CN112022187A - Multi-period scanning control method and device, console equipment and CT system - Google Patents
Multi-period scanning control method and device, console equipment and CT system Download PDFInfo
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Abstract
The embodiment of the invention provides a multi-period scanning control method, a multi-period scanning control device, console equipment and a CT system. The embodiment of the invention obtains the longest breath holding time of a subject to be subjected to multi-period scanning and the scanning protocol of the multi-period scanning before CT scanning, determines the scanning time, the scanning delay time, the period voice navigation time and the hardware switching preparation time among sequences in the multi-period scanning according to the scanning protocol, judges whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time among the sequences is less than or equal to the longest breath holding time, if so, determines whether a period voice navigation cancellation condition is met based on the scanning delay time and the period voice navigation time of each scanning sequence, if so, cancels the period voice navigation in the multi-period scanning, can automatically select the period voice navigation for canceling the multi-period scanning according to relevant scanning data, reduces the time consumption of the scanning process and improves the scanning efficiency.
Description
Technical Field
The invention relates to the technical field of medical image processing, in particular to a multi-period scanning control method, a multi-period scanning control device, console equipment and a CT system.
Background
CT (Computed Tomography) imaging is widely used in the medical field. In order to obtain the cooperation of the examinees in the scanning process and improve the scanning success rate, a voice navigation function is added in the CT scanning process at present.
In the related technology, navigation voice is provided before and after scanning of each scanning sequence in multi-period scanning to guide the examinee to carry out corresponding coordination. However, these navigation voices also result in increased time usage of the scanning process, reducing scanning efficiency.
Disclosure of Invention
In order to overcome the problems in the related art, the invention provides a multi-period scanning control method, a multi-period scanning control device, console equipment and a CT system, and the scanning efficiency of multi-period scanning is improved.
According to a first aspect of the embodiments of the present invention, there is provided a multi-period scanning control method, including:
before CT scanning, obtaining the longest breath holding time of a subject to be subjected to multi-period scanning and a scanning protocol of the multi-period scanning;
according to the scanning protocol, determining the scanning time, the scanning delay time, the period voice navigation time and the inter-sequence hardware switching preparation time of each scanning sequence in the multi-period scanning;
judging whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time between the sequences is less than or equal to the longest breath holding time;
and if so, determining whether a period voice navigation cancellation condition is met or not based on the scanning delay time and the period voice navigation time of each scanning sequence, and if so, canceling the period voice navigation in the multi-period scanning.
According to a second aspect of the embodiments of the present invention, there is provided a multi-phase scanning control apparatus including:
the acquisition module is used for acquiring the longest breath holding time of a subject to be subjected to multi-period scanning and a scanning protocol of the multi-period scanning before CT scanning;
the determining module is used for determining the scanning time, the scanning delay time, the period voice navigation time and the inter-sequence hardware switching preparation time of each scanning sequence in the multi-period scanning according to the scanning protocol;
the judging module is used for judging whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time among the sequences is less than or equal to the longest breath holding time;
and the cancellation module is used for determining whether a period voice navigation cancellation condition is met or not based on the scanning delay time and the period voice navigation time of each scanning sequence if the period voice navigation cancellation condition is met, and canceling the period voice navigation in the multi-period scanning if the period voice navigation cancellation condition is met.
According to a third aspect of embodiments of the present invention, there is provided a console device including: the system comprises an internal bus, a memory, a processor and an external interface which are connected through the internal bus; the external interface is used for connecting CT equipment of a CT system;
the memory is used for storing machine readable instructions corresponding to the multi-period scanning control logic;
the processor is configured to read the machine-readable instructions on the memory and perform the following operations:
before CT scanning, obtaining the longest breath holding time of a subject to be subjected to multi-period scanning and a scanning protocol of the multi-period scanning;
according to the scanning protocol, determining the scanning time, the scanning delay time, the period voice navigation time and the inter-sequence hardware switching preparation time of each scanning sequence in the multi-period scanning;
judging whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time between the sequences is less than or equal to the longest breath holding time;
and if so, determining whether a period voice navigation cancellation condition is met or not based on the scanning delay time and the period voice navigation time of each scanning sequence, and if so, canceling the period voice navigation in the multi-period scanning.
According to a fourth aspect of the embodiments of the present invention, there is provided a CT system,
including scanning bed, CT equipment and console equipment, wherein:
the CT equipment is used for controlling a multi-period scanning process according to the instruction sent by the console equipment;
the console device is configured to:
before CT scanning, obtaining the longest breath holding time of a subject to be subjected to multi-period scanning and a scanning protocol of the multi-period scanning;
according to the scanning protocol, determining the scanning time, the scanning delay time, the period voice navigation time and the inter-sequence hardware switching preparation time of each scanning sequence in the multi-period scanning;
judging whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time between the sequences is less than or equal to the longest breath holding time;
and if so, determining whether a period voice navigation cancellation condition is met or not based on the scanning delay time and the period voice navigation time of each scanning sequence, and if so, canceling the period voice navigation in the multi-period scanning.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the embodiment of the invention, the longest breath holding time of a subject to be subjected to multi-period scanning and the scanning protocol of the multi-period scanning are obtained before CT scanning, the scanning time, the scanning delay time, the period voice navigation time and the hardware switching preparation time among sequences in the multi-period scanning are determined according to the scanning protocol, whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time among the sequences is less than or equal to the longest breath holding time is judged, if yes, whether a period voice navigation cancellation condition is met is determined based on the scanning delay time and the period voice navigation time of each scanning sequence, and if yes, the period voice navigation in the multi-period scanning is cancelled, the period voice navigation in the multi-period scanning can be automatically selected and cancelled according to scanning related data, and the scanning efficiency is improved when the scanning process is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the specification.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present specification and together with the description, serve to explain the principles of the specification.
FIG. 1 is a schematic diagram of a scanning process after voice navigation is set.
Fig. 2 is a flowchart illustrating a multi-period scanning control method according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of the scanning process before and after voice navigation during the cancellation period in the two-phase scanning.
Fig. 4 is a functional block diagram of a multi-phase scan control apparatus according to an embodiment of the present invention.
Fig. 5 is a hardware configuration diagram of a console device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of embodiments of the invention, as detailed in the following claims.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used to describe various information in embodiments of the present invention, the information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
A multi-phase scan refers to a plurality of scans of a subject using a plurality of scan sequences.
An important scenario for CT scanning is enhanced scanning. An enhanced scan is a CT scan performed while injecting contrast agent into the blood vessel from a vein, typically the antecubital vein. The enhanced scanning can find the focus which is not found in the flat scanning (scanning without injecting medicine into the blood vessel), and is mainly used for identifying whether the lesion is vascular or nonvascular, determining the relationship between the mediastinal lesion and the great blood vessel of the heart and knowing the blood supply condition of the lesion so as to help to identify good lesion and malignant lesion and the like. Enhanced scanning can increase the information content of a lesion, facilitating qualitative analysis of the lesion and even definitive diagnosis.
Different organ tissues have different capacities for absorbing contrast agents, and according to this characteristic, a physician typically plans to perform a plurality of scans (multi-phase scans) after the drug injection, and sets the time to start the scan for each scan sequence, which is called a multi-phase enhanced scan.
In the multi-stage enhanced scanning, the interval time between two stages can be set according to the clinical diagnosis requirement, for example, the heart + carotid artery combined scanning needs to be set, the carotid artery in the second stage needs to be scanned immediately after the first-stage heart scanning is finished, and the shorter the interval time between two stages is, the better.
In the related art, the procedure of the two-phase scan of the heart + carotid artery is as follows:
before the enhanced scan, the doctor sets the parameters of a multi-phase scan sequence, the first phase is the cardiac scan, and the second phase is the carotid CTA (CT Angiography) scan;
the voice navigation is started and set for guiding the patient to control breathing in the scanning process, so that the scanning part is prevented from moving due to breathing in the scanning process, and the scanning quality is improved;
FIG. 1 is a schematic diagram of a scanning process after voice navigation is set. As shown in fig. 1, after the voice navigation is set, the system plays "please breathe" after 1-scan (corresponding to cardiac scan) is finished, then plays "inhale and hold back" again, then starts to scan the second phase, i.e. 2-scan (corresponding to carotid scan), and plays "please breathe" after scan is finished.
In fig. 1, the interval between the two phase scans is about 4 seconds, which may result in too low concentration of contrast agent in carotid artery during the second phase scan, so that CT value enhancement of carotid artery blood vessel in image is not obvious, quality of scan result is poor, and subsequent diagnosis is affected.
The multi-stage scanning control method provided by the embodiment of the invention can be applied to the multi-stage scanning process of CT, in particular to the multi-stage enhanced scanning process.
The multi-phase scanning control method is explained in detail by the following embodiments.
Fig. 2 is a flowchart illustrating a multi-period scanning control method according to an embodiment of the present invention. As shown in fig. 2, in this embodiment, the multi-period scanning control method may include:
s201, before CT scanning, obtaining the longest breath holding time of a subject to be subjected to multi-period scanning and a scanning protocol of the multi-period scanning.
S202, according to the scanning protocol, determining the scanning time, the scanning delay time, the period voice navigation time and the inter-sequence hardware switching preparation time of each scanning sequence in the multi-period scanning.
S203, judging whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time between the sequences is less than or equal to the longest breath holding time.
And S204, if yes, determining whether a period voice navigation cancellation condition is met or not based on the scanning delay time and the period voice navigation time of each scanning sequence, and if yes, canceling the period voice navigation in the multi-period scanning.
In this embodiment, the maximum breath holding time is the longest time for which the subject can maintain the breath holding state.
In one exemplary implementation, obtaining the maximum breath holding time of the subject to be scanned for multiple periods may include:
the default breath holding time is read from the system as the longest breath holding time of the subject to be scanned for the multiple phases.
In this embodiment, the default breath holding time is preset in the system, and the same longest breath holding time is used as a default for all the examinees. The default breath holding time may be obtained from statistical data. For example, assuming that 95% of the collected breath holding time data of different subjects can reach 4 seconds, the default breath holding time may be set to 4 seconds.
In one exemplary implementation, obtaining the maximum breath holding time of the subject to be scanned for multiple periods may include:
one breath holding time is selected from a plurality of breath holding times set in the system as the longest breath holding time of the subject to be subjected to the multi-phase scanning.
In this embodiment, a plurality of breath holding times are preset in the system, and a scanning executor artificially selects one breath holding time as the longest breath holding time. Therefore, the more appropriate longest breath holding time can be selected according to the specific situation of the examined person, and the scanning success rate and the scanning accuracy are improved. For example, assuming that, in the collected breath holding duration data of different subjects, 60% of the subjects have breath holding durations of up to 4 seconds, 20% of the subjects have breath holding durations of up to 5 seconds, and 20% of the subjects have breath holding durations of up to 6 seconds, then 3 breath holding times may be set in the system: 4 seconds, 5 seconds, 6 seconds.
In one exemplary implementation, obtaining the maximum breath holding time of the subject to be scanned for multiple periods may include:
and receiving the breath holding time input by the user as the longest breath holding time of the examinee to be subjected to the multi-phase scanning.
In this embodiment, the breath holding time input by the user is used as the longest breath holding time, so that the longest breath holding time can be obtained more accurately, and the scanning success rate and the scanning accuracy are improved. According to the embodiment, the breath holding time of the subject can be tested before scanning, and then the breath holding time is input according to the test result.
The scanning protocol of the multi-phase scanning comprises a plurality of scanning sequences, and each scanning sequence corresponds to one-phase scanning. The scanning protocol comprises scanning time, scanning delay time, voice navigation time and hardware switching preparation time among sequences of each scanning sequence.
The scan time refers to the time of performing a line-laying scan on a subject according to a scan sequence. The scan delay time is a time from when the scan key is pressed to when the line scan is started. In the multi-scan, the time when the scan key is pressed in each scan is the same time. The period voice navigation time refers to the voice navigation time between the end of the previous period scanning and the beginning of the next period scanning in the two adjacent periods of scanning.
The hardware switching preparation time is determined by the CT apparatus itself. The time may be stored in the system in advance.
In one exemplary implementation, determining whether the period voice navigation cancellation condition is satisfied based on the scan delay time and the period voice navigation time of each scan sequence may include:
determining the minimum scanning delay time of the last scanning sequence in the multi-period scanning according to the scanning delay time of the first scanning sequence in the multi-period scanning and the period voice navigation time;
if the scanning delay time of the last scanning sequence in the multi-period scanning is less than the minimum scanning delay time, determining that a period voice navigation cancellation condition is met; and if the scanning delay time of the last scanning sequence in the multi-period scanning is greater than or equal to the minimum scanning delay time, determining that the voice navigation cancellation condition is not met.
In this embodiment, the minimum scanning delay time of the last scanning sequence in the multi-period scanning may be equal to the sum of the scanning delay time of the first scanning sequence in the multi-period scanning and the time of all voice navigations from the end of scanning of the first scanning sequence to the end of scanning of the last scanning sequence.
In one exemplary implementation, canceling periodic voice navigation in a multi-period scan includes:
and canceling sending a first period navigation playing instruction to the CT equipment, wherein the first period navigation playing instruction is used for indicating the CT equipment to play voice navigation in the preset time.
The embodiment is suitable for scenes in which the navigation voice is played by the CT equipment. In the scene, after receiving a first period navigation playing instruction sent by the console device, the CT device performs voice navigation during playing at a preset time point according to the first period navigation playing instruction. If the console device does not send the first-period navigation playing instruction to the CT device, the CT device does not play the corresponding voice navigation.
In one exemplary implementation, canceling periodic voice navigation in a multi-period scan includes:
and canceling sending a second period navigation playing instruction to the voice navigation playing module, wherein the second period navigation playing instruction is used for indicating the voice navigation playing module to play voice navigation during the preset time.
The embodiment is suitable for scenes in which navigation voice is played by console equipment. In the scenario, the console device sends a second period navigation playing instruction to the voice navigation playing module deployed on the console device, so as to control the voice navigation playing module to play voice navigation during the preset time. If the console device does not send the second period navigation playing instruction to the voice navigation playing module, the voice navigation playing module will not play the corresponding voice navigation.
In this embodiment, the multi-phase scanning refers to two or more phases of scanning.
The multi-period scanning control method provided by the embodiment of the invention is explained by an application example.
Assume that the maximum breath hold time preset in the system is 3 seconds, and assume that in two phase scans, the first phase scan uses a cardiac scan sequence (hereinafter referred to as S1) and the second phase scan uses a CTA scan sequence (hereinafter referred to as S2). As can be known from the scanning protocol, the scanning Time T1 of S1 is 1 second, the scanning Time T2 of S2 is 1 second, the inter-sequence Hardware switching preparation Time (Hardware Prepare Time) of the two scanning sequences of S1 and S2 is 1 second, the scanning Delay Time PID1(Post Injection Delay) of S1 is 4 seconds, and the scanning Delay Time PID2 of S2 is 4 seconds. The scan end voice time length VT1 of S1 is 1.5 seconds, and the pre-scan voice time length VT2 of S2 is 2 seconds.
The scanning process before the voice guidance during cancellation, i.e., in the case of the voice guidance during non-cancellation, is shown in the upper diagram of fig. 3, and the scanning process after the voice guidance during cancellation is shown in the lower diagram of fig. 3. Fig. 3 is a schematic diagram of the scanning process before and after voice navigation during the cancellation period in the two-phase scanning. In fig. 3, the inter-sequence hardware switching preparation time is abbreviated as hardware preparation time. As can be seen from fig. 3, the sum of the scan time of the two scan sequences and the hardware switch preparation time between the sequences is 1+1+1, 3 seconds, which is equal to the longest breath holding time.
In the case of the reserved period voice navigation, the minimum scan delay time of the scan sequence S2 of the second period scan is 4(PID1) +1+1.5+1+2 is 9.5 seconds, and since the scan delay time PID2 of the scan sequence S2 of the second period scan is 4 seconds and is less than the calculated minimum scan delay time 9.5 seconds of S2, the period voice navigation between S1 and S2 (i.e., 1.5 seconds of the end voice after the end of the first period scan and 2 seconds of the pre-scan voice before the start of the second period scan in fig. 3) can be cancelled, and the cancelled scan process is as shown in the lower graph in fig. 3. After cancellation, the scan delay time of the second scan needs to be recalculated. As shown in fig. 3, after canceling the inter-period voice navigation, the minimum scan delay time of the scan sequence S2 of the second scan is 4(PID1) +1(S1 scan time) +1 (hardware setup time) is 6 seconds.
After the inter-segment voice is cancelled, if the scanning delay time of S2 given in the scanning protocol is less than 6 seconds, the scanning delay time PID2 of S2 in the scanning protocol needs to be automatically corrected to 6 seconds, that is, the PID2 at the time of actual scanning is 6 seconds; if the scan delay time PID2 of S2 given in the scan protocol is greater than 6 seconds but less than 9.5 seconds, the value of the scan delay time PID2 of S2 in the scan protocol is kept unchanged, i.e., PID2 at the time of actual scan is equal to the value set in the scan protocol.
The multi-period scanning control method provided by the embodiment of the invention comprises the steps of obtaining the longest breath holding time of a subject to be subjected to multi-period scanning and the scanning protocol of the multi-period scanning before CT scanning, determining the scanning time, the scanning delay time, the period voice navigation time and the hardware switching preparation time among sequences in the multi-period scanning according to the scanning protocol, judging whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time among the sequences is less than or equal to the longest breath holding time, if so, determining whether a period voice navigation cancellation condition is met based on the scanning delay time and the period voice navigation time of each scanning sequence, if so, canceling the period voice navigation in the multi-period scanning, automatically selecting the period voice navigation for canceling the multi-period scanning according to scanning related data, and reducing the time of the scanning process, the scanning efficiency is improved. Meanwhile, for multi-period enhanced scanning, the quality of a scanning result can be improved.
Based on the above method embodiment, the embodiment of the present invention further provides corresponding apparatus, device, and storage medium embodiments.
Fig. 4 is a functional block diagram of a multi-phase scan control apparatus according to an embodiment of the present invention. As shown in fig. 4, in this embodiment, the multi-period scanning control device may include:
an obtaining module 410, configured to obtain, before the CT scan, the longest breath holding time of a subject to be subjected to the multi-period scan and a scan protocol of the multi-period scan;
a determining module 420, configured to determine, according to the scanning protocol, scanning time, scanning delay time, period voice navigation time, and inter-sequence hardware switching preparation time of each scanning sequence in the multi-period scanning;
a determining module 430, configured to determine whether a sum of a scanning time of each scanning sequence and the inter-sequence hardware switching preparation time is less than or equal to the longest breath holding time;
and a cancellation module 440, configured to determine whether a period voice navigation cancellation condition is satisfied based on the scanning delay time and the period voice navigation time of each scanning sequence if the period voice navigation cancellation condition is satisfied, and cancel the period voice navigation in the multi-period scanning if the period voice navigation cancellation condition is satisfied.
In an exemplary implementation, the cancellation module 440 may be specifically configured to:
determining the minimum scanning delay time of the last scanning sequence in the multi-period scanning according to the scanning delay time of the first scanning sequence in the multi-period scanning and the period voice navigation time;
if the scanning delay time of the last scanning sequence in the multi-period scanning is less than the minimum scanning delay time, determining that a period voice navigation cancellation condition is met; and if the scanning delay time of the last scanning sequence in the multi-period scanning is greater than or equal to the minimum scanning delay time, determining that the voice navigation cancellation condition is not met.
In an exemplary implementation, the cancellation module 440 may be specifically configured to:
and canceling sending a first period navigation playing instruction to the CT equipment, wherein the first period navigation playing instruction is used for indicating the CT equipment to play voice navigation in the preset time.
In an exemplary implementation, the cancellation module 440 may be specifically configured to:
and canceling sending a second period navigation playing instruction to the voice navigation playing module, wherein the second period navigation playing instruction is used for indicating the voice navigation playing module to play voice navigation during the preset time.
In an exemplary implementation process, the obtaining module 410 may be specifically configured to:
the default breath holding time is read from the system as the longest breath holding time of the subject to be scanned for the multiple phases.
In an exemplary implementation process, the obtaining module 410 may be specifically configured to:
and receiving the breath holding time input by the user as the longest breath holding time of the examinee to be subjected to the multi-phase scanning.
In an exemplary implementation process, the obtaining module 410 may be specifically configured to:
one breath holding time is selected from a plurality of breath holding times set in the system as the longest breath holding time of the subject to be subjected to the multi-phase scanning.
The embodiment of the invention also provides the console equipment. Fig. 5 is a hardware configuration diagram of a console device according to an embodiment of the present invention. As shown in fig. 5, the console device includes: an internal bus 501, and a memory 502, a processor 503 and an external interface 504 which are connected through the internal bus, wherein the external interface is used for connecting a CT device of a CT system;
the memory 502 is used for storing machine readable instructions corresponding to multi-period scanning control logic;
the processor 503 is configured to read the machine-readable instructions stored in the memory 502 and execute the instructions to implement the following operations:
before CT scanning, obtaining the longest breath holding time of a subject to be subjected to multi-period scanning and a scanning protocol of the multi-period scanning;
according to the scanning protocol, determining the scanning time, the scanning delay time, the period voice navigation time and the inter-sequence hardware switching preparation time of each scanning sequence in the multi-period scanning;
judging whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time between the sequences is less than or equal to the longest breath holding time;
and if so, determining whether a period voice navigation cancellation condition is met or not based on the scanning delay time and the period voice navigation time of each scanning sequence, and if so, canceling the period voice navigation in the multi-period scanning.
In one exemplary implementation, determining whether a period voice navigation cancellation condition is satisfied based on a scan delay time and a period voice navigation time of each scan sequence includes:
determining the minimum scanning delay time of the last scanning sequence in the multi-period scanning according to the scanning delay time of the first scanning sequence in the multi-period scanning and the period voice navigation time;
if the scanning delay time of the last scanning sequence in the multi-period scanning is less than the minimum scanning delay time, determining that a period voice navigation cancellation condition is met; and if the scanning delay time of the last scanning sequence in the multi-period scanning is greater than or equal to the minimum scanning delay time, determining that the voice navigation cancellation condition is not met.
In one exemplary implementation, canceling periodic voice navigation in a multi-period scan includes:
and canceling sending a first period navigation playing instruction to the CT equipment, wherein the first period navigation playing instruction is used for indicating the CT equipment to play voice navigation in the preset time.
In one exemplary implementation, canceling periodic voice navigation in a multi-period scan includes:
and canceling sending a second period navigation playing instruction to the voice navigation playing module, wherein the second period navigation playing instruction is used for indicating the voice navigation playing module to play voice navigation during the preset time.
In one exemplary implementation, obtaining a maximum breath hold time for a subject to be scanned for a plurality of phases includes:
the default breath holding time is read from the system as the longest breath holding time of the subject to be scanned for the multiple phases.
In one exemplary implementation, obtaining a maximum breath hold time for a subject to be scanned for a plurality of phases includes:
and receiving the breath holding time input by the user as the longest breath holding time of the examinee to be subjected to the multi-phase scanning.
In one exemplary implementation, obtaining a maximum breath hold time for a subject to be scanned for a plurality of phases includes:
one breath holding time is selected from a plurality of breath holding times set in the system as the longest breath holding time of the subject to be subjected to the multi-phase scanning.
The embodiment of the invention also provides a CT system, which comprises a scanning bed, a CT device and a console device, wherein:
the CT equipment is used for controlling a multi-period scanning process according to the instruction sent by the console equipment;
the console device is configured to:
before CT scanning, obtaining the longest breath holding time of a subject to be subjected to multi-period scanning and a scanning protocol of the multi-period scanning;
according to the scanning protocol, determining the scanning time, the scanning delay time, the period voice navigation time and the inter-sequence hardware switching preparation time of each scanning sequence in the multi-period scanning;
judging whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time between the sequences is less than or equal to the longest breath holding time;
and if so, determining whether a period voice navigation cancellation condition is met or not based on the scanning delay time and the period voice navigation time of each scanning sequence, and if so, canceling the period voice navigation in the multi-period scanning.
In one exemplary implementation, determining whether a period voice navigation cancellation condition is satisfied based on a scan delay time and a period voice navigation time of each scan sequence includes:
determining the minimum scanning delay time of the last scanning sequence in the multi-period scanning according to the scanning delay time of the first scanning sequence in the multi-period scanning and the period voice navigation time;
if the scanning delay time of the last scanning sequence in the multi-period scanning is less than the minimum scanning delay time, determining that a period voice navigation cancellation condition is met; and if the scanning delay time of the last scanning sequence in the multi-period scanning is greater than or equal to the minimum scanning delay time, determining that the voice navigation cancellation condition is not met.
In one exemplary implementation, canceling periodic voice navigation in a multi-period scan includes:
and canceling sending a first period navigation playing instruction to the CT equipment, wherein the first period navigation playing instruction is used for indicating the CT equipment to play voice navigation in the preset time.
In one exemplary implementation, canceling periodic voice navigation in a multi-period scan includes:
and canceling sending a second period navigation playing instruction to the voice navigation playing module, wherein the second period navigation playing instruction is used for indicating the voice navigation playing module to play voice navigation during the preset time.
In one exemplary implementation, obtaining a maximum breath hold time for a subject to be scanned for a plurality of phases includes:
the default breath holding time is read from the system as the longest breath holding time of the subject to be scanned for the multiple phases.
In one exemplary implementation, obtaining a maximum breath hold time for a subject to be scanned for a plurality of phases includes:
and receiving the breath holding time input by the user as the longest breath holding time of the examinee to be subjected to the multi-phase scanning.
In one exemplary implementation, obtaining a maximum breath hold time for a subject to be scanned for a plurality of phases includes:
one breath holding time is selected from a plurality of breath holding times set in the system as the longest breath holding time of the subject to be subjected to the multi-phase scanning.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the program, when executed by a processor, implements the following operations:
before CT scanning, obtaining the longest breath holding time of a subject to be subjected to multi-period scanning and a scanning protocol of the multi-period scanning;
according to the scanning protocol, determining the scanning time, the scanning delay time, the period voice navigation time and the inter-sequence hardware switching preparation time of each scanning sequence in the multi-period scanning;
judging whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time between the sequences is less than or equal to the longest breath holding time;
and if so, determining whether a period voice navigation cancellation condition is met or not based on the scanning delay time and the period voice navigation time of each scanning sequence, and if so, canceling the period voice navigation in the multi-period scanning.
In one exemplary implementation, determining whether a period voice navigation cancellation condition is satisfied based on a scan delay time and a period voice navigation time of each scan sequence includes:
determining the minimum scanning delay time of the last scanning sequence in the multi-period scanning according to the scanning delay time of the first scanning sequence in the multi-period scanning and the period voice navigation time;
if the scanning delay time of the last scanning sequence in the multi-period scanning is less than the minimum scanning delay time, determining that a period voice navigation cancellation condition is met; and if the scanning delay time of the last scanning sequence in the multi-period scanning is greater than or equal to the minimum scanning delay time, determining that the voice navigation cancellation condition is not met.
In one exemplary implementation, canceling periodic voice navigation in a multi-period scan includes:
and canceling sending a first period navigation playing instruction to the CT equipment, wherein the first period navigation playing instruction is used for indicating the CT equipment to play voice navigation in the preset time.
In one exemplary implementation, canceling periodic voice navigation in a multi-period scan includes:
and canceling sending a second period navigation playing instruction to the voice navigation playing module, wherein the second period navigation playing instruction is used for indicating the voice navigation playing module to play voice navigation during the preset time.
In one exemplary implementation, obtaining a maximum breath hold time for a subject to be scanned for a plurality of phases includes:
the default breath holding time is read from the system as the longest breath holding time of the subject to be scanned for the multiple phases.
In one exemplary implementation, obtaining a maximum breath hold time for a subject to be scanned for a plurality of phases includes:
and receiving the breath holding time input by the user as the longest breath holding time of the examinee to be subjected to the multi-phase scanning.
In one exemplary implementation, obtaining a maximum breath hold time for a subject to be scanned for a plurality of phases includes:
one breath holding time is selected from a plurality of breath holding times set in the system as the longest breath holding time of the subject to be subjected to the multi-phase scanning.
For the device and apparatus embodiments, as they correspond substantially to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, wherein the modules described as separate parts may or may not be physically separate, and the parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution in the specification. One of ordinary skill in the art can understand and implement it without inventive effort.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Other embodiments of the present description will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the specification following, in general, the principles of the specification and including such departures from the present disclosure as come within known or customary practice within the art to which the specification pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.
It will be understood that the present description is not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.
The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A multi-phase scanning control method is characterized by comprising the following steps:
before CT scanning, obtaining the longest breath holding time of a subject to be subjected to multi-period scanning and a scanning protocol of the multi-period scanning;
according to the scanning protocol, determining the scanning time, the scanning delay time, the period voice navigation time and the inter-sequence hardware switching preparation time of each scanning sequence in the multi-period scanning;
judging whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time between the sequences is less than or equal to the longest breath holding time;
and if so, determining whether a period voice navigation cancellation condition is met or not based on the scanning delay time and the period voice navigation time of each scanning sequence, and if so, canceling the period voice navigation in the multi-period scanning.
2. The method of claim 1, wherein determining whether the period voice navigation cancellation condition is satisfied based on the scan delay time and the period voice navigation time of each scan sequence comprises:
determining the minimum scanning delay time of the last scanning sequence in the multi-period scanning according to the scanning delay time of the first scanning sequence in the multi-period scanning and the period voice navigation time;
if the scanning delay time of the last scanning sequence in the multi-period scanning is less than the minimum scanning delay time, determining that a period voice navigation cancellation condition is met; and if the scanning delay time of the last scanning sequence in the multi-period scanning is greater than or equal to the minimum scanning delay time, determining that the voice navigation cancellation condition is not met.
3. The method of claim 1, wherein canceling periodic voice navigation in a multi-period scan comprises:
and canceling sending a first period navigation playing instruction to the CT equipment, wherein the first period navigation playing instruction is used for indicating the CT equipment to play voice navigation in the preset time.
4. The method of claim 1, wherein canceling periodic voice navigation in a multi-period scan comprises:
and canceling sending a second period navigation playing instruction to the voice navigation playing module, wherein the second period navigation playing instruction is used for indicating the voice navigation playing module to play voice navigation during the preset time.
5. The method of claim 1, wherein obtaining a maximum breath hold time for a subject to be scanned for a plurality of phases comprises:
the default breath holding time is read from the system as the longest breath holding time of the subject to be scanned for the multiple phases.
6. The method of claim 1, wherein obtaining a maximum breath hold time for a subject to be scanned for a plurality of phases comprises:
and receiving the breath holding time input by the user as the longest breath holding time of the examinee to be subjected to the multi-phase scanning.
7. The method of claim 1, wherein obtaining a maximum breath hold time for a subject to be scanned for a plurality of phases comprises:
one breath holding time is selected from a plurality of breath holding times set in the system as the longest breath holding time of the subject to be subjected to the multi-phase scanning.
8. A multi-phase scan control apparatus, comprising:
the acquisition module is used for acquiring the longest breath holding time of a subject to be subjected to multi-period scanning and a scanning protocol of the multi-period scanning before CT scanning;
the determining module is used for determining the scanning time, the scanning delay time, the period voice navigation time and the inter-sequence hardware switching preparation time of each scanning sequence in the multi-period scanning according to the scanning protocol;
the judging module is used for judging whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time among the sequences is less than or equal to the longest breath holding time;
and the cancellation module is used for determining whether a period voice navigation cancellation condition is met or not based on the scanning delay time and the period voice navigation time of each scanning sequence if the period voice navigation cancellation condition is met, and canceling the period voice navigation in the multi-period scanning if the period voice navigation cancellation condition is met.
9. A console device, comprising: the system comprises an internal bus, a memory, a processor and an external interface which are connected through the internal bus; the external interface is used for connecting CT equipment of a CT system;
the memory is used for storing machine readable instructions corresponding to the multi-period scanning control logic;
the processor is configured to read the machine-readable instructions on the memory and perform the following operations:
before CT scanning, obtaining the longest breath holding time of a subject to be subjected to multi-period scanning and a scanning protocol of the multi-period scanning;
according to the scanning protocol, determining the scanning time, the scanning delay time, the period voice navigation time and the inter-sequence hardware switching preparation time of each scanning sequence in the multi-period scanning;
judging whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time between the sequences is less than or equal to the longest breath holding time;
and if so, determining whether a period voice navigation cancellation condition is met or not based on the scanning delay time and the period voice navigation time of each scanning sequence, and if so, canceling the period voice navigation in the multi-period scanning.
10. A CT system comprising a scanning bed, a CT apparatus, and a console apparatus, wherein:
the CT equipment is used for controlling a multi-period scanning process according to the instruction sent by the console equipment;
the console device is configured to:
before CT scanning, obtaining the longest breath holding time of a subject to be subjected to multi-period scanning and a scanning protocol of the multi-period scanning;
according to the scanning protocol, determining the scanning time, the scanning delay time, the period voice navigation time and the inter-sequence hardware switching preparation time of each scanning sequence in the multi-period scanning;
judging whether the sum of the scanning time of each scanning sequence and the hardware switching preparation time between the sequences is less than or equal to the longest breath holding time;
and if so, determining whether a period voice navigation cancellation condition is met or not based on the scanning delay time and the period voice navigation time of each scanning sequence, and if so, canceling the period voice navigation in the multi-period scanning.
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