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).
 

Herniated nucleus pulposus (HNP) is the leading cause of back pain in old age, occurring as a result of tearing of the fibrous annulus and the nucleus pulposus exiting through the tear. To optimize pathology, fat suppression techniques are needed to suppress fat and fluid. Fat Suppression techniques include Dixon and SPAIR. The use of Dixon is relatively longer but can produce four images at once, while SPIR has the advantage of being more resistant to inhomogeneous magnetic fields. The purpose of this study was to determine the difference between T2WI SPIR and T2WI diagnostic image information Dixon Sagital Cut Lumbar MRI with Hernia Nucleus Pulposus (HNP) cases as well as find out which one is better between the two techniques. The type of research used is quantitative research with an experimental approach that uses prospective data aimed at determining the difference in diagnostic image information T2WI SPIR and T2WI Dixon MRI examination of Sagital Cuts. The study population is patients who perform Lumbar MRI examinations with HNP cases at the Radiology Installation of NTB Provincial Hospital for the period May-July 2023. This study applied total sampling, using a research sample of 17 patients. The results showed a difference in image information between the T2WI SPIR and T2WI Dixon sequences on Lumbar MRI examination of Sagital Cut with a p-velue value smaller than ? (<0.05), namely in the anatomy of the Spinal Cord with a p-value (0.021), and the anatomy of the Corpus Vertebraewith value p-value (0.001). The T2 Spir sequence is more optimal in showing anatomical information on the Sagittal Cut lumbar MRI examination compared to the T2 Dixon sequence.  due to the more homogeneous emphasis of fat on the anatomy of the Spinal Cord and Corpus Vertebrae

Differences in Time Repetition (TR) value variations on the quality of MRI Knee Joint images using TR 3440 ms and 3470 ms at the Radiology Installation of the Mangusada Regional Hospital, Badung. TR is a parameter that controls the amount of longitudinal magnetization that is recovered before the next RF pulse. The purpose of the study was to determine the comparison of the optimal value and value for the Signal to Noise Ratio (SNR) and Contrast to Noise Ratio (CNR) on the MRI Knee Joint examination using variations of TR 3440 ms and 3470 ms.This type of research is a quantitative experimental approach. This study consists of 10 data samples.  Assessment was carried out on the overall knee joint and anatomical criteria including bone, posterior cruciate ligament, cartilage, and meniscus. Then, the data we tested by Paired T-test.The test results stated that there was no significant difference in the value of the SNR and CNR on the Knee Joint examination using the TR variation of 3440 ms and 3470 ms as indicated by value > 0.05 both Knee Joint anatomical criteria nor as a whole. This is adjusted to the results of the calculation of the average SNR value which is at TR 3440 ms 17.4421 and at TR 3470 ms 16.8784. While CNR, there is no significant difference indicated by value > 0.05, with an average value at TR 3440 ms 17.2311 and at TR 3470 ms 17.8681.There is no significant difference in quality of MRI Knee Joint image with variations of TR 3440 ms and TR 3470 ms. The optimal TR variation that produces SNR MRI Knee Joint image quality is TR 3440 with an average SNR value of 17.4421, and the CNR image quality produces an average value of 17.8681 using TR 3470 ms variation.