CT MACO Hip Procedure – Step by Step
Patient Preparation
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No fasting required
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Remove metal objects
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Explain scan importance to patient
Scan Coverage
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From iliac crest to below knee joint
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Both hips + knee included (for alignment)
Positioning
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Patient supine
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Legs extended
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Feet in neutral position
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Avoid rotation
Scan Type
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Non-contrast CT
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Thin slices (high resolution)
CT MACO Hip: Technical Parameters (For Radiology Technologists)
📌 Scan Type
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Helical CT
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Non-contrast study
📌 Slice Thickness
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0.5 mm – 1.25 mm (as per vendor protocol)
📌 kVp
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120 kVp (standard adult)
📌 mAs
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Automated exposure control preferred
📌 Reconstruction
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Bone algorithm
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High-resolution kernel
📌 Field of View (FOV)
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Include pelvis, hip joints & knee joint
📌 Export Format
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DICOM only
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Compatible with MAKO planning software
⚠️ Important for Technologists:
Wrong coverage or wrong slice thickness can lead to repeat scan and surgical planning failure.
Is Radiation Risk High in CT MACO Hip?
CT MACO Hip uses controlled radiation dose.
The benefit of accurate surgery planning is much higher than the minimal radiation risk.
📌 ALARA principle is always followed.
Advantages of CT MACO Hip
✔ Higher surgical accuracy
✔ Better implant positioning
✔ Faster recovery
✔ Less post-operative pain
✔ Improved long-term outcome
Limitations of CT MACO Hip
❌ Not required for all hip patients
❌ Slight radiation exposure
❌ Higher cost compared to normal CT hip
Conclusion
CT MACO Hip is a critical investigation for robotic-assisted hip replacement surgery.
It helps surgeons plan surgery with millimeter accuracy, leading to better patient outcomes.
For radiology professionals, correct scanning technique and protocol adherence is essential to avoid repeat scans and ensure surgical success.
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