𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Reliability of computer image analysis of pigmented skin lesions of Australian adolescents

✍ Scribed by Joanne F. Aitken; John Pfitzner; Diana Battistutta; Peter K. O'Rourke; Adèle C. Green; Nicholas G. Martin

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
499 KB
Volume
78
Category
Article
ISSN
0008-543X

No coin nor oath required. For personal study only.

✦ Synopsis

BACKGROUND.

The diagnosis of melanomas at an early stage is associated with improved :;urvival, so the recognition of changes in pigmented skin lesions over time is important. We have developed a computer imaging system with the aim of assisting clinicians in differentiating early melanomas from benign pigmented skin lesions. The objective of this study was to investigate the system's reliability over time in measuring diagnostic characteristics of pigmented skin lesions, including their color, size, shape, and distinctness of boundary.

METHODS.

We captured video images of 5 lesions, all larger than 2 mm in greatest dimension, on each of 66 Australian adolescents on 2 occasions approximately 1 month apart. Features extracted by computer image analysis included area, perimeter, and regularity of outline of the lesions, the mean and standard deviation of reflectance at red, green, and blue wavelengths, and the mean and standard deviation of the gradients of red, green, and blue reflectance at the lesion boundary.

RESULTS.

Ad1 measurements showed moderate to high reliability (intraclass correlation coefficients 0.66-0.941, except for the standard deviations of the color gradients, whose reliability improved to moderate levels (0.68-0.71) when the mean of 5 lesions was considered. For most outcomes, reasonable within subject reliability was achieved when five lesions per subject were measured.

📜 SIMILAR VOLUMES

Computer-assisted analysis of epilumines
Computer-assisted analysis of epiluminescence microscopy images of pigmented skin lesions
✍ Olivier Debeir; Christine Decaestecker; Jean-Lambert Pasteels; Isabelle Salmon; 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 604 KB

Background: Epiluminescence microscopy (ELM) is a noninvasive clinical tool recently developed for the diagnosis of pigmented skin lesions (PSLs), with the aim of improving melanoma screening strategies. However, the complexity of the ELM grading protocol means that considerable expertise is require

Automatic registration of images of pigm
Automatic registration of images of pigmented skin lesions
✍ Bruce Mcgregor 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 397 KB

Melanoma rates in whites are increasing rapidly. Early detection, primarily through altered appearance of pigmented skin lesions, is the strongest determinant of survival. For high-risk patients photographic records are invaluable, but images must first be ''registered'' to remove distortions introd

Spectrophotometric imaging of cutaneous
Spectrophotometric imaging of cutaneous pigmented lesions: discriminant analysis, optical properties and histological characteristics
✍ Stefano Tomatis; Cesare Bartoli; Aldo Bono; Natale Cascinelli; Claudio Clemente; 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 792 KB

Reflectance imaging spectroscopy at 17 selected wavelengths in the range 420-1040 nm has been applied as a method to discriminate melanoma from other pigmented cutaneous lesions. Reflectance images are acquired for 1 X primary melanomas and 33 benign naevi in 44 patients. From each spectral image,

The ‘common mole’ from the point of view
The ‘common mole’ from the point of view of digital dermoscopy analysis: subjective vs. objective evaluation of easy pigmented skin lesions
✍ M Burroni; P Rubegni; G Dell’eva; S Santini; R Perotti; M Biagioli; P Taddeucci; 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 327 KB

## ABSTRACT **Background** The term ‘common mole’, often used to describe a subset of benign pigmented skin lesions, is traditionally defined on the basis of morpho‐chromatic features. In recent years, certain research groups have developed equipment and methods, such as digital dermoscopy analysis

Dermoscopic diagnosis by a trained clini
Dermoscopic diagnosis by a trained clinician vs. a clinician with minimal dermoscopy training vs. computer-aided diagnosis of 341 pigmented skin lesions: a comparative study
✍ D. Piccolo; A. Ferrari; K. Peris; R. Daidone; B. Ruggeri; S. Chimenti 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 67 KB

## Background: In the last few years digital dermoscopy has been introduced as an additional tool to improve the clinical diagnosis of pigmented skin lesions. ## Objective: To evaluate the validity of digital dermoscopy by comparing the diagnoses of a dermatologist experienced in dermoscopy (5 ye

Endpoint markers for cancer chemoprevent
Endpoint markers for cancer chemoprevention trials derived from the lesion of precancer (intraepithelial neoplasia) measured by computer-assisted quantitative image analysis
✍ Charles W. Boone; Gary J. Kelloff 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 312 KB 👁 2 views

Endpoint markers for cancer chemoprevention clinical trials are described that are developed from the morphological properties of the precancerous lesion of intraepithelial neoplasia itself, as measured by computer-assisted quantitative image analysis. The markers include increased proliferative fra