Reduced-dose C-arm computed tomography applications at a pediatric institution
- 199 Downloads
Reduced-dose C-arm computed tomography (CT) uses flat-panel detectors to acquire real-time 3-D images in the interventional radiology suite to assist with anatomical localization and procedure planning.
To describe dose-reduction techniques for C-arm CT at a pediatric institution and to provide guidance for implementation.
Materials and methods
We conducted a 5-year retrospective study on procedures using an institution-specific reduced-dose protocol: 5 or 8 s Dyna Rotation, 248/396 projection images/acquisition and 0.1–0.17 μGy/projection dose at the detector with 0.3/0.6/0.9-mm copper (Cu) filtration. We categorized cases by procedure type and average patient age and calculated C-arm CT and total dose area product (DAP).
Two hundred twenty-two C-arm CT-guided procedures were performed with a dose-reduction protocol. The most common procedures were temporomandibular and sacroiliac joint injections (48.6%) and sclerotherapy (34.2%). C-arm CT was utilized in cases of difficult percutaneous access in less common applications such as cecostomy and gastrostomy placement, foreign body retrieval and thoracentesis. C-arm CT accounted for between 9.9% and 80.7% of the total procedural DAP.
Dose-reducing techniques can preserve image quality for intervention while reducing radiation exposure to the child. This technology has multiple applications within pediatric interventional radiology and can be considered as an adjunctive imaging tool in a variety of procedures, particularly when percutaneous access is challenging despite routine fluoroscopic or ultrasound guidance.
KeywordsC-arm computed tomography Children Computed tomography Dose reduction Flat-panel computed tomography Interventional radiology
Compliance with ethical standards
Conflicts of interest
- 12.Perry BC, Monroe EJ, McKay T et al (2017) Pediatric percutaneous osteoid osteoma ablation: cone-beam CT with fluoroscopic overlay versus conventional CT guidance. Cardiovasc Intervent Radiol. https://doi.org/10.1007/s00270-017-1685-2