Evidence map›Paper›PMID 41458003›Full record

ArticleIEEE sensors journal2025

Broad-Bandwidth Frequency-Domain Near-Infrared Spectroscopy System on a Chip.

Siavash Yazdi, Saba Mohammadi, Shashikant Lahade, Timothy Quang, Jesse H Lam, Thomas D O'Sullivan, Michael M Green

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in IEEE sensors journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–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

4 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. System Derived Spatial-Temporal CNN for High-Density fNIRS BCI.IEEE open journal of engineering in medicine and biology · 2023
    Article
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

7 authors.

Siavash YazdiDepartment of EECS, University of California, Irvine, CA 92697 USA. He is now with NXP Semiconductors, Irvine, CA 92618.
Saba MohammadiDepartment of EECS, University of California, Irvine, CA 92697 USA.
Shashikant LahadeDepartment of Electrical Engineering, University of Notre Dame, Notre Dame, IN 46556 USA.
Timothy QuangDepartment of Biomedical Engineering, University of California, Irvine, CA 92697 USA. He is now with the National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20814 USA.
Jesse H LamDepartment of Biomedical Engineering, University of California, Irvine, CA 92697 USA. He is now with Dankook University, Korea.
Thomas D O'SullivanDepartment of Electrical Engineering, University of Notre Dame, Notre Dame, IN 46556 USA.
Michael M GreenDepartment of EECS, University of California, Irvine, CA 92697 USA.

Funding

Next generation deep tissue quantitative optical imagingR01EB029595 · NIBIB · UNIVERSITY OF NOTRE DAME · PI OSULLIVAN, THOMAS D · 2021 to 2024
$1.9M
NIBIB NIH HHS R01 EB029595
6 · The paper itself

Abstract

The design and evaluation of an integrated circuit (IC) that provides gain and phase measurements for a broad modulation bandwidth frequency-domain near-infrared spectroscopy (fd-NIRS) system is described. This circuit includes a voltage-controlled oscillator that provides modulating frequencies from 50 MHz up to 1 GHz, as well as analog measurements of amplitude and phase. The phase detector is based on an N-path filter and allows for accurate phase measurement. The IC works with a laser diode and an avalanche photodiode to implement a complete fd-NIRS spectroscopy system. The IC-based system was used to characterize tissue-simulating phantoms with varying absorption and reduced scattering properties with modulation frequencies of 105-405 MHz with the upper frequency limited by the APD used in the system. Mean optical property accuracy was within 0.00064 mm

Indexed as

biomedical optical imagingCMOS processnear-infrared spectroscopyphantomsphase detectionphotodiode

Identifiers

PMID41458003
PMCPMC12742976

What OpenQuestion holds

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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.