The aim of this research is to determine the Lumbar MRI examination procedure in LBP cases at the Bogor City Regional Hospital, namely STIR and Myelo Radial, the aim of which is to clearly see abnor malities in the intervertebral discs and stenosis in the cerebral spinal cord. This type of research uses descriptive qualitative methods with a case study approach. Data collection methods are carried out through observation, interviews and documentation. Then data analysis was carried out using open coding charts, so that conclusions could be drawn. The results of this study show that the Lumbar MRI examination procedure in cases of Low Back Pain (LBP) at the Bogor City Regional Hospital does not require special preparation, the patient comes to radiology for screening (installation of a pacemaker). The patient removes clothing and metal objects. Before the examination, the patient is asked to urinate first, the patient's position is supine (feet first), iso center 5 cm superior to the ASIS. Then it is briefly explained that during the examination you are not allowed to move and the duration of the examination is 15 minutes and the role of the sagittal STIR sequence and Myelo Radial. The role of the sagittal STIR sequence and myelo radial to suppress fat in the cerebral spinal fluid, conus medullaris and myelum in the spinal cord and to see masses Lesions and stenosis caused by narrowing of the bulging in the intervertebral disks are clear enough to provide a Lumbar MRI image for cases of Low Back Pain (LBP).
 

Background: CT scans are used for various types of examinations such as examinations of the head, thorax, abdomen and so on. The most frequently performed CT scan is a CT scan of the head. However, in the medical field, especially radiology, CT scans have the highest dose compared to other radiation equipment. Efforts to reduce radiation doses and radiation effects are by estimating the correct dose given to CT Scan patients using an optimization index called DRL (Diagnostic Level Reference), namely by evaluating the values ​​of CTDIvol and DLP on CT scans of the head, which have been determined in accordance with BAPETEN/I-DRL 2021 standards.
Method: This research is a descriptive quantitative study with an observational approach which aims to analyze CTDIvol and DLP values ​​based on retrospective data on non-contrast brain CT scans at the Radiology Installation at Hospital X, Central Jakarta.
Results: Calculation of the 2nd quartile (50th percentile) value of CTDIvol and DLP in Adult Non-Contrast Brain CT Scan examinations for the January-December 2022 Period at the Radiology Installation at X Hospital, Central Jakarta is CTDIvol 55.51 mGy and DLP 867.00 mGy* cm.
Conclusion: The 50 percentile value of CTDIvol and DLP in the Adult Non-Contrast Brain CT Scan examination for the January-December 2022 period at the Radiology Installation at X Hospital, Central Jakarta is in accordance with the standards set by BAPETEN/I-DRL 2021. Where is the value for CT Non-Contrast Head Scan, namely a CTDIvol value of 60 mGy and a DLP value of 1275 mGy*cm.