JP2016032764A - 医療用注入手順用に患者ベースのパラメータを生成するシステム - Google Patents
医療用注入手順用に患者ベースのパラメータを生成するシステム Download PDFInfo
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Abstract
【解決手段】システムは、少なくとも部分的に注入手順のタイプに基づいて注入手順の少なくとも1つのフェーズのパラメータを決定するパラメータ生成システムを含む。パラメータ生成システムは、少なくとも一部が薬剤中の作用物質の濃度に基づき、且つ少なくとも一部が患者パラメータに基づき、患者のパラメータとともに変化する関数に基づいて、患者に搬送されるべき薬剤の量を決定する。患者のパラメータは例えば、体重、肥満度指数、体表面積又は心拍出量である。薬剤は例えば、画像化手順に用いる造影強化物質を含む。
【選択図】図1
Description
本発明は、2006年12月29日に出願した米国仮特許出願第60/877,779号、及び2007年7月28日に出願した米国仮特許出願第60/976,002号の利益を要求し、それらの内容は引用を以て、本願への記載加入とする。
本願は、2005年11月23日に出願された公開された国際出願WO/2006/058280(国際特許出願PCT/US05/042891)、及び公開された国際出願WO/2006/055813(国際特許出願PCT/US2005/041913)に開示され及び/又は権利要求された事項に関する事項を含み、それらの開示は引用を以て、本願への記載加入とし、本願の一部とする。
本発明は、流体を搬送する装置、システム及び方法に関し、特に患者に薬剤流体を送出する装置、システム及び方法に関し、特に医療注入手順中に患者に造影剤を送出する装置、システム及び方法に関する。
一態様に於いて、本発明は、少なくとも1部が注入手順のタイプに基づいて、注入手順の少なくとも第1フェーズ(例えば、複数のフェーズ)のパラメータを決定するパラメータ生成システムを含むシステムを提供する。パラメータ生成システムは、少なくとも1部が薬剤内の物質濃度に基づいて、及び少なくとも1部が患者パラメータに依存し患者パラメータとともに変化する機能に基づいて、患者に送出されるべき薬剤の体積を決定する。患者パラメータは例えば、体重、肥満度指数、体表面積又は心拍出量である。薬剤は例えば、画像化手順に用いられる造影強化物質を含む。
V1=体重×X×Y
を用いて計算され、ここでV1は第1部分の体積であり、Xは体重の関数、Yは薬剤中の造影強化物質の濃度の関数である。Xは例えば、アルゴリズムから特定の患者の体重(又は他の患者パラメータ)について決定され、Xは体重の関数として演算される。Xは代わりに、テーブルから特定の患者の体重(又は他の患者パラメータ)について決定され、Xは体重の関数として示される。
本発明はまた、上記したパラメータ生成システムを提供する。
注入手順に関してここで用いられるように、語句「プロトコル」は、注入手順時に患者に送出されるべき流体の量を規定する流量、注入される体積、持続時間等のようなパラメータの群を指す。そのようなパラメータは注入手順の経過に亘って、変化することができる。ここで用いられるように、語句「フェーズ」は一般に、或る期間(又はフェーズ持続時間)中に患者に送出されるべき流体の量を規定するパラメータの群を指し、該期間は注入手順の総持続時間よりも短くなり得る。このようにして、フェーズのパラメータは、フェーズの持続時間に対応した時刻に亘って注入を記述する。特定の注入手順についての注入プロトコルは例えば、単フェーズ(単一のフェーズ)、2フェーズ(2つのフェーズ)又は多フェーズ(2以上のフェーズであるが、一般的に2を超えるフェーズである)として記載される。多フェーズ注入はまた、少なくとも1部の注入手順に亘ってパラメータが連続的に変化する注入を含む。
重量>=102kg(体重が離散化された後)ならば
scanDelay=Tpeak+6
そうでなければ
scanDelay=Tpeak+4
終了
scanDuration<10秒(体重に関係なく)であれば
scanDelay=Tpeak+6
終了
Tend=ScanDelay+ScanDuration
Dgap=ScanDelay+ScanDuration−DC Diag
110A、110B 駆動装置
200 コントローラ
210 ディスプレイ
220 プロセッサ
230 メモリ
300 画像化システム
Claims (21)
- 少なくとも1つのフェーズと少なくとも1つの他方のフェーズとを有している診断上の注入プロトコルのパラメータを決定するパラメータ生成システムであって、
前記少なくとも1つのフェーズでは、造影強化物質を含む薬剤のみが患者に送られ、前記少なくとも1つの他方のフェーズでは、前記薬剤と希釈液の両方が前記患者に送られ、
前記パラメータ生成システムは、
(a)前記薬剤のテストボーラスによる前記患者の心臓血管系の描画の前に利用できる情報を用いて、初期プロトコルのパラメータを決定する少なくとも1つのアルゴリズムであって、前記初期プロトコルは、前記薬剤のみが送られる少なくとも1つのフェーズに対応する、送られる前記薬剤の総量の第1部分V1と、前記薬剤と前記希釈液の両方が送られる少なくとも1つの他方のフェーズに対応する、送られる前記薬剤の総量の第2部分V2とを含む、前記診断上の注入プロトコルの全てのフェーズにおいて前記患者に送られる前記薬剤の総量を決定するのに使用される、少なくとも1つのアルゴリズムを備えており、
(b)前記少なくとも1つのアルゴリズムは、前記薬剤のテストボーラスによる前記患者の心臓血管系の描画に少なくとも部分的に基づいて、前記初期プロトコルのパラメータを調整して、前記診断上の注入プロトコルのパラメータを決定する、
パラメータ生成システム。 - (a)ユーザインターフェイスと、
(b)前記少なくとも1つのアルゴリズムを格納するメモリシステムと、
(c) 前記ユーザインターフェイスと前記メモリシステムとに通信可能に接続されており、前記少なくとも1つのアルゴリズムを実行するプロセッサと、
を更に備えている、請求項1に記載のパラメータ生成システム。 - 前記薬剤を供給する容器は、前記患者に送られる前記薬剤の決定された総量に基づいた前記薬剤の充填量で充填される、請求項1に記載のパラメータ生成システム。
- 前記患者に送られる前記薬剤の総量は、前記薬剤の造影増強物質の濃度に少なくとも部分的に基づいて、且つ、前記患者のパラメータに依存し、前記患者のパラメータによって所定の態様で変化する関数に少なくとも部分的に基づいて決定される、請求項1に記載のパラメータ生成システム。
- 前記患者のパラメータは、体重、肥満度指数、体表面積、又は心拍出量である、請求項4に記載のパラメータ生成システム。
- 送られる前記薬剤の総量の第1部分V1は、式
V1=体重×X×Y
を用いて計算され、Xは、前記患者の体重、肥満度指数、体表面積、又は心拍出量の所定の関数であり、Yは、前記薬剤の造影強化物質の濃度の関数であり、
V1は、前記薬剤のみが送られるフェーズにて送られる前記薬剤の量であり、
前記パラメータ生成システムはまた、前記薬剤と前記希釈液の両方が前記患者に送られる少なくとも第2フェーズにて送られる前記薬剤の総量の第2部分V2を決定し、送られる前記薬剤の総量の第2部分V2は、式
V2=体重×Z
にて決定され、Zは定数である、請求項5に記載のパラメータ生成システム。 - 第1フェーズでの前記薬剤の流量は、前記第2フェーズでの前記薬剤と前記希釈液の混合物の流量とほぼ同じであり、
前記第2フェーズにて前記患者に送られる前記希釈液の量は、V2と、前記第2フェーズにおける前記薬剤の前記希釈液に対する比から計算される、請求項6に記載のパラメータ生成システム。 - 前記パラメータ生成システムは、全てのフェーズにて前記患者に送られる前記薬剤の総量が、前記患者に送るのに利用できる前記薬剤の量を超えているか否かを判定し、
前記パラメータ生成システムはさらに、前記患者に送られる前記薬剤の決定された総量が、前記患者に送るのに使用できる前記薬剤の量を越えている場合、前記患者に送られる前記薬剤の総量を低減するルールを備える、請求項6に記載のパラメータ生成システム。 - 前記第1フェーズにおける前記薬剤の流量は、前記第1フェーズの注入持続時間でV1を除することによって計算され、
前記パラメータ生成システムによって、前記第1フェーズの間に前記薬剤の流量が所定の流量を超えるか否かが判定され、
前記パラメータ生成システムは、前記所定の流量を越えないように前記量V1を調節するルールを備える、請求項7に記載のパラメータ生成システム。 - 前記薬剤を供給する容器は、前記患者に送られる前記薬剤の決定された総量に基づいた前記薬剤の充填量で充填される、請求項6に記載のパラメータ生成システム。
- 増強ピークへの時間と増強ピークのレベルとは、前記薬剤の前記テストボーラスから決定される、請求項10に記載のパラメータ生成システム。
- 前記初期プロトコルは、少なくとも部分的に、前記増強ピークへの時間に基づいて調整される、請求項11に記載のパラメータ生成システム。
- 前記初期プロトコルは、少なくとも部分的に、前記増強ピークへの時間及び前記増強ピークのレベルに基づいて調整される、請求項11に記載のパラメータ生成システム。
- 走査遅延が、少なくとも部分的に、前記増強ピークへの時間に基づいて決定される、請求項13に記載のパラメータ生成システム。
- 前記走査遅延は、式
走査遅延=増強ピークへの時間+C
で計算され、Cは、前記患者の体重、肥満度指数、体表面積又は心拍出量の関数である、請求項14に記載のパラメータ生成システム。 - 前記走査遅延は、式
走査遅延=増強ピークへの時間+C
で計算され、Cは、少なくとも所定の時間の画像化システムの走査持続時間の場合における前記患者の体重、肥満度指数、体表面積又は心拍出量の関数であり、前記走査持続時間が前記所定の時間よりも短い場合、Cは所定の値に設定される、請求項14に記載のパラメータ生成システム。 - 少なくとも部分的に、前記増強ピークのレベルに基づいて、前記第2フェーズにおける前記薬剤の前記希釈液に対する比を調整するか否かについての判定がなされる、請求項13に記載のパラメータ生成システム。
- 前記第2フェーズの持続時間は、以下の式に基づいて計算され、
DDF=走査遅延+走査持続時間−DC Diag
ここでDC Diagは、第1フェーズの持続時間であり、前記走査持続時間は前記画像化システムの走査持続時間である、請求項16に記載のパラメータ生成システム。 - DC Diagは、前記画像化システムの前記走査持続時間に要素Kを加えることにより決定される、請求項18に記載のパラメータ生成システム。
- Kは0から10秒の範囲である、請求項19に記載のパラメータ生成システム。
- 前記第1フェーズの最短の注入持続時間が、前記パラメータ生成システムに入力され得る、請求項20に記載のパラメータ生成システム。
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JP6189768B2 (ja) | 2017-08-30 |
JP2014138870A (ja) | 2014-07-31 |
JP2010514502A (ja) | 2010-05-06 |
DK2097835T3 (en) | 2018-09-03 |
EP2097835A2 (en) | 2009-09-09 |
US20100113887A1 (en) | 2010-05-06 |
JP5486315B2 (ja) | 2014-05-07 |
JP6208205B2 (ja) | 2017-10-04 |
US9302044B2 (en) | 2016-04-05 |
EP3376504A1 (en) | 2018-09-19 |
JP6013381B2 (ja) | 2016-10-25 |
JP2014138871A (ja) | 2014-07-31 |
JP2014144348A (ja) | 2014-08-14 |
JP2014176645A (ja) | 2014-09-25 |
JP2016135315A (ja) | 2016-07-28 |
JP6189767B2 (ja) | 2017-08-30 |
WO2008085421A2 (en) | 2008-07-17 |
WO2008085421A3 (en) | 2008-08-21 |
US20160263309A1 (en) | 2016-09-15 |
US10463782B2 (en) | 2019-11-05 |
JP2016032763A (ja) | 2016-03-10 |
HUE040477T2 (hu) | 2019-03-28 |
EP2097835B1 (en) | 2018-05-30 |
JP6441852B2 (ja) | 2018-12-19 |
EP2097835A4 (en) | 2011-05-18 |
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