US 12,145,000 B2
Radiotherapy support system and method
Masahide Ichihashi, Otawara (JP)
Assigned to Canon Medical Systems Corporation, Otawara (JP)
Filed by Canon Medical Systems Corporation, Otawara (JP)
Filed on Jul. 27, 2021, as Appl. No. 17/443,687.
Claims priority of application No. 2020-126481 (JP), filed on Jul. 27, 2020; and application No. 2021-121265 (JP), filed on Jul. 26, 2021.
Prior Publication US 2022/0023663 A1, Jan. 27, 2022
Int. Cl. A61N 5/10 (2006.01)
CPC A61N 5/1007 (2013.01) [A61N 5/1031 (2013.01); A61N 5/1064 (2013.01); A61N 2005/1098 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A radiotherapy support system, comprising:
processing circuitry being configured to
obtain a medicament distribution of a medicament to be administered to a tumor;
obtain a distribution of a dose of radiation to be applied to the tumor; and
produce a radiotherapy plan for the tumor using a combination of the medicament and the radiation, based on the obtained medicament distribution and the obtained dose distribution,
wherein the processing circuitry is further configured to produce a medicament administration plan including medicament administration conditions for the medicament to be administered to the tumor, and produce the medicament distribution based on the produced medicament administration plan, the medicament administration conditions include an injection point and an injection amount of the medicament,
the processing circuitry is further configured to calculate the medicament distribution based on forms and properties of at least one of the tumor or peripheral anatomical tissue, the injection point, and the injection amount of the medicament, and output, during use of a medicament injection device, which includes a needle for injecting the medicament, by an operator, guidance information that guides the operator to move the medicament injection device to an administration position, based on the calculated medicament distribution,
wherein the radiotherapy support system further comprises an imaging apparatus provided in the medicament injection device that administers the medicament, the imaging apparatus generating an ultrasonic image or an optical image of an inside of luminal tissue of a patient, and a display device that superimposes guidance information to guide the medicament injection device to a targeted position of the medicament injection device, on the ultrasonic image or the optical image,
the processing circuitry is further configured to determine a first piercing point and a second piercing point as the targeted position based on a positional relationship between the tumor included in the ultrasonic image and/or the optical image and the peripheral anatomical tissue in which the tumor is present, which differs from the luminal tissue,
the first piercing point is a first location at which the needle is first inserted into the luminal tissue,
the second piercing point is a second location at which the needle is inserted into the tumor, which is located deeper than the luminal tissue,
the display device superimposes a first mark indicating the administration position and a second mark indicating the targeted position of the medicament injection device on the ultrasonic image or the optical image, and
the display device displays a medical image to which a current position of the medicament injection device is added, the ultrasonic image, and the optical image, side by side.