A study of the relationship between the level of anxiety declared by MRI patients in the STAI questionnaire and their respiratory rate acquired by a fibre-optic sensor system

Abstract

Magnetic resonance imaging (MRI) patients often experience anxiety-related respiratory disorders, including hyperventilation, but their respiratory indicators are not routinely monitored during scanning. Free from metal parts and immune to electromagnetic radiation, fibre-optic sensors have the potential to better control the patient’s condition by providing continuous non-invasive monitoring of the respiratory rate (RR). The study was purposed to assess the relationship between anxiety in MRI patients and their RR acquired by a fibre-optic sensor system. Forty-four subjects were involved in the study. The mean RR values recorded for 2 minutes immediately after the beginning and immediately before the end of the scanning were assessed relative to the State-Trait Anxiety Inventory (STAI) X-1 scores obtained immediately before and immediately after the scanning, respectively. A growth mixture model analysis was performed to statistically differentiate two groups of subjects according to the trends in repeated measures of RR. A significant lowering of the anxiety state was observed in the group characterised by a decrease in RR, whereas essentially no change in anxiety level was observed in the group with a stable RR. The t-test showed significant differences in changes in anxiety between these groups (t(39) = −2.349, p = 0.012, Cohen’s d = 2.13).

Modification of the mechanical cardiac performance during end-expiratory voluntary apnea recorded with ballistocardiography and seismocardiography

“…Technological advances in micro-accelerometers and gyroscopes sensors have facilitated the development of high-performing portable devices which are user-friendly, thus enabling their deployment in multiple settings from space laboratories (Migeotte et al 2016) to the clinical setting. Other techniques are also in development such as, for instance, fiber-optic sensors system by measuring changes in the respiratory rate pattern of patients undergoing MRI examination, to evaluate the degree of anxiety (Dziuda et al 2019).…”

Heart Rate Monitoring Sensor Based on Singlemode-Multimode-Singlemode Fiber

“…In the MMF section, the radial field profile of ( ) , r z ψ along the propagation distance z can be expressed as [11] ( ) ( )…”

“…A complete one heartbeat recorded by an electrocardiograph (ECG) can be represented by a P-wave, QRS-complex, and T-wave or shortened by a PQRST-wave. Dziuda et al reported that the relationship between the anxiety in MRI patients and their RR from the two PQRST-waves acquired by a fibre-optic sensor system [11]. The system presented that non-invasive RR monitoring allows the MRI operator to better control the patient's condition.…”

Multifunctional Textile Platform for Fiber Optic Wearable Temperature-Monitoring Application

“…In this case, the functions of fiber optic technology could reach any part of the curved human body via a textile-based wearable modality such as tights [10,11]. Moreover, compared with electronic devices, optical fiber sensors have various advantages: they are durable, immune to electromagnetic interference, exhibit resistance to salt solutions (i.e., sweat), and possess good biocompatibility with the human body [10][11][12][13]. These unique features make optical fiber sensors particularly suitable for special environments, i.e., MRI environments and the skin surface [12].…”

“…Moreover, compared with electronic devices, optical fiber sensors have various advantages: they are durable, immune to electromagnetic interference, exhibit resistance to salt solutions (i.e., sweat), and possess good biocompatibility with the human body [10][11][12][13]. These unique features make optical fiber sensors particularly suitable for special environments, i.e., MRI environments and the skin surface [12]. Among numerous fiber optic sensors, fiber Bragg grating (FBG) sensors are being developed to become a prominent technology and are commercialized in a broad field of applications.…”