensitivity in identifying bone marrow and soft tissue changes. At RSUD Bali Mandara, MRI examinations of the hip joint in AVN cases are performed using a flexible coil, making it necessary to evaluate the examination procedure and the resulting image quality. This study aimed to analyze the MRI hip joint examination procedure in AVN cases using a flexible coil and to assess the diagnostic value of the images produced. A descriptive qualitative research design was employed, with data collected through observation, interviews, and documentation involving two patients who underwent MRI hip joint examinations. The results showed that the examination procedure included patient preparation, equipment preparation, patient positioning, and image acquisition using multiplanar MRI sequences. Based on interviews with radiographers and radiologists, the use of a flexible coil produced images with low noise levels and sufficient quality to clearly demonstrate hip joint anatomy and AVN characteristics. In one patient, MRI revealed signal changes in the femoral head consistent with AVN, while the second patient showed imaging features more indicative of osteoarthritis. It can be concluded that the use of a flexible coil in MRI hip joint examinations provides diagnostically acceptable image quality and can support the diagnosis of AVN when combined with appropriate examination techniques and optimized imaging parameters.