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Procedure For Magnetic Resonance Spectroscopy Examination Technique In Brain Tumor Cases At The Radiology Installation Of Pertamina Central Hospital Jakarta. MR spectroscopy is one way of describing metabolites in tumor tissue without being invasive. Single spectroscopic approach, which is used in Magnetic Resonance Spectroscopy and is the most common spectral collection method in MRI modalities. MRi is the establishment of a medical diagnosis based on the principle of magnetic resonance. MRI aircraft produce images in various pieces namely coronal, sagittal, and transverse by not at all using x-rays that produce radiation and also using radioactive substances. Brain tumors are abnormally growing brain tissue cells originating from the brain or meningens, which are benign or malignant tumors that make massive pressure. MRS is a unique non-invasive sequence that helps in the identification of lesion molecules and the difference between malignant and benign lesions. In MRI examination of the brain with tumor cases there are several sequences used, namely Se / Fse Pd / T2, Se / Fse / incoherent spoiled, (DWI) diffusion weighted imaging (1) According to Elmaoglu (2), imaging techniques that can be used for MRI brain tumor cases include axial T1 spin echo, T2 fast recovery fast spin echo, T2 FLAIR, coronal T1 and T1 Axial post contrast injection,  T1 coronal, and T1 sagittal, diffusion weighted imaging (DWI), magnetic resonance angiography, and magnetic resonance spectroscopy. In taking SVS LESION localizer must be precise on tumor tissue not taking part that is not part of the tumor, analyze tumor area and take SVS NORMAL localizer on other healthy tissue.

Magnetic Resonance Imaging (MRI) is a medical diagnostic imaging technique that works on the principle of nuclear magnetic resonance. MRI aircraft can produce diagnostic images of the inside of the human body in both sagittal, coronal, and transverse cuts, Magnetic resonance imaging (MRI) is a widely accepted non-invasive technique for the evaluation of cartilage lesions. The femur, tibia, fibula, and patella are united into one complex group by ligaments. According to Moeller, Genu Examination uses STIR Sequence, Sagital T2 Weighted Fat saturated, Sagittal 3D GRE, Proton Density weighted fat saturated T1 Coronal. The author's purpose in conducting this study is because Genu Examination at one of the Jakarta Hospital in the Case of Soft Tissue Tumor, Meniscus Tear and Oesteoarthritis added the Axial 3D SPGR sequence. The research method used is descriptive research with an observational approach. Data collection was carried out on June 5 to August 31 using Mri GE aircraft with a power of 1.5 Tesla. The patient samples used in this study were three patients with clinical Soft Tissue Tumor, Meniscus Tear, and Osteoarthritis. Data collection was carried out through observation, interviews and Genu Examination Documentation with the addition of Axial 3D SPGR. The examination is carried out using Quad Knee Coil, the patient's position is supine, feet first. The sequences used in the examination at one of the Jakarta hospitals are Axial Proton Density Fat saturated, Sagital Proton Density Fat saturated, Sagital T2, Coronal Proton Density Fat saturated, Coronal STIR. The role of the Axial 3D SPGR sequence is to evaluate articular cartilage due to its clear depiction of cartilage morphology and high signal to noise ratio (SNR) images.

This study aims to analyze the communication of marine mammals, especially whales and dolphins, through a bioacoustic approach combined with computational science as an effort to support conservation in the Tropical Ocean region. The focus of the location is on the Banda Sea, the Seram Sea, and the tropical Pacific region which are important migration routes for marine mammals. Data were obtained from underwater sound recordings using hydrophones, accompanied by visual observations to validate the behavior and existence of species. The analysis is carried out through several stages, including signal pre-processing with noise filtering and sound segmentation, spectral analysis using Fast Fourier Transform (FFT), as well as the creation of a spectrogram to visualize vocalization patterns. Machine learning algorithms such as Support Vector Machine (SVM) are used to classify interspecies voices, while deep learning approaches are applied to identify more complex communication patterns, including dialect variations. The results showed that whales produced low-frequency vocalizations (20–200 Hz) for long-distance communication, while dolphins used high-frequency clicks and whistles (5–20 kHz) for echolocation and social interaction. The integration of bioacoustics and artificial intelligence improves the accuracy of sound classification by more than 90%. These findings confirm the effectiveness of computational-based non-invasive methods in monitoring the presence and behavior of marine mammals and provide a scientific basis for sustainable conservation.

Upper Extremity CT-Scan Angiography (CTA) Examination Procedure in Right Subclavian Artery Pseudoaneurysm Cases at Primaya Hospital Tangerang. Upper Extremity CT-Scan Angiography (CTA) is described as a technique for non-invasively evaluating vascular structures via peripheral contrast injection. Upper Extremity CTA is carried out starting from patient preparation, tools and materials used, examination protocols, and image reconstruction techniques. In addition, the contrast infusion technique must also be appropriate to provide an informative image. The purpose of this study was to determine the procedure for examining the Upper Extremity CTA in cases of subclavian artery pseudoaneurysm with excess of the Upper Extremity CTA. This research is a qualitative research with a case study method using 1 patient. Data were collected using observation, documentation and radiographer interview methods. The results of the data collected can be concluded with the Upper Extremity CTA procedure using Scanning Scannogram, pre-contrast, & post-contrast arterial phase, and venous phase, then image reconstruction from the MPR image and 3D VR image. The advantages of the CTA procedure using the smart prep technique image resolution quality could be higher.