Mobile and web-based 12-lead ECG management
The present invention provides a mobile and web-based 12-lead ECG management information system for processing clinical 12-lead ECG, comprising: (a) a clinical device for automatically extracting a SCP-ECG or XML-ECG file and processing signals; (b) an ECG database for saving data exported from the clinical device with web-based user interface, and a mobile database which is synchronized with the ECG database; and (c) an interactive electric document for annotating 12-lead ECG with clinical diagnosis codes.
1. A mobile and web-based management information system for processing clinical 12-lead electrocardiogram (ECG), comprising:
(a) a clinical device for automatically extracting an XML-ECG file and processing signals;
(b) an ECG database for saving web-based data exported from the clinical device, and a mobile device client database which is synchronized with the ECG database; and
(c) an interactive electric document for annotating 12-lead ECG with clinical diagnosis codes,
wherein the device for automatically extracting the XML-ECG file and processing signals comprises:
(a1) a device for reading and decoding content of report information (reportinfo tag), data acquisition information (measurements tag), patients' information (patient tag), interpretation information (interpretations tag) and waveforms information (waveforms tag); and
(b1) a means for processing noise,
wherein the means for processing noise filters out interference due to baseline drift or high frequency noise via stationary wavelet transform comprising a formula:
ECG
(
t
)
=
∑
k
a
k
ϕ
(
t
-
k
)
+
∑
k
∑
j
d
j
,
k
Ψ
(
2
j
t
-
k
)
where
ECG(t) means a time sequence of ECG signals;
ψ means a generating function;
φ means a scaling function;
a k means an approximate coefficient of stationary wavelet decomposition at j-level;
d j , k means a detail coefficient of stationary wavelet decomposition at j-level, and expressed as:
d
jk
=
median
(
d
j
,
k
)
0.6725
2
ln
N
*
f
,
where
f
=
j
+
1
if
j
=
1
or
2
f
=
1
j
+
1
if
j
>
2
;
j
means
a
decomposition
order
;
k
means
a
discrete
-
time
transfer
;
and
f
means
a
revised
parameter
of
threshold
.
2. The system of claim 1 , wherein the signals are processed as decoded raw waveforms.
3. The system of claim 1 , wherein the decomposition order ranges from 1 to 10.
4. The system of claim 1 , wherein the decomposition order is 8.