[Oradlist] Cervical Burnout and Mach Band effect in IOdigital Radiographs

[Allan G Farman]

Anything that can affect contrast can affect the illusion of the Mach effect... so I humbly differ from this reply. Allan

Allan G. Farman, BDS, PhD, MBA, DSc, Diplomate ABOMR

Prof. Radiology & Imaging Science
Univ. Louisville School of Dentistry: SUHD
501 South Preston Street,
Louisville, Kentucky 40292, USA 

Tel: +1(502) 852.1241
Fax: +1(502)852.1626


>>> "Ruprecht, Axel" <axel-ruprecht at uiowa.edu> 2/26/2009 10:33 AM >>>
Mach band has nothing to do with the imaging system, It is a lateral inhibition effect in your eye/brain. I believe that Ernie Lam had found an interesting paper on this a few years ago.  Ernie?

Rgds
[cid:image001.jpg at 01C997F5.5972B080] 



From: oradlist-bounces at lists.ucla.edu [mailto:oradlist-bounces at lists.ucla.edu] On Behalf Of Kaustubh Sansare
Sent: Wednesday, February 25, 2009 11:31 PM
To: oradlist at lists.ucla.edu 
Subject: [Oradlist] Cervical Burnout and Mach Band effect in IO digital Radiographs


Hi Everybody,

We are in the process of embarking on a project on Cervical Burnout and Mach Band effect in IntraOral digital Radiographs. Before we start we thought of floating the idea on this forum. Does anybody have any experience on this topic? Should Cervical Burnout and Mach Band efeect be seen on IntraOral digital Radiographs, any explanations for your views?

Cervical burnout being a anatomic phenomenon and Mach band effect a optical illusion should remain unchanged be it analog or digital radiograph- is our take.

Thanks
Dr. Kaustubh Sansare,
Associate Professor,
Oral and Maxillofacial Radiology,
Nair Hospital Dental College,
Mumbai,
India.