Butterfly Network Butterfly iQ, User Manual, Page: 53 / 58

Table 18. Color + Ophthalmic
Index Label MI
TIS TIB
TIC
Scan
Non-Scan
Non-
Scan
A
aprt
≤1
cm
2
A
aprt
>1
cm
2
Maximum Index Value 0.162 0.00145 0.0167 - 0.0477 0.0340
Assoc Acoustic P
ar
ameter
Pr.3 (MPa) 0.355
W
o
(mW) 0.0633 0.719 0.719 0.719
min of [W
.3
(z
1
),
I
TA.3
(z
1
)]
(mW) -
z
1
(cm) -
z
bp
(cm) -
z
sp
(cm) 1.65 1.22
d
eq
(Z
sp
) (cm) 0.0358
f
c
(MHz) 4.80 4.80 4.89 - 4.89 4.89
Dim of A
aprt
X (cm) 0.65 0.5 - - 0.5
Y (cm) 0.65 0.5 - - 0.5
Other Inf
or
mation
PD (μsec) 0.175
PRF (Hz) 1100
p
r
@PII
max
(MPa) 0.507
d
eq
@PII
max
(cm) 0.311
Focal Length
FLx (cm) 4.0 5.0 -
FLy (cm) 4.0 lnf -
I
PA.3
@MI
max
(W/cm2) 6.48
Operating Con-
trol Conditions
Ophthalmic
✓
✓
✓
Note 1: Information need not be provided for any formulation of TIS not yielding the maximum value of TIS for that mode.
Note 2:
Information need not be provided regarding TIC for any TRANSDUCER ASSEMBLY not intended for transcranial or neonatal
cephalic uses.
Note 3:
Information on MI and TI need not be provided if the equipment meets both the exemption clauses given in 51.2aa) and 51.2
dd).
Acoustic Output
Specifications 53