64results about How to "Imaging time is short" patented technology

A scanning image display system which includes a plurality of scanning image displays each including a light source adapted to emit a laser beam, and a scan unit having a first scan section adapted to scan the laser beam emitted from the light source in a first direction on a projection surface, and a second scan section adapted to scan the laser beam in a second direction substantially perpendicular to the first direction. The first scan sections are resonant scan sections which are faster than the second scan sections in scan speed. The first scan sections are heated with light during the time that an image is formed and a reset period of the second scan sections in order to control resonant frequencies of the first scan sections.

The invention relates to a medical image imaging method and device, computer equipment and a storage medium. The method comprises the steps of obtaining an original medical image and segmentation information; performing gray correction and image enhancement on the original medical image to obtain a to-be-segmented image; segmenting a plurality of regions of interest from the to-be-segmented imagebased on the segmentation information; inputting each region of interest into the combined prediction model to obtain a prediction probability corresponding to each region of interest; and generatinga target medical image according to each prediction probability. By adopting the method, the time can be shortened, and no side effect is generated to patients.

When determined that a body-motion is produced before starting a main-imaging, a sequence-switching control-unit controls operation so as to switch from a usual-imaging sequence to a body-motion adaptive-sequence corresponding to an imaging-portion of a subject P by referring to a body-motion adaptive-sequence storage-unit. Moreover, upon a determination that a body-motion is produced during the main-imaging according to the usual-imaging sequence, the sequence-switching control-unit refers to a collected-data storage-unit, and controls operation so as to perform a retake by switching to the body-motion adaptive-sequence if an already-collected data-volume is less than a predetermined volume. By contrast, if the already-collected data-volume is equal to or more than the predetermined volume at a time point when determined that a body-motion is produced during the main-imaging according to the usual-imaging sequence, the sequence-switching control-unit stops the main-imaging, and controls a data-processing unit so as to reconstruct a magnetic resonance image only with collected data.

A head mount display includes a first frame, a display, a second frame, and a junction. The display is mountable on the first frame. The second frame is configured to be pivotably connected to the first frame and includes a circuit module. The circuit module includes a power circuit configured to supply power to the display. The junction is configured to electrically connect the display and the circuit module.

A method for forming images on a silver halide color photographic photosensitive material having a substrate and photographic structural layers thereon, including, at least three silver halide color photosensitive layers having different photosensitive regions, respectively, and at least one non-photosensitive hydrophilic colloid layer is disclosed. At least one of the photosensitive layers contains 90 mol % or more of silver chloride. Shortly after the silver halide color photographic photosensitive material has been scan-exposed with laser beams, the material is rapid-processed with a low replenishing amount.

A method for driving a charge-transfer type solid-state image pick-up device, wherein the charge-transfer type solid-state image pick-up device comprises: high sensitivity photoelectric conversion elements for executing photoelectric conversion with relatively high sensitivity; low sensitivity photoelectric conversion elements for executing photoelectric conversion with relatively low sensitivity; and vertical transfer channels for transferring signal charges from said high sensitivity photoelectric conversion elements and said low sensitivity photoelectric conversion elements, the method comprising a charge transfer step of individually reading/transferring first signal charges from said high sensitivity photoelectric conversion elements and second signal charges from said low sensitivity photoelectric conversion elements onto said vertical transfer channels, without executing a high speed charge transfer operation for the vertical transfer channels after exposure of said solid-state image pick-up device.

The invention discloses a modular foundation slope radar monitoring system, which consists of a modular foundation slope radar, a PSD camera and a slope, wherein the modular foundation slope radar iscomposed of a combined reflective array surface, a primary feed source, a transmitting and receiving channel and a data processing module, the combined reflective array surface is formed by splicing aplurality of modular reflective array surfaces, and each modular reflective array surface is composed of more than three non-collinear feature light spots and a plurality of basic reflection units; the PSD camera is used for quickly measuring the position coordinates of each basic reflection unit; and the primary feed source radiates electromagnetic waves, irradiates the combined reflective arraysurface, forms a high-gain pencil beam in the specified direction through adjusting the phase compensation of each basic reflection unit, carries out rapid electrical scanning on the slope and key monitoring points, receives an echo signal, transmits the echo signal to the data processing module via the transmitting and receiving channel to obtain a three-dimensional radar image and an interferometric phase diagram and calculates the displacement and deformation of the slope.

The invention discloses a short-range millimeter wave fast three-dimensional imaging method with an arbitrary linear array configuration. The method comprises the following steps of constructing an echo signal and an imaging formula; performing NUFFT or FFT on a coordinate dimension in the echo signal; transforming the spectral domain data in the four-dimensional space into three dimensions by dimension reduction; using NUFFT for imaging. The short-range millimeter wave fast three-dimensional imaging method with an arbitrary linear array configuration provided by the invention, directed to a short-range millimeter-wave three-dimensional imaging system of "MIMO-plane scan" mode, can achieve accurate and fast three-dimensional imaging of arbitrary MIMO line array configuration with short required time-consuming for imaging and low computational complexity by adopting a "fast Gaussian mesh" based NUFFT technology.

The invention discloses a production method for a quick imaging sequence single-short EPI-SSFP (Echo Planar Imaging-Steady-State Free Procession). The method comprises the following steps: setting an MRI (Magnetic Resonance Imaging) system through a selected EPI sequence template to obtain an initial state of the MRI system; calculating a deflection angle of an input radio frequency signal RF according to the selected True-SSFP sequence template; calculating the signal intensity applied to a level selective gradient in the MRI system and the time of duration according to the deflection angle; exciting the MRI system according to the calculated signal intensity and the time of duration during inputting the radio frequency signal, so as to obtain an initial single-shot EPI-SSFP sequence; then performing steady state processing for the sequence to obtain the quick imaging sequence single-shot EPI-SSFP. With the adoption of the method, the single-shot EPI-SSFP imaging quality is highly superior to that of EPI sequence, and the imaging time is highly less than that of the True-SSFP sequence, and the imaging quality meets the clinical requirement; in addition, the imaging time is short, the examination time of a patient is reduced, and thus the mobility of the patient is improved.

The invention discloses a terahertz tomography system based on three-dimensional Radon transformation and an imaging method and an operation method thereof. The imaging system comprises a terahertz emission source, a sample table, a beam conversion unit, a terahertz detection array, a support frame and a lifting frame which are arranged along the transmission direction of a terahertz beam opticalpath. The sample table is arranged on the support frame through a vertical shaft rotating stepping motor; the beam conversion unit comprises a first diffractive optical element and a second diffractive optical element; and a lifting stepping motor is arranged on the lifting frame, an output shaft of the lifting stepping motor is connected with a horizontal shaft rotating stepping motor, and an output shaft of the horizontal shaft rotating stepping motor is connected with a U-shaped frame. The terahertz tomography system based on three-dimensional Radon transformation and the imaging method andthe operation method thereof have the advantages of being good in imaging stability, short in imaging time, high in imaging resolution and large in imaging depth of field.

The invention discloses a virtual face contour adjustment method. The method is realized through steps of obtaining human face three-dimensional image data; determining an index with high correlationwith the human face contour; obtaining the result of the high correlation index based on the human face three-dimensional image data; performing virtual adjustment of the facial contour based on the result of the high correlation index; repeating a step 3, and determining whether the aesthetic effect of a three-dimensional image of the facial contour obtained after virtual adjustment meets the requirement or not in combination with visual judgment of a person. The method is advantaged in that a simulation stereo image is matched with the determination of the high correlation index of the humanface contour, a subjective error and the ineffectiveness of the low correlation index determined by the traditional aesthetic standard on improvement of the human face can be effectively improved, virtual face contour adjustment is carried out to facilitate formulation of a highly optimized surgery implementation scheme, and the improvement effect of the face contour is improved.

A gamma camera, a system, and a method are described, wherein a large gamma camera can be subdivided into two or more smaller gamma cameras, each independently positioned for SPECT data acquisition. These transformable gamma cameras make more efficient use of the gamma photon detector area. Tiled arrays of semiconductor gamma detectors are especially suited for such transformation.

Provided are a captured image evaluation apparatus, a captured image evaluation method, and a captured image evaluation program capable of evaluating a thickness and a density of stacked cultured cells in a short imaging time. The captured image evaluation apparatus includes: an image acquisition section 52 that acquires captured images obtained by imaging a subject under a condition in which a numerical aperture of an objective lens is changed; a thickness estimation section 53 that estimates a thickness of the subject on the basis of a low NA captured image obtained under a condition in which the numerical aperture of the objective lens is relatively small; and a density estimation section 54 that estimates a density of the subject on the basis of a high NA captured image obtained under a condition in which the numerical aperture of the objective lens is relatively large.

Before an observation region of the imaging optical system reaches an observation position in a culture container, a vertical position of the culture container at the observation position is precedently detected by an auto-focus displacement sensor. In a case where an auto-focus control is performed on the basis of the position, an error between the precedently detected vertical position of the container at the observation position and a vertical position of the container at a time point when an observation region of the imaging optical system is scanned up to the observation position is acquired, and an objective lens is moved in an optical axis direction on the basis of the error.