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US 2010/0249648 A1Published application
Biopsy apparatus and biopsy method
AssigneeFUJIFILM Corporation
InventorHajime NAKATA
Life of this patent
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Abstract
A biopsy apparatus has a biopsy needle, which faces a radiation reception surface of a radiation detector and is held obliquely to the radiation reception surface by a biopsy needle holding mechanism. The biopsy apparatus includes a radiographic image capturing apparatus for capturing two radiographic images. One of the two radiographic images is produced according to a scout image capturing mode or a stereographic image capturing mode, and the other is produced according to the stereographic image capturing mode.
Claims10
A biopsy apparatus comprising:
- a radiographic image capturing apparatus including a radiation source for applying radiation to an object to be examined, and a radiation detector for detecting the radiation which has passed through the object and converting the detected radiation into a radiographic image;
- and
- a biopsy needle positioning device including a biopsy region positional information calculator for calculating a three-dimensional position of a biopsy region of the object based on at least two radiographic images obtained by irradiating the object with the radiation from directions that are different from each other, a biopsy needle for piercing the biopsy region based on the calculated three-dimensional position of the biopsy region and sampling tissue of the biopsy region, and a biopsy needle holding mechanism for holding the biopsy needle,
- wherein the biopsy needle faces a radiation reception surface of the radiation detector and is held obliquely to the radiation reception surface by the biopsy needle holding mechanism,
- wherein one of the at least two radiographic images comprises either a radiographic image produced according to a scout image capturing mode, in which the object is irradiated with the radiation applied from the radiation source when the radiation source is disposed on an axis perpendicular to the radiation reception surface, or a radiographic image produced according to a stereographic image capturing mode, in which the object is irradiated with the radiation applied from the radiation source when the radiation source is disposed obliquely to the axis, and
- wherein the other of the at least two radiographic images comprises a radiographic image produced according to the stereographic image capturing mode.
3 more elements
A biopsy method comprising the steps of:
- detecting radiation applied from a radiation source and having passed through an object to be examined, and converting the detected radiation into at least two radiation images with a radiation detector having a radiation reception surface, the two radiation images being produced either according to a scout image capturing mode, in which the object is irradiated with the radiation applied from the radiation source when the radiation source is disposed on an axis perpendicular to the radiation reception surface, and a stereographic image capturing mode, in which the object is irradiated with the radiation applied from the radiation source when the radiation source is disposed obliquely to the axis, or according to the stereographic image capturing mode;
- calculating a three-dimensional position of a biopsy region of the object based on the at least two radiographic images with a biopsy region positional information calculator;
- and
- piercing the biopsy region with a biopsy needle based on the calculated three-dimensional position of the biopsy region and sampling tissue of the biopsy region while the biopsy needle faces the radiation reception surface and is held obliquely to the radiation reception surface by a biopsy needle holding mechanism.
1 more element
Dependencies are inferred from the claim text.