Evidence map›Paper›PMID 25630381›Full record

ArticleThe Analyst2015

Wavelength-dependent penetration depth of near infrared radiation into cartilage.

M V Padalkar, N Pleshko

Abstract read
In one paragraph

Article in The Analyst, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

60 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Design rules for externally triggered drug uncaging under optical and radiolytic regimes.European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V · 2026
    Review
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  9. Influence of photobiomodulation therapy on regenerative potential of non-vital mature permanent teeth in healthy canine dogs.European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry · 2025
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

M V PadalkarDepartment of Bioengineering, Temple University, Philadelphia, PA, USA. npleshko@temple.edu.
N Pleshko

Funding

Evaluation of Cartilage Tissue Engineering Strategies by IR ImagingR01AR056145 · NIAMS · TEMPLE UNIV OF THE COMMONWEALTH · PI PLESHKO, NANCY · 2009 to 2020
$3.3M
Infrared Fiber Optic Imaging of Degenerative CartilageR01EB000744 · NIBIB · TEMPLE UNIV OF THE COMMONWEALTH · PI PLESHKO, NANCY · 2002 to 2010
$2.2M
NIAMS NIH HHS AR056145NIAMS NIH HHS R01 AR056145NIBIB NIH HHS EB000744NIBIB NIH HHS R01 EB000744
6 · The paper itself

Abstract

Articular cartilage is a hyaline cartilage that lines the subchondral bone in the diarthrodial joints. Near infrared (NIR) spectroscopy is emerging as a nondestructive modality for the evaluation of cartilage pathology; however, studies regarding the depth of penetration of NIR radiation into cartilage are lacking. The average thickness of human cartilage is about 1-3 mm, and it becomes even thinner as OA progresses. To ensure that spectral data collected is restricted to the tissue of interest, i.e. cartilage in this case, and not from the underlying subchondral bone, it is necessary to determine the depth of penetration of NIR radiation in different wavelength (frequency) regions. In the current study, we establish how the depth of penetration varies throughout the NIR frequency range (4000-10 000 cm(-1)). NIR spectra were collected from cartilage samples of different thicknesses (0.5 mm to 5 mm) with and without polystyrene placed underneath. A separate NIR spectrum of polystyrene was collected as a reference. It was found that the depth of penetration varied from ∼1 mm to 2 mm in the 4000-5100 cm(-1) range, ∼3 mm in the 5100-7000 cm(-1) range, and ∼5 mm in the 7000-9000 cm(-1) frequency range. These findings suggest that the best NIR region to evaluate cartilage with no subchondral bone contribution is in the range of 4000-7000 cm(-1).

Indexed as

Spectroscopy, Near-InfraredAnimalsCartilage, ArticularCattleOptical ImagingPolystyrenesPolystyrenes

Identifiers

PMID25630381
PMCPMC4418489

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.