Visit Report of
the Promotion Center for Radiation Treatment at Hitachi Ltd., Power Systems Company
The proton emission system for cancer treatment is the strongest weapon for gathering medical tourists to Japan from the world.
I am glad for you to be modest and happy life.
I have variously studied the proton emission system for cancer treatment made by Hitachi Ltd.
Though it’s regrettable that I must omit a lot of its technical and detail information belonging to the company’s secret, first, I deeply respect that its proton emission system made by Hitachi is going to get the No.1 position in the wonderful results and fine evaluations on the most competitive, medical field in the world, especially in the USA.
It is a large fruit brought from today’s visit to the company that I have been taught that, for example, the Hitachi system can cure even skin cancer because of the company’s continuous efforts and innovations related with the methods of proton emission. Otherwise, particle emission machines made by a competitor can’t treat skin cancer owing to an old version as of how to emit proton.
In this connection, the proton emission system can’t treat organs sealed with thin skin, for example, stomach and small and large intestines, because proton beams have too strong energy as well as the “conventional” photon beams.
But the proton emission system can treat even cancers of eyes, an orbit of the eye, the esophagus, the liver, the pancreas, the rectum, bones and soft tissues which haven’t been treated due to their too deep positions in the body by the conventional photon emission system.
The proton emission machine is the greatest and has a mysterious power like God because the scope of treatment results has reached vast fields over a human body.
The number of proton emission machines including heavy (carbon) particles emission machines is about ten in each Japan, USA and Europe. But the number is still very small, especially, China, the Middle East and Russia haven’t developed any proton emission machine.
Those advanced, gigantic medical machines like proton or heavy (carbon) particle emission ones need not only huge capital funds but also a lot of medical staff like veteran doctors, medical physicians and therapists. These pile up of excellent medical doctors and technicians can only supply an advanced medical service like the proton or heavy (carbon) particle emission system.
So, for us who hope to promote medical tourism to Japan, first, the fact is very important that there isn’t any those machines in China, Russia, the Middle East or the South East Asian countries.
Second, the fact or history is extremely crucial that even USA has developed only proton emission machines. The USA hasn’t intentionally created any carbon emission machines. The reason is that hospitals wouldn’t get much money if they use proton emission machines shooting more times than carbon particles emission ones having about three times stronger (heavier) power than proton emission machines.
By the way, in the USA the medical fee is calculated by the number of emission shots of protons. So, for American hospitals it’s better for their profits to utilize proton emission machines needing more emission shots than heavy particle emission machines.
By the way, killing effects of a proton emission system against cancer cells is just 1.1 times as large as the effect of “conventional” photon emission, but the power of heavy (carbon) particles emission is about three times as the photon emission. These results are presented by a doctor at the attached hospital of Tokyo University.
First, the above situation means that Japan facilitating both systems of proton and carbon emission has very powerful weapons to invite many tourists or patients of various cancers from all of the world..
Second, powerful heavy (carbon) particles or proton emissions system can treat any cancer patient by fewer times than a “conventional” photon emission style. And more powerful carbon particles emission can kill cancer cells by fewer times than even the proton emission.
So, the medical fee in Japan is naturally apt to cost very much cheaper than that of USA. It teaches us that not a few American people will desire to come to Japanese hospitals due to receive advanced medical services and save their money.
Even private insurance companies in the USA, too, would advise for Americans to receive Japanese hospitals’ services with cheaper costs.
At the end, I will thank deeply for the kind teaching and giving useful and detail information for us by Hitachi Ltd.
Next, the medical tourism companies to invite foreign patients will have to make efforts to promote international exchanges in the field of medical services.
Good luck!
平成23年6月28日 火曜日
東京通訳アカデミー・学院長・岡村寛三郎
〒101-0052東京都千代田区神田小川町2丁目6番12号 東観小川町ビル8階
☎03-3233-7518 Fax.03-3294-7410 Email：okamura3@oksemi.co.jp
≪資料≫
重粒子線治療の治療期間
がんに冒された臓器を必ずしも切除する必要はありません。がん病巣に重粒子線を照射することにより、早期の肺がんならば場合によっては１日で根治できます。重粒子線治療そのものは患者の負担が軽いので、通院でも充分治療を受けられ-ますが、検査や治療スケジュールをスムーズに実施するため、原則として入院することになっています。
通常の放射線の場合、30～40回の照射が必要ですが、（独）放射線医学総合研究所（放医研）における重粒子線の平均照射回数は13回で済んでいます。このように重粒子線ならば非常に短い期間で治療が終ります。たとえば、Ⅰ期肺がんの場合、臨床試験の始まった頃は6週間に18回でしたが、臨床試験が進むにつれて9回、4回となり、現在は１回で終る治療法が開発されています。
肝がんについても、最初は15回でしたが、その後12回、8回、4回となり、現在は2日間で2回という治療法の開発が進められています。前立腺がんについては、通常の放射線治療では40回前後の照射が必要ですが、重粒子線ならば20回で治療が終ります。
現在、放医研で行われている高度先進医療や臨床試験の対象となる部位の照射回数および治療期間は次のとおりです。
No. 対象部位 照射回数 治療期間
１ 頭蓋底・傍頚髄腫瘍 １６ ４週間
２ 頭頚部腫瘍 １６ ４週間
３ 非小細胞肺がん
●肺野末梢型
●肺門・肺門近接型
●肺門・縦隔リンパ節転移型
４
９
１２
１週間
３週間
３週間
４ 肝細胞がん ４ １週間
５ 前立腺がん ２０ ５週間
６ 骨・軟部腫瘍 １６ ４週間
７ 直腸がん術後再発 １６ ４週間
８ 子宮がん ２０ ５週間
９ 中枢神経腫瘍 ２０ ５週間
10 膵がん
●術前
●局所進行（切除非適応）
８
１２
２週間
３週間
参考資料：（独）放射線医学総合研究所パンフレット「重イオン治療プロトコールにおける適応疾患について」 （肝臓がんは高度先進医療の照射回数と期間を示します。）
陽子線と重粒子線の比較
重粒子線：陽子線と重粒子線の比較
効果が高いと言われる粒子線ですが、陽子線治療と重粒子線治療を比較してみます。
陽子線治療
線量の集中性 通常の光子線より線量の集中性が格段に優れているので、周囲の正常臓器に対する障害を著しく軽減できる。
細胞の殺傷効果 通常の光子線と同じ
酸素濃度の低いがんに対する効果 通常の光子線と同じ
放射線抵抗性がんに対する効果 通常の光子線と同じ
分割照射回数 通常の光子線より少ない
重粒子線治療
線量の集中性 陽子線よりも更に集中性が優れている
細胞の殺傷効果 陽子線より２～３倍の効果
酸素濃度の低いがんに対する効果 通常の光子線より効果がある
放射線抵抗性がんに対する効果 通常の光子線より効果がある
分割照射回数 陽子線より更に少ない
以上
the Promotion Center for Radiation Treatment at Hitachi Ltd., Power Systems Company
The proton emission system for cancer treatment is the strongest weapon for gathering medical tourists to Japan from the world.
I am glad for you to be modest and happy life.
I have variously studied the proton emission system for cancer treatment made by Hitachi Ltd.
Though it’s regrettable that I must omit a lot of its technical and detail information belonging to the company’s secret, first, I deeply respect that its proton emission system made by Hitachi is going to get the No.1 position in the wonderful results and fine evaluations on the most competitive, medical field in the world, especially in the USA.
It is a large fruit brought from today’s visit to the company that I have been taught that, for example, the Hitachi system can cure even skin cancer because of the company’s continuous efforts and innovations related with the methods of proton emission. Otherwise, particle emission machines made by a competitor can’t treat skin cancer owing to an old version as of how to emit proton.
In this connection, the proton emission system can’t treat organs sealed with thin skin, for example, stomach and small and large intestines, because proton beams have too strong energy as well as the “conventional” photon beams.
But the proton emission system can treat even cancers of eyes, an orbit of the eye, the esophagus, the liver, the pancreas, the rectum, bones and soft tissues which haven’t been treated due to their too deep positions in the body by the conventional photon emission system.
The proton emission machine is the greatest and has a mysterious power like God because the scope of treatment results has reached vast fields over a human body.
The number of proton emission machines including heavy (carbon) particles emission machines is about ten in each Japan, USA and Europe. But the number is still very small, especially, China, the Middle East and Russia haven’t developed any proton emission machine.
Those advanced, gigantic medical machines like proton or heavy (carbon) particle emission ones need not only huge capital funds but also a lot of medical staff like veteran doctors, medical physicians and therapists. These pile up of excellent medical doctors and technicians can only supply an advanced medical service like the proton or heavy (carbon) particle emission system.
So, for us who hope to promote medical tourism to Japan, first, the fact is very important that there isn’t any those machines in China, Russia, the Middle East or the South East Asian countries.
Second, the fact or history is extremely crucial that even USA has developed only proton emission machines. The USA hasn’t intentionally created any carbon emission machines. The reason is that hospitals wouldn’t get much money if they use proton emission machines shooting more times than carbon particles emission ones having about three times stronger (heavier) power than proton emission machines.
By the way, in the USA the medical fee is calculated by the number of emission shots of protons. So, for American hospitals it’s better for their profits to utilize proton emission machines needing more emission shots than heavy particle emission machines.
By the way, killing effects of a proton emission system against cancer cells is just 1.1 times as large as the effect of “conventional” photon emission, but the power of heavy (carbon) particles emission is about three times as the photon emission. These results are presented by a doctor at the attached hospital of Tokyo University.
First, the above situation means that Japan facilitating both systems of proton and carbon emission has very powerful weapons to invite many tourists or patients of various cancers from all of the world..
Second, powerful heavy (carbon) particles or proton emissions system can treat any cancer patient by fewer times than a “conventional” photon emission style. And more powerful carbon particles emission can kill cancer cells by fewer times than even the proton emission.
So, the medical fee in Japan is naturally apt to cost very much cheaper than that of USA. It teaches us that not a few American people will desire to come to Japanese hospitals due to receive advanced medical services and save their money.
Even private insurance companies in the USA, too, would advise for Americans to receive Japanese hospitals’ services with cheaper costs.
At the end, I will thank deeply for the kind teaching and giving useful and detail information for us by Hitachi Ltd.
Next, the medical tourism companies to invite foreign patients will have to make efforts to promote international exchanges in the field of medical services.
Good luck!
平成23年6月28日 火曜日
東京通訳アカデミー・学院長・岡村寛三郎
〒101-0052東京都千代田区神田小川町2丁目6番12号 東観小川町ビル8階
☎03-3233-7518 Fax.03-3294-7410 Email：okamura3@oksemi.co.jp
≪資料≫
重粒子線治療の治療期間
がんに冒された臓器を必ずしも切除する必要はありません。がん病巣に重粒子線を照射することにより、早期の肺がんならば場合によっては１日で根治できます。重粒子線治療そのものは患者の負担が軽いので、通院でも充分治療を受けられ-ますが、検査や治療スケジュールをスムーズに実施するため、原則として入院することになっています。
通常の放射線の場合、30～40回の照射が必要ですが、（独）放射線医学総合研究所（放医研）における重粒子線の平均照射回数は13回で済んでいます。このように重粒子線ならば非常に短い期間で治療が終ります。たとえば、Ⅰ期肺がんの場合、臨床試験の始まった頃は6週間に18回でしたが、臨床試験が進むにつれて9回、4回となり、現在は１回で終る治療法が開発されています。
肝がんについても、最初は15回でしたが、その後12回、8回、4回となり、現在は2日間で2回という治療法の開発が進められています。前立腺がんについては、通常の放射線治療では40回前後の照射が必要ですが、重粒子線ならば20回で治療が終ります。
現在、放医研で行われている高度先進医療や臨床試験の対象となる部位の照射回数および治療期間は次のとおりです。
No. 対象部位 照射回数 治療期間
１ 頭蓋底・傍頚髄腫瘍 １６ ４週間
２ 頭頚部腫瘍 １６ ４週間
３ 非小細胞肺がん
●肺野末梢型
●肺門・肺門近接型
●肺門・縦隔リンパ節転移型
４
９
１２
１週間
３週間
３週間
４ 肝細胞がん ４ １週間
５ 前立腺がん ２０ ５週間
６ 骨・軟部腫瘍 １６ ４週間
７ 直腸がん術後再発 １６ ４週間
８ 子宮がん ２０ ５週間
９ 中枢神経腫瘍 ２０ ５週間
10 膵がん
●術前
●局所進行（切除非適応）
８
１２
２週間
３週間
参考資料：（独）放射線医学総合研究所パンフレット「重イオン治療プロトコールにおける適応疾患について」 （肝臓がんは高度先進医療の照射回数と期間を示します。）
陽子線と重粒子線の比較
重粒子線：陽子線と重粒子線の比較
効果が高いと言われる粒子線ですが、陽子線治療と重粒子線治療を比較してみます。
陽子線治療
線量の集中性 通常の光子線より線量の集中性が格段に優れているので、周囲の正常臓器に対する障害を著しく軽減できる。
細胞の殺傷効果 通常の光子線と同じ
酸素濃度の低いがんに対する効果 通常の光子線と同じ
放射線抵抗性がんに対する効果 通常の光子線と同じ
分割照射回数 通常の光子線より少ない
重粒子線治療
線量の集中性 陽子線よりも更に集中性が優れている
細胞の殺傷効果 陽子線より２～３倍の効果
酸素濃度の低いがんに対する効果 通常の光子線より効果がある
放射線抵抗性がんに対する効果 通常の光子線より効果がある
分割照射回数 陽子線より更に少ない
以上
