Axillary US was performed in 101 volunteer healthcare professionals within 2-3 (mean, 18 days; range, 9-21 days) after the first dose of the CoronaVac vaccine and 90 participants within 2-3 weeks (mean, 8 days; range, 2-21 days) after the second dose (Table 1 ). The RS80A US system with Prestige (Samsung) and LM4-15B (4-15 MHz) linear array probe was used for the US, which was performed by two radiologists with 20 and 22 years of experience in axillary US. Both axillary lymph nodes of each volunteer were evaluated. After the administration of two vaccine doses, the cortical thicknesses of the largest and thickest lymph node were measured and recorded. Cortical thickness was classified as diffuse and asymmetrical. An increase in cortical thickness of >1 mm on the vaccinated side was considered significant. In participants with significant cortical thickening (>3.5 mm), follow-up US was applied to the axillary lymph node on the vaccinated side at 8–9 weeks after the second dose. Each participant was questioned to determine whether they had any complaints of palpable axillary lymph node swelling and pain. For participants who underwent antibody measurements, the antibody levels were classified as low (<10) and high (≥10), and the cortical thickening of the axillary lymph nodes was compared between these two groups to determine any significant difference.
Rs80a us system
Manufactured by Samsung
The RS80A US system is a diagnostic ultrasound device designed for medical professionals. It provides high-quality imaging capabilities to aid in clinical decision-making. The core function of the system is to generate and display real-time images of the body's internal structures using sound waves.
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Lab products found in correlation
6 protocols using rs80a us system
1
Axillary Lymph Node Changes After CoronaVac Vaccine
2
Ultrasound-Guided Thyroid Nodule Evaluation
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Ten radiologists including four faculty members, with 5–20 years of experience in thyroid imaging, and six fellows training in thyroid radiology were involved in image acquisition. US examinations were performed with a 3–12-MHz linear high-frequency probe using a RS80A US system (Samsung Medison Co., Seoul, South Korea). US features of each thyroid nodule were prospectively recorded by the radiologist who performed the US or US-guided FNA, according to composition, echogenicity, margin, shape and calcifications26 (link). Marked hypoechogenicity, microlobulated or irregular margins, microcalcifications, and nonparallel shape were considered as US features suspicious for malignancy26 (link). When thyroid nodules exhibited at least one of the suspicious US features, they were assessed as “suspicious”. When thyroid nodules had no suspicious US features, there were assessed as “probably benign”. US-guided FNA was performed on nodules assessed as suspicious or on the largest nodule when there were only probably benign nodules.
3
Automatic Versus Manual Fusion Imaging for RFA
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A senior interventional radiologist with 13 years of experience in RFA (>1,000 cases of RFA, >200 cases of imaging fusion) and a junior interventional radiologist, who was less experienced, with 3 years of experience in RFA (>50 cases of RFA, >30 cases of imaging fusion), participated in this study. They performed more than 10 cases of RFA or biopsy with automatic registration for 3 months before enrolling patients to get used to the new automatic registration technique.
The RS80A US system (Samsung Medison, Seoul, Korea), which is capable of fusion imaging (S-Fusion, Samsung Medison) was adopted for automatic registration. The LOGIQ E9 US system (GE Healthcare), which is also capable of fusion imaging (Volume Navigation, GE Healthcare) was adopted for manual registration. These US systems were coupled with a magnetic field generator. Two electromagnetic position sensors were connected to a position sensing unit and were attached on a convex-type ultrasound transducer using a bracket. Both the transmitter and sensors were connected to a fully integrated position sensor unit embedded in the US unit (Ascension Technology, Shelburne, VT, USA). For the LOGIQ E9 US system, an active patient tracker (OmniTrax, CIVCO Medical Solution, Kalona, IA, USA) was attached on the left anterior chest wall of the patient to correct patient motion.
The RS80A US system (Samsung Medison, Seoul, Korea), which is capable of fusion imaging (S-Fusion, Samsung Medison) was adopted for automatic registration. The LOGIQ E9 US system (GE Healthcare), which is also capable of fusion imaging (Volume Navigation, GE Healthcare) was adopted for manual registration. These US systems were coupled with a magnetic field generator. Two electromagnetic position sensors were connected to a position sensing unit and were attached on a convex-type ultrasound transducer using a bracket. Both the transmitter and sensors were connected to a fully integrated position sensor unit embedded in the US unit (Ascension Technology, Shelburne, VT, USA). For the LOGIQ E9 US system, an active patient tracker (OmniTrax, CIVCO Medical Solution, Kalona, IA, USA) was attached on the left anterior chest wall of the patient to correct patient motion.
4
Optimizing Respiratory Liver Motion Compensation
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Using a custom-made simulation software (Blind Test Tool; Samsung Medison, Seoul, Korea), a pilot study was performed using 10 patients to optimize the algorithm for generating VE-CT images that can accurately compensate for respiratory liver motion and thus show better visual similarity with the liver anatomy using VE-CT and US images than using CI-CT and US images. The final version was installed on a commercially available RS80A US system (Samsung Medison) (Fig. 1 ).
5
Breast Lesion Evaluation Using AI-Assisted Ultrasound
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US examinations were performed using an RS80A US system (Samsung Medison Co., Ltd.) equipped with a 3–12 MHz or 4–18 MHz linear probe by one of 16 radiologists with 1–10 years of experience in breast US from 9 hospitals. These radiologists were mixed body/breast radiologists who either lacked subspecialty training in breast imaging or for whom the number of annual breast ultrasounds accounted for less than 10 % of the total number of annual ultrasounds. The radiologists, who knew the patient's clinical information and previous examination findings (US, mammography or MRI), independently evaluated the lesion and made a diagnosis of the lesion according to the fifth edition of BI-RADS lexicon after the dynamic scanning [8 ]. Then, CAD analysis (S-Detect) was performed on the gray-scale image in long-axis plane by the same radiologist, who performed the gray-scale ultrasound. After clicking the lesion center on the selected image, the software automatically calculated the contour of the lesion and evaluated its US features in long-axis plane. Manual adjustment could be made when the segmentation inaccurately defined the contour of the lesion. The lesion was finally diagnosed in a dichotomous format, in real time, as “possibly benign” or “possibly malignant” [16 (link),22 ].
6
Breast Lesion Ultrasound Imaging Protocol
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US examinations were performed using an RS80A US system (Samsung Medison Co., Seoul, South Korea) equipped with a linear high-frequency probe (frequency range, 3–12 MHz). One radiologist with 14 years of experience in breast imaging was involved in image acquisition. The radiologist was aware of the clinical and mammographic features and had access to the previous US images. Transverse and longitudinal static images were obtained for each lesion. For image analysis using CAD, video clips that included the entire mass and the surrounding normal breast parenchyma were recorded with the US machine during one-directional movement of the probe, starting at one end and ending at the other end of the mass. US-guided biopsy was performed after the US examination by 1 of the 2 radiologists who performed the scanning.
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