JPH0631005A - Radiation positioning device - Google Patents

Abstract

PURPOSE:To make it possible to easily and rapidly set an irradiation range with radiations. CONSTITUTION:While the perspective image of a patient is displayed on a monitor 12 in a console room, the position data for setting lead blocks is preserved into a memory system 16 of a computer by a write pen 15a and thereafter, X-ray fluoroscopy is stopped and the data stored in the memory system is called out in a room 9 where the patient exists. A marking device 5 is driven in accordance with such data and the positions to be set with the lead blocks are successively indicated by the wire cursor of the marking device 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiation positioning apparatus for positioning a lesion before treating a lesion of a patient by using radiation such as X-rays, and more particularly, a radiation positioning apparatus capable of easily determining a radiation irradiation range. Regarding the device.

[0002]

2. Description of the Related Art Generally, a radiation positioning apparatus has a basic structure as shown in FIG. Such a device includes an X-ray tube 20, an X-ray diaphragm 21, a wire collimator 22, a light source device 23, a scale plate 24, a block table 25, a bed 26,
It has an image intensity firer (hereinafter referred to as “II”) 27 and the like.

In order to determine the irradiation range of radiation by this radiation positioning apparatus, first, a screen 2 of a monitor equipped with an X-ray fluoroscopic image of the lesion a of the patient P lying on the bed 26 in a separate room.
8, and the bed 26 and the like are remotely operated so that the lesion a of the patient P is located in the radiation irradiation field. At this time, in the X-ray fluoroscopic image of the screen 28 shown in FIG. 7, the irradiation field of the wire collimator 22 is displayed as a cross-shaped line shadow 22a,
The scale plate 24 is displayed as a cross-shaped line shadow 24a.

Based on the X-ray fluoroscopic image, the operator checks the portion of the healthy tissue around the lesion and then temporarily stops the X-ray fluoroscopy, turns on the light source device 23 in the room where the patient P is present, and turns on the wire. A light beam is made incident on the collimator 22. As a result, the skin surface of the patient P is irradiated with a light beam, and a cross-shaped line shadow is displayed in the irradiation field. It is not necessary to install the lead block 29 on the block base 25 and irradiate the radiation while using this as a guide. The part is shielded.

[0005]

However, in the above radiation positioning apparatus, when determining the irradiation range of radiation,
Since it is necessary to prevent operators and others from being exposed to radiation, it is not possible to install the lead block while checking the perspective image on the monitor. Also, there was no one that gave a specific indication of where the lead block should be placed. As a result, when installing the lead block, it is necessary to display a perspective image on a monitor in a separate room to check the installation status, and there is a problem that trial and error work of re-installing the lead block is required. In addition, the laborious installation work of the lead block has a problem in that the work efficiency is poor and the patient is uncomfortable for a long time.

The present invention has been made to solve these problems, and an object of the present invention is to provide a radiation positioning apparatus capable of easily and quickly determining the irradiation range of radiation.

[0007]

A first radiation positioning apparatus according to the present invention is a radiation positioning apparatus for locating a lesion before irradiating the lesion on a patient with radiation to treat the lesion through a wire collimator that transmits radiation. A light source device that irradiates the patient with a light beam toward the patient, a block platform on which a block used to shield the radiation in the irradiation field is placed, and the portion where the block is to be installed within the irradiation field by the light beam is indicated by the line shadow of the wire cursor. A marking device and a device that simultaneously displays a fluoroscopic image of the patient and the line shadow of the wire cursor on the monitor, operates the wire cursor remotely, and stores the position data designated by the wire cursor in the storage system, and the block. When setting, drive the wire cursor of the marking device based on the position data saved in the memory system. Characterized by comprising a means for.

A second radiation positioning apparatus according to the present invention is a radiation positioning apparatus for positioning a lesion before irradiating the lesion on the patient with radiation and treating the lesion with a wire collimator which transmits the radiation toward the patient. A light source device for irradiating the object, a block base on which a block used for shielding radiation in the irradiation field is placed, a marking device for instructing a portion to be installed in the irradiation field by light rays by a line shadow of a wire cursor, and a patient While referring to the fluoroscopic image of the monitor on the monitor, a means for saving the coordinate data of the part to be protected from radiation in the memory system, and the wire cursor of the marking device based on the coordinate data saved in the memory system when setting the block. And means for driving.

[0009]

In the radiation positioning apparatus of the above means, when positioning radiation, first, in the console room, a fluoroscopic image of the patient is displayed on the monitor, and the setting position of the block used for radiation blocking is marked with a light pen or the like. Then, the data can be stored in the storage system of the computer. Then, when the fluoroscopy is stopped and the marking device is driven based on the data stored in the storage system in the room where the patient is present, the wire cursor of the marking device sequentially indicates the position where the block should be installed. , You can easily set the lead block to the exact part.

[0010]

Embodiments of the radiation positioning apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a basic configuration of a radiation positioning apparatus.

The radiation positioning apparatus includes an X-ray tube 1 for irradiating a patient with radiation in order to obtain a fluoroscopic image, an X-ray diaphragm 2 and a wire collimator 3 for limiting a radiation irradiation field range.
, A light source device 4 and a marking device 5 used to indicate a portion that should not be irradiated with radiation, a lead block 17a used to shield radiation, a block base 6 on which the lead block 17a is mounted, and a bed 7 for fixing the patient P. And I. for converting and amplifying an X-ray image into an optical image. I8 etc. In addition, the wire collimator 3 itself rotates so that the cross-shaped irradiation port can be opened and closed. Further, the marking device 5 has a cross-shaped wire cursor 5 a that can be rotated and linearly moved separately from the wire collimator 3, and is provided below the block base 6.

FIG. 2 is a block diagram showing an embodiment of the main configuration of the radiation positioning apparatus. In the radiation treatment room 9, as shown by being surrounded by a broken line in FIG. 2, in addition to the basic devices such as the light source device 4, the wire collimator 3, and the marking device 5, the first monitor 10 and various command signals are input. A handheld operating device 11 is provided. On the other hand, in another room,
An input device including a second monitor 12, a graphic superimposing circuit 13 used for superimposing a marking image on an X-ray fluoroscopic image, a CPU 14 for controlling various devices by receiving various input signals, and a light pen 15a used for inputting data and the like. 15, a console having a memory 16 for storing various data is provided.

In order to perform radiation positioning using such a device, first, the patient P is fixed to the bed 7, and then the radiation irradiation direction and the bed position data are stored in the memory 16 using the input device 15. X-ray tube 1 and I.D. The X-ray fluoroscopic image of the patient is displayed on the screen of the second monitor 12 using I8 or the like.
Then, with reference to such a perspective image, as shown in FIG. 3, the opening degree and the rotation angle of the wire collimator 3 are adjusted so that the lesion a of the patient P is surrounded by the line-shaped line shadow 3a.

Next, referring to the perspective image displayed on the second monitor 12, the light pen 15a is used to remotely operate the wire cursor 5a of the marking device 5 via the CPU 14, and as shown in FIG. The line shadow 5b of the wire cursor 5a is displayed at the position L1 where the block 17a is set, and the position data designated by the wire cursor 5a is stored in the memory 16 while being confirmed on the second monitor 12.
Then, similarly, the position L2 at which the second block 17b is set is set.
Each data is stored in the procedure of position data at position L3 and position data at position L3 at which the third block 17c is set.

Then, in practice, the blocks 17a, 17b,
To install 17c, after stopping X-ray fluoroscopy, the light source device 4 is turned on by using the handheld operating device 11 of the radiation treatment room 9 where the patient P is, and the patient's skin surface is irradiated with light rays. CPU based on data stored in memory 16
A drive signal is sent from 14 to the marking device 5. At this time, on the first monitor 10, as shown in FIG. 4, an image obtained by marking a portion to be shielded in the fluoroscopic image used for storing the position data is displayed.

The marking device 5 which has received the drive signal sequentially moves the wire cursor 5a as shown in FIGS. 5 (A) to 5 (C), and the position where the first block 17a should be placed by the line shadow 5b. (A), the position (B) where the second block 17b should be installed, and the position (C) where the third block 17c should be installed are designated. Therefore, the operator simply installs the lead block 17 on the block base 6 as instructed,
The setting of the radiation irradiation range is completed. Next, the radiation positioning apparatus of the second embodiment will be described. This device uses the same hardware as in the first embodiment.

Similarly to the first embodiment, the X-ray tube 1, I.D. The X-ray fluoroscopic image of the patient is displayed on the second monitor 12 using I8 or the like. Then, referring to this perspective image, without driving the marking device, as shown in FIG.
A coordinate for setting a is marked with the light pen 15a, and the CPU 14 stores the marked coordinate data in the memory 1
Save to 6. Similarly, data is saved in the procedure of coordinate data for setting the second block 17b and coordinate data for setting the third block 17c.

After all the data have been input in this way, in the radiation treatment room 9 in which the patient P is located, the handheld operating device 11 is operated to turn on the light source device 4 and the data stored in the memory 16 is changed. Based on this, the marking device 5 is driven. Then, the wire cursor 5a of the marking device 5 can be moved in the same manner as in the first embodiment to set the radiation irradiation range.

[0019]

In the radiation positioning apparatus according to the present invention, after inputting the setting data of the lead block used for shielding the radiation in a separate room, the marking apparatus in the radiation positioning room is driven based on the input data to set the lead block. Since the position to be designated is designated, the radiation irradiation range can be set accurately in a short time. Further, since the order of setting the lead blocks is instructed by the wire cursor of the marking device, the work load is reduced, it is not necessary to work while checking the fluoroscopic image, and the operator can be prevented from being exposed to radiation.

[Brief description of drawings]

FIG. 1 is a diagram showing a basic configuration of a radiation positioning apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a main configuration of the device.

FIG. 3 is a diagram illustrating setting of an opening degree and a rotation angle of a wire collimator.

FIG. 4 is a diagram illustrating marking for specifying the position of a lead block.

FIG. 5 is a diagram showing a procedure for setting a lead block in an illumination field.

FIG. 6 is a diagram showing a basic configuration of a conventional radiation positioning apparatus.

FIG. 7 is a diagram showing a perspective image referred to when a lead block is set using the same apparatus.

[Explanation of symbols]

 3 wire collimator 4 light source device 5 marking device 11 handheld operator 12 second monitor 13 graphic superimposing circuit 15 input device 16 memory

Claims (2)

[Claims] 1. A radiation positioning device for locating a lesion before irradiating the lesion of the patient with radiation to treat the lesion, and a light source device for irradiating the patient with a light beam through a wire collimator through which radiation passes and an irradiation field. A block base on which a block used for shielding radiation in is placed, and a marking device for indicating a portion where the block is to be installed in a radiation field by a light beam by a line shadow of a wire cursor,
While displaying the patient's perspective image and the wire cursor line shadow on the monitor at the same time, the remote control of the wire cursor, the means to save the position data pointed by this wire cursor in the memory system, and the memory when setting the block And a means for driving a wire cursor of the marking device based on position data stored in the system. 2. A radiation positioning device for locating a lesion before irradiating the lesion of a patient with radiation to treat the lesion, and a light source device for irradiating the patient with a ray through a wire collimator that transmits the radiation, and an irradiation field. A block base on which a block used for shielding radiation in is placed, and a marking device for indicating a portion where the block is to be installed in a radiation field by a light beam by a line shadow of a wire cursor,
A means for saving the coordinate data of the part to be protected from radiation in the memory system while referring to the fluoroscopic image of the patient, and the wire cursor of the marking device based on the coordinate data saved in the memory system when setting the block. And a means for driving the radiation positioning apparatus.