Asirv50

Manufactured by GE Healthcare

The ASiRV50 is a laboratory equipment product from GE Healthcare. It is designed for processing and analyzing biological samples. The core function of the ASiRV50 is to provide automated sample preparation and data acquisition capabilities for researchers and clinicians.

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Lab products found in correlation

Admire 2, by Siemens (1 mentions) Ge revolution, by GE Healthcare (1 mentions) Somatom force, by Siemens (1 mentions) Omnipaque, by GE Healthcare (1 mentions) Truefidelity, by GE Healthcare (1 mentions) Ge revolution ct scanner, by GE Healthcare (1 mentions)

2 protocols using asirv50

CT Imaging of Arthroplasty Migration

Cited 2 times

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CT examinations were performed on 2 CT scanners (GE Revolution, GE Healthcare, Chicago, USA and Siemens SOMATOM Force, Siemens Healthcare GmbH, Erlangen, Germany). Model-based iterative reconstruction algorithms (ADMIRE 2, Siemens and ASiRV50, GE Healthcare) were used, with metal artefact reduction (MAR). The CT protocol parameters were tube voltage 120 kV, tube current 100 mAs, slice thickness 0.625 mm, rotation time 0.5 seconds, pitch 1.0, and field-of-view 200 × 200 mm. These parameters, scan length, CT dose index volume (CTDIvol), and dose length product (DLP) were matched on the CT scanners at a total dose of 6.34 mGy. EDs were estimated by multiplying DLP by the knee conversion factor 0.0004 mSv/(mGy × cm) (17 (link)).
The cadaver was repositioned between each exposure. Scans were analyzed with a commercially available CT migration analysis software (generic name CTRSA), CTMA software (Sectra AB, Linköping, Sweden) (12 (link)). The following steps were performed, as previously described for hip and shoulder arthroplasty (8 (link),9 (link)):

ENGSETH L.H., SCHULZ A., PRIPP A.H., RÖRHL S.M, & ØHRN F.D. (2023). CT-based migration analysis is more precise than radiostereometric analysis for tibial implants: a phantom study on a porcine cadaver. Acta Orthopaedica, 94, 207-214.

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Whole-Body CT Scanning Protocol

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All CT scans were performed on a GE Revolution CT scanner (GE Healthcare), with standardly applied scanning parameters for whole-body CT (thorax, abdomen and pelvis) with contrast enhancement in the portal venous phase. Intravenous contrast with iohexol 350 mg/ml (Omnipaque, GE Healthcare) was administered based on patient weight (2 ml/kg), and with a fixed injection speed of 4 ml/s and scanner acquisition delay of 85 s. Scans were obtained using 120 peak kilovoltage (kVp), 8 cm detector collimation (128 × 0.625 mm), pitch of 0.5, rotation time 0.5 s, and large scan field of view (50 cm). Raw data were used to generate six axial image sets, applying standard IR (ASiR-V 50%, GE Healthcare), DLIR of medium strength, and DLIR of high strength (TrueFidelity, GE Healthcare) to generate images of both 0.625 mm and 2.5 mm slice thickness.

Njølstad T., Schulz A., Godt J.C., Brøgger H.M., Johansen C.K., Andersen H.K, & Martinsen A.C. (2021). Improved image quality in abdominal computed tomography reconstructed with a novel Deep Learning Image Reconstruction technique – initial clinical experience. Acta Radiologica Open, 10(4), 20584601211008391.

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