Development of Respiration Sensors Using Plastic Optical Fiber for Respiratory Monitoring Inside MRI System

Yoo, Wook Jae; Jang, Kyoung Won; Seo, Jeong Ki; Heo, Ji Yeon; Moon, Jin Soo; Park, Jang‐Yeon; Lee, Bongsoo

doi:10.3807/josk.2010.14.3.235

Cited by 61 publications

(41 citation statements)

References 20 publications

(21 reference statements)

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“…5(a) and 5(b) show the measurement setup for frequency and transient responses, respectively. Similar to the practical case, the light from the commercial LED module is connected to the device under test (DUT) through bare step-index (SI) PMMA POF and micro-lens [7]. Alignment between the TO-can package and the POF is manually conducted by an electronic XYZ stage.…”

Section: Chip Implementation and Measurement Resultsmentioning

confidence: 99%

A 150-Mb/s CMOS Monolithic Optical Receiver for Plastic Optical Fiber Link

Park¹,

Oh²,

Ham³

et al. 2012

Journal of the Optical Society of Korea

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This paper describes a 150-Mb/s monolithic optical receiver for plastic optical fiber link using a standard CMOS technology. The receiver integrates a photodiode using an N-well/P-substrate junction, a pre amplifier, a post amplifier, and an output driver. The size, PN-junction type, and the number of metal fingers of the photodiode are optimized to meet the link requirements. The N-well/P-substrate photodiode has a 200-μm by 200-μm optical window, 0.1-A/W responsivity, 7.6-pF junction capacitance and 113-MHz bandwidth. The monolithic receiver can successfully convert 150-Mb/s optical signal into digital data through up to 30-m plastic optical fiber link with -10.4 dBm of optical sensitivity. The receiver occupies 0.56-mm 2 area including electrostatic discharge protection diodes and bonding pads. To reduce unnecessary power consumption when the light is not over threshold or not modulating, a simple light detector and a signal detector are introduced. In active mode, the receiver core consumes 5.8-mA DC currents at 150-Mb/s data rate from a single 3.3 V supply, while consumes only 120 μW in the sleep mode.

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Section: Chip Implementation and Measurement Resultsmentioning

confidence: 99%

A 150-Mb/s CMOS Monolithic Optical Receiver for Plastic Optical Fiber Link

Park¹,

Oh²,

Ham³

et al. 2012

Journal of the Optical Society of Korea

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show abstract

“…Respiratory rate is the frequency of breaths and it provides important indications related to the health or physiological state of a patient. Techniques used to detect respiration activity include humidity [1,2], temperature [3], and movement of the human torso [4] during breathing. Generally, respiration monitoring sensors can be classified into contact (wearable) and non-contact types.…”

Section: Introductionmentioning

confidence: 99%

Compact and Low-Cost Optical Fiber Respiratory Monitoring Sensor Based on Intensity Interrogation

Kam

Mohammed

Leen

et al. 2017

J. Lightwave Technol.

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“…109 Figure 12(a) shows the structure of the abdomen-attached respiration sensor. The polymethyl-methacrylate (PMMA) tube fastens the aluminum mirror and one end of the spring, while the other end of the PMMA tube is attached to the POF tip.…”

Section: Plastic Optical Fiber-based Sensorsmentioning

confidence: 99%

“…Other solutions utilizing POF allow RR monitoring based on the temperature difference between inhaled and exhaled air 109,110 or the force with which the air is exhaled immediately in front of the nose or mouth. 111 In the first case, shown in Fig.…”

Section: Plastic Optical Fiber-based Sensorsmentioning

confidence: 99%

Fiber-optic sensors for monitoring patient physiological parameters: a review of applicable technologies and relevance to use during magnetic resonance imaging procedures

Dziuda

2015

J. Biomed. Opt.

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Abstract. The issues involved with recording vital functions in the magnetic resonance imaging (MRI) environment using fiber-optic sensors are considered in this paper. Basic physiological parameters, such as respiration and heart rate, are fundamental for predicting the risk of anxiety, panic, and claustrophobic episodes in patients undergoing MRI examinations. Electronic transducers are generally hazardous to the patient and are prone to erroneous operation in heavily electromagnetically penetrated MRI environments; however, nonmetallic fiberoptic sensors are inherently immune to electromagnetic effects and will be crucial for acquiring the abovementioned physiological parameters. Forty-seven MRI-tested or potentially MRI-compatible sensors have appeared in the literature over the last 20 years. The author classifies these sensors into several categories and subcategories, depending on the sensing element placement, method of application, and measurand type. The author includes five in-house-designed fiber Bragg grating based sensors and shares experience in acquiring physiological measurements during MRI scans. This paper aims to systematize the knowledge of fiber-optic techniques for recording life functions and to indicate the current directions of development in this area.

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Development of Respiration Sensors Using Plastic Optical Fiber for Respiratory Monitoring Inside MRI System

Cited by 61 publications

References 20 publications

A 150-Mb/s CMOS Monolithic Optical Receiver for Plastic Optical Fiber Link

A 150-Mb/s CMOS Monolithic Optical Receiver for Plastic Optical Fiber Link

Compact and Low-Cost Optical Fiber Respiratory Monitoring Sensor Based on Intensity Interrogation

Fiber-optic sensors for monitoring patient physiological parameters: a review of applicable technologies and relevance to use during magnetic resonance imaging procedures

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