Re: Our CT Insurance Measurement Report vs. STARscanner report

[Guest guest]

We received our CT Insurance Measurement Reports. They look different

from our StarScan reports. The terminologies are somewhat different

and the figures are different, too. I am wondering about the accuracy

of these measurements.

CT's measurements:

ISAAC:

Cranial width: 135 mm

Cranial Length: 147 mm

Cephalic Index: 91.9

Circumference: 46 mm

Cranial Vault Asymmetry: 9 mm (fzR-OcpL: 131; fzL-OcpR 140)

Mid-face Asymmetry: 2 mm

Skull-base Asymmetry: 3 mm

GARRICK:

Cranial width: 132 mm

Cranial Length: 147 mm

Cephalic Index: 89.8

Circumference: 45.8 mm

Cranial Vault Asymmetry: 12 mm (fzR-OcpL: 146; fzL-OcpR 134)

Mid-face Asymmetry: 3 mm

Skull-base Asymmetry: 3 mm

********************************************

According to their StarScan report:

ISAAC:

Cephalic Ratio measurement: 0.899

Oblique Diagonal 1: 154.7

Oblique Diagonal 2: 150.1

Cranial Vault Asymmetry Index (CVAI): 3.0

GARRICK:

Cephalic Ratio measurement: 0.886

Oblique Diagonal 1: 150.2

Oblique Diagonal 2: 153.9

Cranial Vault Asymmetry Index (CVAI): 2.4

*********************************************

It looks like their plagio is a lot worse with CT's reports. Is it

common to have this kind of deviation in terms of measurement?

Mother of 11 months old twin boys, NJ

> >

> > >

> > > Based on your sons' measurements they both have brachy rather than

> > > plagio. Brachy is measured by the Cephalic Ratio which is Cranial

> > > Breadth/Cranial Length. Generally the severity is measured by the

> > > following:

> > > ideal ratio - 78%

> > > normal - 73-83%

> > > moderate - 83.1% to 87.9%

> > > severe - 88% and higher

> > >

> > > At 4.6 mm for Isaac and 3.7 mm for Garrick the plagio is on the

mild

> > > side:

> > > 0-3 mm is normal

> > > <6 mm is very mild

> > > 6-10 mm is mild

> > > 10-15 mm is moderate

> > > 15+ mm is severe

> > >

> > > Molly

> > > Novato, California

> > > Nicolas, 2.5, tort & plagio, STARband (CIRS Oakland)

4/24/06-9/12/06,

> > > Graduate!

> > > , 5

> > > , 8.5

[Guest guest]

Hi -

It's not uncommon to get different measurements from different

orthos. I can't speak for the StarScanner specifically (hopefully

Molly will chime in with her experiences) but I believe the sensors

of the StarScanner are placed in different locations on the head

than the calipers at CT. Some measurements are done using the

anthropometric locations on the skull, specific landmark areas that

were designed for anthropologists to use. And some measurements are

done by placing the calipers on the worst part of the plagio (the

outer most point of the forehead bulge and the outer most point of

the back non-flat side of the head, and vice versa for the flattest

areas). It just depends on where they take the measurements from

(Here is a link about anthropometric measurements:

http://www.plagiocephaly.info/faqs/anthropometry.htm

You can see that CT uses the specified anthropometric landmarks Fz

and Op (they list it as Ocp on their report). I'm not sure where

StarScanner measured them from though.

One thing I do see is that CT's cephalic ratio is pretty close to

StarScanner's cephalic index, so in that sense they are in sync,

given that there is going to be some + or - room for error.

Also, I believe there is some difference between CT's cranial vault

and StarScanner's cranial vault index, but I'm not sure what it is.

Again, hopefully Molly can shed some light there.

Not sure if that helps, but there you go.

Jake-21m (tort resolved/rt plagio/DOCBand #2 3 weeks)

Jordan-4

> > > >

> > > > Based on your sons' measurements they both have brachy

rather than

> > > > plagio. Brachy is measured by the Cephalic Ratio which is

Cranial

> > > > Breadth/Cranial Length. Generally the severity is measured

by the

> > > > following:

> > > > ideal ratio - 78%

> > > > normal - 73-83%

> > > > moderate - 83.1% to 87.9%

> > > > severe - 88% and higher

> > > >

> > > > At 4.6 mm for Isaac and 3.7 mm for Garrick the plagio is on

the

> mild

> > > > side:

> > > > 0-3 mm is normal

> > > > <6 mm is very mild

> > > > 6-10 mm is mild

> > > > 10-15 mm is moderate

> > > > 15+ mm is severe

> > > >

> > > > Molly

> > > > Novato, California

> > > > Nicolas, 2.5, tort & plagio, STARband (CIRS Oakland)

> 4/24/06-9/12/06,

> > > > Graduate!

> > > > , 5

> > > > , 8.5

>