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Automatic on-the-fly positron emission tomography (PET) scan planning and optimization

A tomography and electronic technology, applied in the fields of radiological diagnosis instruments, diagnosis, echo tomography, etc., can solve problems such as inability to adapt to typical clinical workflow changes, inability to adapt to individual patients, etc., to improve image quality, uniformity Image quality, effect of reducing scan time

Pending Publication Date: 2020-08-21
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods are retrospective or do not adapt to individual patients and / or do not accommodate variations in typical clinical workflows for patient scans

Method used

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  • Automatic on-the-fly positron emission tomography (PET) scan planning and optimization
  • Automatic on-the-fly positron emission tomography (PET) scan planning and optimization
  • Automatic on-the-fly positron emission tomography (PET) scan planning and optimization

Examples

Experimental program
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Embodiment Construction

[0019] Existing CT / PET workflows require the administration of radiopharmaceuticals for PET, followed by a defined time interval, typically around one hour, in which the patient is expected to remain still. The patient is then loaded into the CT / PET system and CT imaging is performed to establish the axial FOV and generate an attenuation map for use in PET reconstruction. PET imaging data acquisition is then performed in a single acquisition interval, or stepwise at multiple couch positions for longer axial FOVs. In selecting the radiopharmaceutical dose and acquisition time(s), by standard setting for the type of imaging procedure being performed and the waiting period between the administration of the radiopharmaceutical and the start of imaging and for the patient body mass index (BMI) dose adjustments to guide medical personnel. Dose and acquisition time settings are designed to ensure that enough positron-electron annihilation events are recorded to provide the desired i...

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Abstract

A non-transitory computer-readable medium stores instructions readable and executable by a workstation (18) including at least one electronic processor (20) to perform an acquisition and reconstruction method (30, 32). The method includes: acquiring emission imaging data using an emission image acquisition device (12) wherein the acquiring is scheduled to be performed over an acquisition time; during the acquiring, measuring a count or count rate of the acquired emission imaging data; during the acquiring, adjusting the acquisition time based on the measured count or count rate to generate anadjusted acquisition time; stopping the acquiring at the adjusted acquisition time; and reconstructing the emission imaging data acquired over the adjusted acquisition time to generate one or more reconstructed images.

Description

technical field [0001] The following generally relates to the field of medical imaging, the field of emission imaging, the field of positron emission tomography (PET) imaging, the field of single photon emission computed tomography (SPECT) imaging, and related fields. Background technique [0002] Current clinical practice for planning positron emission tomography (PET) considers four factors: dose injected, patient size (eg, body mass index or BMI), uptake time (time between injection and PET scan), and Scan time for each table position (or table lateral velocity in continuous table motion acquisition). A common practice is that when the wait time and scan time for each table position are set, the dose injected can be adjusted based on patient size (in general, the larger the patient weight or BMI, the more dose is administered I) to ensure image quality for accurate diagnosis. Another common practice is to adjust the scan time per table position according to the injected...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16H30/20
CPCG16H30/20A61B6/032A61B6/037A61B6/5235A61B6/582G06T11/003
Inventor 白传勇A·安德烈耶夫
Owner KONINKLJIJKE PHILIPS NV
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