Companies have different requirements for this kind of testing, and it is not appropriate to publicize the testing and calibration method documents.
1. ultrasonic image (usimage) failure phenomenon
(1) US-1: ① ultrasonic image display incomplete; ② in a special way, the ultrasonic image display incomplete; ③ ultrasonic image is only
only in the line array (convex) scanning mode display incomplete; ④ ultrasonic image display incomplete only refers to the mechanical fan scanning mode; ⑤ ultrasonic image
display incomplete only refers to the electronic fan scanning mode. Incomplete display of ultrasound images refers only to the electronic fan scanning mode (this instrument does not have electronic fan scanning); ⑥ In the display of multiple ultrasound images, only special ultrasound images
are not displayed.
(2) US-2: The display of the ultrasound image area turns white.
(3) US-3: (i) Interfering dots or lines are displayed in the ultrasound image area; (ii) Regular rows or vertical stripes are displayed in the ultrasound
image area.
(4) US-4: (i) The ultrasound echo signal displayed in the line array (convex array) mode is poor; (ii) The ultrasound echo signal displayed in the mechanical fan-scan mode is poor; and (iii) The non-echo signal displayed in the electronic fan-scan mode is poor.
(5) US-5: ① line array (convex array) mode, ultrasound image noise interference; ② in the mechanical fan-scanning mode, ultrasound
acoustic image noise interference; ③ in the electronic fan-scanning mode, ultrasound image noise interference; ④ in a variety of scanning modes of ultrasound
acoustic image noise interference.
(6) US-6: (i) In the line array scanning mode, the sensitivity of the ultrasound image is low; (ii) In the mechanical fan scanning mode, the sensitivity of the ultrasound
image is low; (iii) In the electronic fan scanning mode, the sensitivity of the ultrasound image is low; (iv) In all ultrasound scanning modes, the sensitivity of the ultrasound
image is low.
(7) US-7: Brightness varies in ultrasound images of the same depth.
(8) US-8: (i) ultrasound image changes such as enhancement, no levels, image becomes blurred or other similar images; (ii) ripple interference on the ultrasound image in
mechanical (electronic) fan scanning, convex array scanning.
(9) US-9: The shape of the ultrasound image is displayed abnormally.
(10) US-10: (1) In the line array (convex array) scanning mode, a useless multiplicity of ultrasound images is displayed; (2) In the mechanical
fan scanning mode, a useless multiplicity of ultrasound images is displayed; (3) In the electronic fan scanning mode, a useless multiplicity of ultrasound images
is displayed.
2. Character, graphic (CHARACTER, GRAPHIC) part of the malfunction phenomenon
(1) CG-1: All characters are displayed on the monitor.
(2) CG-2: (1) just calipers, charts are not displayed; (2) just calipers, charts are not displayed properly.
(3) CG-3: ① Monitor is completely white; ② Interfering dots or stripes are partially or completely displayed.
(4) CG-4: Timing and date display are not normal.
(5) CG-5: ① Keystroke characters are not displayed; ② Character display is not normal.
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(6) CG-6: Measurement value is not normal.
3. TIMING SYSTEM, MONITOR (TIMING, MONITOR) FAULT PHENOMENONS
(1) TM-1: ① no image at all on any monitor; ② localization of the monitor does not show the image.
(2) TM-2: ① all images on any monitor are not synchronized; ② ultrasound images on any monitor are not synchronized.
(3) TM-3: ① On any monitor when the brightness changes, the whole image appears to be jittery; ② On the observation monitor,
when the brightness changes, the whole image can be seen to be jittery.
4. Power supply, recorder, panel switch and control system failure phenomenon
(1) PM-1: power supply no output or output is not normal.
(2) PM-2: ① panel switches or control components out of control; ② panel switches or control components are not working properly; ③ camera
shutter failure.
(3) PM-3: ① the image of the camera monitor is not normal (the observation monitor is normal); ② the playback image is not normal, (pass
normal ultrasound image display is normal).
(4) PM-4: ① All images cannot be recorded and the recorder is normal; ② All images cannot be recorded (the recorder is not
normal); ③ Recorded images are not normal (the recorder is normal); ④ Images are not recorded normally (the recorder is in poor condition).
5. Physiological Signal System Failure Phenomena
(1) EU-1: ① Electrocardiogram (ECG) waveforms cannot be displayed; ② Electrocardiogram (ECG) waveforms are displayed abnormally or with
low sensitivity; ③ Electrocardiogram (ECG) waveforms are displayed abnormally or not in individual modes; ④ Electrocardiogram (ECG) synchronization is
not normal.
(2) EU-2: ① pulse waveform is not displayed; ② pulse waveform is displayed abnormally or with low sensitivity.
(3) EU-3: ① heart sound waveform is not displayed; ② heart sound waveform is displayed abnormally or with low sensitivity.
6. Doppler system failure phenomena
(1) DP-1: ① Doppler image is not displayed; ② Doppler image is displayed abnormally in a special way; ③ Doppler
image is not displayed when individual probes are in action; ④ Doppler image is not displayed in continuous wave (CW) or pulse wave (PW).
(2) DP-2: (i) Doppler image is not displayed normally; (ii) Doppler image is not displayed normally in individual modalities; (iii) Doppler
image is not displayed normally when individual probes are in action; and (iv) Doppler image is not
displayed in the continuous wave (CW) or pulse wave (PW).
(3) DP-3: ① Flanking noise on the Doppler image, or the whole image is disturbed by noise; ② Flanking noise on the Doppler
image, which is in individual modalities or the whole image; ③ Flanking noise on the Doppler image, which is in individual probe modalities or the whole image; ④ In continuous wave or pulse wave In the continuous wave or pulse wave modality, there is
fringe noise on the Doppler image.
(4) DP-4: (i) The sensitivity of the Doppler image is low; (ii) In the individual scanning mode, the sensitivity of the Doppler image is low;
(iii) In the individual probe mode, the sensitivity of the Doppler image is low; and (iv) In the continuous or pulse wave mode, the sensitivity of the Doppler image is low
.
(5) DP-5: Low or no Doppler sound output.
(6) DP-6: (i) Doppler is not displayed at PPM; (ii) Doppler is not normal when PPM is displayed.