Data acquisition and visualization mode for low dose intervention guidance in computed tomography

A method for monitoring a guided intervention device using computed tomography (CT), comprising:

• constructing (302) an image volume of a patient by CT scanning;
• performing (304) a circular acquisition to update a position of the intervention device wherein the acquisition includes skipping view angles by completely turning off an x-ray tube of the radiation source at given angular positions;
• generating (308) a model of the intervention device to provide a virtual image of the intervention device against a background of the image volume;
• and
• modeling (310) the intervention device during at least one of the skipped view angles to provide tracking of the intervention device.

A system for monitoring an intervention device, comprising:

• an image scanner (106) configured to image an image volume (144) of a subject and determine a position of an intervention device (118) inside the subject using a radiation source (104), the image scanner being configured to perform a circular acquisition to update the position of the intervention device wherein the acquisition obtains images at periodic view angles by turning off the radiation source at given angular positions;
• a memory storage device (132) configured to store a model (140) of the intervention device to provide a virtual image of the intervention device against a background of the image volume of the subject, the model being configured to provide movement of the intervention device during the periodic view angles to provide tracking of the intervention device;
• and
• a display (146) configured to receive a modeled movement of the intervention device and to display the modeled intervention device against a last projection image of the image volume.