A computer-assisted calculation was used to measure the thickness, length, volume, and midline shift of preoperative AEDHs. The margins were traced using SYNAPSE software (version 4.1, Fujifilm, Tokyo, Japan) for every axial slice and automatically analyzed to measure the volume of AEDHs. The sum of all the slides was calculated as the overall hematoma volume. In addition, the location of AEDH (supratentorial or infratentorial) with or without intracranial hemorrhage (contusion, traumatic subarachnoid hemorrhage [SAH], and ASDH) was analyzed.
Synapse software
Manufactured by Fujifilm
Sourced in Japan
SYNAPSE software is a comprehensive medical imaging and information management solution developed by Fujifilm. It provides a centralized platform for storing, retrieving, and managing medical images and related patient data. The software's core function is to facilitate efficient and secure access to medical imaging data across healthcare facilities.
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Lab products found in correlation
4 protocols using synapse software
1
Volumetric Analysis of Acute Epidural Hematomas
2
Assessing Skeletal Muscle Characteristics via CT Imaging
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Access to computed tomography (CT) images on the day of admission was available through the picture archiving and communication system (PACS; SYNAPSE software, Fujifilm Medical Co., Tokyo, Japan). After the observer outlined the muscle, the range of the area of interest was calculated by the software. Muscle attenuation, a measure of muscle density and fatty infiltration, was quantified using Hounsfield units (HU) obtained from the CT image. Lean skeletal muscle mass was estimated by measuring the cross-sectional area of the psoas and paraspinal (quadratus lumborum, erector spinae) muscles at the third lumber vertebra (L3) as shown in Fig. 1 . A strong correlation between the cross-sectional area of skeletal muscle at this landmark and whole-body muscle distribution has been reported, and the validity and reliability of this method to estimate lean skeletal muscle mass have been established [10 (link)–12 (link)]. HUs within the range of interest of each muscle were calculated, and the average value was used for the final muscle attenuation. The observer was blinded to patients’ survival status.![]()
CT image at the L3-sectional muscle. The right L3-sectional muscle area is outlined. Muscle area and mean muscle attenuation are calculated by the picture archiving and communication system (PACS) software
3
Radiographic Cervical Spine Analysis
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Both pre-and postoperative cervical spine X-ray images taken in the neutral sitting position were analyzed using Synapse software (Fujifilm, Japan). The radiographic parameters for cervical spine assessment included: cervical sagittal vertical axis (cSVA), defined as the horizontal distance between the center of C2 and the posterior superior corner of the C7 vertebral body 22 ; C7 slope, defined as the angle between a horizontal line and the C7 upper-end plate 23 ; C2-C7 lordotic angle, defined as the angle between the tangent lines of the lower endplates of C2 and lower endplates of C7 vertebral bodies 16, 24, 25 ; cervical mismatch, the number of the patients whose "C7 slope minus C2-7 lordotic angle" was more than 15 degrees 26 ; segmental range of motion (ROM), defined as the difference in lordotic angles of each segment between the maximum flexion and extension positions; and C2-C7 ROM, defined as the difference in C2-7 lordotic angles between the maximum flexion and extension positions 25 . In addition, the severity of the canal stenosis was evaluated using a previously reported classification 27 with preoperative magnetic resonance imaging (MRI). The levels that showed grade 2 or 3 stenoses were defined as the stenosis level, and the number of the stenosis level of each patient was counted.
4
Calculating Total Kidney and Liver Volume
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Renal volume was calculated on MR images by using the formula for an ellipsoid (a × b × c × π/6), where a is the maximum length of the kidney and b and c are the maximum widths in two transverse dimensions. MR images obtained at a slice interval of 1 cm were analyzed using Synapse software (Fujifilm Company) to measure the liver area (cysts plus parenchyma), and the liver volume was calculated as the sum of the hepatic area on each slice. Then the TLKV was calculated as the sum of the kidney volume and the liver volume.
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