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iterative Metal Artifacts Reduction (iMAR)

iMAR4 technology applies iterative corrections to reduce metal artifacts effectively. Even in challenging cases, such as two hip prostheses, the pelvic anatomical structures can be clearly visualized.

Collimation: 128 x 0.6 mmTube settings: 100 kV, 372 eff. mAs
Scan time: 9.5 sDLP: 682.4 mGy cm
Scan length: 448.5 mmCTDIvol: 14.7 mGy
Rotation time: 0.5 sEff. dose: 10.2 mSv

(Images: Luzerner Kantonsspital, Luzern, Switzerland)


Smaller tumor visualization

This case shows a small tumor, adjacent to a tibial metal fixation. With iMAR4, Siemens presents an exclusive iterative metal artifact reduction technique that enhances diagnostic confidence and provides clear guidance for biopsy.

Collimation: 128 x 0.6 mmTube settings: 120 kV, 157 eff. mAs
Scan time: 4.4 sDLP: 173.3 mGy cm
Scan length: 147 mmCTDIvol: 10.61 mGy
Rotation time: 0.5 sEff. dose: 2.6 mSv

(Images: University Hospital of Basel, Basel, Switzerland)

Radiation Therapy Planning

Improving brachytherapy guidance 

This cervical case features a patient receiving low dose rate (LDR) brachytherapy. iMAR diminishes the artifacts caused by the applicators providing clear visualization for brachy seed placement.

collimation: 16x1,2 mm/p.0.8Tube settings: 100 kV
scan time: 14 sDLP: 578
scan length: 440 mmCTDIvol: 8.50
rotation time: 0.5 sEff. Dose: 8.6 mSv
Courtesy of: Rigshospitalet Department of Oncologie , Denmark