JPH0319841Y2 - - Google Patents
Info
- Publication number
- JPH0319841Y2 JPH0319841Y2 JP1987131624U JP13162487U JPH0319841Y2 JP H0319841 Y2 JPH0319841 Y2 JP H0319841Y2 JP 1987131624 U JP1987131624 U JP 1987131624U JP 13162487 U JP13162487 U JP 13162487U JP H0319841 Y2 JPH0319841 Y2 JP H0319841Y2
- Authority
- JP
- Japan
- Prior art keywords
- fat
- phantom
- equivalent part
- hyperthermia
- fat equivalent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 206010020843 Hyperthermia Diseases 0.000 claims description 14
- 230000036031 hyperthermia Effects 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 12
- 210000003205 muscle Anatomy 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 10
- 239000004033 plastic Substances 0.000 description 5
- 239000000523 sample Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920001817 Agar Polymers 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 2
- 239000008272 agar Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 210000000577 adipose tissue Anatomy 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 210000004003 subcutaneous fat Anatomy 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000001931 thermography Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Description
この考案は、ハイパーサーミア装置を評価する
ために用いるフアントムに関する。
This invention relates to a phantom used to evaluate hyperthermia devices.
ハイパーサーミアにおいて、加温方式によつて
は人体脂肪層の厚みの影響をうけて深部腫瘍
（癌）の治療ができない場合がある。
例えば、電磁波による誘電加温方式では脂肪層
の抵抗損失が筋肉層よりも大きいので、脂肪層
（皮下脂肪）が過熱しやすく、このため脂肪の厚
さが約２cm以上の患者には適用しがたいことがあ
る。
このように、特に深部加温を行なう場合、脂肪
層の厚みが治療効果に与える影響が大きいことか
ら、実際の治療に先立ち、ハイパーサーミア装置
の脂肪層の厚みによる有効性を評価することは、
臨床上非常に有意義なことである。
ハイパーサーミア装置の評価はフアントムを用
いて行なわれる。
すなわち、ハイパーサーミア装置によつてフア
ントムを加温してみて温度分布（加温パターン）
などの加温情報を得る。
従来より脂肪等価フアントムとして２層構造の
フアントムが用いられている。すなわち、従来の
フアントムは、第２図に示すように、寒天やTX
−150（米国Oil Center Reserch社の商品名）な
どの高含水物質からなる筋肉等価部１と、ポリエ
ステル樹脂などの硬質プラスチツクからなる脂肪
等価部６とを積層した２層構造にして構成されて
いる。
そして、脂肪等価部６の上などに加温アプリケ
ータ３を配置し、電磁波などの加温エネルギーを
入射してこのフアントムを加温する。筋肉等価部
１などにはサーミスタや熱電対等の多数の測温プ
ローブ４が刺し入れられており、測温装置５によ
つて多数点での温度計測が行われて温度分布が測
定される。
あるいは図示しないが、このフアントムをスプ
リツト型に構成して、赤外線温度分布装置などに
よりサーモグラフイを測定することもある。
In hyperthermia, depending on the heating method, it may not be possible to treat deep tumors (cancer) due to the influence of the thickness of the human body fat layer. For example, in the dielectric heating method using electromagnetic waves, the resistance loss of the fat layer is greater than that of the muscle layer, so the fat layer (subcutaneous fat) tends to overheat, and therefore cannot be applied to patients with a fat thickness of about 2 cm or more. There is something I want to do. In this way, especially when performing deep heating, the thickness of the fat layer has a large influence on the therapeutic effect, so it is important to evaluate the effectiveness of the hyperthermia device based on the thickness of the fat layer before the actual treatment.
This is of great clinical significance. Evaluation of hyperthermia devices is performed using a phantom. In other words, the temperature distribution (heating pattern) was determined by heating the phantom using a hyperthermia device.
Obtain heating information such as Conventionally, a phantom with a two-layer structure has been used as a fat equivalent phantom. In other words, as shown in Figure 2, the conventional Phantom is made of agar or TX.
It has a two-layer structure in which a muscle equivalent part 1 made of a highly water-containing substance such as -150 (trade name of Oil Center Research, USA) and a fat equivalent part 6 made of a hard plastic such as polyester resin are laminated. . Then, the heating applicator 3 is placed on the fat equivalent part 6, and heating energy such as electromagnetic waves is applied to heat the phantom. A large number of temperature measuring probes 4 such as thermistors and thermocouples are inserted into the muscle equivalent part 1 and the like, and a temperature measuring device 5 measures the temperature at multiple points to measure the temperature distribution. Alternatively, although not shown, the phantom may be configured in a split type, and thermography may be measured using an infrared temperature distribution device or the like.
しかしながら、このように脂肪等価部６として
硬質プラスチツクを用いる従来のフアントムで
は、その成型が非常に困難であるという問題があ
るばかりか、一度成型してしまえばその形状・厚
みＬなどが一義的に決定されてしまい、多目的な
使用ができない。つまり、このような従来のフア
ントム場合、目的に応じて形状・厚みなどを定め
たフアントムをその都度製作しなければならず、
手間や経費などを多く費やさなければならないと
いう問題があるのである。
この考案は、形状・厚みなどの自由度が高く、
これらが測定目的等に応じて任意に変更でき、測
定目的等に応じていちいち作製する手間や費用を
節約できる、ハイパーサーミアフアントムを提供
することを目的とする。
However, in conventional phantoms that use hard plastic as the fat equivalent part 6, there is a problem that not only is it extremely difficult to mold, but also that once molded, the shape and thickness L are unique. It is fixed and cannot be used for multiple purposes. In other words, in the case of such conventional phantoms, it is necessary to manufacture each phantom with a shape, thickness, etc. determined according to the purpose.
The problem is that it requires a lot of time and money. This idea has a high degree of freedom in terms of shape and thickness.
It is an object of the present invention to provide a hyperthermia phantom in which these can be arbitrarily changed according to the purpose of measurement, etc., and the labor and cost of manufacturing each one according to the purpose of measurement can be saved.
この考案によれば、筋肉等価部と、脂肪等価部
とからなるハイパーサーミアフアントムにおい
て、伸縮強度が高い可塑性の薄膜でなる袋体と、
該袋体に適宜の量だけ入れられたゲル状もしくは
流体状の脂肪等価物質とから、上記の脂肪等価部
を構成したことを特徴とする。
According to this invention, in a hyperthermia phantom consisting of a muscle equivalent part and a fat equivalent part, a bag body made of a plastic thin film with high elastic strength;
The bag is characterized in that the fat equivalent portion is constituted by a gel-like or fluid fat-equivalent substance placed in an appropriate amount in the bag.
フアントムの脂肪等価部は、伸縮強度が高い可
塑性の薄膜でなる袋体に、ゲル状もしくは流体状
の脂肪等価物質を適宜の量だけ入れて構成してい
る。そのため、袋体に入れる脂肪等価物質の量を
変えれば、それに応じて袋体も変形するので、脂
肪等価部を任意の形状（厚み）とすることができ
る。
したがつて、このフアントムを用いれば、手間
や経費を多く費やすことなく、脂肪等価部の厚み
を種々に変えて、ハイパーサーミア装置の性能を
評価する実験を行うことができる。
The fat equivalent part of the Phantom is constructed by filling a bag body made of a plastic thin film with high elastic strength and containing an appropriate amount of a gel-like or fluid-like fat equivalent substance. Therefore, if the amount of fat equivalent material put into the bag body is changed, the bag body also deforms accordingly, so that the fat equivalent part can be made into any shape (thickness). Therefore, by using this phantom, it is possible to conduct experiments to evaluate the performance of the hyperthermia device by varying the thickness of the fat equivalent part without spending much time or money.
この考案の一実施例にかかるハイパーサーミア
のフアントムは、第１図に示すように、筋肉等価
部１と、脂肪等価部２とを２層構造にして構成さ
れている。筋肉等価部１は寒天やTX−150など
の高含水物質よりなる。脂肪等価部２は、たとえ
ばシリコンゴムなどの伸縮強度が高い可塑性の薄
膜でなる袋２１に、ゲル状もしくは流体状の脂肪
等価物質を適宜の量だけ入れて構成している。こ
のゲル状もしくは流体状の脂肪等価物質を袋２１
に注入したり、排出したりするため、注入・排出
口２２が設けられている。注入器２３などを用い
て、ゲル状もしくは流体状の脂肪等価物質をこの
注入・排出口２２から注入する。その注入された
脂肪等価物質の量に応じて脂肪等価部２の厚みＬ
がより容易に変化するように、袋２１は蛇腹状に
形成されている。袋２１内にもし空気が残留して
いるようであれば、この注入・排出口２２から容
易に取り出すことができる。なお、注入後は、脂
肪等価物質が注入・排出口２２から外に溢れ出な
いように図示しないクリツプなどでこの注入・排
出口２２を閉塞する。
このゲル状もしくは流体状の脂肪等価物質とし
ては、たとえば、小麦粉、油、食塩水の混合物質
が考えられる。重量比にして、
小麦粉：油：食塩水（0.9％）＝500：225：25
で混合すれば、周波数451MHzにおいて、誘電率
7.3、導電率0.038（Ｓ／ｍ）という特性を有し、
これはおよそ人体の脂肪のそれに等しい値であ
る。
そして、脂肪等価部２の上などに加温アプリケ
ータ３を配置し、電磁波などの加温エネルギーを
入射してこのフアントムを加温する。筋肉等価部
１などにはサーミスタや熱電対等の多数の測温プ
ローブ４が刺し入れられており、測温装置５によ
つて多数点での温度計測が行われて温度分布が測
定される。
A hyperthermia phantom according to an embodiment of this invention has a two-layer structure including a muscle equivalent part 1 and a fat equivalent part 2, as shown in FIG. The muscle equivalent part 1 is made of a highly water-containing substance such as agar or TX-150. The fat equivalent portion 2 is constructed by filling a bag 21 made of a plastic thin film with high elastic strength, such as silicone rubber, with an appropriate amount of a gel-like or fluid-like fat equivalent substance. This gel-like or fluid-like fat equivalent substance is packed in a bag 21.
An inlet/outlet 22 is provided for injecting and discharging the liquid. Using a syringe 23 or the like, a gel-like or fluid-like fat equivalent substance is injected through the injection/discharge port 22 . The thickness L of the fat equivalent part 2 depends on the amount of the injected fat equivalent substance.
The bag 21 is formed into a bellows shape so that it can be changed more easily. If air remains in the bag 21, it can be easily taken out through the injection/discharge port 22. After the injection, the injection/discharge port 22 is closed with a clip or the like (not shown) so that the fat equivalent substance does not overflow from the injection/discharge port 22. This gel-like or fluid-like fat equivalent substance may be, for example, a mixture of flour, oil, and saline. If you mix flour: oil: salt water (0.9%) = 500:225:25 in terms of weight ratio, the dielectric constant will be
7.3, conductivity 0.038 (S/m),
This is approximately equivalent to the amount of fat in the human body. Then, a heating applicator 3 is placed on the fat equivalent part 2, etc., and heating energy such as electromagnetic waves is applied to heat the phantom. A large number of temperature measuring probes 4 such as thermistors and thermocouples are inserted into the muscle equivalent part 1 and the like, and a temperature measuring device 5 measures the temperature at multiple points to measure the temperature distribution.
この考案のハイパーサーミアフアントムによれ
ば、手間や経費を多く費やすことなく、脂肪等価
部の形状を任意に変えることができる。そのた
め、このハイパーサーミアフアントムを用いれ
ば、脂肪等価部の形状を種々に変えながら行うハ
イパーサーミア装置の性能評価実験を簡便にかつ
少ない費用で行うことができる。
According to the hyperthermia phantom of this invention, the shape of the fat equivalent part can be changed arbitrarily without spending a lot of time and money. Therefore, by using this hyperthermia phantom, it is possible to conduct performance evaluation experiments of a hyperthermia device while changing the shape of the fat equivalent part in various ways easily and at low cost.
第１図はこの考案の一実施例の斜視図、第２図
は従来例の斜視図である。
１……筋肉等価部、２，６……脂肪等価部、２
１……袋、２２……注入・排出口、２３……注入
器、３……加温アプリケータ、４……測温プロー
ブ、５……測温装置。
FIG. 1 is a perspective view of one embodiment of this invention, and FIG. 2 is a perspective view of a conventional example. 1... Muscle equivalent part, 2, 6... Fat equivalent part, 2
1... Bag, 22... Injection/discharge port, 23... Injector, 3... Warming applicator, 4... Temperature measuring probe, 5... Temperature measuring device.
Claims (1)
ハイパーサーミアフアントムにおいて、 前記脂肪等価部を伸縮性の薄膜で形成した注
入・排出口を有する袋体と、 この袋体内に前記注入口より注入されたゲル状
もしくは流体状の脂肪等価物質とで構成し、 前記袋体内への前記脂肪等価物質の注入量に応
じて脂肪等価部の形状を変えられるようにしたこ
とを特徴とするハイパーサーミアフアントム。[Scope of Claim for Utility Model Registration] A hyperthermia phantom with a two-layer structure in which a muscle equivalent part and a fat equivalent part are laminated, a bag body having an injection/discharge port in which the fat equivalent part is formed of a stretchable thin film; It is composed of a gel-like or fluid fat equivalent substance injected into the bag body from the injection port, and the shape of the fat equivalent part can be changed depending on the amount of the fat equivalent substance injected into the bag body. Hyperthermia Phantom is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987131624U JPH0319841Y2 (en) | 1987-08-31 | 1987-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987131624U JPH0319841Y2 (en) | 1987-08-31 | 1987-08-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6437204U JPS6437204U (en) | 1989-03-07 |
| JPH0319841Y2 true JPH0319841Y2 (en) | 1991-04-26 |
Family
ID=31387867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987131624U Expired JPH0319841Y2 (en) | 1987-08-31 | 1987-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0319841Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5234897B2 (en) * | 2007-08-02 | 2013-07-10 | 国立大学法人 千葉大学 | Phantom and measuring device using the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58105764A (en) * | 1981-12-18 | 1983-06-23 | 斎藤 元章 | Warm heat treating apparatus due to high frequency heating system |
| JPS59129070A (en) * | 1983-01-10 | 1984-07-25 | 呉羽化学工業株式会社 | Method and apparatus for controlling temperature distribution in living body |
-
1987
- 1987-08-31 JP JP1987131624U patent/JPH0319841Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58105764A (en) * | 1981-12-18 | 1983-06-23 | 斎藤 元章 | Warm heat treating apparatus due to high frequency heating system |
| JPS59129070A (en) * | 1983-01-10 | 1984-07-25 | 呉羽化学工業株式会社 | Method and apparatus for controlling temperature distribution in living body |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6437204U (en) | 1989-03-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Patel et al. | A self-heated thermistor technique to measure effective thermal properties from the tissue surface | |
| Borrell et al. | Comparison of in vivo temperatures produced by hydrotherapy, paraffin wax treatment, and Fluidotherapy® | |
| Valvano et al. | Thermal conductivity and diffusivity of biomaterials measured with self-heated thermistors | |
| Roemer | Engineering aspects of hyperthermia therapy | |
| Strohbehn et al. | A survey of computer simulations of hyperthermia treatments | |
| Giering et al. | Review of thermal properties of biological tissues | |
| Haemmerich et al. | RF ablation at low frequencies for targeted tumor heating: In vitro and computational modeling results | |
| Rose et al. | The stretching window part two: rate of thermal decay in deep muscle following 1-MHz ultrasound | |
| Robinson et al. | New materials for dielectric simulation of tissues | |
| Samulski et al. | Correlations of thermal washout rate, steady state temperatures, and tissue type in deep seated recurrent or metastatic tumors | |
| Davidson et al. | Measurement of the thermal conductivity of polyacrylamide tissue-equivalent material | |
| Cao et al. | Flow effect on lesion formation in RF cardiac catheter ablation | |
| Lagendijk et al. | Hyperthermia dough: a fat and bone equivalent phantom to test microwave/radiofrequency hyperthermia heating systems | |
| Brezovich et al. | A practical system for clinical radiofrequency hyperthermia | |
| JPH0319841Y2 (en) | ||
| Sekins et al. | Determination of perfusion field during local hyperthermia with the aid of finite element thermal models | |
| Stauffer et al. | Comparative thermal dosimetry of interstitial microwave and radiofrequency-LCF hyperthermia | |
| Goddard et al. | Ultrasound has no anti-inflammatory effect. | |
| Hill et al. | Power deposition patterns in magnetically-induced hyperthermia: A two-dimensional low-frequency numerical analysis | |
| CN204951307U (en) | Wax therapy bag | |
| Lee et al. | Influence of water bolus temperature on measured skin surface and intradermal temperatures | |
| CN104665773A (en) | Local anaesthesia range measuring apparatus | |
| CN111341189A (en) | Human body structure model made of conductive material | |
| JPH0445698Y2 (en) | ||
| Arunachalam et al. | A thermal monitoring sheet with low influence from adjacent waterbolus for tissue surface thermometry during clinical hyperthermia |