摘要:
In a photoacoustic measurement apparatus and a probe, artifacts due to photoacoustic waves generated in a surface portion of a subject are reduced without increasing the repetition period of photoacoustic measurement. A measurement light emitting unit 12 emits measurement light toward a subject. An acoustic wave detector 11 detects photoacoustic waves generated within the subject due to the measurement light. A correction light source 13 emits correction light toward the subject. A light intensity detector 14 detects reflected light generated by reflection of the correction light, which is emitted toward the subject, from the subject. In a probe 10, the correction light source 13 and the light intensity detector 14 are disposed between the measurement light emitting unit 12 and the acoustic wave detector 11.
摘要:
An apparatus according to an aspect of the present invention includes first obtaining means configured to obtain an ultrasound image generated by transmitting and receiving ultrasonic waves to and from an object, display control means configured to control display means to display the ultrasound image, second obtaining means configured to obtain a photoacoustic signal generated by receiving photoacoustic waves generated from light irradiated to the object, and saving control means configured to obtain information representing a save instruction given when the ultrasound image is being displayed, and configured to save in storage means the ultrasound image corresponding to a time point of the save instruction and information derived from the photoacoustic signal based on the information representing the save instruction.
摘要:
A catheter-based imaging apparatus comprises a catheter having a proximal end and a distal end. An optical emitter is configured to emit optical excitation signals from a distal portion of the catheter. One or more ultrasound transducers are configured for: (a) transmission of acoustic excitation signals from the distal portion of the catheter; and (b) detection of ultrasound response signals from an object of interest at or near to the distal portion of the catheter at frequencies which include a lower receive frequency at least as low as 10 MHz and a higher receive frequency at least as high as 35 MHz. The one or more ultrasound transducers are thereby configured to detect response signals comprising photoacoustic response signals from the object of interest at the lower receive frequency and high resolution imaging signals from the object of interest at the higher receive frequency.
摘要:
Disclosed is a method for assisting in a diagnosis using images obtained by a plurality of signal transceivers. The method includes causing a drive unit for driving a probe inserted in a blood vessel to execute a first driving to perform measurement using a first signal transceiver on the probe and a second driving to perform measurement using a second signal transceiver on the probe. The method includes acquiring a signal measured using the first signal transceiver on the probe during the first driving, information indicating a position of the first signal transceiver when the signal is obtained, a signal measured using the second signal transceiver on the probe during the second driving, and information indicating a position of the second signal transceiver when the signal is obtained. The method includes causing a display unit to simultaneously display a first vascular image at a first intravascular position obtained using the first signal transceiver and a second vascular image at the first intravascular position obtained using the second signal transceiver.
摘要:
An ultrasound scan probe and support mechanism are provided for use in a multi-modality mammography imaging system, such as a combined tomosynthesis and ultrasound imaging system. In one embodiment, the ultrasound components may be positioned and configured so as not to interfere with the tomosynthesis imaging operation, such as to remain out of the X-ray beam path. Further, the ultrasound probe and associated components may be configured to as to move and scan the breast tissue under compression, such as under the compression provided by one or more paddles used in the tomosynthesis imaging operation.
摘要:
Systems and methods directed to adaptive radiotherapy planning are provided. In some aspects, provided system and method include producing synthetic images from magnetic resonance data using relaxometry maps. The method includes applying corrections to the data and generating relaxometry maps therefrom. In other aspects, a method for adapting a radiotherapy plan is provided. The method includes determining an objective function based on dose gradients from an initial dose distribution, and generating an optimized plan based on updated images, using aperture morphing and gradient maintenance algorithms without need for organ-at-risk contouring. In yet other aspects, a method for obtaining 4D MR imaging using a temporal reshuffling of data acquired during normal breathing, a method for deformable image registration using a sequentially applied semi-physical model regularization method for multimodality images, and a method to generate 4D plans using an aperture morphing algorithm based on 4D CT or 4D MR imaging are provided.
摘要:
Disclosed is a method of generating a diagnostic image by using a photoacoustic material. The method includes determining a wavelength band of light maximally absorbed by a photoacoustic material, based on at least one or more photoacoustic materials injected into an object, irradiating light, which corresponds to the determined wavelength band, onto an internal region of interest (ROI) of the object to acquire a photoacoustic signal corresponding to the irradiated light, generating a photoacoustic image indicating the ROI by using the photoacoustic signal, and combining and displaying the generated photoacoustic image and an image expressing that the light is being irradiated onto the ROI.
摘要:
In a photoacoustic image generation apparatus and an insert, even in a case where an insert allowing the injection of liquid is inserted to a deep position from the surface of a subject, it is possible to check the position of the insert on a photoacoustic image. A hollow tube (155) is inserted into an inner cavity of an insertion needle body (151) that has an opening and has the inner cavity thereinside. A light guide member (152) is housed in the hollow tube (155), and a light absorption member is provided in a distal end portion of the hollow tube (155). A proximal end portion (156) has an inlet (157) of liquid and a chamber (158) that communicates with the inlet (157) and the inner cavity of the insertion needle body (151). The diameter of the inner cavity of the insertion needle body (151) is larger than the outer diameter of the hollow tube (155). Liquid injected through the inlet (157) can flow from the opening of the insertion needle body (151) through the chamber (158) and the space between the inner cavity of the insertion needle body (151) and the hollow tube (155).
摘要:
An echo-scintigraphic probe for medical applications and the method of merging images. It is constituted by the union of an ultrasound probe suitably integrated, both in geometric terms, and in terms of image processing, with a scintigraphic probe or gamma camera (3). With a single application of said probe, one is able to provide a double image of the object under examination. The ultrasound probe is housed in the head, above the plane of the collimator and kept projecting to favor the direct contact with the body part of the patient to be examined. The collimator is able to obtain images of the biodistribution of a radiolabelled drug by radiation with frontal incidence, maintaining the characteristics of the ultrasound probe. The probe is applicable to both clinical diagnosis and intraoperative diagnosis of cancer with the use of radio tracers. A guided diagnostic method is disclosed that realizes a functional integration of a pair of ultrasound and scintigraphic images concurrently obtained by the echo-scintigraphic probe.