JPS61149140A - Apparatus for displaying heat administration quantity - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION This invention relates to a thermal dose display device for tumor treatment.

[Technical background of the invention and its problems 3 Hyperthermia therapy, in which a part of the body is irradiated with electromagnetic waves or ultrasonic waves to warm the body and treat tumors, has developed, and various treatment devices have appeared.

Hyperthermia therapy does not only need to be performed once, but requires long-term treatment. Tumors that survive once heated become resistant to heat, so they can be treated after a certain amount of time. Heat treatment must be performed, and it is necessary to control the temperature and time as well as the amount of heat administered.

Conventionally, the amount of heat administered has been expressed as the product of heating temperature and heating time, and the value has been displayed as a total trend graph or the like.

However, as shown in FIG. 2, the survival rate (survival rate) of WL patients in tumor treatment decreases exponentially. This characteristic is affected by the type of tumor, oxygen partial pressure PH, etc., but the survival rate suddenly decreases after the heating temperature reaches 42°C, and even a 1°C difference in the heating temperature can make a huge difference in survival rate. I can see that there is a tenfold difference.

For this reason, the simple product of heating temperature and heating time cannot be said to be the accurate amount of heat administered to the tumor.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a heat dosage display device that can calculate an accurate heat dosage by improving the drawbacks of the conventional methods described above.

[Summary of the invention]

The heating temperature was corrected with a weighting function suitable for 5 during treatment, and the product of the corrected heating temperature and heating time was displayed as the heat dose.

〔Effect of the invention〕

The amount of heat administered during thermotherapy can be obtained as an accurate amount of heat administered to the tumor, and the effect of the thermotherapy can be quantitatively expressed as a quantitative value.

In addition, since the amount of heat administered is expressed as a numerical value, the history of treatment for ulcers can be easily compared with other tumors and other patients, which is effective as a guideline for heat treatment.

[Embodiments of the invention]

FIG. 1 shows an embodiment of the present invention.

The treatment time and treatment temperature are input from the input device, the timer is set for the treatment time, and the treatment temperature is set in the heating device section 3.

The heating device section 3 irradiates a part of the subject 5 with electromagnetic waves or ultrasonic waves through the applicator 4 for the treatment time at the input treatment temperature, and a timer 2 is used to heat and treat the tumor. The clock 6 is operated only during the treatment time. Clock 6 is a clock that determines the ink for displaying the amount of heat administered, and is specified as, for example, 10 minutes. The clock 6 instructs the temperature measurement unit 7 to measure the temperature at predetermined intervals ◇The temperature measurement unit 7', which has received instructions from the clock 6, detects the subject 5 who is being heated by the heating device unit 3. Measure the actual temperature of the

The measured temperature data is input to the weighting function unit 8 and the heat dose calculation unit 9. The weighting function unit 8 creates a weighting function from the relationship between heating temperature and survival rate shown in FIG. For example, in Figure 2, a certain period of time (for example, 10 minutes)
When the heating temperature is 42°C, the survival rate is 50% (point A) in Figure 2, so the weighting function is 1150% = 2, heating temperature 43
In the case of °C (point B in Figure 2), the survival rate is 20%, so the weighting function is 1/20% = 5.

You can think of it as having a correspondence table between the heating temperature and the weighting function, and by inputting the heating temperature, the weighting function
outputs the weighting function to the heat dose calculator 9. The heat dosage calculator 9 calculates the heat dosage from the input temperature, weight function, and time (in this embodiment, the interval determined by the clock 6). For example, temperature 42. FC, weight function 2, ink/<A/10m1n then heat dosage = 4
2°CX2810=840('C, m1n) Tonal.

The calculated heat dose is input to an integrator 10 that calculates the heat dose of To t a 1 during treatment, and to a display controller 11.

The heat dose input to the integrator 10 is input to the display controller U as the cumulative heat dose.The heat dose input to the display controller 11 and the cumulative heat dose are displayed on the display device 12 as shown in FIG. 3, for example. displayed on the display. The above operations are performed at intervals determined by a clock for the treatment time.

In addition, the bar graph C in FIG. 3 shows the heat dose, and the line graph D shows the cumulative heat dose.

[Other embodiments of the invention]

The weighting function used in this example does not need to be one type, and several types of weighting functions suitable for the target tumor may be prepared.

Furthermore, although it is difficult to define the survival rate for actual living organisms using the survival rate data used to create the weighting function, it is said that experimental results on animals and humans and experimental results on cultured cells are in good agreement. .

Further, although the display format shown in FIG. 3 is used in this embodiment, a simple meter or other display format may be used.

Further, in this embodiment, only one treatment was described, but long-term display is also possible by adding a memory function.

[Brief explanation of drawings]

FIG. 1 is a diagram of an embodiment of the present invention, FIG. 2 is a diagram showing the relationship between survival rate and temperature, and FIG. 3 is a diagram showing an example of display in this embodiment. 1... Input device 2... Timer 3... Warming device section 4... Applicator 5... Subject 6.
...Clock 7...Temperature measurement section 8...Weighting function device 9...Heat dose calculation section 10...Integrator 11.
...Display controller 12...Display device agent Patent attorney Noriyuki Chika (& Ma or 1 person) No.
1 Figure 3 Figure 3

Claims (1)

[Claims] In a heating treatment device for humans or animals, means for inputting a heating temperature, means for inputting a heating time, means for correcting the inputted heating temperature with a weighting function, and the corrected heating temperature. A heat dose display device comprising means for calculating a temperature and the input heating time, and displaying the calculated value as a heat dose.