![OncoFreeze AI - simple, one-button, deviceless correction that reduces scan time6 and setup while enhancing patient comfort](https://marketing.webassets.siemens-healthineers.com/40816a29977a6d9a/21e85f9b5d7a/v/25421f6c56fe/siemens-healthineers_mi_oncofreeze_click.png)
OncoFreeze AIは、PETにおける呼吸モーションマネジメントの課題を解決します。収集時間の延長が不要であるOncoFreeze技術の利点を基に、OncoFreeze AIはSiemens Healthineers独自のデバイスレス波形と解剖学的アルゴリズム技術を統合し、ボタンをクリックするだけで、PET呼吸同期を実現することができます。
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OncoFreeze AIは、PETにおける呼吸モーションマネジメントの課題を解決します。収集時間の延長が不要であるOncoFreeze技術の利点を基に、OncoFreeze AIはSiemens Healthineers独自のデバイスレス波形と解剖学的アルゴリズム技術を統合し、ボタンをクリックするだけで、PET呼吸同期を実現することができます。
OncoFreeze AIは、患者とPET/CT装置ともに外部の呼吸波形取得デバイスを使う必要がなく、PET呼吸同期画像の再構成に使用される呼吸波形を取得します。
デバイスレス波形は、PETリストモード生データから直接得られる呼吸信号であり、FlowMotionの連続的なベッドの動きを利用して、常に体内の位置を把握し、軸方向に拡張されたPET収集のための呼吸信号を決定します。また、デバイスレス波形を用いることで、もし外部デバイスが故障した場合でも呼吸波形を取得できる利点があります。
収集時間の延長が不要なOncoFreeze技術
OncoFreezeは従来の位相法ではなく振幅法を応用し、Mass Preservation Optical Flowアルゴリズムを利用した呼吸同期技術です。Static画像と最適な振幅範囲を用いた呼吸同期画像(HD・Chest)から三次元的に呼吸の動きによるボケ情報を計算し、画像再構成の中に組み込みます。これにより、100%の収集カウントを活用できるため、収集時間の延長をせずに呼吸同期画像を取得することができます。
ALPHA technology
Siemens Healthineers独自の自動画像認識技術で、基本的な人体構造物の識別を行い、画像再構成を行う処理技術です。OncoFreeze AIにおいては、CTの位置決め画像から、呼吸運動の補正対象となる領域を自動的に特定することができます。
Case 1
01Case 2
01Case 3
01Case 4
01OncoFreeze AI provides sharp visualization of liver metastasis using deviceless respiratory motion management
Patient: 155.1 cm, 58 kg
Method: 18FDG 249.1 MBq, Uptake 62 min, Scan time 20 min, OSEM+PSF+TOF, 4i5s, 440 x 440, Zoom 1.0, All pass filter
Patient: 43.9 kg
Method: 18FDG 159.9 MBq, Uptake 63 min, Scan time 14.4 min, OSEM+PSF+TOF, 4i5s, 440 x 440, Zoom 1.0, All pass filter
Patient: 74.3 kg
Method: 18FDG 270.5 MBq, Uptake 70 min, Scan time 18.3 min, OSEM+PSF+TOF, 4i5s, 440 x 440, Zoom 1.0, All pass filter
OncoFreeze AI shows similar image quality and motion management compared to respiratory gating device
Patient: 153.3 cm, 53.2 kg
Method: 18FDG 166 MBq, Uptake 60 min, Scan time 20 min, OSEM+PSF+TOF, 4i5s, 440 x 440, Zoom 1.0, All pass filter
OncoFreeze AI provides sharp visualization of liver metastasis using deviceless respiratory motion management
Patient: 155.1 cm, 58 kg
Method: 18FDG 249.1 MBq, Uptake 62 min, Scan time 20 min, OSEM+PSF+TOF, 4i5s, 440 x 440, Zoom 1.0, All pass filter
Patient: 43.9 kg
Method: 18FDG 159.9 MBq, Uptake 63 min, Scan time 14.4 min, OSEM+PSF+TOF, 4i5s, 440 x 440, Zoom 1.0, All pass filter
Patient: 74.3 kg
Method: 18FDG 270.5 MBq, Uptake 70 min, Scan time 18.3 min, OSEM+PSF+TOF, 4i5s, 440 x 440, Zoom 1.0, All pass filter
OncoFreeze AI shows similar image quality and motion management compared to respiratory gating device
Patient: 153.3 cm, 53.2 kg
Method: 18FDG 166 MBq, Uptake 60 min, Scan time 20 min, OSEM+PSF+TOF, 4i5s, 440 x 440, Zoom 1.0, All pass filter
OncoFreeze AI provides sharp visualization of liver metastasis using deviceless respiratory motion management
Patient: 155.1 cm, 58 kg
Method: 18FDG 249.1 MBq, Uptake 62 min, Scan time 20 min, OSEM+PSF+TOF, 4i5s, 440 x 440, Zoom 1.0, All pass filter
OncoFreeze AI画像を体験していただくためのツールです。スライダーオプションを左右に動かすことによって、画像を比較することができます。
その他
追加の技術的前提条件が適用される場合があります。
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