Image processing apparatus, X-ray diagnostic apparatus, and image processing method

An image processing apparatus, comprising:

• processing circuitry configured to
• calculate a parameter value for each pixel based on a change in time of a pixel value of the corresponding pixel in multiple image data items;
• generate a parameter image such that each pixel of the parameter image has a pixel value according to the calculated parameter value of the corresponding pixel;
• generate a composite image of an X-ray fluoroscopic image of an object obtained in real time and a road map image using at least a part of the parameter image;
• and
• cause a display to display the composite image,
• wherein the processing circuitry is further configured to:
• identify a position in the parameter image of a portion of interest of a device inserted to a site of the object and obtaining information on a target position of the device in the parameter image;
• extract, from the parameter image, pixels having parameter values ranging from the parameter value of the position of the portion of interest of the device to the parameter value at the target position of the device;
• and
• generate, as the road map image, a partial image corresponding to the extracted pixels in the parameter image, generate the composite image of the X-ray fluoroscopic image of the object obtained in real time and the road map image, and cause the display to display the composite image.

An image processing apparatus, comprising:

• processing circuitry configured to
• calculate a parameter value for each pixel based on a change in time of a pixel value of the corresponding pixel in multiple image data items;
• generate a parameter image such that each pixel of the parameter image has a pixel value according to the calculated parameter value of the corresponding pixel;
• generate a composite image of an X-ray fluoroscopic image of an object obtained in real time and a road map image using at least a part of the parameter image;
• and
• cause a display to display the composite image,
• wherein the processing circuitry is further configured to:
• identify a position in the parameter image of a portion of interest of a device inserted to a site of the object;
• extract, from the parameter image, pixels in a predetermined region including the position of the portion of interest of the device;
• and
• generate, as the road map image, a partial image corresponding to the extracted pixels in the parameter image, generate the composite image of the X-ray fluoroscopic image of the object obtained in real time and the road map image, and cause the display to display the composite image.

An image processing apparatus comprising:

• processing circuitry configured to
• calculate a parameter value based on a change in time of a pixel value for each pixel of multiple image data items;
• generate a parameter image by determining a pixel value of each pixel according to the calculated parameter value;
• generate a composite image of an X-ray fluoroscopic image of an object obtained in real time and a road map image using at least a part of the parameter image;
• and
• cause a display to display the composite image,
• wherein the processing circuitry is further configured to:
• generate as the parameter value, a first parameter image using a time in which a contrast medium reaches each pixel, and a second parameter image using a maximum intensity arrival time, based on a time-intensity curve for each pixel of the multiple image data items;
• and
• switch the road map image to be combined with the X-ray fluoroscopic image of the object between the road map image based on the first parameter image and the road map image based on the second parameter image, according to an instruction by a user through an input device or at predetermined timing.

An image processing apparatus, comprising:

• processing circuitry configured to
• calculate a parameter value based on a change in time of a pixel value for each pixel of multiple image data items;
• generate a parameter image by determining a pixel value of each pixel according to the calculated parameter value;
• generate a composite image of an X-ray fluoroscopic image of an object obtained in real time and a road map image using at least a part of the parameter image;
• and
• cause a display to display the composite image,
• wherein the processing circuitry is further configured to
• identify a position in the parameter image of a portion of interest of a device inserted to a site of the object;
• extract, from the parameter image, pixels having parameter values in a predetermined range including the parameter value at the position of the portion of interest of the device;
• generate, as the road map image, a partial image corresponding to the extracted pixels in the parameter image, generate the composite image of the X-ray fluoroscopic image of the object obtained in real time and the road map image, and cause the display to display the composite image,
• generate, as the parameter value, a first parameter image using a time in which a contrast medium reaches each pixel, and a second parameter image using a maximum intensity arrival time, based on a time-intensity curve for each pixel of the multiple image data items;
• and
• switch the road map image to be combined with the X-ray fluoroscopic image of the object between the road map image based on the first parameter image and the road map image based on the second parameter image, according to an instruction by a user through an input device or at predetermined timing.

An image processing apparatus, comprising:

• processing circuitry configured to
• calculate a parameter value based on a change in time of a pixel value for each pixel of multiple image data items;
• generate a parameter image by determining a pixel value of each pixel according to the calculated parameter value;
• generate a composite image of an X-ray fluoroscopic image of an object obtained in real time and a road map image using at least a part of the parameter image;
• and
• cause a display to display the composite image,
• wherein the processing circuitry is further configured to switch the road map image to be combined with the X-ray fluoroscopic image of the object between the road map image generated using at least a part of the parameter image, and a contrast still image that is generated from the multiple image data items and show a state where a blood vessel at the site of the object is uniformly contrast-imaged, according to an instruction by a user through an input device or at predetermined timing.

An image processing apparatus, comprising:

• processing circuitry configured to
• calculate a parameter value based on a change in time of a pixel value for each pixel of multiple image data items;
• generate a parameter image by determining a pixel value of each pixel according to the calculated parameter value;
• generate a composite image of an X-ray fluoroscopic image of an object obtained in real time and a road map image using at least a part of the parameter image;
• and
• cause a display to display the composite image,
• wherein the processing circuitry is further configured to
• identify a position in the parameter image of a portion of interest of a device inserted to a site of the object;
• extract, from the parameter image, pixels having parameter values in a predetermined range including the parameter value at the position of the portion of interest of the device;
• generate, as the road map image, a partial image corresponding to the extracted pixels in the parameter image, generate the composite image of the X-ray fluoroscopic image of the object obtained in real time and the road map image, and cause the display to display the composite image, and
• switch the road map image to be combined with the X-ray fluoroscopic image of the object between the road map image generated using at least a part of the parameter image, and a contrast still image that is generated from the multiple image data items and show a state where a blood vessel at the site of the object is uniformly contrast-imaged, according to an instruction by a user through an input device or at predetermined timing.