Validation of an Optical Pencil Method to Estimate the Affected Body Surface Area in Psoriasis

Reolid, A.; Servitje, O.; Ginarte, Manuel; Pérez‐Ferriols, A.; Vélez, Antonio; Aragües, M.; Pereiro, Marta Pérez; Sánchez‐Carazo, J.L.; Garrido, Jesús; Daudén, Esteban

doi:10.1016/j.adengl.2020.01.001

Cited by 3 publications

(10 citation statements)

References 22 publications

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“…Reolid et al . reported similar results in 56 patients with psoriasis using CAIA visual assessment (optical pencil) 3 . The optical pencil method comprises a system in which the affected surface is shaded with a stylus, using a graphical representation of the body on a touchscreen; the application then calculates the percentage area affected.…”

Section: Discussionmentioning

confidence: 77%

“…To assess the overestimation of BSA and overcome this limitation of physician‐estimated BSA values, studies have reported that the extent of skin diseases can be quantitatively evaluated using CAIA 3,11–17 . However, no reports suggesting the cause and clinical significance of overestimating BSA results exist.…”

Section: Discussionmentioning

confidence: 99%

“…Assessing the area involved by a disease, i.e. the body surface area (BSA), is essential in the initial evaluation of the disease activity and during the follow‐up of the disease course in dermatological patient care 3–5 . In addition, accurate assessment of BSA is a cornerstone for patient education, especially regarding the appropriate amount of topical agent application.…”

Section: Introductionmentioning

confidence: 99%

“…To assess the overestimation of BSA and overcome this limitation of physician‐estimated BSA values, an objective technique to measure BSA, which represents the true value of involvement and has a low susceptibility to bias, is needed. A number of studies have reported that the extent of skin diseases can be evaluated quantitatively using computer‐assisted image analysis (CAIA) 3,11–17 . However, no reports suggesting the cause and clinical significance of overestimating BSA exist.…”

Section: Introductionmentioning

confidence: 99%

“…the body surface area (BSA), is essential in the initial evaluation of the disease activity and during the follow-up of the disease course in dermatological patient care. [3][4][5] In addition, accurate assessment of BSA is a cornerstone for patient education, especially regarding the appropriate amount of topical agent application. More recently, for biologic therapies, measuring the objective area of the skin is an important indicator in evaluation before and after the treatment.…”

Section: Introductionmentioning

confidence: 99%

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Estimation error of the body surface area in psoriasis: a comparative study of physician and computer‐assisted image analysis (ImageJ)

Yoo

Jeong

Park³

et al. 2022

Clin Experimental Derm

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Background. Assessing the area involved in a skin disease, i.e. the body surface area (BSA), is essential in diagnosing disease severity, including in psoriasis. However, in psoriasis, BSA tends to be overestimated by physicians and has shown high inter-rater and intrarater variability. Furthermore, there are no reports suggesting the cause and clinical significance of overestimating BSA in psoriasiss. Aim. To investigate the errors in estimating BSA in psoriasis by comparing physicians' results with those of computer-assisted image analysis (CAIA) and to provide suggestions regarding the clinical implications of such errors. Methods. Using 43 images, 36 physicians visually estimated BSA in psoriasis, and subsequently, the images were evaluated using a CAIA program (ImageJ); the BSA values determined by the physicians and CAIA were then compared and matched. The BSA percentage was also graded on a scale from 0 to 6, as follows: Grade 0 = no lesion, Grade 1 = 1%-9%, Grade 2 = 10%-29%, Grade 3 = 30%-49%, Grade 4 = 50%-69%, Grade 5 = 70%-89% and Grade 6 = 90%-100%. Each grade range was divided, with the bottom and top 50% defined as the 'first half' and 'second half,' respectively. Results. The mean proportion of correct assessments by physicians was 49.4%. Physicians tended to overestimate the BSA of psoriatic lesions by 8.76% AE 8.82% compared with CAIA. The largest estimation error (proportion incorrect 75.7%) was observed in Grade 3 (30%-49% involvement). Estimates in the second half of the range demonstrated a higher proportion of inaccuracies compared with those in the first half. An overestimating error occurred in certain morphological characteristics of the psoriatic lesions. Conclusions. The inaccuracy of BSA estimation by physicians may be related to the fact that information from the human eye is perceived to be exaggerated compared with the actual size. Further research into using artificial intelligence technology is needed to reduce quantification error and develop an ideal BSA assessment system. Additionally, education and training are needed for physicians to measure BSA accurately.

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Section: Discussionmentioning

confidence: 77%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Estimation error of the body surface area in psoriasis: a comparative study of physician and computer‐assisted image analysis (ImageJ)

Yoo

Jeong

Park³

et al. 2022

Clin Experimental Derm

View full text Add to dashboard Cite

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Novel effect of topical Roquinimex and its combination with Clobetasol on an imiquimod-induced model of psoriasis in mice

Hasan,

Gatea

2024

Naunyn-Schmiedeberg's Arch Pharmacol

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Roflumilast (Zoryve)

CADTH

2023

cjht

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CADTH reimbursement reviews are comprehensive assessments of the clinical effectiveness and cost-effectiveness, as well as patient and clinician perspectives, of a drug or drug class. The assessments inform non-binding recommendations that help guide the reimbursement decisions of Canada's federal, provincial, and territorial governments, with the exception of Quebec. This review assesses roflumilast cream 0.3% w/w (Zoryve) for topical use. Indication: For topical treatment of plaque psoriasis, including treatment of psoriasis in the intertriginous areas, in patients 12 years of age and older.

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Validation of an Optical Pencil Method to Estimate the Affected Body Surface Area in Psoriasis

Cited by 3 publications

References 22 publications

Estimation error of the body surface area in psoriasis: a comparative study of physician and computer‐assisted image analysis (ImageJ)

Estimation error of the body surface area in psoriasis: a comparative study of physician and computer‐assisted image analysis (ImageJ)

Novel effect of topical Roquinimex and its combination with Clobetasol on an imiquimod-induced model of psoriasis in mice

Roflumilast (Zoryve)

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